Pub Date : 2020-07-08DOI: 10.31001/jkireka.v1i1.10
Umul Lailatul Jannah, Gregorius Prima Indra Budianto
Microaeration and cell immobilization are two ways to improve the performance of vinasse anaerobic treatment. Several variations of vinasse anaerobic process were conducted to approach the effectivity of microaeration and cell immobilization addition in 200 ppm vinasse anaerobic treatment process. The variation of (R1) microaeration addition; (R2) zeolite addition as cell immobilizer; (R3) combination microaeration and zeolite addition and (R4) blank reactor – anaerobic reactor without microaeration and zeolite addition. The process was conducted in batch mode, pH in 7. During the process, gas volume was calculated by water replacement concept and sampling was done for analytical such as Volatile Solids (VS) and methane concentration. The result, combination between microaeration and zeolite addition was obtained the lag phase to be shorter while the biogas productivity and VS degradation rate were obtained the insignificant difference value with reactor with zeolite addition and reactor with microaeration addition respectively. Abstrak Beberapa variasi proses dilakukan untuk menakar sejauh mana efektifitas mikroaerasi dan imobilisasai sel pada proses pengolahan limbah vinasse 200 ppm secara anaerob, variasi tersebut diantaranya (R1) reactor dengan mikroaerasi, (R2) reactor dengan penambahan zeolite, (R3) reactor dengan penambahan mikoraerasi dan zeolite (R4) reactor control – tanpa penambahan mikroaerasi dan zeolite. Proses dijalankan pada kondisi pH 7, mode batch. Selama proses, pengukuran volume biogas dilakukan dengan konsep water replacement dan pengambilan sampel dilakukan untuk kebutuhan analisis Volatile Solids (VS) dan kadar metana. Hasilnya, penambahan zeolite pada reactor dengan mikroaerasi menghasilkan masa aklimatisasi tersingkat sedangkan produktivitas dan laju penunuran VS tidak berbeda signifikan masing-masing dari reactor dengan zeolite dan reactor dengan mikroaerasi.
微曝气和细胞固定化是提高酒糟厌氧处理性能的两种方法。以200 ppm的酒糟厌氧工艺为研究对象，研究了微曝气和细胞固定化添加对酒糟厌氧工艺的影响。(R1)微曝气添加量的变化;(R2)添加沸石作为细胞固定化剂;(R3)微曝气加沸石组合反应器和(R4)空白反应器-不加微曝气加沸石的厌氧反应器。该工艺以批处理方式进行，pH为7。在此过程中，通过水置换概念计算气体积，并对挥发性固体(VS)和甲烷浓度等分析进行采样。结果表明，微曝气与添加沸石的组合可获得较短的滞后期，而添加沸石的反应器与添加微曝气的反应器的沼气产率和VS降解率差异值均不显著。摘要/ abstract摘要:beberapa variasi制得dilakukan untuk menakar sejauitas microaerasi danimobilisseada制得pengolahan limbah vinasse 200ppm secara厌氧，variasi tersebut diantaranya (R1)反应器登干微型沸石，(R2)反应器登干微型沸石，(R3)反应器登干微型沸石(R4)反应器控制- tanpa penambahan微型沸石。Proses dijalankan pada kondisi ph7，模式批。Selama论文，企鹅体积沼气dilakukan dengan konsep水替换dan pengambilan样本dilakukan untuk kebutuhan分析挥发性固体(VS) dan kadar metana。Hasilnya, penambahan沸石，pada反应器，dengan微型反应器，menghasilkan, masa, aklimatisasi, tersingkat, sedangkan, produktivitas, danlaju, penunuran, VS, tidak, berbeda, signfikan, masing, dengan沸石反应器，dengan微型反应器。
{"title":"The Influence of Zeolite Addition into Anaerobic Vinasse Treatment Process in Microaerated Batch Reactor","authors":"Umul Lailatul Jannah, Gregorius Prima Indra Budianto","doi":"10.31001/jkireka.v1i1.10","DOIUrl":"https://doi.org/10.31001/jkireka.v1i1.10","url":null,"abstract":"Microaeration and cell immobilization are two ways to improve the performance of vinasse anaerobic treatment. Several variations of vinasse anaerobic process were conducted to approach the effectivity of microaeration and cell immobilization addition in 200 ppm vinasse anaerobic treatment process. The variation of (R1) microaeration addition; (R2) zeolite addition as cell immobilizer; (R3) combination microaeration and zeolite addition and (R4) blank reactor – anaerobic reactor without microaeration and zeolite addition. The process was conducted in batch mode, pH in 7. During the process, gas volume was calculated by water replacement concept and sampling was done for analytical such as Volatile Solids (VS) and methane concentration. The result, combination between microaeration and zeolite addition was obtained the lag phase to be shorter while the biogas productivity and VS degradation rate were obtained the insignificant difference value with reactor with zeolite addition and reactor with microaeration addition respectively.\u0000\u0000Abstrak\u0000Beberapa variasi proses dilakukan untuk menakar sejauh mana efektifitas mikroaerasi dan imobilisasai sel pada proses pengolahan limbah vinasse 200 ppm secara anaerob, variasi tersebut diantaranya (R1) reactor dengan mikroaerasi, (R2) reactor dengan penambahan zeolite, (R3) reactor dengan penambahan mikoraerasi dan zeolite (R4) reactor control – tanpa penambahan mikroaerasi dan zeolite. Proses dijalankan pada kondisi pH 7, mode batch. Selama proses, pengukuran volume biogas dilakukan dengan konsep water replacement dan pengambilan sampel dilakukan untuk kebutuhan analisis Volatile Solids (VS) dan kadar metana. Hasilnya, penambahan zeolite pada reactor dengan mikroaerasi menghasilkan masa aklimatisasi tersingkat sedangkan produktivitas dan laju penunuran VS tidak berbeda signifikan masing-masing dari reactor dengan zeolite dan reactor dengan mikroaerasi.","PeriodicalId":107274,"journal":{"name":"Jurnal Kimia dan Rekayasa","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123689529","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 printing industry produces wastewater from the ink used. Contains organic and inorganic pollutants such as lead, cadmium, chromium and zinc. Having a quality that exceeds the quality standards for wastewater. If it is discharged into the environment it can pollute the receiving water body. Need to do an analysis of organic pollutant content, by measuring the parameters of Chemical Oxygen Demand (COD). Determination of COD numbers in printing industry wastewater ink using titrimetry method (SNI 6989.73: 2009). Perform oxidation-reduction titration using Ferro Ammonium Sulfate (FAS) solution in printing industry ink wastewater. This study conducted three sampling replications. The results of the first day research obtained a COD rate of 33,088 mg /L; second day 69,694.6 mg /L; third day 67,830.4 mg /L. All three samples had COD figures exceeding the printing industry wastewater quality standard of 125 mg / L. Printing industry wastewater is not suitable to be discharged into the environment. Abstrak Industri percetakan menghasilkan limbah cair dari tinta yang digunakan. Mengandung polutan organik dan anorganik seperti timbal, kadmium, kromium, dan zink. Memiliki kualitas yang melebihi baku mutu air limbah. Apabila dibuang ke lingkungan dapat mencemari badan air penerima. Perlu dilakukan analisis kandungan polutan organik, dengan mengukur parameter Chemical Oxygen Demand (COD). Penentuan angka COD pada air limbah tinta industri percetakan dengan menggunakan metode titrimetri (SNI 6989.73:2009). Melakukan titrasi oksidasi-reduksi menggunakan larutan Ferro Amonium Sulfat (FAS) pada sampel air limbah tinta industri percetakan. Penelitian ini melakukan tiga kali ulangan sampling. Hasil penelitian hari pertama diperoleh angka COD sebesar 33.088 mg/L; hari kedua sebesar 69.484,6 mg/L; hari ketiga sebesar 67.830,4 mg/L. Ketiga sampel memilik angka COD melebihi baku mutu air limbah industri percetakan sebesar 125 mg/L. Air limbah tinta industri percetakan tidak layak dibuang ke lingkungan.
印刷业使用油墨会产生废水。含有有机和无机污染物，如铅、镉、铬和锌。水质超过污水水质标准的。如果排放到环境中，会污染接收水体。需要对有机污染物的含量进行分析，通过测量化学需氧量(COD)的参数。用滴定法测定印刷工业废水油墨中的COD值(SNI 6989.73: 2009)。用硫酸铁铵溶液对印刷工业油墨废水进行氧化还原滴定。本研究进行了三次抽样重复。第一天的研究结果得出COD率为33,088 mg /L;第二天69,694.6 mg /L;第三天67,830.4 mg /L。三个样品的COD均超过了印刷工业废水水质标准125 mg / l，印刷工业废水不适宜排放到环境中。[摘要]工业发展前景广阔，前景广阔，前景广阔，前景广阔。蒙蒙东的污染物有有机丹、有机铜、镉、镉、丹锌。Memiliki kualitas yang melebihi baku mutu air limba。阿比拉·迪旺克·林昆干·达喀尔·达喀尔·达喀尔。Perlu dilakukan分析kandungan污染有机物，dengan mengukur参数化学需氧量(COD)。中华人民共和国化学需氧量、空气浓度、工业浓度、登登市、孟古纳坎测定法(SNI 6989.73:2009)。马六甲硫酸盐铁(FAS)样品，空气中微量元素含量测定。佩内利尼·乌兰干取样。海参海参双酚类化合物COD含量33.088 mg/L;hari kedua sebesar 69.484,6 mg/L;hari ketiga sebesar 67.830,4 mg/L。Ketiga样品的COD浓度为125 mg/L。林巴航空有限公司是中国航空业的领头羊，也是中国航空业的领头羊。
{"title":"Chemical Oxygen Demand (COD) Analysis Ink Printing Waste Water Using Titrimetry Method","authors":"Dian Khristiani Suhari, P. Pujiastuti","doi":"10.31001/jkireka.v1i1.9","DOIUrl":"https://doi.org/10.31001/jkireka.v1i1.9","url":null,"abstract":"The printing industry produces wastewater from the ink used. Contains organic and inorganic pollutants such as lead, cadmium, chromium and zinc. Having a quality that exceeds the quality standards for wastewater. If it is discharged into the environment it can pollute the receiving water body. Need to do an analysis of organic pollutant content, by measuring the parameters of Chemical Oxygen Demand (COD). Determination of COD numbers in printing industry wastewater ink using titrimetry method (SNI 6989.73: 2009). Perform oxidation-reduction titration using Ferro Ammonium Sulfate (FAS) solution in printing industry ink wastewater. This study conducted three sampling replications. The results of the first day research obtained a COD rate of 33,088 mg /L; second day 69,694.6 mg /L; third day 67,830.4 mg /L. All three samples had COD figures exceeding the printing industry wastewater quality standard of 125 mg / L. Printing industry wastewater is not suitable to be discharged into the environment.\u0000\u0000Abstrak\u0000Industri percetakan menghasilkan limbah cair dari tinta yang digunakan. Mengandung polutan organik dan anorganik seperti timbal, kadmium, kromium, dan zink. Memiliki kualitas yang melebihi baku mutu air limbah. Apabila dibuang ke lingkungan dapat mencemari badan air penerima. Perlu dilakukan analisis kandungan polutan organik, dengan mengukur parameter Chemical Oxygen Demand (COD). Penentuan angka COD pada air limbah tinta industri percetakan dengan menggunakan metode titrimetri (SNI 6989.73:2009). Melakukan titrasi oksidasi-reduksi menggunakan larutan Ferro Amonium Sulfat (FAS) pada sampel air limbah tinta industri percetakan. Penelitian ini melakukan tiga kali ulangan sampling. Hasil penelitian hari pertama diperoleh angka COD sebesar 33.088 mg/L; hari kedua sebesar 69.484,6 mg/L; hari ketiga sebesar 67.830,4 mg/L. Ketiga sampel memilik angka COD melebihi baku mutu air limbah industri percetakan sebesar 125 mg/L. Air limbah tinta industri percetakan tidak layak dibuang ke lingkungan.","PeriodicalId":107274,"journal":{"name":"Jurnal Kimia dan Rekayasa","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127153402","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}
Jelly is a processed food product from seaweed that is given fruit juice, sugar and water and has a semi-solid but chewy texture. Jelly producers add food preservatives to maintain quality and extend shelf life. Permitted preservatives and commonly used for jelly products are sodium benzoate, potassium sorbate and sulfur dioxide. Each preservative is regulated the maximum limit of its use in the Head of BPOM RI Regulation No. 36 of 2013. This study aims to determine the content and levels of preservatives contained in jelly products.Qualitative analysis was carried out on preservatives of sodium benzoate, potassium sorbate and sulfur dioxide whether found in jelly products sold in traditional markets in the District of Jebres, Surakarta. Furthermore, quantitative analysis was carried out to determine the levels of preservatives contained in jelly agar products. Quantitative analysis of preservatives in jelly products by titrimetry and HPLC methods.The results showed that of the four jelly samples analyzed, there were three positive jelly samples containing sodium benzoate preservative with each Jelly A level of 688,559 mg / kg; Jelly B is 488,161 mg / kg and Jelly C is 139,711 mg / kg. There are 2 samples of jelly that do not meet the quality standards according to the Head of BPOM RI Regulation No. 36 of 2013 ie samples of Jelly A and Jelly B because more than 200 mg / kg. Abstrak Jelly agar merupakan produk olahan pangan dari rumput laut yang diberi sari buah-buahan, gula dan air serta memiliki tekstur setengah padat namun kenyal. Produsen jelly agar menambahkan bahan pengawet makanan untuk mempertahankan kualitas dan memperpanjang umur simpan. Bahan pengawet yang diperkenankan dan biasa digunakan untuk produk jelly agar adalah natrium benzoat, kalium sorbat dan belerang dioksida. Masing-masing bahan pengawet tersebut diatur batas maksimum penggunaannya dalam Peraturan Kepala BPOM RI No. 36 Tahun 2013. Penelitian ini bertujuan untuk mengetahui kandungan dan kadar pengawet yang terdapat pada produk jelly agar. Analisis kualitatif dilakukan terhadap bahan pengawet natrium benzoat, kalium sorbat dan belerang dioksida apakah terdapat pada produk jelly agar yang dijual di pasar tradisional di Kecamatan Jebres, Surakarta. Selanjutnya dilakukan analisis kuantitatif untuk mengetahui kadar bahan pengawet yang positif terdapat pada produk jelly agar. Analisis kuantitatif bahan pengawet pada produk jelly agar dengan metode titirimetri dan HPLC. Hasil penelitian menunjukkan dari keempat sampel jelly agar yang dianalisis, terdapat tiga sampel jelly agar yang positif mengandung bahan pengawet natrium benzoat dengan kadar masing-masing Jelly A sebesar 688,559 mg/kg; Jelly B sebesar 488,161 mg/kg dan Jelly C sebesar 139,711 mg/kg. Terdapat 2 sampel jelly agar yang tidak memenuhi baku mutu sesuai Peraturan Kepala BPOM RI No. 36 Tahun 2013 yaitu sampel Jelly A dan Jelly B karena lebih dari 200 mg/kg.
果冻是一种由海藻制成的加工食品，它被赋予果汁、糖和水，具有半固体但耐嚼的质地。果冻生产商添加食品防腐剂是为了保持质量和延长保质期。果冻产品中允许使用的防腐剂有苯甲酸钠、山梨酸钾和二氧化硫。每种防腐剂的最大使用限量都在2013年BPOM国际法规第36号中规定。本研究旨在确定果冻产品中防腐剂的含量和水平。对在雅加达杰布尔区传统市场销售的果冻产品中是否含有苯甲酸钠、山梨酸钾和二氧化硫防腐剂进行定性分析。此外，还进行了定量分析，以确定果冻琼脂制品中防腐剂的含量。用滴定法和高效液相色谱法定量分析果冻制品中的防腐剂。结果表明，4份果冻样品中有3份含有苯甲酸钠防腐剂的果冻样品呈阳性，每份果冻A含量为688,559 mg / kg;果冻B是488,161毫克/公斤，果冻C是139,711毫克/公斤。有2个果冻样品不符合2013年BPOM RI法规第36号规定的质量标准，即果冻A和果冻B的样品超过200毫克/公斤。摘要:琼脂merupakan产品olahan pangan dari rumput laut yang diberi sari buah-buahan, gula dan air sert memiliki tekstur setengah padat namun kenyal。Produsen jelly agar menambahkan bahan pengawet makanan untuk mempertahankan kualitas dan memperpanjang umur simpan。Bahan pengawet yang diperkenankan dan biasa digunakan untuk产品果冻琼脂adalah苯甲酸钠，sorbat钾dan belerang dioksida。2013年Tahun号，BPOM RI 36号。Penelitian ini bertujuan untuk mengetahui kandungan dan kadar pengawet yang terdapat patada产品果冻琼脂。分析质量的dilakukan terhadap bahan pengawet苯甲酸钠，钾sorbat dan belerang dioksida apakah terdapat pada产品jelly agar yang dijual di pasar traditional di Kecamatan Jebres, Surakarta。三色兰琼脂脂分析，定量分析孟格塔辉卡达尔巴汉彭格瓦阳阳阳性产物果冻琼脂。巴汉槟榔产品果冻、琼脂登根法、滴定法和高效液相色谱分析。Hasil penelitian menunjukkan dari keempat样品果冻琼脂阳阳分析，terdapat tiga样品果冻琼脂阳阳阳性mengandung bahan pengawet benzoat dengan kadar massingjelly A sebesar 688,559 mg/kg;果冻B脂脂488,161 mg/kg，果冻C脂脂139,711 mg/kg。Terdapat 2样品jelly yang tidak memenuhi baku mutu sesuai Peraturan Kepala BPOM RI No. 36 Tahun 2013 yitu样品jelly A dan jelly B karena lebih dari 200 mg/kg。
{"title":"Analysis Of Preservatives in Jelly at Traditional Markets","authors":"Dinar Wahyu Utami, P. Darmawan","doi":"10.31001/jkireka.v1i1.7","DOIUrl":"https://doi.org/10.31001/jkireka.v1i1.7","url":null,"abstract":"Jelly is a processed food product from seaweed that is given fruit juice, sugar and water and has a semi-solid but chewy texture. Jelly producers add food preservatives to maintain quality and extend shelf life. Permitted preservatives and commonly used for jelly products are sodium benzoate, potassium sorbate and sulfur dioxide. Each preservative is regulated the maximum limit of its use in the Head of BPOM RI Regulation No. 36 of 2013. This study aims to determine the content and levels of preservatives contained in jelly products.Qualitative analysis was carried out on preservatives of sodium benzoate, potassium sorbate and sulfur dioxide whether found in jelly products sold in traditional markets in the District of Jebres, Surakarta. Furthermore, quantitative analysis was carried out to determine the levels of preservatives contained in jelly agar products. Quantitative analysis of preservatives in jelly products by titrimetry and HPLC methods.The results showed that of the four jelly samples analyzed, there were three positive jelly samples containing sodium benzoate preservative with each Jelly A level of 688,559 mg / kg; Jelly B is 488,161 mg / kg and Jelly C is 139,711 mg / kg. There are 2 samples of jelly that do not meet the quality standards according to the Head of BPOM RI Regulation No. 36 of 2013 ie samples of Jelly A and Jelly B because more than 200 mg / kg.\u0000\u0000Abstrak\u0000Jelly agar merupakan produk olahan pangan dari rumput laut yang diberi sari buah-buahan, gula dan air serta memiliki tekstur setengah padat namun kenyal. Produsen jelly agar menambahkan bahan pengawet makanan untuk mempertahankan kualitas dan memperpanjang umur simpan. Bahan pengawet yang diperkenankan dan biasa digunakan untuk produk jelly agar adalah natrium benzoat, kalium sorbat dan belerang dioksida. Masing-masing bahan pengawet tersebut diatur batas maksimum penggunaannya dalam Peraturan Kepala BPOM RI No. 36 Tahun 2013. Penelitian ini bertujuan untuk mengetahui kandungan dan kadar pengawet yang terdapat pada produk jelly agar. Analisis kualitatif dilakukan terhadap bahan pengawet natrium benzoat, kalium sorbat dan belerang dioksida apakah terdapat pada produk jelly agar yang dijual di pasar tradisional di Kecamatan Jebres, Surakarta. Selanjutnya dilakukan analisis kuantitatif untuk mengetahui kadar bahan pengawet yang positif terdapat pada produk jelly agar. Analisis kuantitatif bahan pengawet pada produk jelly agar dengan metode titirimetri dan HPLC. Hasil penelitian menunjukkan dari keempat sampel jelly agar yang dianalisis, terdapat tiga sampel jelly agar yang positif mengandung bahan pengawet natrium benzoat dengan kadar masing-masing Jelly A sebesar 688,559 mg/kg; Jelly B sebesar 488,161 mg/kg dan Jelly C sebesar 139,711 mg/kg. Terdapat 2 sampel jelly agar yang tidak memenuhi baku mutu sesuai Peraturan Kepala BPOM RI No. 36 Tahun 2013 yaitu sampel Jelly A dan Jelly B karena lebih dari 200 mg/kg.","PeriodicalId":107274,"journal":{"name":"Jurnal Kimia dan Rekayasa","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124994463","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}
Spirulina sp. is a microalgae recently being developed because of its functions and benefits. This study aimed to determine the optimum growth of Spirulina cultivation using nutrient variables, which were cultured in three different containers, namely open pond batch, closed pond batch and open pond continue. Spirulina sp. was cultivated using NPK fertilizer and urea with freshwater media and light obtained from TL lamps 20 watts. The growth was observed every 24 hours for the analysis process using count booths to determine the number of Spirulina cells. Growth density rate of Spirulina cells in the open pond container batch was 500 cells / ml, in the closed pond batch was 400 cells / ml and in the open pond continue was 290 cells / ml with the number of starter cells of 110 cells / ml. Abstrak Spirulina sp. merupakan jenis mikroalga yang sedang banyak dikembangkan akhir-akhir ini karena memiliki banyak fungsi dan manfaat. Penelitian ini bertujuan untuk mengetahui pertumbuhan optimum pada kultivasi Spirulina sp dengan menggunakan variabel nutrien yang dikultur dengan 3 wadah yang berbeda yakni open pond batch, closed pond batch dan open pond continue. Spirulina sp. dikultivasi menggunakan pupuk NPK dan urea menggunakan media air tawar serta cahaya didapatkan dari lampu TL 20 watt kemudian pertumbuhan diamati setiap 24 jam untuk proses analisa digunakan bilik hitung untuk mengetahui jumlah sel spirulina. Angka pertumbuhan kepadatan sel mikroalga Spirulina sp. pada wadah open pond batch 500 sel/ml, pada closed pond batch 400 sel/ml dan pada open pond continue 290 sel/ml dengan jumlah sel stater 110 sel/ml
螺旋藻是近年来因其功能和效益而被开发的一种微藻。本研究旨在利用营养变量确定螺旋藻在三种不同容器中培养的最佳生长条件，即开放池分批、封闭池分批和开放池继续。采用淡水培养基和20瓦TL灯光照条件下，施用氮磷钾和尿素培养螺旋藻。在分析过程中，每24小时观察一次生长情况，使用计数室确定螺旋藻细胞的数量。开放池容器批螺旋藻细胞的生长密度率为500个细胞/ ml，封闭池批为400个细胞/ ml，开放池继续培养为290个细胞/ ml，发酵剂细胞数为110个细胞/ ml。Penelitian ini bertujuan untuk menggetahui pertumbuhan最适宜的养殖方式是螺旋藻sp dunan menggunakan变量营养盐dunan 3 wadah yang berbeda yakni开放池塘批次，封闭池塘批次和开放池塘继续。螺旋藻，dikultivasi menggunakan pupuk NPK dan尿素，menggunakan media air tawar serta cahaya didapatkan dari lampu TL 20瓦特kemudian pertumbuhan diamati seap 24 jam untuk proses分析，digunakan bilik hitung untuk mengetahui jumlah sel螺旋藻。Angka pertumbuhan kepadatan selkmicroalga Spirulina sp. pada wadah open pond batch 500 sell /ml, pada closed pond batch 400 sell /ml, pada open pond continue 290 sell /ml dengan jumlah selstatater 110 sell /ml
{"title":"The Effect of Nutrient And CO2 Change to Spirullina sp. Growth Cultivation","authors":"Widia Arrifa Asna, Sumardiyono","doi":"10.31001/jkireka.v1i1.8","DOIUrl":"https://doi.org/10.31001/jkireka.v1i1.8","url":null,"abstract":"Spirulina sp. is a microalgae recently being developed because of its functions and benefits. This study aimed to determine the optimum growth of Spirulina cultivation using nutrient variables, which were cultured in three different containers, namely open pond batch, closed pond batch and open pond continue. Spirulina sp. was cultivated using NPK fertilizer and urea with freshwater media and light obtained from TL lamps 20 watts. The growth was observed every 24 hours for the analysis process using count booths to determine the number of Spirulina cells. Growth density rate of Spirulina cells in the open pond container batch was 500 cells / ml, in the closed pond batch was 400 cells / ml and in the open pond continue was 290 cells / ml with the number of starter cells of 110 cells / ml.\u0000\u0000Abstrak\u0000Spirulina sp. merupakan jenis mikroalga yang sedang banyak dikembangkan akhir-akhir ini karena memiliki banyak fungsi dan manfaat. Penelitian ini bertujuan untuk mengetahui pertumbuhan optimum pada kultivasi Spirulina sp dengan menggunakan variabel nutrien yang dikultur dengan 3 wadah yang berbeda yakni open pond batch, closed pond batch dan open pond continue. Spirulina sp. dikultivasi menggunakan pupuk NPK dan urea menggunakan media air tawar serta cahaya didapatkan dari lampu TL 20 watt kemudian pertumbuhan diamati setiap 24 jam untuk proses analisa digunakan bilik hitung untuk mengetahui jumlah sel spirulina. Angka pertumbuhan kepadatan sel mikroalga Spirulina sp. pada wadah open pond batch 500 sel/ml, pada closed pond batch 400 sel/ml dan pada open pond continue 290 sel/ml dengan jumlah sel stater 110 sel/ml","PeriodicalId":107274,"journal":{"name":"Jurnal Kimia dan Rekayasa","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116734327","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 : 2020-07-08DOI: 10.31001/jkireka.v1i1.11
Kriscylla Sekar Arum, Dewi Astuti Herawati
The lathe industry produces 3-5 kg / month of lathe iron waste which has a negative impact on environmental pollution. However, iron lathe waste also has potential as a raw material for making ferrous sulfate and for making ferrous oxide.The synthesis of ferrous sulfate is carried out by mixing the lathe iron waste with 25% sulfuric acid with a variation of temperature (50; 60; 70) oC and time (5; 10; 15) minutes.The process of ferrous oxide synthesis is carried out by mixing ferrous sulfate crystals that have been formed with NaOH and then characterized into nanoparticles by SEM analysis.The results showed that the study produced ferrous sulfate from qualitative tests.The best temperature and time in the ferro sulfate synthesis process is at 70oC and 15 minutes with a yield of 7.52%.The results of SEM analysis measurements of the average ferrous oxide of 3 samples obtained a size of 39.1 nm Abstrak Industri besi bubut menghasilkan limbah besi bubut sekitar 3-5 kg/bulan yang menimbulkan dampak negatif terhadap pencemaran lingkungan. Namun limbah besi bubut juga mempunyai potensi sebagai bahan baku pembuatan ferro sulfat dan pembuatan ferro oksida. Sintesis ferro sulfat dilakukan dengan mencampurkan limbah besi bubut dengan asam sulfat 25% dengan variasi suhu (50; 60; 70)cC dan waktu (5; 10; 15) menit. Proses sintesis ferro oksida dilakukan dengan mencampurkan kristal ferro sulfat yang telah terbentuk dengan NaOH dan kemudian di karakterisasikan menjadi nanopartikel dengan analisis SEM. Hasil penelitian menunjukkan bahwa penelitian menghasilkan ferro sulfat dari uji kualitatif. Suhu dan waktu terbaik pada proses sintesis ferro sulfat yaitu pada suhu 70oC dan waktu 15 menit dengan nilai rendemen 7,52%. Hasil pengukuran analisis SEM terhadap ferro oksida rerata dari 3 sampel diperoleh ukuran 39,1 nm.
车床工业每月产生3-5公斤的车床废铁，对环境污染有负面影响。然而，铁车床废料也有潜力作为制造硫酸亚铁和制造氧化亚铁的原料。将车床废铁与25%的硫酸混合，在温度(50℃;60;70)温度和时间(5;10;15)分钟。合成氧化亚铁的过程是将形成的硫酸亚铁晶体与NaOH混合，然后通过SEM分析表征为纳米颗粒。定性试验结果表明，本研究生产出硫酸亚铁。硫酸铁合成的最佳温度和时间为70℃、15 min，产率为7.52%。SEM分析结果表明，3个样品的氧化亚铁的平均粒径为39.1 nm。摘要:工业贝斯(3-5 kg) /布兰(3-5 kg/布兰)阳(3-5 kg/布兰);Namun limbah besi but juga mempunyai potential sebagai bahan baku pembuatan ferro sulfat和pembuatan ferro oksida。sintes铁硫酸盐dilakukan dengan mencampurkan limbah besi但dengan asam硫酸盐25% dengan varasi suhu (50;60;70)cC dan waktu (5;10;15) menit。制备硅铁、硅铁、硅铁、硅铁、硅铁、硅铁、硅铁、硅铁、硅铁、硅铁、硅铁、硅铁、硅铁、硅铁、硅铁、硅铁、硅铁、硅铁。哈西尔邦，孟哈西尔邦，孟哈西尔邦，硫酸铁达乌吉质量。苏湖丹瓦克图特拜克帕达加工sintesro硫酸铁雅图帕达苏湖70℃丹瓦克图15 menmendengan nilai 7,52%。Hasil企鹅分析SEM terhadap ferro - oksida rerata 3个样品，在ukuran 39,1 nm。
{"title":"Effect of Temperature and Time of Reaction Of FeSO4 Synthesis and Characterization Of Fe2O3 Nanoparticles from Lathe Iron Waste","authors":"Kriscylla Sekar Arum, Dewi Astuti Herawati","doi":"10.31001/jkireka.v1i1.11","DOIUrl":"https://doi.org/10.31001/jkireka.v1i1.11","url":null,"abstract":"The lathe industry produces 3-5 kg / month of lathe iron waste which has a negative impact on environmental pollution. However, iron lathe waste also has potential as a raw material for making ferrous sulfate and for making ferrous oxide.The synthesis of ferrous sulfate is carried out by mixing the lathe iron waste with 25% sulfuric acid with a variation of temperature (50; 60; 70) oC and time (5; 10; 15) minutes.The process of ferrous oxide synthesis is carried out by mixing ferrous sulfate crystals that have been formed with NaOH and then characterized into nanoparticles by SEM analysis.The results showed that the study produced ferrous sulfate from qualitative tests.The best temperature and time in the ferro sulfate synthesis process is at 70oC and 15 minutes with a yield of 7.52%.The results of SEM analysis measurements of the average ferrous oxide of 3 samples obtained a size of 39.1 nm\u0000\u0000Abstrak\u0000Industri besi bubut menghasilkan limbah besi bubut sekitar 3-5 kg/bulan yang menimbulkan dampak negatif terhadap pencemaran lingkungan. Namun limbah besi bubut juga mempunyai potensi sebagai bahan baku pembuatan ferro sulfat dan pembuatan ferro oksida. Sintesis ferro sulfat dilakukan dengan mencampurkan limbah besi bubut dengan asam sulfat 25% dengan variasi suhu (50; 60; 70)cC dan waktu (5; 10; 15) menit. Proses sintesis ferro oksida dilakukan dengan mencampurkan kristal ferro sulfat yang telah terbentuk dengan NaOH dan kemudian di karakterisasikan menjadi nanopartikel dengan analisis SEM. Hasil penelitian menunjukkan bahwa penelitian menghasilkan ferro sulfat dari uji kualitatif. Suhu dan waktu terbaik pada proses sintesis ferro sulfat yaitu pada suhu 70oC dan waktu 15 menit dengan nilai rendemen 7,52%. Hasil pengukuran analisis SEM terhadap ferro oksida rerata dari 3 sampel diperoleh ukuran 39,1 nm.","PeriodicalId":107274,"journal":{"name":"Jurnal Kimia dan Rekayasa","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114211198","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：