Pub Date : 2024-03-17DOI: 10.25105/urbanenvirotech.v7i1.18550
Fadiyah Ghina Salsabila, Anie Yulistyorini, H. Takaijudin, Imam Alfianto
Groundwater is a natural resource used by humans to fulfil their living needs which should meet the Republik Indonesia Minister of Health Regulation No. 2/2023. Aim: This research aims to contribute to solve these challenges and meet the clean water quality standard. Methodology and Results: The groundwater sample was taken from the deep well of Al-Hikmah Mosque, Universitas Negeri Malang (UM). It was indicated to contain Fe and Mn, as evidenced by its yellowish colour when left undisturbed for some time. A laboratory-scale experiment was conducted for the deep well treatment and analysis. The treatment system consists of aeration, sedimentation, and filtration. The filtration unit comprises several natural media such as gravel, silica sand, zeolite, and activated charcoal. This experiment used detention times of 120 and 240 minutes as dependent variables. Conclusion, significance, and impact study: The results showed that detention times of 120 and 240 min have efficiency on turbidity reduction of 92.86% and 98.69%, Total Dissolved Solids (TDS) of 10.42% and 14.47%, Fe of 23.01%, Mn of 62.39% and 94.70%, and for CaCO3 of 2.98% and 11.17%, respectively. The research findings demonstrated that a detention time of 240 min generated water quality that met the Minister of Health No. 2/2023 standards. Detention times of 120 minutes and 240 minutes led to significant differences in water quality concerning temperature and CaCO3. The filtration system with a detention time of 240 minutes can be considered as an alternative groundwater treatment solution for the deep well of Al-Hikmah Mosque, Universitas Negeri Malang.
{"title":"EFFECT OF DETENTION TIME IN REDUCING FE AND MN CONCENTRATION OF GROUNDWATER: CASE STUDY AT THE UNIVERSITAS NEGERI MALANG","authors":"Fadiyah Ghina Salsabila, Anie Yulistyorini, H. Takaijudin, Imam Alfianto","doi":"10.25105/urbanenvirotech.v7i1.18550","DOIUrl":"https://doi.org/10.25105/urbanenvirotech.v7i1.18550","url":null,"abstract":"Groundwater is a natural resource used by humans to fulfil their living needs which should meet the Republik Indonesia Minister of Health Regulation No. 2/2023. Aim: This research aims to contribute to solve these challenges and meet the clean water quality standard. Methodology and Results: The groundwater sample was taken from the deep well of Al-Hikmah Mosque, Universitas Negeri Malang (UM). It was indicated to contain Fe and Mn, as evidenced by its yellowish colour when left undisturbed for some time. A laboratory-scale experiment was conducted for the deep well treatment and analysis. The treatment system consists of aeration, sedimentation, and filtration. The filtration unit comprises several natural media such as gravel, silica sand, zeolite, and activated charcoal. This experiment used detention times of 120 and 240 minutes as dependent variables. Conclusion, significance, and impact study: The results showed that detention times of 120 and 240 min have efficiency on turbidity reduction of 92.86% and 98.69%, Total Dissolved Solids (TDS) of 10.42% and 14.47%, Fe of 23.01%, Mn of 62.39% and 94.70%, and for CaCO3 of 2.98% and 11.17%, respectively. The research findings demonstrated that a detention time of 240 min generated water quality that met the Minister of Health No. 2/2023 standards. Detention times of 120 minutes and 240 minutes led to significant differences in water quality concerning temperature and CaCO3. The filtration system with a detention time of 240 minutes can be considered as an alternative groundwater treatment solution for the deep well of Al-Hikmah Mosque, Universitas Negeri Malang.","PeriodicalId":329428,"journal":{"name":"INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY","volume":"88 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140235118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-17DOI: 10.25105/urbanenvirotech.v7i1.19125
Z. Mustapha, Benjamin Boahene Akomah, S. K. Ansah, C. K. Tieru, Daniel Botchwey Asiedu, Isaac Acquah
Construction projects have caused significant disruption in urban areas. Despite the need to limit the environmental impacts of construction operations, stakeholders often fall short, resulting in negative consequences for nearby residents. Aim: This study aimed to investigate the effects of various construction activities on residents of the UCC and CCTU campuses in the Cape Coast North Metropolis, Ghana. Methodology and Results: Using a stratified and random sample of 100 residential houses from the University of Cape Coast and Cape Coast Technical University, questionnaires were administered to residents in university-owned dormitories, private hostels, and faculty/staff housing. Data were analysed using Excel and IBM SPSS, focusing on modelling the relationship between variables and assessing their influence. The results indicated that construction operations impacted the environment and residents of the Cape Coast North Metropolis. The R and R Square values indicated that construction activities affected residents' responses. Meanwhile, the adjusted R Square accounted for the complexity of the model, with a standard error measuring the average prediction error. The constant term was considered significant, representing the expected value when all predictors were zero. Conclusion, significance, and impact: From initial ground disturbance to eventual decommissioning, construction projects can lead to soil degradation, habitat destruction, and increased carbon emissions. There is a need to prioritise sustainable and resident-friendly construction practices by incorporating responsible construction methods that mitigate the negative impacts on both residents and the environment. Continuous evaluation will enable better management and improvement of construction processes, leading to stakeholder benefits. Policymakers should explore eco-friendly building techniques, considering construction impacts.
建筑项目对城市地区造成了严重破坏。尽管有必要限制施工作业对环境的影响，但利益相关者往往做不到这一点，从而对附近居民造成负面影响。目的：本研究旨在调查各种施工活动对加纳海岸角北部大都会的 UCC 和 CCTU 校园居民的影响。方法和结果：通过对海岸角大学和海岸角技术大学的 100 栋住宅进行分层随机抽样，对大学宿舍、私人宿舍和教职工宿舍的居民进行了问卷调查。使用 Excel 和 IBM SPSS 对数据进行了分析，重点是模拟变量之间的关系并评估其影响。结果表明，施工作业对海岸角北部大都市的环境和居民产生了影响。R 值和 R 平方值表明，施工活动影响了居民的反应。同时，调整后的 R 平方说明了模型的复杂性，标准误差衡量了平均预测误差。常数项被认为是有意义的，代表了当所有预测因素为零时的预期值。结论、意义和影响：从最初的地面扰动到最终的退役，建筑项目都会导致土壤退化、栖息地破坏和碳排放增加。有必要通过采用负责任的施工方法来减轻对居民和环境的负面影响，从而优先采用可持续的、对居民友好的施工方法。持续评估将有助于更好地管理和改进施工流程，从而使利益相关者受益。政策制定者应考虑施工影响，探索生态友好型建筑技术。
{"title":"IMPACT OF CONSTRUCTION ACTIVITIES ON RESIDENTS OF CAPE COAST NORTH METROPOLIS, GHANA","authors":"Z. Mustapha, Benjamin Boahene Akomah, S. K. Ansah, C. K. Tieru, Daniel Botchwey Asiedu, Isaac Acquah","doi":"10.25105/urbanenvirotech.v7i1.19125","DOIUrl":"https://doi.org/10.25105/urbanenvirotech.v7i1.19125","url":null,"abstract":"Construction projects have caused significant disruption in urban areas. Despite the need to limit the environmental impacts of construction operations, stakeholders often fall short, resulting in negative consequences for nearby residents. Aim: This study aimed to investigate the effects of various construction activities on residents of the UCC and CCTU campuses in the Cape Coast North Metropolis, Ghana. Methodology and Results: Using a stratified and random sample of 100 residential houses from the University of Cape Coast and Cape Coast Technical University, questionnaires were administered to residents in university-owned dormitories, private hostels, and faculty/staff housing. Data were analysed using Excel and IBM SPSS, focusing on modelling the relationship between variables and assessing their influence. The results indicated that construction operations impacted the environment and residents of the Cape Coast North Metropolis. The R and R Square values indicated that construction activities affected residents' responses. Meanwhile, the adjusted R Square accounted for the complexity of the model, with a standard error measuring the average prediction error. The constant term was considered significant, representing the expected value when all predictors were zero. Conclusion, significance, and impact: From initial ground disturbance to eventual decommissioning, construction projects can lead to soil degradation, habitat destruction, and increased carbon emissions. There is a need to prioritise sustainable and resident-friendly construction practices by incorporating responsible construction methods that mitigate the negative impacts on both residents and the environment. Continuous evaluation will enable better management and improvement of construction processes, leading to stakeholder benefits. Policymakers should explore eco-friendly building techniques, considering construction impacts.","PeriodicalId":329428,"journal":{"name":"INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY","volume":"78 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140235138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-17DOI: 10.25105/urbanenvirotech.v7i1.18775
Sri Widyastuti, Yitno Utomo, Annisa Firdayanti, R. Ratnawati, Umi Solikah
Bioplastic is a plastic that is easily decomposed naturally by the activity of microorganisms without leaving toxic residues because of its that can return to nature. Aim: This study aim to examine the quality of bioplastics from variations of tapioca starch and rice waste raw materials for optimal composition. Methodology and Results: The method used is by mixing the raw material of tapioca starch waste and rice waste with variations in the composition of the material; 100% rice waste, 100% tapioca starch waste, 30% tapioca starch waste: 70% rice waste, 50% tapioca starch waste: 50% rice waste, 70% tapioca starch waste: 30% rice waste. Add 10 mL of glycerol, 30 mL of distilled water, 40 mL of acetate solvent, and 40 ml of 96% ethanol. The product will be tested on a laboratory scale for tensile strength, elongation at break, FTIR tests, and biodegradation according to SNI 7188.7:2016 for the bioplastic category that is easily biodegradable. The result shows that the optimal composition was found in the composition of 100% rice waste raw material with the quality of the tensile strength test results of 3,45 MPa, the value of elongation at break 3,8%, and the value of biodegradation 100%. The resulting bioplastics contain functional groups O-H (hydroxyl) bonded to hydrogen, C-H (alkanes), C≡C (alkynes), esters, simple aromatic compounds, C-O (carboxyl), C=C (alkenes), and hydrocarbons -(CH2)n. Conclusion, significance, and impact of study: The use of starch to produce biodegradable materials is because it is environmentally friendly, easily degraded, available in large quantities, and affordable, moreover, the bioplastics derived from these waste sources are typically biodegradable, meaning they can break down into natural compounds under certain conditions, reducing environmental pollution.
{"title":"BIOPLASTIC FROM TAPIOCA STARCH WASTE AND RICE WASTE","authors":"Sri Widyastuti, Yitno Utomo, Annisa Firdayanti, R. Ratnawati, Umi Solikah","doi":"10.25105/urbanenvirotech.v7i1.18775","DOIUrl":"https://doi.org/10.25105/urbanenvirotech.v7i1.18775","url":null,"abstract":"Bioplastic is a plastic that is easily decomposed naturally by the activity of microorganisms without leaving toxic residues because of its that can return to nature. Aim: This study aim to examine the quality of bioplastics from variations of tapioca starch and rice waste raw materials for optimal composition. Methodology and Results: The method used is by mixing the raw material of tapioca starch waste and rice waste with variations in the composition of the material; 100% rice waste, 100% tapioca starch waste, 30% tapioca starch waste: 70% rice waste, 50% tapioca starch waste: 50% rice waste, 70% tapioca starch waste: 30% rice waste. Add 10 mL of glycerol, 30 mL of distilled water, 40 mL of acetate solvent, and 40 ml of 96% ethanol. The product will be tested on a laboratory scale for tensile strength, elongation at break, FTIR tests, and biodegradation according to SNI 7188.7:2016 for the bioplastic category that is easily biodegradable. The result shows that the optimal composition was found in the composition of 100% rice waste raw material with the quality of the tensile strength test results of 3,45 MPa, the value of elongation at break 3,8%, and the value of biodegradation 100%. The resulting bioplastics contain functional groups O-H (hydroxyl) bonded to hydrogen, C-H (alkanes), C≡C (alkynes), esters, simple aromatic compounds, C-O (carboxyl), C=C (alkenes), and hydrocarbons -(CH2)n. Conclusion, significance, and impact of study: The use of starch to produce biodegradable materials is because it is environmentally friendly, easily degraded, available in large quantities, and affordable, moreover, the bioplastics derived from these waste sources are typically biodegradable, meaning they can break down into natural compounds under certain conditions, reducing environmental pollution.","PeriodicalId":329428,"journal":{"name":"INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140235274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-25DOI: 10.25105/urbanenvirotech.v6i2.16654
Mustika Sufiati Purwanegara, Anak Agung Ngurah Tata Pinandhika, Yang Sun, Regina Athalia
One of the biggest environmental issues facing the planet today is plastic garbage, which was created by people and has an effect on them as well. Although though governments have implemented policies, rules, and other initiatives to increase public awareness of and engagement in decreasing plastic trash, the statistics has not changed, and this amount keeps rising every year. Several nations appear to be having trouble solving this problem. In addition, according to the World Bank, the country produces more plastics the wealthy its citizens are. By evaluating behavior and educating people, culture and education can be the answer to this problem. As people get more educated, their awareness of and care for the environment increases. The relationship between each of these factors—culture, education, national income, and government role and environmental problems might potentially help minimize plastic waste. Consequently, the goal of this study is to pinpoint the variables that may have an impact on the volume of plastic garbage and examine how these variables may affect the quantity of plastic waste in various nations. Hofstede's national culture dimension (Power Distance, Collectivism and Individualism, Masculinity and Femininity, Uncertainty Avoidance, Long-term Orientation and Short-term Orientation, Indulgence and Restraint), wealth per capita, education, and the government's plan and policy on sustainable consumption are the variables that will be examined. In this study, worldwide data for the year 2018 is gathered from 66 different nations utilizing secondary sources, and the data is then analyzed using the Multiple Linear Regression approach. According to the findings, there is a strong correlation between individualism and collectivism and the volume of plastic garbage. The results of this study should help each nation's government reduce the quantity of plastic garbage that is generated.
{"title":"ANALYZING THE FACTORS THAT AFFECT THE AMOUNT OF PLASTIC WASTE","authors":"Mustika Sufiati Purwanegara, Anak Agung Ngurah Tata Pinandhika, Yang Sun, Regina Athalia","doi":"10.25105/urbanenvirotech.v6i2.16654","DOIUrl":"https://doi.org/10.25105/urbanenvirotech.v6i2.16654","url":null,"abstract":"One of the biggest environmental issues facing the planet today is plastic garbage, which was created by people and has an effect on them as well. Although though governments have implemented policies, rules, and other initiatives to increase public awareness of and engagement in decreasing plastic trash, the statistics has not changed, and this amount keeps rising every year. Several nations appear to be having trouble solving this problem. In addition, according to the World Bank, the country produces more plastics the wealthy its citizens are. By evaluating behavior and educating people, culture and education can be the answer to this problem. As people get more educated, their awareness of and care for the environment increases. The relationship between each of these factors—culture, education, national income, and government role and environmental problems might potentially help minimize plastic waste. Consequently, the goal of this study is to pinpoint the variables that may have an impact on the volume of plastic garbage and examine how these variables may affect the quantity of plastic waste in various nations. Hofstede's national culture dimension (Power Distance, Collectivism and Individualism, Masculinity and Femininity, Uncertainty Avoidance, Long-term Orientation and Short-term Orientation, Indulgence and Restraint), wealth per capita, education, and the government's plan and policy on sustainable consumption are the variables that will be examined. In this study, worldwide data for the year 2018 is gathered from 66 different nations utilizing secondary sources, and the data is then analyzed using the Multiple Linear Regression approach. According to the findings, there is a strong correlation between individualism and collectivism and the volume of plastic garbage. The results of this study should help each nation's government reduce the quantity of plastic garbage that is generated.","PeriodicalId":329428,"journal":{"name":"INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135113930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-30DOI: 10.25105/urbanenvirotech.v6i2.17835
M. Syafila, M. S. Abfertiawan, M. Handajani, F. Hasan, Hanifah Oktaviani, Nur Novilina Arifianingsih
Indonesia is a country that has considerable coal reserves with coal resources of 149.01 billion tons. One of the problems of coal mining is turbidity. The turbidity is caused by the excavation of the open pit mine so that rainwater contact with the main wall. So that mud is formed, which can increase turbidity levels. The concentration of Total Suspended Solids (TSS) due to this phenomenon reaches 5,400 mg/L. Aim: This study aims to set aside TSS by electrocoagulation processing method using a batch system with eight pairs of iron electrodes arranged monopolarly. Methodology and Results: Comparisons using statistically independent t-tests showed that there was no significant difference between the iron and aluminium electrodes in the pH parameter. Conclusion, significance, and impact study:There were significant differences between iron and aluminum electrodes in the parameters of TDS and TSS. In the measured TDS and TSS parameters, the electrocoagulation process using iron electrodes has a higher value than aluminum electrodes. In the TSS removal, there is no significant difference between the two electrodes (iron and aluminium).
{"title":"STATISTICAL ANALYSIS IN SELECTING THE BEST ELECTRODE BETWEEN ALUMINUM AND IRON IN TSS REMOVAL USING ELECTROCOAGULATION","authors":"M. Syafila, M. S. Abfertiawan, M. Handajani, F. Hasan, Hanifah Oktaviani, Nur Novilina Arifianingsih","doi":"10.25105/urbanenvirotech.v6i2.17835","DOIUrl":"https://doi.org/10.25105/urbanenvirotech.v6i2.17835","url":null,"abstract":"Indonesia is a country that has considerable coal reserves with coal resources of 149.01 billion tons. One of the problems of coal mining is turbidity. The turbidity is caused by the excavation of the open pit mine so that rainwater contact with the main wall. So that mud is formed, which can increase turbidity levels. The concentration of Total Suspended Solids (TSS) due to this phenomenon reaches 5,400 mg/L. Aim: This study aims to set aside TSS by electrocoagulation processing method using a batch system with eight pairs of iron electrodes arranged monopolarly. Methodology and Results: Comparisons using statistically independent t-tests showed that there was no significant difference between the iron and aluminium electrodes in the pH parameter. Conclusion, significance, and impact study:There were significant differences between iron and aluminum electrodes in the parameters of TDS and TSS. In the measured TDS and TSS parameters, the electrocoagulation process using iron electrodes has a higher value than aluminum electrodes. In the TSS removal, there is no significant difference between the two electrodes (iron and aluminium).","PeriodicalId":329428,"journal":{"name":"INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY","volume":"46 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125900898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-30DOI: 10.25105/urbanenvirotech.v6i2.13826
D. Aulia, Vian Marantha Haryanto, A. B. Waseso, Endarmadi Aji Prayitno, M. M. Sampetoding
International Construction Costs published in Comparison 2020 continued to increase as an impact of the Covid-19 pandemic, The modular system is considered able to answer the problems of increasing costs. Although modular construction has been widely applied to low-rise buildings, application in high-rise buildings remains limited, less than 1% worldwide. The need for residential high-rise building applying modular construction in Indonesia becomes important. The interdependence between parties in modular projects is greater than in conventional methods. Unavailability of design guidelines hinders the construction industry in implementing modular technology. The purpose of this study is to analyze the critical success factors for modular construction of residential high-rise buildings applying risk-based management to improve project time performance. Forty-one Indicators were drawn from literature reviews and specialist interviews to conduct a sustainability evaluation. The survey was submitted to case project developers, designers, supervisors, and contractors in Indonesia, thereafter statistically analyzed using SPSS and risk management analysis with three stages: risk sources, risk drivers and risk causes. Critical success factors for drawing approvals have a considerable influence on modular construction among 15 other factors, followed by supply chain and design standardization. It is necessary to mitigate these risks to improve project time performance.
{"title":"CRITICAL SUCCESS FACTORS FOR MODULAR CONSTRUCTION ON HIGH-RISE RESIDENTIAL BUILDINGS BASED RISK MANAGEABILITY TO INCREASE PROJECT TIME PERFORMANCE","authors":"D. Aulia, Vian Marantha Haryanto, A. B. Waseso, Endarmadi Aji Prayitno, M. M. Sampetoding","doi":"10.25105/urbanenvirotech.v6i2.13826","DOIUrl":"https://doi.org/10.25105/urbanenvirotech.v6i2.13826","url":null,"abstract":"International Construction Costs published in Comparison 2020 continued to increase as an impact of the Covid-19 pandemic, The modular system is considered able to answer the problems of increasing costs. Although modular construction has been widely applied to low-rise buildings, application in high-rise buildings remains limited, less than 1% worldwide. The need for residential high-rise building applying modular construction in Indonesia becomes important. The interdependence between parties in modular projects is greater than in conventional methods. Unavailability of design guidelines hinders the construction industry in implementing modular technology. The purpose of this study is to analyze the critical success factors for modular construction of residential high-rise buildings applying risk-based management to improve project time performance. Forty-one Indicators were drawn from literature reviews and specialist interviews to conduct a sustainability evaluation. The survey was submitted to case project developers, designers, supervisors, and contractors in Indonesia, thereafter statistically analyzed using SPSS and risk management analysis with three stages: risk sources, risk drivers and risk causes. Critical success factors for drawing approvals have a considerable influence on modular construction among 15 other factors, followed by supply chain and design standardization. It is necessary to mitigate these risks to improve project time performance.","PeriodicalId":329428,"journal":{"name":"INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133978126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-30DOI: 10.25105/urbanenvirotech.v6i2.16834
Otniel Stefen, A. Prasetyo, Qomariatus Sholihah, T. Osawa, Ni Made, Pertiwi Jaya, Dwi Arbani
Electric two-wheelers are becoming increasingly popular in Indonesia, particularly in the city of Denpasar; due to government regulations and social action, programs growing the number of electric motorcycles will impact the generation of toxic and hazardous waste in the form of used batteries which can cause environmental pollution if not managed properly. In connection with the establishment of a lifecycle-based business ecosystem and reduction of pollution risks, the thing that needs serious attention is the development of independent battery waste management facilities in Denpasar City. Aim: In this regard, a study was conducted on the development and management strategy of used battery waste for electric motorcycles in Denpasar City. Methodology and Results: Data was analyzed on primary data collected through in-depth interviews with key persons and questionnaires and secondary data obtained from related institutions. The development strategy was directed at six indicators, i.e., economy, interest, infrastructure, media, technology, and battery waste management facilities. By considering the six strategy indicators, the location of battery waste management facilities from four sub-districts in Denpasar City was determined using the Analytic Hierarchy Process (AHP) method, where the South Denpasar Sub-district was obtained as the top priority with a value of 0.403. Conclusion, significance, and impact study: This strategy is expected to be a direction for implementing electric motorcycle vehicles in Denpasar City
{"title":"DETERMINATION OF BATTERY WASTE MANAGEMENT STRATEGY IN THE IMPLEMENTATION OF ELECTRIC MOTORCYCLES IN DENPASAR CITY","authors":"Otniel Stefen, A. Prasetyo, Qomariatus Sholihah, T. Osawa, Ni Made, Pertiwi Jaya, Dwi Arbani","doi":"10.25105/urbanenvirotech.v6i2.16834","DOIUrl":"https://doi.org/10.25105/urbanenvirotech.v6i2.16834","url":null,"abstract":"Electric two-wheelers are becoming increasingly popular in Indonesia, particularly in the city of Denpasar; due to government regulations and social action, programs growing the number of electric motorcycles will impact the generation of toxic and hazardous waste in the form of used batteries which can cause environmental pollution if not managed properly. In connection with the establishment of a lifecycle-based business ecosystem and reduction of pollution risks, the thing that needs serious attention is the development of independent battery waste management facilities in Denpasar City. Aim: In this regard, a study was conducted on the development and management strategy of used battery waste for electric motorcycles in Denpasar City. Methodology and Results: Data was analyzed on primary data collected through in-depth interviews with key persons and questionnaires and secondary data obtained from related institutions. The development strategy was directed at six indicators, i.e., economy, interest, infrastructure, media, technology, and battery waste management facilities. By considering the six strategy indicators, the location of battery waste management facilities from four sub-districts in Denpasar City was determined using the Analytic Hierarchy Process (AHP) method, where the South Denpasar Sub-district was obtained as the top priority with a value of 0.403. Conclusion, significance, and impact study: This strategy is expected to be a direction for implementing electric motorcycle vehicles in Denpasar City","PeriodicalId":329428,"journal":{"name":"INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY","volume":"5 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114020191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-11DOI: 10.25105/urbanenvirotech.v6i2.16833
M. Handajani, Indira Nathania Pamio, M. Syafila, Nur Novilina Arifianingsih
Personal Care Cosmetic Products (PCCPs) are used on the exterior of the body, such as the skin, nails, hair, lips, external genitalia, teeth, and oral membranes. Greywater from a bathing activity is a significant contributor to domestic wastewater quantity. The greywater contains residual substances from the rinsing process of body care products. Aim: This study will focus on the characteristic and the specific pollutant load of greywater generated from the usage of shower gel. Methodology and Results: The characterization and specific pollutant loads are conducted based on artificial greywater which is made from three brands of shower gel which is diluted in tap water. The greywater from body cleaning activities has a pH value in the range of 7.26-7.33; total phosphate in the range of 1.71-3.09 mg/L; the value of NTK total Kjedahl nitrogen in the range of 2.45-4.03 mg/L; total COD in the range of 380.97-506.16 mg/L; dissolved COD values in the range of 310.92-393.68 mg/L; TSS value in the range of 62-229.50 mg/L; and TDS values in the range of 283-376.67 mg/L. The specific pollutant load generated from shower gel usage in greywater are 0.012 g TP/person/day; 0.016 g TKN/person/day; 2.14 g Total COD/person/day; 1.59 g dissolved COD/person/day; 0.94 g/person/day for TSS; and 1.48 g/person/day for TDS. Conclusion, significance, and impact study: The Greywater from shower gel usage contains physical and chemical constituents that can promote environmental deterioration. The finding of this research will provide useful information for domestic wastewater management and system design, especially for urban areas in Indonesia.
{"title":"CHARACTERISATION AND POLLUTANT LOAD OF GREYWATER CONTAINING PERSONAL CARE COSMETIC PRODUCTS (PCCPS) FOR BODY CARE","authors":"M. Handajani, Indira Nathania Pamio, M. Syafila, Nur Novilina Arifianingsih","doi":"10.25105/urbanenvirotech.v6i2.16833","DOIUrl":"https://doi.org/10.25105/urbanenvirotech.v6i2.16833","url":null,"abstract":"Personal Care Cosmetic Products (PCCPs) are used on the exterior of the body, such as the skin, nails, hair, lips, external genitalia, teeth, and oral membranes. Greywater from a bathing activity is a significant contributor to domestic wastewater quantity. The greywater contains residual substances from the rinsing process of body care products. Aim: This study will focus on the characteristic and the specific pollutant load of greywater generated from the usage of shower gel. Methodology and Results: The characterization and specific pollutant loads are conducted based on artificial greywater which is made from three brands of shower gel which is diluted in tap water. The greywater from body cleaning activities has a pH value in the range of 7.26-7.33; total phosphate in the range of 1.71-3.09 mg/L; the value of NTK total Kjedahl nitrogen in the range of 2.45-4.03 mg/L; total COD in the range of 380.97-506.16 mg/L; dissolved COD values in the range of 310.92-393.68 mg/L; TSS value in the range of 62-229.50 mg/L; and TDS values in the range of 283-376.67 mg/L. The specific pollutant load generated from shower gel usage in greywater are 0.012 g TP/person/day; 0.016 g TKN/person/day; 2.14 g Total COD/person/day; 1.59 g dissolved COD/person/day; 0.94 g/person/day for TSS; and 1.48 g/person/day for TDS. Conclusion, significance, and impact study: The Greywater from shower gel usage contains physical and chemical constituents that can promote environmental deterioration. The finding of this research will provide useful information for domestic wastewater management and system design, especially for urban areas in Indonesia.","PeriodicalId":329428,"journal":{"name":"INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY","volume":"91 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114003335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-11DOI: 10.25105/urbanenvirotech.v6i2.16932
Tasya Oemar, P. Purwaningrum, R. Ruhiyat, Fitrio Ashardiono
Black Soldier Fly (BSF) larvae are known to have the ability to process food loss and waste and reduce the weight of food loss and waste, by producing decomposition products that have beneficial values. Food loss and waste needs to be reduced to reduce the burden of waste entering the Final Disposal (TPA). Aim: The purpose of this study was to determine the ability of BSF larvae and to determine the quality of the decomposition results in processing food loss and waste in the Taman Sari District on a laboratory scale. Methodology and Results: Taman Sari Distrisct is a high dense populated area Total days of bioconversion activity is 12 days, giving back 1,000 grams of municipal waste organic, containing food loss and food waste, according to variation is given repeatedly on the 1st, 5th, and 8th days for each 12 sample code. The amount of 5 days old (5-DOL) maggot used for each sample code is 30 grams. Conclusion, significance, and impact study: The percentage reduction in processing from 3 kg of food loss and waste can reach 86% with the average residue produced in the form of 415.67 grams of solid compost and 221.7 grams of prepupa. Bred prepupa will evolve into several stages: pupa, fly, egg, baby larvae, and 5-DOL for 57 days on its life cycle.
{"title":"POTENTIAL OF BLACK SOLDIER FLY (BSF) IN REDUCING MUNICIPAL FOOD LOSS AND WASTE (FLW) AT TAMAN SARI DISTRICT, WEST JAKARTA","authors":"Tasya Oemar, P. Purwaningrum, R. Ruhiyat, Fitrio Ashardiono","doi":"10.25105/urbanenvirotech.v6i2.16932","DOIUrl":"https://doi.org/10.25105/urbanenvirotech.v6i2.16932","url":null,"abstract":"Black Soldier Fly (BSF) larvae are known to have the ability to process food loss and waste and reduce the weight of food loss and waste, by producing decomposition products that have beneficial values. Food loss and waste needs to be reduced to reduce the burden of waste entering the Final Disposal (TPA). Aim: The purpose of this study was to determine the ability of BSF larvae and to determine the quality of the decomposition results in processing food loss and waste in the Taman Sari District on a laboratory scale. Methodology and Results: Taman Sari Distrisct is a high dense populated area Total days of bioconversion activity is 12 days, giving back 1,000 grams of municipal waste organic, containing food loss and food waste, according to variation is given repeatedly on the 1st, 5th, and 8th days for each 12 sample code. The amount of 5 days old (5-DOL) maggot used for each sample code is 30 grams. Conclusion, significance, and impact study: The percentage reduction in processing from 3 kg of food loss and waste can reach 86% with the average residue produced in the form of 415.67 grams of solid compost and 221.7 grams of prepupa. Bred prepupa will evolve into several stages: pupa, fly, egg, baby larvae, and 5-DOL for 57 days on its life cycle.","PeriodicalId":329428,"journal":{"name":"INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122265820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-11DOI: 10.25105/urbanenvirotech.v6i2.16933
M. Maulani, G. Jasmine, R. Nugraheni, M. Djumantara, A. Nugrahanti, B. Satiyawira, C. Rosyidan, L. Samura, H. Widiyatni, P. Pauhesti
Indonesia has a large amount of liquid waste originating from the tofu industry. Currently, the treatment of tofu industrial wastewater is carried out using both anaerobic and aerobic methods, but both methods still have several weaknesses. In this study, the tofu industrial wastewater was utilized as a culture medium for Spirulina sp. to provide economic value from wastewater that can be used as bioethanol, pharmaceuticals, and food products rich in omega 3, chlorophyll, carotenoids. Aim: The growth of Spirulina sp. is closely related to the availability of macro and micronutrients as nutrients and the influence of environmental conditions, so this study was aimed to see the best variation of the addition of urea and NaHCO3 as additional nutrients to maximize growth and cell density of Spirulina sp. with tofu industrial wastewater media. Methodology and Results: This study was done by culvitating Spirulina sp in the growth media, measuring the Optical Density (OD), and analyzing quantitatively and using ANOVA on IBM SPSS Statistics version 20. The study indicated that adding urea and NaHCO3 to Spirulina sp. had no effect on cell density and growth rate. Treatment with addition of urea 0.36 g/500 ml without additional of NaHCO3 had the highest growth rate, 0.00852/day, and the highest cell density value on Spirulina sp. growth. Conclusion, significance, and impact study: The tofu liquid waste can be used as a new alternative used as fertilizer because in the liquid tofu waste, it provides the nutrients needed by Spirulina sp.
印尼有大量源自豆腐行业的废液。目前，豆腐工业废水的处理有厌氧和好氧两种方法，但这两种方法都存在一些缺点。本研究利用豆腐工业废水作为螺旋藻的培养基，从废水中提取富含omega - 3、叶绿素、类胡萝卜素的生物乙醇、药品和食品，为螺旋藻提供经济价值。目的:螺旋藻的生长与宏量和微量营养物质的可用性以及环境条件的影响密切相关，因此本研究旨在研究尿素和NaHCO3作为附加营养物质的最佳变化，以最大限度地提高螺旋藻在豆腐工业废水培养基中的生长和细胞密度。方法与结果:本研究通过在生长培养基中培养螺旋藻，测量光密度(OD)，并使用IBM SPSS Statistics version 20进行定量分析和方差分析。研究表明，在螺旋藻中添加尿素和NaHCO3对螺旋藻细胞密度和生长速率没有影响。尿素添加量为0.36 g/500 ml，不添加NaHCO3处理的螺旋藻生长速率最高，为0.00852/d，细胞密度值最高。结论、意义及影响研究:豆腐废液中含有螺旋藻所需的营养物质，可作为一种新的肥料替代品。
{"title":"USE OF ANOVA STATISTICAL METHOD IN EVALUATION OF TOFU WASTEWATER USED FOR SPIRULINA CULTURE MEDIUM ENRICHED WITH UREA AND NaHCO3","authors":"M. Maulani, G. Jasmine, R. Nugraheni, M. Djumantara, A. Nugrahanti, B. Satiyawira, C. Rosyidan, L. Samura, H. Widiyatni, P. Pauhesti","doi":"10.25105/urbanenvirotech.v6i2.16933","DOIUrl":"https://doi.org/10.25105/urbanenvirotech.v6i2.16933","url":null,"abstract":"Indonesia has a large amount of liquid waste originating from the tofu industry. Currently, the treatment of tofu industrial wastewater is carried out using both anaerobic and aerobic methods, but both methods still have several weaknesses. In this study, the tofu industrial wastewater was utilized as a culture medium for Spirulina sp. to provide economic value from wastewater that can be used as bioethanol, pharmaceuticals, and food products rich in omega 3, chlorophyll, carotenoids. Aim: The growth of Spirulina sp. is closely related to the availability of macro and micronutrients as nutrients and the influence of environmental conditions, so this study was aimed to see the best variation of the addition of urea and NaHCO3 as additional nutrients to maximize growth and cell density of Spirulina sp. with tofu industrial wastewater media. Methodology and Results: This study was done by culvitating Spirulina sp in the growth media, measuring the Optical Density (OD), and analyzing quantitatively and using ANOVA on IBM SPSS Statistics version 20. The study indicated that adding urea and NaHCO3 to Spirulina sp. had no effect on cell density and growth rate. Treatment with addition of urea 0.36 g/500 ml without additional of NaHCO3 had the highest growth rate, 0.00852/day, and the highest cell density value on Spirulina sp. growth. Conclusion, significance, and impact study: The tofu liquid waste can be used as a new alternative used as fertilizer because in the liquid tofu waste, it provides the nutrients needed by Spirulina sp.","PeriodicalId":329428,"journal":{"name":"INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY","volume":"214 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132147572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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