Pub Date : 2023-12-27DOI: 10.26554/ijems.2023.7.4.147-152
Tri Karimah Ramadhini, T. Agustina, Elda Melwita, M. Wijayanti
Heavy metals are the main pollutant substances in the environment. Heavy metals are a type of metal with high density and are very dangerous to living organisms, especially humans. Living organisms can adsorb the bioaccumulative and sedimentation of heavy metals that settle in water. Some compounds which found in wastewater including Cadmium (Cd), Copper (Cu), Iron (Fe), and Lead (Pb). These heavy metals cannot naturally degrade, additional processing is required before it being released into the environment. To prevent environmental pollution impacts, wastewater containing heavy metals must be handled properly and optimally. One method that can be applied for wastewater treatment is degradation by photocatalysis, utilizing the assistance of light. This research is to investigate the effect of pH and irradiation time on the degradation of Cd (cadmium), Cu (Copper), Fe (Iron), and Pb (Lead) heavy metals. To enhance the photocatalytic activity, the synthesis of ZnO-Zeolite nanocomposites was conducted. The ZnO-Zeolite nanocomposites produced were analyzed by SEM-EDX and XRD. The utilization of ZnO-Zeolite nanocomposites is deemed effective in reducing heavy metal concentrations. The degradation with Ultraviolet (UV) light exposure runs within 15-120 minutes with pH variation between 4-8. The degradation of heavy metal runs at 60 minutes and 120 minutes showing an optimum percentage removal of metals approaching 100%. The optimum pH values for Cd, Cu, Fe, and Pb are pH 8, pH 7, pH 6, and pH 8, respectively. The sequential metal degradation percentages are 98.96%, 95.43%, 96.07%, and 95.53%, respectively.
{"title":"Photocatalytic Degradation of Heavy Metals Cd, Cu, Fe and Pb Using ZnO-Zeolite Nanocomposite","authors":"Tri Karimah Ramadhini, T. Agustina, Elda Melwita, M. Wijayanti","doi":"10.26554/ijems.2023.7.4.147-152","DOIUrl":"https://doi.org/10.26554/ijems.2023.7.4.147-152","url":null,"abstract":"Heavy metals are the main pollutant substances in the environment. Heavy metals are a type of metal with high density and are very dangerous to living organisms, especially humans. Living organisms can adsorb the bioaccumulative and sedimentation of heavy metals that settle in water. Some compounds which found in wastewater including Cadmium (Cd), Copper (Cu), Iron (Fe), and Lead (Pb). These heavy metals cannot naturally degrade, additional processing is required before it being released into the environment. To prevent environmental pollution impacts, wastewater containing heavy metals must be handled properly and optimally. One method that can be applied for wastewater treatment is degradation by photocatalysis, utilizing the assistance of light. This research is to investigate the effect of pH and irradiation time on the degradation of Cd (cadmium), Cu (Copper), Fe (Iron), and Pb (Lead) heavy metals. To enhance the photocatalytic activity, the synthesis of ZnO-Zeolite nanocomposites was conducted. The ZnO-Zeolite nanocomposites produced were analyzed by SEM-EDX and XRD. The utilization of ZnO-Zeolite nanocomposites is deemed effective in reducing heavy metal concentrations. The degradation with Ultraviolet (UV) light exposure runs within 15-120 minutes with pH variation between 4-8. The degradation of heavy metal runs at 60 minutes and 120 minutes showing an optimum percentage removal of metals approaching 100%. The optimum pH values for Cd, Cu, Fe, and Pb are pH 8, pH 7, pH 6, and pH 8, respectively. The sequential metal degradation percentages are 98.96%, 95.43%, 96.07%, and 95.53%, respectively.","PeriodicalId":13453,"journal":{"name":"Indonesian Journal of Environmental Management and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139154381","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 : 2023-12-27DOI: 10.26554/ijems.2023.7.4.137-146
Goremsu Getachew
Native fodder and fruit species provide various products and services to local communities besides their fruit (food) and fodder supply in our country including in the study area. Although, there is rich traditional knowledge on propagation methods of native fodder and fruit species and their local use, but little recognition has been given by forestry research and extension efforts to enhance them. The general objective of the study was to investigate the use value and propagation methods of native fodder and fruit species in the Merhabete district, Ethiopia. A total of 127 households were randomly selected and interviewed about local use and propagation methods of native fodder and fruit species. The study indicated that the majority of native fodder and fruit species were used for firewood (23.9%) followed by charcoal (10.9%), timber, and construction wood (10.6%), fencing (9.3%), soil fertility improvement (9.1%), farm tool (7.1%), and medicine (3.3%). Native fodder and fruit species (42.7%) were propagated through wilding (natural regeneration) and the remainder were propagated through seedlings (7.2%), seed (6.06%), and stem cutting (4.8%). Overgrazing (46.5%) followed by overexploitation (22%), climate change/drought (20.5%), and disease and pest (11%) were the major regeneration constraints to native fodder and fruit trees/shrubs species in the study area. Therefore, proper involvement either through research or development works are essential to reduce the propagation constraint of studied species. Ziziphus spina-christi (L.) Desf. followed by Faidherbia albida (Delile) A. Chev., Cordia africana Lam., Ximenia americana L., and Acacia senegal (L.) Willd. were the most preferred species for planting by farmers in the study area. Domestication should focus on the preferred top five species to promote species conservation and sustainable use.
在我国（包括研究地区），本地饲料和水果物种除了提供水果（食物）和饲料外，还为当地社区提供各种产品和服务。虽然关于本地饲料和水果物种的繁殖方法及其在当地的使用有着丰富的传统知识，但林业研究和推广工作却很少认识到这一点。这项研究的总体目标是调查埃塞俄比亚 Merhabete 地区本地饲料和水果物种的使用价值和繁殖方法。研究人员随机选取了 127 户家庭，就本地饲料和水果物种的使用和繁殖方法进行了访谈。研究表明，大多数本地饲料和水果物种被用作木柴（23.9%），其次是木炭（10.9%）、木材和建筑木材（10.6%）、栅栏（9.3%）、土壤肥力改良（9.1%）、农具（7.1%）和药物（3.3%）。本地饲料和水果物种（42.7%）是通过野化（自然再生）繁殖的，其余则是通过育苗（7.2%）、播种（6.06%）和切茎（4.8%）繁殖的。过度放牧（46.5%）、过度开发（22%）、气候变化/干旱（20.5%）和病虫害（11%）是研究地区本地饲料和果树/灌木物种再生的主要制约因素。因此，必须通过适当的研究或开发工作来减少所研究物种的繁殖限制。Ziziphus spina-christi (L.) Desf.、Faidherbia albida (Delile) A. Chev.、Cordia africana Lam.、Ximenia americana L.和 Acacia senegal (L.) Willd.是研究地区农民最喜欢种植的树种。驯化的重点应放在首选的前五个物种上，以促进物种保护和可持续利用。
{"title":"Assessment of Use Values and Propagation Methods of Native Fodder and Fruit Species in Merhabete District, Ethiopia","authors":"Goremsu Getachew","doi":"10.26554/ijems.2023.7.4.137-146","DOIUrl":"https://doi.org/10.26554/ijems.2023.7.4.137-146","url":null,"abstract":"Native fodder and fruit species provide various products and services to local communities besides their fruit (food) and fodder supply in our country including in the study area. Although, there is rich traditional knowledge on propagation methods of native fodder and fruit species and their local use, but little recognition has been given by forestry research and extension efforts to enhance them. The general objective of the study was to investigate the use value and propagation methods of native fodder and fruit species in the Merhabete district, Ethiopia. A total of 127 households were randomly selected and interviewed about local use and propagation methods of native fodder and fruit species. The study indicated that the majority of native fodder and fruit species were used for firewood (23.9%) followed by charcoal (10.9%), timber, and construction wood (10.6%), fencing (9.3%), soil fertility improvement (9.1%), farm tool (7.1%), and medicine (3.3%). Native fodder and fruit species (42.7%) were propagated through wilding (natural regeneration) and the remainder were propagated through seedlings (7.2%), seed (6.06%), and stem cutting (4.8%). Overgrazing (46.5%) followed by overexploitation (22%), climate change/drought (20.5%), and disease and pest (11%) were the major regeneration constraints to native fodder and fruit trees/shrubs species in the study area. Therefore, proper involvement either through research or development works are essential to reduce the propagation constraint of studied species. Ziziphus spina-christi (L.) Desf. followed by Faidherbia albida (Delile) A. Chev., Cordia africana Lam., Ximenia americana L., and Acacia senegal (L.) Willd. were the most preferred species for planting by farmers in the study area. Domestication should focus on the preferred top five species to promote species conservation and sustainable use.","PeriodicalId":13453,"journal":{"name":"Indonesian Journal of Environmental Management and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139154210","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 : 2023-12-27DOI: 10.26554/ijems.2023.7.4.153-159
E. Hanaseta N., Laila Febrina
Harjamukti Village is located in Depok City which is a buffer zone for the capital city of DKI Jakarta, the rapidly growing housing sector shows that this location has an attractiveness. The next problem that arises is the potential for noise from vehicular traffic due to community mobility. Noise measurements carried out using SNI 8427: 2017 show the LSM value on each road: Tumaritis Road (68.87 dBA), Bungur Road (61.29 dBA), Putri Tunggal Road (73.67 dBA), Putri Tunggal District Road (65.7 dBA) and Sementara Road (61.29 dBA). This study was conducted to see the road class based on the noise and capacity parameters, so that from these two parameters, can we clearly show the road class being analyzed. The measurements were carried out for 24 hours using the standard SNI 8427: 2017. The quality standard for the residential area used was 55 Dba based on the Minister of Environment Decree No. 48 of 1996. The road capacity used is analyzed based on the number of vehicles and the class of each road. Based on the noise parameters (sig 0.006) and capacity (sig 0.000) so that from the noise parameter there is no significant difference in the 5 research locations, while the road capacity shows a significant difference from the 5 research locations. Prediction of road class cannot be determined from the noise value and road capacity, because the noise obtained needs to be analyzed for the types of activities around whether there is an influence from other activities that are also dominant, such as toll roads and road capacity, because there are local road classes whose capacity is not detected different from collector road class.
{"title":"The Measurement of the Noise Level Based on Roads Classifications in Urban Area (Case Study: Harjamukti, Depok)","authors":"E. Hanaseta N., Laila Febrina","doi":"10.26554/ijems.2023.7.4.153-159","DOIUrl":"https://doi.org/10.26554/ijems.2023.7.4.153-159","url":null,"abstract":"Harjamukti Village is located in Depok City which is a buffer zone for the capital city of DKI Jakarta, the rapidly growing housing sector shows that this location has an attractiveness. The next problem that arises is the potential for noise from vehicular traffic due to community mobility. Noise measurements carried out using SNI 8427: 2017 show the LSM value on each road: Tumaritis Road (68.87 dBA), Bungur Road (61.29 dBA), Putri Tunggal Road (73.67 dBA), Putri Tunggal District Road (65.7 dBA) and Sementara Road (61.29 dBA). This study was conducted to see the road class based on the noise and capacity parameters, so that from these two parameters, can we clearly show the road class being analyzed. The measurements were carried out for 24 hours using the standard SNI 8427: 2017. The quality standard for the residential area used was 55 Dba based on the Minister of Environment Decree No. 48 of 1996. The road capacity used is analyzed based on the number of vehicles and the class of each road. Based on the noise parameters (sig 0.006) and capacity (sig 0.000) so that from the noise parameter there is no significant difference in the 5 research locations, while the road capacity shows a significant difference from the 5 research locations. Prediction of road class cannot be determined from the noise value and road capacity, because the noise obtained needs to be analyzed for the types of activities around whether there is an influence from other activities that are also dominant, such as toll roads and road capacity, because there are local road classes whose capacity is not detected different from collector road class.","PeriodicalId":13453,"journal":{"name":"Indonesian Journal of Environmental Management and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139153311","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 : 2023-12-27DOI: 10.26554/ijems.2023.7.4.160-165
N. Palapa, Amri Amri, Yuliza Hanifah
This study used a novel method to transform rice husk waste into a highly effective and specific adsorbent for several dyes, including malachite green, direct yellow, congo red, and rodhamine B. The rice husk was analyzed and used for the purpose of eliminating these colors from water-based solutions. The adsorbent exhibited excellent heat stability, and the sample retained the functional groups of lignin. The parameters pertaining to kinetics were also examined. The adsorption exhibited a time-dependent rise and reached its peak after 100 minutes. In the kinetics tests, the most suitable model to characterize the behavior was found to be the pseudo-first order, with a regression value near to one. The rice husk shown significant potential and selectivity in the removal of malachite green and rodhamine B, particularly in the presence of direct yellow and congo red, from aqueous solutions.
{"title":"Potential Indonesian Rice Husk for Wastewater Treatment Agricultural Waste Preparation and Dye Removal Application","authors":"N. Palapa, Amri Amri, Yuliza Hanifah","doi":"10.26554/ijems.2023.7.4.160-165","DOIUrl":"https://doi.org/10.26554/ijems.2023.7.4.160-165","url":null,"abstract":"This study used a novel method to transform rice husk waste into a highly effective and specific adsorbent for several dyes, including malachite green, direct yellow, congo red, and rodhamine B. The rice husk was analyzed and used for the purpose of eliminating these colors from water-based solutions. The adsorbent exhibited excellent heat stability, and the sample retained the functional groups of lignin. The parameters pertaining to kinetics were also examined. The adsorption exhibited a time-dependent rise and reached its peak after 100 minutes. In the kinetics tests, the most suitable model to characterize the behavior was found to be the pseudo-first order, with a regression value near to one. The rice husk shown significant potential and selectivity in the removal of malachite green and rodhamine B, particularly in the presence of direct yellow and congo red, from aqueous solutions.","PeriodicalId":13453,"journal":{"name":"Indonesian Journal of Environmental Management and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139153856","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 : 2023-12-27DOI: 10.26554/ijems.2023.7.4.128-136
Truong Hoang Dan, Le Tran Thanh Liem, Nguyen Thi Bich Lua, Le Thi Diem Mi
The study was conducted to evaluate the management of domestic solid waste in Cai Rang district, Can Tho city. The study conducted sampling of domestic solid waste from 20 households in four wards Le Binh, Hung Phu, Ba Lang, and Tan Phu within 07 days from March 6 to 12, 2023. At the same time, three groups of subjects including 120 households, 3 Environmental Managers, and 3 employees of Urban Environment Joint Stock Company were interviewed to collect information. The result showed that the average domestic solid waste generation coefficient reached 0.28 kg/person/day, and the amount of domestic solid waste generated can reach about 11,027.3 tons by the end of 2023. Of which, up to 91% of the volume of domestic solid waste was recyclable, including 52% of biodegradable organic waste, and 39% of recyclable waste. As for domestic solid waste management, there was still a limitation in classifying waste at source, this rate only fluctuates between 43.4-86.7%. Besides, the rate of households registered for domestic solid waste collection service had a difference between urban and rural areas, fluctuating from 76.7-96.7%. After being collected, domestic solid waste was transported to the Can Tho household waste incineration plant (EB plant). Meanwhile, the remaining amount of domestic solid waste was treated using unsanitary landfill methods, and thrown into rivers, causing environmental pollution, and public health. Although propaganda activities related to domestic solid waste management were carried out in four wards in Cai Rang district, Can Tho city. However, the level of implementation of these activities was not regular. From that, the study identified a number of difficulties in domestic solid waste management, including solid waste that was not completely classified at source, and garbage collection services that were not organized throughout the area. The district lacked specialized waste collection vehicles after classification, and public propaganda, and education work were limited. This research will help local authorities come up with specific solutions to improve the quality of solid waste management in Cai Rang district, Can Tho city.
{"title":"Evaluation of Domestic Solid Waste Management in Cai Rang District, Can Tho City, Vietnam","authors":"Truong Hoang Dan, Le Tran Thanh Liem, Nguyen Thi Bich Lua, Le Thi Diem Mi","doi":"10.26554/ijems.2023.7.4.128-136","DOIUrl":"https://doi.org/10.26554/ijems.2023.7.4.128-136","url":null,"abstract":"The study was conducted to evaluate the management of domestic solid waste in Cai Rang district, Can Tho city. The study conducted sampling of domestic solid waste from 20 households in four wards Le Binh, Hung Phu, Ba Lang, and Tan Phu within 07 days from March 6 to 12, 2023. At the same time, three groups of subjects including 120 households, 3 Environmental Managers, and 3 employees of Urban Environment Joint Stock Company were interviewed to collect information. The result showed that the average domestic solid waste generation coefficient reached 0.28 kg/person/day, and the amount of domestic solid waste generated can reach about 11,027.3 tons by the end of 2023. Of which, up to 91% of the volume of domestic solid waste was recyclable, including 52% of biodegradable organic waste, and 39% of recyclable waste. As for domestic solid waste management, there was still a limitation in classifying waste at source, this rate only fluctuates between 43.4-86.7%. Besides, the rate of households registered for domestic solid waste collection service had a difference between urban and rural areas, fluctuating from 76.7-96.7%. After being collected, domestic solid waste was transported to the Can Tho household waste incineration plant (EB plant). Meanwhile, the remaining amount of domestic solid waste was treated using unsanitary landfill methods, and thrown into rivers, causing environmental pollution, and public health. Although propaganda activities related to domestic solid waste management were carried out in four wards in Cai Rang district, Can Tho city. However, the level of implementation of these activities was not regular. From that, the study identified a number of difficulties in domestic solid waste management, including solid waste that was not completely classified at source, and garbage collection services that were not organized throughout the area. The district lacked specialized waste collection vehicles after classification, and public propaganda, and education work were limited. This research will help local authorities come up with specific solutions to improve the quality of solid waste management in Cai Rang district, Can Tho city.","PeriodicalId":13453,"journal":{"name":"Indonesian Journal of Environmental Management and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139153641","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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