Pub Date : 2023-04-30DOI: 10.33005/jurnal_tekkim.v17i2.3785
Yuniar Dwi Lestari, Mia Tri Rahayuningtyas, Lucky Indrati Utami, Kindriari Nurma Wahyusi
{"title":"SINTESIS SILIKA XEROGEL DARI SABUT KELAPA DENGAN METODE SOL-GEL","authors":"Yuniar Dwi Lestari, Mia Tri Rahayuningtyas, Lucky Indrati Utami, Kindriari Nurma Wahyusi","doi":"10.33005/jurnal_tekkim.v17i2.3785","DOIUrl":"https://doi.org/10.33005/jurnal_tekkim.v17i2.3785","url":null,"abstract":"","PeriodicalId":52562,"journal":{"name":"Jurnal Teknik Kimia dan Lingkungan","volume":"220 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82101383","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 : 2023-04-30DOI: 10.33005/jurnal_tekkim.v17i2.3789
Muhammad Hakam, Firnanti Praditama, E. Kurniati
Blood clam shells produced from the consumption of blood clams contribute to the emergence of blood clam shell waste. Waste that accumulates without processing causes pollution to the environment. Blood clam shells can be processed into chitosan. The excellent quality of chitosan can be seen from the degree of deacetylation. This study seeks to determine the relationship between the concentration of NaOH solution and reaction time to increase the value of the degree of deacetylation to establish the optimal concentration of NaOH solution and time of response. The next goal is to get high-quality chitosan products based on SNI requirements. The deacetylation stage employs a 30% concentration of NaOH solution, 35%, 40%, 45%, and 50%, and stirring times of 0.5; 1; 1.5; 2; 2.5 hours variables. The outcomes demonstrated that the degree of deacetylation was raised during the synthesis of blood clam shells into chitosan with the addition of NaOH concentration and reaction time. By the 2018 SNI chitosan standard, the best findings in this investigation had a yield value of 30.5% and a degree of deacetylation from the FTIR analysis of 86.0365%. These results were obtained at a NaOH concentration of 50% with a reaction time of 2.5 hours.
{"title":"PENINGKATAN DERAJAT DEASETILASI DALAM SINTESIS KITOSAN DARI CANGKANG KERANG DARAH","authors":"Muhammad Hakam, Firnanti Praditama, E. Kurniati","doi":"10.33005/jurnal_tekkim.v17i2.3789","DOIUrl":"https://doi.org/10.33005/jurnal_tekkim.v17i2.3789","url":null,"abstract":"Blood clam shells produced from the consumption of blood clams contribute to the emergence of blood clam shell waste. Waste that accumulates without processing causes pollution to the environment. Blood clam shells can be processed into chitosan. The excellent quality of chitosan can be seen from the degree of deacetylation. This study seeks to determine the relationship between the concentration of NaOH solution and reaction time to increase the value of the degree of deacetylation to establish the optimal concentration of NaOH solution and time of response. The next goal is to get high-quality chitosan products based on SNI requirements. The deacetylation stage employs a 30% concentration of NaOH solution, 35%, 40%, 45%, and 50%, and stirring times of 0.5; 1; 1.5; 2; 2.5 hours variables. The outcomes demonstrated that the degree of deacetylation was raised during the synthesis of blood clam shells into chitosan with the addition of NaOH concentration and reaction time. By the 2018 SNI chitosan standard, the best findings in this investigation had a yield value of 30.5% and a degree of deacetylation from the FTIR analysis of 86.0365%. These results were obtained at a NaOH concentration of 50% with a reaction time of 2.5 hours.","PeriodicalId":52562,"journal":{"name":"Jurnal Teknik Kimia dan Lingkungan","volume":"92 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79155356","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}
E. Naryono, Susanto Susanto, M. A. I. Iswara, Cucuk Evi Lusiani
The increasing industrial waste was caused problems for the environment. Bagasse is a solid waste produced from the sugar industry. Vinasse is bioethanol industry liquid waste from molasses which contains much nutrients. The vinasse and bagasse in this study was developed into biochar. This study aimed to determine the effect of vinasse addition on biochar characteristics. The yield and characteristics of the biochar were then compared. Based on gravimetric, pH, and SEM-EDX analysis, the result indicated that adding vinasse to the biochar was increasing yield, water content and ash content, lowering pH, and tend to increase nutrient levels (carbon, nitrogen, and potassium). The biochar produced from bagasse and vinasse by pyrolysis had a yield of 6.682-9.406%; water content of 7.0-8.2%; ash content of 4.8-13.6%; at pH 8.4-88; carbon content (C) of 65.07-80.88%; nitrogen (N) content of 2.06-8.66%; and potassium (K) levels of 0.00-2.15%, while phosphorus (P) levels were not detected in SEM-EDX analysis. Based on the consideration of the highest levels of nitrogen and potassium elements needed by plants, the optimum biochar was obtained from bagasse with a vinasse of 7.5%.
{"title":"The Effect of Adding Vinasse for Biochar Production from Bagasse by Pyrolysis Method","authors":"E. Naryono, Susanto Susanto, M. A. I. Iswara, Cucuk Evi Lusiani","doi":"10.33795/jtkl.v7i1.1373","DOIUrl":"https://doi.org/10.33795/jtkl.v7i1.1373","url":null,"abstract":"The increasing industrial waste was caused problems for the environment. Bagasse is a solid waste produced from the sugar industry. Vinasse is bioethanol industry liquid waste from molasses which contains much nutrients. The vinasse and bagasse in this study was developed into biochar. This study aimed to determine the effect of vinasse addition on biochar characteristics. The yield and characteristics of the biochar were then compared. Based on gravimetric, pH, and SEM-EDX analysis, the result indicated that adding vinasse to the biochar was increasing yield, water content and ash content, lowering pH, and tend to increase nutrient levels (carbon, nitrogen, and potassium). The biochar produced from bagasse and vinasse by pyrolysis had a yield of 6.682-9.406%; water content of 7.0-8.2%; ash content of 4.8-13.6%; at pH 8.4-88; carbon content (C) of 65.07-80.88%; nitrogen (N) content of 2.06-8.66%; and potassium (K) levels of 0.00-2.15%, while phosphorus (P) levels were not detected in SEM-EDX analysis. Based on the consideration of the highest levels of nitrogen and potassium elements needed by plants, the optimum biochar was obtained from bagasse with a vinasse of 7.5%.","PeriodicalId":52562,"journal":{"name":"Jurnal Teknik Kimia dan Lingkungan","volume":"15 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41303652","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}
Kapok seed oil, jatropha seed oil, and CPO Off-grade are vegetable oils that cannot used as food ingredients, but have great potential biofuels such as green diesel which can be directly applied without the addition of diesel. Making green diesel consists of pretreatment of raw materials and synthesis of green diesel. The purpose of this research is to make green diesel from three raw materials and variation of catalysts CoMo/ɣ-Al 2 O 3 and NiMo/ɣ-Al 2 O 3 used hydrogenation process that fulfill SNI Biodiesel. Making green diesel starts with giving initial pressure of 30 bar, temperature of 300 o C for the reaction stage 1 for 1 hour, and 400ºC for stage 2 for 1 hour in batch hydrogenation reactor of catalyst addition. The best green diesel results were obtained on CPO Off-grade using NiMo/ɣ-Al 2 O 3 catalyst with %yield of 96.4626%. The characterization results obtained that sulfur content, pour point, calorific value, GC-FID liquid, flash point, density, and cetane number fulfill the SNI biodiesel standard, but the kinematic viscosity value does not fulfill the SNI biodiesel standard.
{"title":"SINTESIS GREEN DIESEL DARI VARIASI FEEDSTOCK DAN KATALIS DENGAN PROSES HIDROGENASI","authors":"Zamroni Dita Firdaus, Firza Okta Sumarmiyati, B. Wahyudi, Sd Sumbogo Murti","doi":"10.33005/jurnal_tekkim.v17i2.3786","DOIUrl":"https://doi.org/10.33005/jurnal_tekkim.v17i2.3786","url":null,"abstract":"Kapok seed oil, jatropha seed oil, and CPO Off-grade are vegetable oils that cannot used as food ingredients, but have great potential biofuels such as green diesel which can be directly applied without the addition of diesel. Making green diesel consists of pretreatment of raw materials and synthesis of green diesel. The purpose of this research is to make green diesel from three raw materials and variation of catalysts CoMo/ɣ-Al 2 O 3 and NiMo/ɣ-Al 2 O 3 used hydrogenation process that fulfill SNI Biodiesel. Making green diesel starts with giving initial pressure of 30 bar, temperature of 300 o C for the reaction stage 1 for 1 hour, and 400ºC for stage 2 for 1 hour in batch hydrogenation reactor of catalyst addition. The best green diesel results were obtained on CPO Off-grade using NiMo/ɣ-Al 2 O 3 catalyst with %yield of 96.4626%. The characterization results obtained that sulfur content, pour point, calorific value, GC-FID liquid, flash point, density, and cetane number fulfill the SNI biodiesel standard, but the kinematic viscosity value does not fulfill the SNI biodiesel standard.","PeriodicalId":52562,"journal":{"name":"Jurnal Teknik Kimia dan Lingkungan","volume":"246 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86704591","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 : 2023-04-30DOI: 10.33005/jurnal_tekkim.v17i2.3792
Muhammad Dani Halim, Adam Karangan, S. Suprihatin, Atika Nandini
Bioplastics are one type of plastic that can be degraded by the activity of microorganism in the environment. Aking rice contains high levels of starch (about 70.68%) and has the potential to be used as the main source of ingredients for making bioplastics. This study aims to obtain optimal conditions for the addition of chitosan and sorbitol and to determine their effect on the quality of bioplastic production. The production of this bioplastic was carried out by using the solution casting method with a composition of 6 grams of aking rice flour added with chitosan and sorbitol according to variations. In this study, variations addition of sorbitol affected the percentage of elongation. While variations addition of chitosan affected the tensile strength. Based on the test results, the addition of 10 grams of chitosan and 5 ml of sorbitol can produced bioplastics with the following qualities: a tensile strength value of 5.716 MPa, an elongation value of 22.1%, and a biodegradation percentage of 32.91% within 45 days. The results obtained have complied with SNI No.7188.7 for elongation values and completely degraded within 45 days according to ASTM 5338.
{"title":"PEMANFAATAN LIMBAH NASI AKING PADA PEMBUATAN BIOPLASTIK DENGAN KITOSAN DAN PLASTICIZER SORBITOL","authors":"Muhammad Dani Halim, Adam Karangan, S. Suprihatin, Atika Nandini","doi":"10.33005/jurnal_tekkim.v17i2.3792","DOIUrl":"https://doi.org/10.33005/jurnal_tekkim.v17i2.3792","url":null,"abstract":"Bioplastics are one type of plastic that can be degraded by the activity of microorganism in the environment. Aking rice contains high levels of starch (about 70.68%) and has the potential to be used as the main source of ingredients for making bioplastics. This study aims to obtain optimal conditions for the addition of chitosan and sorbitol and to determine their effect on the quality of bioplastic production. The production of this bioplastic was carried out by using the solution casting method with a composition of 6 grams of aking rice flour added with chitosan and sorbitol according to variations. In this study, variations addition of sorbitol affected the percentage of elongation. While variations addition of chitosan affected the tensile strength. Based on the test results, the addition of 10 grams of chitosan and 5 ml of sorbitol can produced bioplastics with the following qualities: a tensile strength value of 5.716 MPa, an elongation value of 22.1%, and a biodegradation percentage of 32.91% within 45 days. The results obtained have complied with SNI No.7188.7 for elongation values and completely degraded within 45 days according to ASTM 5338.","PeriodicalId":52562,"journal":{"name":"Jurnal Teknik Kimia dan Lingkungan","volume":"108 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79387409","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}
M. Muharja, Siska Nuri Fadilah, Achri Isnan Khamil, Rizki Fitria Darmayanti, D. Putri, Meta Fitri Rizkiana, V. Aswie, Badril Azhar
The noodles in the market are dry noodles with 8-10% water content. Dried noodles have a longer shelf life because they are less prone to mold growth. Drying noodles with the help of the sun and tray dryers are currently an option because they are efficient and do not require a lot of energy. Reduction of water content is also optimized by soaking wet noodles in salt water. This study aims to determine the effect of soaking noodles in salt water and the flow rate to decrease the water content of noodles. The study began with soaking wet noodles in a salt solution with a variation of 50-150 g/L, then dried for 1 hour using a hybrid method and tray dryer with a flow rate variation of 1.2-3.3 m/s. Observations were made at intervals of 0-1 hour. The results showed that the time and speed of the flow rate can reduce the humidity in the drying chamber of the tray dryer. The lowest water content reduction of up to 11% was obtained when soaking wet noodles in 150 g/L salt solution and at the highest flow rate of 3.3 m/s. The ANOVA results show that the drying method with tray dryer is more optimal than hybrid drying. Thus, this method can be a solution to optimize the noodle drying process quickly and efficiently.
{"title":"Effect of Immersion Concentration in Salt Solution, Drying Time and Air Velocity on Drying Wet Noodles Using a Tray Dryer and Solar Assistance","authors":"M. Muharja, Siska Nuri Fadilah, Achri Isnan Khamil, Rizki Fitria Darmayanti, D. Putri, Meta Fitri Rizkiana, V. Aswie, Badril Azhar","doi":"10.33795/jtkl.v7i1.340","DOIUrl":"https://doi.org/10.33795/jtkl.v7i1.340","url":null,"abstract":"The noodles in the market are dry noodles with 8-10% water content. Dried noodles have a longer shelf life because they are less prone to mold growth. Drying noodles with the help of the sun and tray dryers are currently an option because they are efficient and do not require a lot of energy. Reduction of water content is also optimized by soaking wet noodles in salt water. This study aims to determine the effect of soaking noodles in salt water and the flow rate to decrease the water content of noodles. The study began with soaking wet noodles in a salt solution with a variation of 50-150 g/L, then dried for 1 hour using a hybrid method and tray dryer with a flow rate variation of 1.2-3.3 m/s. Observations were made at intervals of 0-1 hour. The results showed that the time and speed of the flow rate can reduce the humidity in the drying chamber of the tray dryer. The lowest water content reduction of up to 11% was obtained when soaking wet noodles in 150 g/L salt solution and at the highest flow rate of 3.3 m/s. The ANOVA results show that the drying method with tray dryer is more optimal than hybrid drying. Thus, this method can be a solution to optimize the noodle drying process quickly and efficiently.","PeriodicalId":52562,"journal":{"name":"Jurnal Teknik Kimia dan Lingkungan","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47565192","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}
{"title":"PENGOLAHAN LIMBAH CAIR BATIK DENGAN METODE OZONASI UNTUK MENURUNKAN KADAR COD DAN TSS","authors":"Aprillia Puspitasari, Azzahra Putri Tania, Nurul Widji Triana","doi":"10.33005/jurnal_tekkim.v17i2.3781","DOIUrl":"https://doi.org/10.33005/jurnal_tekkim.v17i2.3781","url":null,"abstract":"","PeriodicalId":52562,"journal":{"name":"Jurnal Teknik Kimia dan Lingkungan","volume":"15 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72483435","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}
N. I. Azkiya, R. D. Chrisnandari, Wianthi Septia Witasari
Cadmium (Cd) metal is a heavy metal that can cause environmental pollution if its levels are above the environmental quality standard value. Generally, industrial wastes such as paper industry waste contain heavy metal Cd with levels reaching 0.026 ppm. Meanwhile, the quality standard for Cd metal in the environment is 0.005 ppm. For this reason, it is necessary to process it to reduce the levels of Cd metal in the waste before being discharged into the environment. One way that can be used to reduce the levels of Cd metal is by adsorption method using Cypraea moneta clamshells containing chitin. This study used variations in the particle size of the shellfish adsorbent of 6 and 12 mesh. In addition, the ratio of the amount of adsorbate and adsorbent (mg:mg) is 1 : 0.5x106; 1 : 1x106; and 1 : 1.5x106. Based on the results obtained, it showed that the use of shellfish as an adsorbent was able to reduce Cd metal content up to 89%.
{"title":"Utilization of Yellow Shells (Cypraea moneta) in the Treatment of Cadmium Heavy Metal (Cd) Waste","authors":"N. I. Azkiya, R. D. Chrisnandari, Wianthi Septia Witasari","doi":"10.33795/jtkl.v7i1.327","DOIUrl":"https://doi.org/10.33795/jtkl.v7i1.327","url":null,"abstract":"Cadmium (Cd) metal is a heavy metal that can cause environmental pollution if its levels are above the environmental quality standard value. Generally, industrial wastes such as paper industry waste contain heavy metal Cd with levels reaching 0.026 ppm. Meanwhile, the quality standard for Cd metal in the environment is 0.005 ppm. For this reason, it is necessary to process it to reduce the levels of Cd metal in the waste before being discharged into the environment. One way that can be used to reduce the levels of Cd metal is by adsorption method using Cypraea moneta clamshells containing chitin. This study used variations in the particle size of the shellfish adsorbent of 6 and 12 mesh. In addition, the ratio of the amount of adsorbate and adsorbent (mg:mg) is 1 : 0.5x106; 1 : 1x106; and 1 : 1.5x106. Based on the results obtained, it showed that the use of shellfish as an adsorbent was able to reduce Cd metal content up to 89%.","PeriodicalId":52562,"journal":{"name":"Jurnal Teknik Kimia dan Lingkungan","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49535245","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}
{"title":"SINTESIS KATALIS Fe-ZSM-5 MELALUI VARIASI PREKURSOR DAN METODE PREPARASI","authors":"Sintha Soraya Santi, Shanita Agitiya Utama, Achmad Naufal Nuraffandy, Reva Edra Nugraha, B. Wahyudi, Silvana Dwi Nurhediana","doi":"10.33005/jurnal_tekkim.v17i2.3784","DOIUrl":"https://doi.org/10.33005/jurnal_tekkim.v17i2.3784","url":null,"abstract":"solid state ion","PeriodicalId":52562,"journal":{"name":"Jurnal Teknik Kimia dan Lingkungan","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89885973","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 : 2023-04-30DOI: 10.33005/jurnal_tekkim.v17i2.3782
Firman Windhono, Muhammad Milzam Dzaky, Retno Dewati, AR Yelvia Sunarti
Cangkang rajungan mengandung senyawa kitin dan kitosan yang dapat digunakan sebagai biokoagulan, yaitu biopolimer yang dapat digunakan secara komersial untuk membran yang berfungsi sebagai bahan koagulan dan flokulan. Kandungan kitin pada cangkang rajungan mencapai 22,66%. Zat kitin pada cangkang rajungan diproses menjadi biokoagulan untuk menyerap kandungan senyawa organik di dalam limbah produksi tahu, sehingga nilai chemical oxygen demand (COD) di dalam limbah tahu akan berkurang. Konsentrasi COD pada limbah produksi tahu mencapai 1017,35 mg/L, sehingga akan mengakibatkan pencemaran perairan. Penambahan biokoagulan dengan metode koagulasi-flokulasi dapat mengurangi kadar COD. Tujuan penelitian ini adalah untuk mengetahui jumlah dosis optimum dalam pembuatan biokoagulan. Metode penelitian menggunakan tiga tahapan yaitu demineralisasi, deproteinasi, dan deasetilasi. Penelitian dilakukan dengan mengambil sampel limbah dari hasil produksi tahu dan ditambahkan biokoagulan menggunakan metode koagulasi dan flokulasi. Berdasarkan hasil penelitian, diperoleh penambahan biokoagulan 0,4 g:250 ml memiliki efisiensi yang terbaik yaitu 99,5%, sehingga dapat menurunkan kadar COD sebesar 1017,35 mg/L menjadi 4,893 mg/L. Hal ini telah sesuai dengan standar baku mutu yang telah ditetapkan, sehingga pencemaran lingkungan perairan berkurang. DOI : https://doi.org/10.33005/jurnal_tekkim.v17i2.3782
{"title":"PEMANFAATAN KITOSAN DARI CANGKANG RAJUNGAN SEBAGAI BIOKOAGULAN PADA AIR LIMBAH INDUSTRI TAHU","authors":"Firman Windhono, Muhammad Milzam Dzaky, Retno Dewati, AR Yelvia Sunarti","doi":"10.33005/jurnal_tekkim.v17i2.3782","DOIUrl":"https://doi.org/10.33005/jurnal_tekkim.v17i2.3782","url":null,"abstract":"Cangkang rajungan mengandung senyawa kitin dan kitosan yang dapat digunakan sebagai biokoagulan, yaitu biopolimer yang dapat digunakan secara komersial untuk membran yang berfungsi sebagai bahan koagulan dan flokulan. Kandungan kitin pada cangkang rajungan mencapai 22,66%. Zat kitin pada cangkang rajungan diproses menjadi biokoagulan untuk menyerap kandungan senyawa organik di dalam limbah produksi tahu, sehingga nilai chemical oxygen demand (COD) di dalam limbah tahu akan berkurang. Konsentrasi COD pada limbah produksi tahu mencapai 1017,35 mg/L, sehingga akan mengakibatkan pencemaran perairan. Penambahan biokoagulan dengan metode koagulasi-flokulasi dapat mengurangi kadar COD. Tujuan penelitian ini adalah untuk mengetahui jumlah dosis optimum dalam pembuatan biokoagulan. Metode penelitian menggunakan tiga tahapan yaitu demineralisasi, deproteinasi, dan deasetilasi. Penelitian dilakukan dengan mengambil sampel limbah dari hasil produksi tahu dan ditambahkan biokoagulan menggunakan metode koagulasi dan flokulasi. Berdasarkan hasil penelitian, diperoleh penambahan biokoagulan 0,4 g:250 ml memiliki efisiensi yang terbaik yaitu 99,5%, sehingga dapat menurunkan kadar COD sebesar 1017,35 mg/L menjadi 4,893 mg/L. Hal ini telah sesuai dengan standar baku mutu yang telah ditetapkan, sehingga pencemaran lingkungan perairan berkurang. DOI : https://doi.org/10.33005/jurnal_tekkim.v17i2.3782","PeriodicalId":52562,"journal":{"name":"Jurnal Teknik Kimia dan Lingkungan","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135757053","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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