Literature studies show that the nutrient content in tofu pulp is still high; however the utilization of this waste is still relatively low by the community. Nowadays, tofu dregs is still widely used as an ingredient for animal feed. Some of the reasons why people don't take advantage of tofu waste are consits of the funding, equipment, time and worries related to starting their own business. The aims of this study is to make a pre-designed tofu dregs processing plant into a multipurpose product aggregate such as sausages driven by the tofu business community. The method stage in this research is making a feasible product and process scheme, analyzing tofu solid waste in the form of a paper project and making a household scale sausage production prototype. The results of this study are able to produce a role model for tofu dregs utilization which is more conomically valuable but still meet the standard and quality of reasonableness. The results of the role model will be disseminated by reaching out to tofu entrepreneur communities to collaborate with each other so that the utilization of tofu with high economic value can be carried out more massively, structurally and systematically.
{"title":"Analisis Pengolahan Limbah Padat Tahu Terhadap Alternatif Industri Pangan Sosis (Grade B)","authors":"Ibnu Sina, Untung Nugroho Harwanto, Z. Mubarok","doi":"10.32493/JITK.V5I1.9193","DOIUrl":"https://doi.org/10.32493/JITK.V5I1.9193","url":null,"abstract":"Literature studies show that the nutrient content in tofu pulp is still high; however the utilization of this waste is still relatively low by the community. Nowadays, tofu dregs is still widely used as an ingredient for animal feed. Some of the reasons why people don't take advantage of tofu waste are consits of the funding, equipment, time and worries related to starting their own business. The aims of this study is to make a pre-designed tofu dregs processing plant into a multipurpose product aggregate such as sausages driven by the tofu business community. The method stage in this research is making a feasible product and process scheme, analyzing tofu solid waste in the form of a paper project and making a household scale sausage production prototype. The results of this study are able to produce a role model for tofu dregs utilization which is more conomically valuable but still meet the standard and quality of reasonableness. The results of the role model will be disseminated by reaching out to tofu entrepreneur communities to collaborate with each other so that the utilization of tofu with high economic value can be carried out more massively, structurally and systematically.","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74825555","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}
Adsorption is a dye absorption process using various adsorbents. Dye waste produced by industry can pollute the environment because it is dangerous and poisonous. In this study, calcium-deficient hydroxyapatite with a Ca / P ratio of more / less than 1.67 was used as the adsorption medium. Utilization of the adsorption process in dye absorption is useful for determining isotherm models and adsorption kinetics. The dye used is direct brown. The dye adsorption process was carried out at variations in pH (6, 7, 8) and adsorbent mass (0.1; 0.15; 0.2 wt%) at a rotating speed of 250 rpm and 30 ppm of dye concentration. The maximum adsorption capacity occurs at pH 6 with an absorption efficiency of 51.4%. The equilibrium model tested is the Langmuir, Freundlich, Harkins Jura, Temkin equilibrium model. and Dubinin-Raduskevich. The isotherm model of the direct brown dye adsorption process follows the Temkin model with a R2 value of 0.9996. The adsorption kinetics tested were Pseudo First Order, Pseudo Second Order, Elovich and Intraparticle Diffusion. The kinetics of the direct brown dye adsorption process followed the intraparticle diffusion order kinetics model with R2 value of 0.9938 in the adsorption process with a pH of 6 and an adsorbent mass of 0.5 grams.
{"title":"Kinetika Adsorpsi Zat Warna Direct Brown Menggunakan Hidroksiapatit Dengan Variasi Dosis Adsorben dan pH Larutan","authors":"U. Rahayu","doi":"10.32493/JITK.V5I1.7390","DOIUrl":"https://doi.org/10.32493/JITK.V5I1.7390","url":null,"abstract":"Adsorption is a dye absorption process using various adsorbents. Dye waste produced by industry can pollute the environment because it is dangerous and poisonous. In this study, calcium-deficient hydroxyapatite with a Ca / P ratio of more / less than 1.67 was used as the adsorption medium. Utilization of the adsorption process in dye absorption is useful for determining isotherm models and adsorption kinetics. The dye used is direct brown. The dye adsorption process was carried out at variations in pH (6, 7, 8) and adsorbent mass (0.1; 0.15; 0.2 wt%) at a rotating speed of 250 rpm and 30 ppm of dye concentration. The maximum adsorption capacity occurs at pH 6 with an absorption efficiency of 51.4%. The equilibrium model tested is the Langmuir, Freundlich, Harkins Jura, Temkin equilibrium model. and Dubinin-Raduskevich. The isotherm model of the direct brown dye adsorption process follows the Temkin model with a R2 value of 0.9996. The adsorption kinetics tested were Pseudo First Order, Pseudo Second Order, Elovich and Intraparticle Diffusion. The kinetics of the direct brown dye adsorption process followed the intraparticle diffusion order kinetics model with R2 value of 0.9938 in the adsorption process with a pH of 6 and an adsorbent mass of 0.5 grams.","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78051175","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}
Organic waste that is not utilized will cause stinky odor. The Organic waste, especially liquid one, has high COD. This kind Wastes with high COD are usually left not easily decomposed and those that live in the environment are anaerobic microbes which normally produce gas in metabolism. The gas usually consists of H2S and NH3 which give off an unpleasant odor. Handling of this organic waste by using a microbial source from cow dung can direct the waste conversion process to produce the main product in the form of methane (CH4). Preliminary study of liquid waste management from palm oil mill effluent (POME) in its handling. The initial conditioning was carried out by incubating cow manure and adding POME gradually by maintaining the pH of the media around 6.5. Uncontrolled treatment with a pH that did not change much from the initial pH of POME, which was between 4 - 5.5. The resulting biogas pH can reach 5.5 - 6.5 with CH4 when it is around 50%. Meanwhile, pH 6.5 - 7.5 gave the best biogas yield, namely 60%, even in the best conditions the CH4 concentration could reach 62.34% at pH 7.6.
{"title":"Preliminary Study on pH Optimization of Biogas Production Using POME, Palm Oil Mill Effluent","authors":"J. Prasetyo","doi":"10.32493/JITK.V5I1.7453","DOIUrl":"https://doi.org/10.32493/JITK.V5I1.7453","url":null,"abstract":"Organic waste that is not utilized will cause stinky odor. The Organic waste, especially liquid one, has high COD. This kind Wastes with high COD are usually left not easily decomposed and those that live in the environment are anaerobic microbes which normally produce gas in metabolism. The gas usually consists of H2S and NH3 which give off an unpleasant odor. Handling of this organic waste by using a microbial source from cow dung can direct the waste conversion process to produce the main product in the form of methane (CH4). Preliminary study of liquid waste management from palm oil mill effluent (POME) in its handling. The initial conditioning was carried out by incubating cow manure and adding POME gradually by maintaining the pH of the media around 6.5. Uncontrolled treatment with a pH that did not change much from the initial pH of POME, which was between 4 - 5.5. The resulting biogas pH can reach 5.5 - 6.5 with CH4 when it is around 50%. Meanwhile, pH 6.5 - 7.5 gave the best biogas yield, namely 60%, even in the best conditions the CH4 concentration could reach 62.34% at pH 7.6.","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88114959","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 research was conducted to make transparent soap appropriate to the Indonesian national standard (SNI 3235-2016). Transparent soap is made using raw materials of virgin coconut oil (VCO) and palm oil with NaOH, stearic acid. Addition of dyes and fragrances to increase the aesthetic value of the soap appearance. The addition of alcohol, sugar, and glycerin is used to bring out a clear and translucent color. The method of making transparent soap is a saponification method with a temperature used of 600C - 700C. The tests carried out include oil testing and transparent soap testing. Oil testing, among others: free fatty acids and density. Meanwhile, transparent soap testing, among others: pH, free fatty acids or free alkalis, moisture content, organoleptic, and preference test. Based on the results of tests that have been carried out by soap, it is known that the best formula for making transparent soap with palm oil is in the 1C20 formula where 150 mL of palm oil are used, 20 grams of sugar are dissolved in 10 mL of aquadest. Meanwhile, the best formula for making transparent soap from virgin coconut oil (VCO) is the 1Y20 formula where 100 mL of virgin coconut oil (VCO) are used, and 20 grams of sugar are dissolved in 10 mL of aquadest. Soaps that meet the standards of SNI 3532-2016 and SNI 06 - 3532 1994 are 1Y10,1Y20,1Y30 and 1Z10 soap.
{"title":"Pembuatan dan Uji Kualitas Sabun Transparan dengan Variasi Minyak Kelapa Murni atau Virgin Coconut Oil (VCO) Dan Minyak Kelapa Sawit","authors":"A. S. Afrozi","doi":"10.32493/JITK.V5I1.7082","DOIUrl":"https://doi.org/10.32493/JITK.V5I1.7082","url":null,"abstract":"This research was conducted to make transparent soap appropriate to the Indonesian national standard (SNI 3235-2016). Transparent soap is made using raw materials of virgin coconut oil (VCO) and palm oil with NaOH, stearic acid. Addition of dyes and fragrances to increase the aesthetic value of the soap appearance. The addition of alcohol, sugar, and glycerin is used to bring out a clear and translucent color. The method of making transparent soap is a saponification method with a temperature used of 600C - 700C. The tests carried out include oil testing and transparent soap testing. Oil testing, among others: free fatty acids and density. Meanwhile, transparent soap testing, among others: pH, free fatty acids or free alkalis, moisture content, organoleptic, and preference test. Based on the results of tests that have been carried out by soap, it is known that the best formula for making transparent soap with palm oil is in the 1C20 formula where 150 mL of palm oil are used, 20 grams of sugar are dissolved in 10 mL of aquadest. Meanwhile, the best formula for making transparent soap from virgin coconut oil (VCO) is the 1Y20 formula where 100 mL of virgin coconut oil (VCO) are used, and 20 grams of sugar are dissolved in 10 mL of aquadest. Soaps that meet the standards of SNI 3532-2016 and SNI 06 - 3532 1994 are 1Y10,1Y20,1Y30 and 1Z10 soap.","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78458630","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}
In making tofu today, consuming energy for the tofu making process requires a large amount of energy. So that research must be able to choose the minimum energy use in the process of making tofu. Tofu has a short shelf life and quickly becomes rotten. The purpose of this study was to determine the best tofu making in terms of the use of variations in soaking time, boiling temperature and stirring time, knowing the best quality of tofu in terms of moisture content, protein content and texture of tofu products, knowing the value of tofu content from using variations in soaking time boiling temperature and stirring time. The quantitative method is taken from the analysis of water content, protein content, and tofu texture. The following is how to make tofu as follows, 1 kg of soybeans, washed sufficiently then soaked first, the soybeans are then milled with a special machine with 7 liters of raw water, heated, then stirred slowly, then take the clotted tofu with a scoop then put it in the mold and pressed or pressed, let stand until slightlycool, the last tofu is ready to be consumed. The result of modification test in making tofu that has the best value from the use of soaking time, grinding time, and temperature variation is sample 2 with a soaking time of 3 hours, 10 minutes of grinding time and a temperature variation of 80°C with a moisture content value of 82.17%, protein 11.61% and texture values of 6,44 N and 5,45 N.
{"title":"Modifikasi Pembuatan Tahu Dengan Penggunaan Lama Perendaman, Lama Penggilingan dan Penggunaan Suhu dalam Upaya Meningkatkan Kualitas Produk Tahu","authors":"Didik Iswadi","doi":"10.32493/JITK.V5I1.7008","DOIUrl":"https://doi.org/10.32493/JITK.V5I1.7008","url":null,"abstract":"In making tofu today, consuming energy for the tofu making process requires a large amount of energy. So that research must be able to choose the minimum energy use in the process of making tofu. Tofu has a short shelf life and quickly becomes rotten. The purpose of this study was to determine the best tofu making in terms of the use of variations in soaking time, boiling temperature and stirring time, knowing the best quality of tofu in terms of moisture content, protein content and texture of tofu products, knowing the value of tofu content from using variations in soaking time boiling temperature and stirring time. The quantitative method is taken from the analysis of water content, protein content, and tofu texture. The following is how to make tofu as follows, 1 kg of soybeans, washed sufficiently then soaked first, the soybeans are then milled with a special machine with 7 liters of raw water, heated, then stirred slowly, then take the clotted tofu with a scoop then put it in the mold and pressed or pressed, let stand until slightlycool, the last tofu is ready to be consumed. The result of modification test in making tofu that has the best value from the use of soaking time, grinding time, and temperature variation is sample 2 with a soaking time of 3 hours, 10 minutes of grinding time and a temperature variation of 80°C with a moisture content value of 82.17%, protein 11.61% and texture values of 6,44 N and 5,45 N.","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84117802","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}
Synthesis of Shielding Radiation Neutron Materials Made from Wood Powder with Variation of Borax Content has been carried out as a shield of neutron radiation. The material used as a neutron shield is wood powder added 10%, 20%, 30% and 50% borax with variations in the thickness of each 5 mm, 10 mm, 15 mm, which previously saw wood powder milled with HEM (High Energy Milling ) for 1 hour and mixed with borax using HEM (High Energy Milling) for 1 hour and compacted using a diameter of 25.4 mm with a pressure of 2000 Psi. The results of observations with optical microscopes show that the spread of borax which is less evenly distributed may be due to the type of borax that is used in wood blends that have properties that quickly clot and cannot be evenly mixed with wood. The results of the compressive test using a Universal Tensile Machine tool produced strong for 224 N wood and in the mixture of 50% borax wood which was closest to the strength of wood which was equal to 172 N
研究了以不同硼砂含量的木粉为原料合成屏蔽辐射的中子材料。用作中子屏蔽的材料是添加了10%、20%、30%和50%硼砂的木粉，厚度分别为5毫米、10毫米、15毫米，之前用HEM(高能铣削)铣削木粉1小时，用HEM(高能铣削)与硼砂混合1小时，用直径25.4毫米的压实，压力为2000 Psi。光学显微镜的观察结果表明，硼砂分布不均匀可能是由于木材混合物中使用的硼砂类型具有快速凝结的特性，不能与木材均匀混合。使用万能拉伸机床进行压缩试验的结果显示，224 N木材和50%硼砂木材的混合物的强度最接近木材的强度，等于172 N
{"title":"Synthesis of Shielding Radiation Neutron Materials Made from Wood Powder With Variation of Borax Content","authors":"R. Salam, A. Afrozi","doi":"10.32493/jitk.v5i1.6485","DOIUrl":"https://doi.org/10.32493/jitk.v5i1.6485","url":null,"abstract":"Synthesis of Shielding Radiation Neutron Materials Made from Wood Powder with Variation of Borax Content has been carried out as a shield of neutron radiation. The material used as a neutron shield is wood powder added 10%, 20%, 30% and 50% borax with variations in the thickness of each 5 mm, 10 mm, 15 mm, which previously saw wood powder milled with HEM (High Energy Milling ) for 1 hour and mixed with borax using HEM (High Energy Milling) for 1 hour and compacted using a diameter of 25.4 mm with a pressure of 2000 Psi. The results of observations with optical microscopes show that the spread of borax which is less evenly distributed may be due to the type of borax that is used in wood blends that have properties that quickly clot and cannot be evenly mixed with wood. The results of the compressive test using a Universal Tensile Machine tool produced strong for 224 N wood and in the mixture of 50% borax wood which was closest to the strength of wood which was equal to 172 N","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84694832","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}
Cassava (Manihot utillisima) is a staple food for Indonesians after rice and corn. Cassava is a natural product (product) which is abundant in Indonesia, especially in the areas of Central Tawa and West Java. Activated carbon is a porous material derived from carbon material by combustion or thermal decomposition. Activated carbon is widely used for water purification, medicine, waste treatment and as a filter in compressed air (Lam et al., 2017). The purpose of this research is the quality of activated charcoal from cassava peel absorption capacity of activated carbon from cassava peels as a water filter, especially for removal of Cu (II) metal with a variety of activators and the optimum duration of contact with the use of activated carbon in a simple home scale water filter. The results showed that the quality of activated charcoal from coffee grounds which includes the quality of yield, moisture content, ash content and absorption of iodine has met SNI No.06-3730- 1995 Activated Charcoal Quality Standards. The higher the concentration, the greater the absorption of activated charcoal on Cu (II) metal, and from the variation data the most optimal activator is activated charcoal with a KOH activator of 0.3 m. The results of boxing the activated charcoal within 5 hours with an average yield of 0.1898 mg per liter meet the clean water standards, namely according to the 2008 East Java Regional Regulation which states that the Cu content in water is at a threshold of 0.2 mg per liter.
木薯(Manihot utillisima)是印尼人的主食，仅次于大米和玉米。木薯是一种天然产品，在印度尼西亚非常丰富，特别是在中塔瓦和西爪哇地区。活性炭是由碳材料经燃烧或热分解而成的多孔材料。活性炭广泛用于水净化、医药、废物处理和压缩空气过滤器(Lam et al.， 2017)。本研究的目的是研究木薯皮活性炭的吸附能力，木薯皮活性炭作为水过滤器，特别是对铜(II)金属的去除与多种活化剂的最佳接触时间和使用活性炭在简单的家用规模的水过滤器。结果表明，咖啡渣活性炭的产率、含水率、灰分、碘吸收率等指标均符合SNI No.06-3730- 1995活性炭质量标准。浓度越高，活性炭对Cu (II)金属的吸收量越大，从变化数据来看，活化剂的最佳选择是活化剂KOH浓度为0.3 m的活性炭。活性炭在5小时内装箱，平均产率为0.1898毫克/升，符合清洁水标准，即根据2008年东爪哇地区法规，其中规定水中铜含量为每升0.2毫克的阈值。
{"title":"Penggunaan Limbah Kulit Singkong pada Filter Air Sederhana Skala Rumah Tangga","authors":"Ihat Solihat, Agustin Setyowati","doi":"10.32493/JITK.V5I1.8639","DOIUrl":"https://doi.org/10.32493/JITK.V5I1.8639","url":null,"abstract":"Cassava (Manihot utillisima) is a staple food for Indonesians after rice and corn. Cassava is a natural product (product) which is abundant in Indonesia, especially in the areas of Central Tawa and West Java. Activated carbon is a porous material derived from carbon material by combustion or thermal decomposition. Activated carbon is widely used for water purification, medicine, waste treatment and as a filter in compressed air (Lam et al., 2017). The purpose of this research is the quality of activated charcoal from cassava peel absorption capacity of activated carbon from cassava peels as a water filter, especially for removal of Cu (II) metal with a variety of activators and the optimum duration of contact with the use of activated carbon in a simple home scale water filter. The results showed that the quality of activated charcoal from coffee grounds which includes the quality of yield, moisture content, ash content and absorption of iodine has met SNI No.06-3730- 1995 Activated Charcoal Quality Standards. The higher the concentration, the greater the absorption of activated charcoal on Cu (II) metal, and from the variation data the most optimal activator is activated charcoal with a KOH activator of 0.3 m. The results of boxing the activated charcoal within 5 hours with an average yield of 0.1898 mg per liter meet the clean water standards, namely according to the 2008 East Java Regional Regulation which states that the Cu content in water is at a threshold of 0.2 mg per liter. ","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80120285","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 : 2020-03-29DOI: 10.24036/student.v4i2.842
Wahyu Isra Deni, Afdhal Afdhal
Tujuan penelitian ini adalah untuk 1). Mengetahui bagaimana ketersediaan sarana air bersih di Desa Sungai Pasak. 2). Mengetahui bagaimana kondisi MCK di Desa Sungai Pasak. 3). Mengetahui bagaimana kondisi sarana pembuangan sampah di Desa Sungai Pasak. 4). Mengetahui bagaimana kondisi sarana pembuangan air limbah di Desa Sungai Pasak. Penelitian ini merupakan penelitian deskriptif. Jenis data yang digunakan adalah data primer. Ada 74 orang menjadi sampel responden penelitian yang berada di 4 dusun yang berada di Desa Sungai Pasak. Pengambilan data dengan cara menyebar angket dan dianalisis menggunakan tekinik analisa data menurut Ari Kunto. Hasil dari penelitian ini yaitu : 1). Ketersediaan sarana air bersih sudah memadai namun (10%) masih mengandalkan air sungai yang tergolong bersih. 2). Kondisi MCK sudah memenuhi ketentuan dan syarat dengan adanya 95% rumah tangga yang memiliki kamar mandi dan jamban. 3). Kondisi pembuangan sampah sudah memenuhi syarat kesehatan lingkungan dapat dilihat dari 27% masyarakat membuang sampah di tong sampah rumahnya, 68% masyarakat membuang sampah di tanah galian perkarangan rumah dan 5% masyarakat membuang sampah langsung ke TPA. 4). Kondisi pembuangan air limbah belum memenuhi syarat kesehatan lingkungan dapat dilihat dari 7% masyarakat yang tidak memilki saluran limbah, 20% masyarakat yang memilki saluran limbah menuju sungai, 41% masyarakat yang memilki saluran limbah menuju kolam dan 32% masyarakat yang memiliki saluran limbah menuju saluran irigasi.
{"title":"Tujuan","authors":"Wahyu Isra Deni, Afdhal Afdhal","doi":"10.24036/student.v4i2.842","DOIUrl":"https://doi.org/10.24036/student.v4i2.842","url":null,"abstract":"Tujuan penelitian ini adalah untuk 1). Mengetahui bagaimana ketersediaan sarana air bersih di Desa Sungai Pasak. 2). Mengetahui bagaimana kondisi MCK di Desa Sungai Pasak. 3). Mengetahui bagaimana kondisi sarana pembuangan sampah di Desa Sungai Pasak. 4). Mengetahui bagaimana kondisi sarana pembuangan air limbah di Desa Sungai Pasak. \u0000Penelitian ini merupakan penelitian deskriptif. Jenis data yang digunakan adalah data primer. Ada 74 orang menjadi sampel responden penelitian yang berada di 4 dusun yang berada di Desa Sungai Pasak. Pengambilan data dengan cara menyebar angket dan dianalisis menggunakan tekinik analisa data menurut Ari Kunto. \u0000Hasil dari penelitian ini yaitu : 1). Ketersediaan sarana air bersih sudah memadai namun (10%) masih mengandalkan air sungai yang tergolong bersih. 2). Kondisi MCK sudah memenuhi ketentuan dan syarat dengan adanya 95% rumah tangga yang memiliki kamar mandi dan jamban. 3). Kondisi pembuangan sampah sudah memenuhi syarat kesehatan lingkungan dapat dilihat dari 27% masyarakat membuang sampah di tong sampah rumahnya, 68% masyarakat membuang sampah di tanah galian perkarangan rumah dan 5% masyarakat membuang sampah langsung ke TPA. 4). Kondisi pembuangan air limbah belum memenuhi syarat kesehatan lingkungan dapat dilihat dari 7% masyarakat yang tidak memilki saluran limbah, 20% masyarakat yang memilki saluran limbah menuju sungai, 41% masyarakat yang memilki saluran limbah menuju kolam dan 32% masyarakat yang memiliki saluran limbah menuju saluran irigasi.","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77151995","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 : 2020-03-19DOI: 10.33366/rekabuana.v5i1.1659
Kartika Udyani, D. Purwaningsih, Mochamad Ali Wafa, Mokhammad Rif'an Kholili
The metal coating industry produces waste water containing chromium metal in concentrations large enough so that it will be dangerous if disposed of directly without being processed first. The aim of this study was to determine the effect of peanut shell activation, biosorbent weight, and contact time for chromium metal removal. Then peanut shells are activated using H2SO4 0.05 M. Furthermore, peanut shells used as biosorbents are weighed as much as 1, 2, 3, 4 and 5% of the weight of industrial liquid waste that has been determined. Then the stirring process is carried out with a speed of 150 rpm with a contact time of 30, 60 and 90 minutes. After that the mixture is filtered and the total chrome metal is analyzed. Based on the results of the study it can be concluded that biosorbents from acid-activated peanut peels can reduce chrome metal by 62.23% while biosorbents without activation are able to reduce chrome metal by 42.92%. The best results of biosorbent on chromium removal were obtained on the addition of biosorbent weight of 5: 100 at a contact time of 60 minutes with a stirring speed of 150 rpm which was 83.38%.ABSTRAKIndustri pelapisan logam menghasilkan limbah cair yang mengandung logam krom dalam konsentrasi yang cukup besar sehingga akan berbahaya jika dibuang langsung tanpa diolah terlebih dahulu. Penelitian ini bertujuan untuk mengetahui pengaruh aktivasi kulit kacang tanah, berat biosorben, dan lama waktu kontak terhadap removal logam krom pada air limbah. Penelitian ini diawali dengan mengoven kulit kacang tanah dengan suhu 1050C, kemudian diblender dan diayak sehingga mendapatkan ukuran 100 mesh. Kemudian kulit kacang tanah diaktivasi menggunakan H2SO4 0,05 M. Selanjutnya kulit kacang tanah digunakan sebagai biosorben ditimbang sebanyak 1, 2, 3, 4 dan 5 % terhadap berat limbah cair industri yang telah ditentukan. Selanjutnya dilakukan proses pengadukan dengan kecepatan 150 rpm dengan lama waktu kontak 30, 60 dan 90 menit. Setelah itu campuran disaring dan hasil filtrat dianalisa logam krom totalnya. Berdasarkan hasil penelitian dapat disimpulkan bahwa biosorben dari kulit kacang tanah teraktivasi asam mampu menurunkan logam krom sebesar 62,23% sedangkan biosorben tanpa aktivasi mampu menurunkan logam krom 42,92%. Hasil terbaik biosorben terhadap removal krom diperoleh pada penambahan berat biosorben sebesar 5:100 pada lama waktu kontak 60 menit dengan kecepatan pengadukan 150 rpm yaitu 83,38%.
金属涂层工业产生的含铬废水浓度很高，如果不经处理直接处理就会造成危险。本研究的目的是确定花生壳活化、生物吸附剂重量和接触时间对金属铬去除的影响。然后用0.05 m的H2SO4对花生壳进行活化，并用已测定的工业废液重量的1、2、3、4和5%称量花生壳作为生物吸附剂。然后以150rpm的转速进行搅拌，接触时间分别为30min、60min和90min。然后对混合物进行过滤，分析总金属铬。研究结果表明，酸活化花生皮生物吸附剂对金属铬的还原率为62.23%，未活化的生物吸附剂对金属铬的还原率为42.92%。生物吸附剂添加量为5∶100，接触时间为60分钟，搅拌速度为150 rpm，去除铬的效果为83.38%。【摘要】工业上的龙葵、龙葵、龙葵、龙葵、龙葵、龙葵、龙葵、龙葵、龙葵、龙葵、龙葵等。Penelitian ini bertujuan untuk mengetahui pengaruh aktivasi kulit kacang tanah, berat biosorben, danlama waktu kontak terhadap removal logam kada air limba。Penelitian ini diawali dendenan mengoven kulit kacang tanah dendenan suhu 1050C, kemudian diblender dan diaak seingga mendapatkan ukuran 100目。Kemudian kulit kacang tanah diaktivasi menggunakan H2SO4 0,05 M. Selanjutnya kulit kacang tanah digunakan sebagai biosorben ditimbang sebanyak 1,2,3,4 dan 5% terhadap berberat limbah椅子工业yang telah ditentukan。Selanjutnya dilakukan提议pengadukan dengan keepatan 150 rpm dengan lama waktu kontak 30,60 dan 90 menit。Setelah itu campuran disdisan，并从整个国家过滤了所有的数据。Berdasarkan hasil penelitian dapat dispulkan bahwa biosorben dari kulit kacang tanah teraktivasi asam mampu menurunkan logam krom sebesar 62,23% sedangkan biosorben tanpa aktivasi mampu menurunkan logam krom 42,92%。Hasil terbaik biosorben terhadap removal kfrom diperoleh pada penambahan berat biosorben sebesar 5:100 pada lama waktu kontak 60 menit dengan keepatan pengadukan 150 rpm yitu 83,38%。
{"title":"Pengolahan Limbah Krom menggunakan Limbah Kulit Kacang Tanah","authors":"Kartika Udyani, D. Purwaningsih, Mochamad Ali Wafa, Mokhammad Rif'an Kholili","doi":"10.33366/rekabuana.v5i1.1659","DOIUrl":"https://doi.org/10.33366/rekabuana.v5i1.1659","url":null,"abstract":"The metal coating industry produces waste water containing chromium metal in concentrations large enough so that it will be dangerous if disposed of directly without being processed first. The aim of this study was to determine the effect of peanut shell activation, biosorbent weight, and contact time for chromium metal removal. Then peanut shells are activated using H2SO4 0.05 M. Furthermore, peanut shells used as biosorbents are weighed as much as 1, 2, 3, 4 and 5% of the weight of industrial liquid waste that has been determined. Then the stirring process is carried out with a speed of 150 rpm with a contact time of 30, 60 and 90 minutes. After that the mixture is filtered and the total chrome metal is analyzed. Based on the results of the study it can be concluded that biosorbents from acid-activated peanut peels can reduce chrome metal by 62.23% while biosorbents without activation are able to reduce chrome metal by 42.92%. The best results of biosorbent on chromium removal were obtained on the addition of biosorbent weight of 5: 100 at a contact time of 60 minutes with a stirring speed of 150 rpm which was 83.38%.ABSTRAKIndustri pelapisan logam menghasilkan limbah cair yang mengandung logam krom dalam konsentrasi yang cukup besar sehingga akan berbahaya jika dibuang langsung tanpa diolah terlebih dahulu. Penelitian ini bertujuan untuk mengetahui pengaruh aktivasi kulit kacang tanah, berat biosorben, dan lama waktu kontak terhadap removal logam krom pada air limbah. Penelitian ini diawali dengan mengoven kulit kacang tanah dengan suhu 1050C, kemudian diblender dan diayak sehingga mendapatkan ukuran 100 mesh. Kemudian kulit kacang tanah diaktivasi menggunakan H2SO4 0,05 M. Selanjutnya kulit kacang tanah digunakan sebagai biosorben ditimbang sebanyak 1, 2, 3, 4 dan 5 % terhadap berat limbah cair industri yang telah ditentukan. Selanjutnya dilakukan proses pengadukan dengan kecepatan 150 rpm dengan lama waktu kontak 30, 60 dan 90 menit. Setelah itu campuran disaring dan hasil filtrat dianalisa logam krom totalnya. Berdasarkan hasil penelitian dapat disimpulkan bahwa biosorben dari kulit kacang tanah teraktivasi asam mampu menurunkan logam krom sebesar 62,23% sedangkan biosorben tanpa aktivasi mampu menurunkan logam krom 42,92%. Hasil terbaik biosorben terhadap removal krom diperoleh pada penambahan berat biosorben sebesar 5:100 pada lama waktu kontak 60 menit dengan kecepatan pengadukan 150 rpm yaitu 83,38%. ","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89076871","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 : 2020-03-17DOI: 10.33366/rekabuana.v5i1.1612
Armin Naibaho, Aulia Rahman
Abstrak Bahan alternatif pengganti semen mulai banyak dicari karena isu lingkungan. Proses pembuatan semen konvensional terindikasi sebagai salah satu penyumbang tertinggi dalam meningkatnya kadar karbondioksida di udara. Salah satu substansi yang marak digunakan untuk bahan pengganti semen adalah fly ash karena sifatnya yang serupa dengan semen dan jumlahnya yang melimpah sebagai hasil residu pembakaran tungku batu hara di PLTU. Secara umum, fly ash sendiri dikelompokkan menjadi dua jenis yaitu tipe C dan F. Tipe C jarang digunakan karena karakternya yang mudah mengeras. Namun, pada penelitian lebih lanjut, tipe ini memiliki kelebihan dalam meningkatnya kuat tekan pada umur prematur. Penelitian ini dibuat untuk mendapatkan rasio fly ash tipe C yang tepat dengan cementitious material pada mortar. Pengetesan dilakukan hanya pada minggu pertama dan kedua untuk mengamati perkembangan kekuatan awal. Namun, tidak semua kombinasi bisa diujikan karena kekuatannya terlalu rendah. Hanya kombinasi fly ash 25% saja yang memberikan kekuatan 20 MPa pada umur 7 hari, yang mana mengungguli sampel kontrol dengan kekuatan 19,36 Mpa. Untuk selanjutnya, kekuatan sampel fly ash cenderung lebih rendah jika dibandingkan dengan sampel kontrol.
{"title":"Efek Penambahan Fly Ash Tipe C terhadap Kuat Tekan Mortar","authors":"Armin Naibaho, Aulia Rahman","doi":"10.33366/rekabuana.v5i1.1612","DOIUrl":"https://doi.org/10.33366/rekabuana.v5i1.1612","url":null,"abstract":"Abstrak Bahan alternatif pengganti semen mulai banyak dicari karena isu lingkungan. Proses pembuatan semen konvensional terindikasi sebagai salah satu penyumbang tertinggi dalam meningkatnya kadar karbondioksida di udara. Salah satu substansi yang marak digunakan untuk bahan pengganti semen adalah fly ash karena sifatnya yang serupa dengan semen dan jumlahnya yang melimpah sebagai hasil residu pembakaran tungku batu hara di PLTU. Secara umum, fly ash sendiri dikelompokkan menjadi dua jenis yaitu tipe C dan F. Tipe C jarang digunakan karena karakternya yang mudah mengeras. Namun, pada penelitian lebih lanjut, tipe ini memiliki kelebihan dalam meningkatnya kuat tekan pada umur prematur. Penelitian ini dibuat untuk mendapatkan rasio fly ash tipe C yang tepat dengan cementitious material pada mortar. Pengetesan dilakukan hanya pada minggu pertama dan kedua untuk mengamati perkembangan kekuatan awal. Namun, tidak semua kombinasi bisa diujikan karena kekuatannya terlalu rendah. Hanya kombinasi fly ash 25% saja yang memberikan kekuatan 20 MPa pada umur 7 hari, yang mana mengungguli sampel kontrol dengan kekuatan 19,36 Mpa. Untuk selanjutnya, kekuatan sampel fly ash cenderung lebih rendah jika dibandingkan dengan sampel kontrol.","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79557230","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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