PT Motive Mulia (Merah Putih Beton) is a subsidiary of PT Cemindo Gemilang (Semen Merah Putih), a company engaged in construction materials. The purpose of this study was to analyze potential hazards, assess risks and carry out efforts to control and apply risks to the transmission of the covid-19 virus in the Batching Plant area of PT Motive Mulia Jatiasih using the Hazard Identification Risk Assessment (IBPR) method. The identification results contained 8 findings of potential dangers that could occur in the observed transmission of the Covid-19. Worker risk results based on the calculation of the severity index of probability and impact, employee activities in the office area have an extreme risk level, the probability value of SI is 70,53 with probability level 4 and SI impact is 78,03 with impact matrix level 4. Employee activities in the field area has an extreme risk level, the probability SI score is 78,12 with a probability level of 4 and the impact SI is 72,34 with an impact matrix level 4. Efforts made to control such as installing brochures on aspects for preventing the Covid-19 virus about avoiding Covid-19 with 5 M employees. Office and field areas have complied with wearing masks and maintaining distance. In some corners of the office, sanitizers have provided to each employees. The results of the analysis in the application of health protocols to PT Motive Mulia’s workers in an effort to prevent covid-19 in the Jatiasih Plant area, workers are 100% aware of complying with health protocols by applying masks in the office area, keeping a distance of 1 meter from colleagues, washing hands before and after touching faces or objects, maintain health and employees have vaccinated.
PT Motive Mulia (Merah Putih Beton)是PT Cemindo Gemilang (Semen Merah Putih)的子公司，PT Cemindo Gemilang是一家从事建筑材料的公司。本研究的目的是采用危害识别风险评估(IBPR)方法，分析新冠病毒在PT Motive Mulia Jatiasih配料厂区域传播的潜在危害，评估风险，并开展风险控制和应用工作。鉴定结果包含8项发现，这些发现可能在观察到的Covid-19传播中发生潜在危险。员工风险结果基于概率和影响严重性指数的计算，员工在办公区域的活动具有极端风险等级，SI的概率值为70、53，概率等级为4,SI影响为78,03，影响矩阵等级为4。现场区域员工活动具有极端风险等级，概率SI得分为78,12，概率等级为4，影响SI为72,34，影响矩阵等级为4。为500万名员工安装了预防新冠病毒的宣传册等防控措施。办公室和现场已遵守佩戴口罩和保持距离。在办公室的一些角落，为每位员工提供了消毒剂。为预防Jatiasih工厂区域的covid-19，对PT Motive Mulia工人实施健康协议的分析结果显示，工人100%意识到遵守健康协议，在办公区戴口罩，与同事保持1米的距离，在接触面部或物体前后洗手，保持健康，员工已接种疫苗。
{"title":"ANALISA RISIKO KESELAMATAN DAN KESEHATAN KERJA DALAM UPAYA PENCEGAHAN PENYEBARAN VIRUS COVID-19 METODE IDENTIFIKASI BAHAYA DAN PENILAIAN RESIKO (IBPR) DI AREA BATCHING PLANT PT MOTIVE MULIA","authors":"Tissa Mutia Angreni, Nur Hayati","doi":"10.59134/jtnk.v6i1.524","DOIUrl":"https://doi.org/10.59134/jtnk.v6i1.524","url":null,"abstract":"PT Motive Mulia (Merah Putih Beton) is a subsidiary of PT Cemindo Gemilang (Semen Merah Putih), a company engaged in construction materials. The purpose of this study was to analyze potential hazards, assess risks and carry out efforts to control and apply risks to the transmission of the covid-19 virus in the Batching Plant area of PT Motive Mulia Jatiasih using the Hazard Identification Risk Assessment (IBPR) method. The identification results contained 8 findings of potential dangers that could occur in the observed transmission of the Covid-19. Worker risk results based on the calculation of the severity index of probability and impact, employee activities in the office area have an extreme risk level, the probability value of SI is 70,53 with probability level 4 and SI impact is 78,03 with impact matrix level 4. Employee activities in the field area has an extreme risk level, the probability SI score is 78,12 with a probability level of 4 and the impact SI is 72,34 with an impact matrix level 4. Efforts made to control such as installing brochures on aspects for preventing the Covid-19 virus about avoiding Covid-19 with 5 M employees. Office and field areas have complied with wearing masks and maintaining distance. In some corners of the office, sanitizers have provided to each employees. The results of the analysis in the application of health protocols to PT Motive Mulia’s workers in an effort to prevent covid-19 in the Jatiasih Plant area, workers are 100% aware of complying with health protocols by applying masks in the office area, keeping a distance of 1 meter from colleagues, washing hands before and after touching faces or objects, maintain health and employees have vaccinated.","PeriodicalId":127483,"journal":{"name":"JURNAL TECHLINK","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135830084","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}
This study aims to examine the relationship between knowledge about environmental sanitation and the prevention behavior of dengue hemorrhagic fever (DHF) (a study on housewives in Penjaringan, North Jakarta). The research method used is a survey with a quantitative approach and an explanation format. Data analysis used t-test and simple linear regression. The research location is in Penjaringan Village, North Jakarta. This research was conducted from June to November 2019. The population of this study were all housewives in Penjaringan Village, North Jakarta. The total sample size was 92 housewives residing in RT 15 and RT 17 Kelurahan Penjaringan, North Jakarta. The sampling technique used in this study was simple random sampling. The results of the research on the regression equation for knowledge about environmental sanitation on the prevention of dengue fever are . = 43.16 + 1.38X. The result of the calculation of the value of r (only) is 0.271; r table value of 0.205; so that r count> r table. The t test is proven by t count> t table, namely 2.671> 1.986; It can be interpreted that there is a significant relationship between knowledge about environmental sanitation and the behavior of preventing dengue hemorrhagic fever. The results of the calculation of the coefficient of determination (Kd) (r) 2 = 0.074 (7.4%), meaning that the relationship between knowledge about environmental sanitation and the behavior of prevention of dengue hemorrhagic fever is 7.4%. The conclusion of this research shows that there is a positive and significant relationship between knowledge about environmental sanitation and the behavior of preventing dengue fever (DHF). Therefore the increasing knowledge about environmental sanitation, the more behavioral prevention of dengue hemorrhagic fever (DHF) will increase.
{"title":"HUBUNGAN PENGETAHUAN TENTANG SANITASI LINGKUNGAN DENGAN PERILAKU PENCEGAHAN PENYAKIT DEMAM BERDARAH DANGUE (DBD) (Studi Korelasi pada Ibu Rumah Tangga di Penjaringan, Jakarta Utara)","authors":"Adi Setyo Pranoto","doi":"10.59134/jtnk.v5i1.512","DOIUrl":"https://doi.org/10.59134/jtnk.v5i1.512","url":null,"abstract":"This study aims to examine the relationship between knowledge about environmental sanitation and the prevention behavior of dengue hemorrhagic fever (DHF) (a study on housewives in Penjaringan, North Jakarta). The research method used is a survey with a quantitative approach and an explanation format. Data analysis used t-test and simple linear regression. The research location is in Penjaringan Village, North Jakarta. This research was conducted from June to November 2019. The population of this study were all housewives in Penjaringan Village, North Jakarta. The total sample size was 92 housewives residing in RT 15 and RT 17 Kelurahan Penjaringan, North Jakarta. The sampling technique used in this study was simple random sampling. The results of the research on the regression equation for knowledge about environmental sanitation on the prevention of dengue fever are . = 43.16 + 1.38X. The result of the calculation of the value of r (only) is 0.271; r table value of 0.205; so that r count> r table. The t test is proven by t count> t table, namely 2.671> 1.986; It can be interpreted that there is a significant relationship between knowledge about environmental sanitation and the behavior of preventing dengue hemorrhagic fever. The results of the calculation of the coefficient of determination (Kd) (r) 2 = 0.074 (7.4%), meaning that the relationship between knowledge about environmental sanitation and the behavior of prevention of dengue hemorrhagic fever is 7.4%. The conclusion of this research shows that there is a positive and significant relationship between knowledge about environmental sanitation and the behavior of preventing dengue fever (DHF). Therefore the increasing knowledge about environmental sanitation, the more behavioral prevention of dengue hemorrhagic fever (DHF) will increase.","PeriodicalId":127483,"journal":{"name":"JURNAL TECHLINK","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135830390","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}
The increasing rate of urban population growth equates to the increasing pressure placed on theenvironment due to the need for natural resources and land availability. Limited residential land has ledto the construction of slum densely populated settlements and a lack of knowledge about environmentalsanitation which affects the physical condition and environmental health quality of the house. The purposeof this study was to determine the effect of knowledge about environmental sanitation on the health qualityof the home environment in Kebayoran Lama Utara Village. The research method used in this research isa survey method with a quantitative approach. The results showed that there was an effect of knowledgeabout environmental sanitation on the health quality of the home environment, with the results of thecorrelation analysis 0.997 with a determination coefficient of 99.4%, the regression line equation Ŷ = -0.248 + 1.958 X, the significance test of tcount> ttable = 98.493> 1.67 and significance testing of the valueof Fcount> Ftable = 9700.595> 4.00.
{"title":"PENGARUH PENGETAHUAN TENTANG SANITASI LINGKUNGAN TERHADAP KUALITAS KESEHATAN LINGKUNGAN RUMAH DI KEBAYORAN LAMA UTARA","authors":"Yuvita Cornelya Said, Nur Hayati, Deni Kurniawan","doi":"10.59134/jtnk.v4i2.508","DOIUrl":"https://doi.org/10.59134/jtnk.v4i2.508","url":null,"abstract":"The increasing rate of urban population growth equates to the increasing pressure placed on theenvironment due to the need for natural resources and land availability. Limited residential land has ledto the construction of slum densely populated settlements and a lack of knowledge about environmentalsanitation which affects the physical condition and environmental health quality of the house. The purposeof this study was to determine the effect of knowledge about environmental sanitation on the health qualityof the home environment in Kebayoran Lama Utara Village. The research method used in this research isa survey method with a quantitative approach. The results showed that there was an effect of knowledgeabout environmental sanitation on the health quality of the home environment, with the results of thecorrelation analysis 0.997 with a determination coefficient of 99.4%, the regression line equation Ŷ = -0.248 + 1.958 X, the significance test of tcount> ttable = 98.493> 1.67 and significance testing of the valueof Fcount> Ftable = 9700.595> 4.00.","PeriodicalId":127483,"journal":{"name":"JURNAL TECHLINK","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135833361","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}
This study aims to analyze the relationship between knowledge about occupational health safety (OHS) and the behavior of users of personal protective equipment (PPE) with the radiation dose of workers. The research method used is quantitative. The population of this research is all radiation workers, totaling 12 workers at PT Incoray Nitrama. The sampling technique is a saturated sample, that is, all members of the population are used as samples. The research sample consisted of 12 radiation workers. Data analysis used simultaneous correlation regression, t test, and coefficient of determination. The results showed that, there was a negative and significant relationship between knowledge of OHS and behavior of PPE users together on radiation worker doses, because it was in the range of Fcount 6.043 > Ftable 4.26 at = 0.05. That is, the higher the knowledge of K3 and the behavior of PPE users, the lower the dose of radiation workers will be exposed to. The conclusion of the study, if exposure to radiation dose of workers is low, then factors such as knowledge of OHS and behavior of PPE users are increased. The coefficient of determination of OHS knowledge and behavior of PPE users together on radiation worker dose (R Square) is 0.573. This shows that 57.3% of the variance in radiation worker doses can be explained by knowledge of OHS and behavior of PPE users together, the remaining 42.7% is influenced by other factors outside the variables studied.
{"title":"ANALISIS HUBUNGAN ANTARA PENGETAHUAN TENTANG KESELAMATAN KESEHATAN KERJA (K3) DAN PERILAKU PENGGUNA ALAT PELINDUNG DIRI (APD) DENGAN DOSIS RADIASI PEKERJA","authors":"Riyanto -, Charles Situmorang, Deni Kurniawan","doi":"10.59134/jtnk.v6i1.528","DOIUrl":"https://doi.org/10.59134/jtnk.v6i1.528","url":null,"abstract":"This study aims to analyze the relationship between knowledge about occupational health safety (OHS) and the behavior of users of personal protective equipment (PPE) with the radiation dose of workers. The research method used is quantitative. The population of this research is all radiation workers, totaling 12 workers at PT Incoray Nitrama. The sampling technique is a saturated sample, that is, all members of the population are used as samples. The research sample consisted of 12 radiation workers. Data analysis used simultaneous correlation regression, t test, and coefficient of determination. The results showed that, there was a negative and significant relationship between knowledge of OHS and behavior of PPE users together on radiation worker doses, because it was in the range of Fcount 6.043 > Ftable 4.26 at = 0.05. That is, the higher the knowledge of K3 and the behavior of PPE users, the lower the dose of radiation workers will be exposed to. The conclusion of the study, if exposure to radiation dose of workers is low, then factors such as knowledge of OHS and behavior of PPE users are increased. The coefficient of determination of OHS knowledge and behavior of PPE users together on radiation worker dose (R Square) is 0.573. This shows that 57.3% of the variance in radiation worker doses can be explained by knowledge of OHS and behavior of PPE users together, the remaining 42.7% is influenced by other factors outside the variables studied.","PeriodicalId":127483,"journal":{"name":"JURNAL TECHLINK","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135893522","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}
One way to process oil and fat wastes is by the physical method of oil grease trap. In principle the oil grease trap method can separate oils and fats using slow speeds. The slow pace would allow time for oil and fat to separate from the water by gravitational force of the oil and fats that had been separated would be contained in container of disposal. The aim of the study is to know the effectiveness of domestic wastewater treatment and how to analyze by means of gravimetric method (SNI 06-6989 10-2011) and to achieve an alternative method of oil and fatty waste treatment. The method used in laboratory studies for testing levels of oil and fats,vcod and TSS that would be compared to p.68/ menlhk/setjen/1/8/2016 on the domestic waste water quality obtained on this study is that oil and fat achieve levels before and after processing as much 18.5 mg/l and 10.1 mg/l with a 45.40% drop. On BOD came levels before and after Processing of 143.88 mg/l and 109.2 mg/l with a 24.10% drop. On COD came levels before and after Processing of 342,32 mg/l and 280,7 mg/l with a 18% drop. On TSS came levels before and after Processing of 188,6 mg/l and 136,32 mg/l with a 27,72% drop. Such results are not yet met by quality standards, so chemical processing of coagulating with poly aluminum chloride and rapid evaporation and flotation with flotation addition is required So that oil and fat, BOD, COD can be reduced.
{"title":"PENGOLAHAN LIMBAH MINYAK DAN LEMAK DI RESTORAN PADANG DENGAN METODE FISIK (OIL GREASE TRAP)","authors":"Ilham Akbar, Ai Silmi","doi":"10.59134/jtnk.v5i2.518","DOIUrl":"https://doi.org/10.59134/jtnk.v5i2.518","url":null,"abstract":"One way to process oil and fat wastes is by the physical method of oil grease trap. In principle the oil grease trap method can separate oils and fats using slow speeds. The slow pace would allow time for oil and fat to separate from the water by gravitational force of the oil and fats that had been separated would be contained in container of disposal. The aim of the study is to know the effectiveness of domestic wastewater treatment and how to analyze by means of gravimetric method (SNI 06-6989 10-2011) and to achieve an alternative method of oil and fatty waste treatment. The method used in laboratory studies for testing levels of oil and fats,vcod and TSS that would be compared to p.68/ menlhk/setjen/1/8/2016 on the domestic waste water quality obtained on this study is that oil and fat achieve levels before and after processing as much 18.5 mg/l and 10.1 mg/l with a 45.40% drop. On BOD came levels before and after Processing of 143.88 mg/l and 109.2 mg/l with a 24.10% drop. On COD came levels before and after Processing of 342,32 mg/l and 280,7 mg/l with a 18% drop. On TSS came levels before and after Processing of 188,6 mg/l and 136,32 mg/l with a 27,72% drop. Such results are not yet met by quality standards, so chemical processing of coagulating with poly aluminum chloride and rapid evaporation and flotation with flotation addition is required So that oil and fat, BOD, COD can be reduced.","PeriodicalId":127483,"journal":{"name":"JURNAL TECHLINK","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135831370","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}
Along with the development of technology for utilizing peanut shells, which are usually only used as waste, it can also be used as activated charcoal which is widely used as an adsorbent for gas purification, metal absorbent, oil purification and water purification. Peanut shells (Arachis hypogea L) can also be used as activated charcoal by first removing the water content, ash content and iodine content, then activation using an activator. In this study, the activator used was a solution of NaOH and H2SO4. The purpose of the study was to determine whether peanut shells could be used as activated charcoal as an adsorbent of ion (Fe) levels in domestic waste. From the research that was conducted, peanut shells were used as raw material for making activated charcoal in determining the water content in heating 700 0C, the results were 11.62% and the heating ash content at 700 0C was 6.54%, then charcoal that had been heated heated and soaked using a solution of NaOH and H2SO4, with variations in the concentration of each 10% 20% and 30% solution then the best results obtained from activated charcoal in the H2SO4 activator with a concentration of 30% with the results of an ash content of 2.13% water content of 0.18% and an iodine content of 1055.30 (mg/g), the best activated charcoal in a 30% H2SO4 solution was then tested for ion (Fe) levels in domestic waste by triple testing and from the results in front the average was 91 .11%.
{"title":"PEMANFAATAN ARANG AKTIF DARI KULIT KACANG (Arachis hypogea L) DENGAN AKTIVATOR NaOH DAN H2SO4 UNTUK ADSORBEN ION BESI","authors":"Taupan Riski Baruna Aji","doi":"10.59134/jtnk.v6i1.525","DOIUrl":"https://doi.org/10.59134/jtnk.v6i1.525","url":null,"abstract":"Along with the development of technology for utilizing peanut shells, which are usually only used as waste, it can also be used as activated charcoal which is widely used as an adsorbent for gas purification, metal absorbent, oil purification and water purification. Peanut shells (Arachis hypogea L) can also be used as activated charcoal by first removing the water content, ash content and iodine content, then activation using an activator. In this study, the activator used was a solution of NaOH and H2SO4. The purpose of the study was to determine whether peanut shells could be used as activated charcoal as an adsorbent of ion (Fe) levels in domestic waste. From the research that was conducted, peanut shells were used as raw material for making activated charcoal in determining the water content in heating 700 0C, the results were 11.62% and the heating ash content at 700 0C was 6.54%, then charcoal that had been heated heated and soaked using a solution of NaOH and H2SO4, with variations in the concentration of each 10% 20% and 30% solution then the best results obtained from activated charcoal in the H2SO4 activator with a concentration of 30% with the results of an ash content of 2.13% water content of 0.18% and an iodine content of 1055.30 (mg/g), the best activated charcoal in a 30% H2SO4 solution was then tested for ion (Fe) levels in domestic waste by triple testing and from the results in front the average was 91 .11%.","PeriodicalId":127483,"journal":{"name":"JURNAL TECHLINK","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135893286","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}
This study aimed to analyze the LC50 value of metallic lead (Pb), chromium (Cr), and cobalt (Co)contained in the printing industry wastewater to Daphnia magna and analyze the relationship of these metals to the LC50 value. The measurement results konsnetrasi Pb and Cr do not exceed the quality standards established, but the metals Co exceeds quality standards. Toxicity of Pb, Cr, and Co were tested in static test using artificial solution of Pb, Cr, and Co in accordance with the concentration measured in the wastewater. Tests carried out consisted of two stages: a preliminary test and test base. Daphnia magna mortality data were analyzed using Probit method with the EPA program Probit Analysis Program Version 1.5. 24-hour LC50 value of Pb, Cr, and Co to Daphnia magna is 1.052% and the LC50 values of Pb, Cr, and Co are respectively 0.003 mg / l, 0.008 mg / l and 0.009 mg / l. All three metals have included the category of very toxic to Dahnia magna.
本研究旨在分析印刷工业废水中金属铅(Pb)、铬(Cr)、钴(Co)对大水蚤的LC50值，并分析这些金属与LC50值的关系。测量结果显示，铅和铬不超过规定的质量标准，但金属Co超过质量标准。根据废水中测得的铅、铬、钴的浓度，采用人工配制的铅、铬、钴溶液进行静态毒性试验。进行的试验包括两个阶段:初步试验和试验基地。大水蚤死亡率数据采用Probit方法和EPA程序Probit Analysis program Version 1.5进行分析。Pb、Cr、Co对大水蚤的24小时LC50值为1.052%，Pb、Cr、Co的LC50值分别为0.003 mg / l、0.008 mg / l和0.009 mg / l，均属于大水蚤剧毒的范畴。
{"title":"PENGUJIAN TOKSISITAS AKUT LOGAM TIMBAL (Pb), KROM (Cr) DAN KOBALT (Co) TERHADAP Daphnia magna","authors":"AI Silmi","doi":"10.59134/jtnk.v2i2.492","DOIUrl":"https://doi.org/10.59134/jtnk.v2i2.492","url":null,"abstract":"This study aimed to analyze the LC50 value of metallic lead (Pb), chromium (Cr), and cobalt (Co)contained in the printing industry wastewater to Daphnia magna and analyze the relationship of these metals to the LC50 value. The measurement results konsnetrasi Pb and Cr do not exceed the quality standards established, but the metals Co exceeds quality standards. Toxicity of Pb, Cr, and Co were tested in static test using artificial solution of Pb, Cr, and Co in accordance with the concentration measured in the wastewater. Tests carried out consisted of two stages: a preliminary test and test base. Daphnia magna mortality data were analyzed using Probit method with the EPA program Probit Analysis Program Version 1.5. 24-hour LC50 value of Pb, Cr, and Co to Daphnia magna is 1.052% and the LC50 values of Pb, Cr, and Co are respectively 0.003 mg / l, 0.008 mg / l and 0.009 mg / l. All three metals have included the category of very toxic to Dahnia magna.","PeriodicalId":127483,"journal":{"name":"JURNAL TECHLINK","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135790158","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}
Industrial activities are one source of waste whose activities produce residues, both in the form of liquid and solid waste, one of the efforts to reduce waste is to reuse waste generated from the production process, one of which is eggshell waste. In this study the authors used egg shells that were used as activated carbon and were applied to wastewater samples with parameters for testing pH, COD and BOD. Activated carbon is made from 3 variations of temperature namely 400 oC, 500 oC and 600 oC. Furthermore, activated carbon was applied to the wastewater sample. From the test results obtained the most optimum combustion temperature is at a temperature of 600 oC. The pH at the combustion temperature of 600 oC increased from 4,627 (acid) to 7,313 (neutral) and decreased the BOD level down from 454,333 mg / L to 173,667 mg / L, and the COD content decreased from 1517,667 to 598,667.
{"title":"EFEKTIVITAS CANGKANG TELUR AYAM RAS (Gallus gallus domesticus) SEBAGAI KARBON AKTIF DENGAN AKTIVATOR NaOH","authors":"Teguh Nurandi","doi":"10.59134/jtnk.v5i1.516","DOIUrl":"https://doi.org/10.59134/jtnk.v5i1.516","url":null,"abstract":"Industrial activities are one source of waste whose activities produce residues, both in the form of liquid and solid waste, one of the efforts to reduce waste is to reuse waste generated from the production process, one of which is eggshell waste. In this study the authors used egg shells that were used as activated carbon and were applied to wastewater samples with parameters for testing pH, COD and BOD. Activated carbon is made from 3 variations of temperature namely 400 oC, 500 oC and 600 oC. Furthermore, activated carbon was applied to the wastewater sample. From the test results obtained the most optimum combustion temperature is at a temperature of 600 oC. The pH at the combustion temperature of 600 oC increased from 4,627 (acid) to 7,313 (neutral) and decreased the BOD level down from 454,333 mg / L to 173,667 mg / L, and the COD content decreased from 1517,667 to 598,667.","PeriodicalId":127483,"journal":{"name":"JURNAL TECHLINK","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135830388","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}
This study was intended to determine the significance of changes in the concentration of SO2, NO2, and PM10 (particles <10 m) parameters in the free air on Car Free Day before the Pandemic Period and during the Pandemic Period, because the ambient air sampling point was carried out on Car Free Day during the time of the pandemic. This pandemic period is still the same as the period before the 2019 pandemic, namely in the Central Jakarta area around the highway health road area. The methodology used is to carry out direct measurements using an impinger tool to measure SO2 and NO2, and an HVAS tool to measure PM10 (particles <10 m). The time of the study was carried out in April - June 2021, where for data sampling, sampling would be carried out 2 times in one month between the second and third week of each month. The results of the study indicate that Car Free Day during the Pandemic period affects the decrease in pollutant concentration values for SO., NO., and PM10 parameters, where for the PM10 parameter it drops statistically significantly, and for SO., and NO. parameters it does not cause a statistically significant decrease. , where the data analysis was carried out by using the Paired T test with free samples at a significance of = 5%.
{"title":"PERBEDAAN NILAI KONSENTRASI PARAMETER SO2, NO2 DAN PARTIKULAT PM10 (PARTIKEL <10 ìm) DI UDARA BEBAS PADA AKTIFITAS CAR FREE DAY SEBELUM MASA PANDEMI DAN PADA SAAT MASA PANDEMI DI DAERAH JAKARTA PUSAT","authors":"Muhammad Zulmi","doi":"10.59134/jtnk.v6i1.526","DOIUrl":"https://doi.org/10.59134/jtnk.v6i1.526","url":null,"abstract":"This study was intended to determine the significance of changes in the concentration of SO2, NO2, and PM10 (particles <10 m) parameters in the free air on Car Free Day before the Pandemic Period and during the Pandemic Period, because the ambient air sampling point was carried out on Car Free Day during the time of the pandemic. This pandemic period is still the same as the period before the 2019 pandemic, namely in the Central Jakarta area around the highway health road area. The methodology used is to carry out direct measurements using an impinger tool to measure SO2 and NO2, and an HVAS tool to measure PM10 (particles <10 m). The time of the study was carried out in April - June 2021, where for data sampling, sampling would be carried out 2 times in one month between the second and third week of each month. The results of the study indicate that Car Free Day during the Pandemic period affects the decrease in pollutant concentration values for SO., NO., and PM10 parameters, where for the PM10 parameter it drops statistically significantly, and for SO., and NO. parameters it does not cause a statistically significant decrease. , where the data analysis was carried out by using the Paired T test with free samples at a significance of = 5%.","PeriodicalId":127483,"journal":{"name":"JURNAL TECHLINK","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135830499","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}
This study aims to determine the relationship between knowledge of personal protective equipment and employee compliance in the use of personal protective equipment. The method used is descriptive quantitative. Analysis of the data used is correlation regression. Respondents in this study were workers at Pest Control in Tangerang. The results show that there is a significant relationship between knowledge of personal protective equipment and employee compliance in using personal protective equipment
{"title":"HUBUNGAN FAKTOR PENGETAHUAN TENTANG ALAT PELINDUNG DIRI (APD) DENGAN PERILAKU KEPATUHAN PENGGUNA ALAT PELINDUNG DIRI (APD) PEKERJA PEST KONTROL DI KABUPATEN TANGERANG","authors":"Rita Haerani, Deni Kurniawan","doi":"10.59134/jtnk.v5i2.523","DOIUrl":"https://doi.org/10.59134/jtnk.v5i2.523","url":null,"abstract":"This study aims to determine the relationship between knowledge of personal protective equipment and employee compliance in the use of personal protective equipment. The method used is descriptive quantitative. Analysis of the data used is correlation regression. Respondents in this study were workers at Pest Control in Tangerang. The results show that there is a significant relationship between knowledge of personal protective equipment and employee compliance in using personal protective equipment","PeriodicalId":127483,"journal":{"name":"JURNAL TECHLINK","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135831104","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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