{"title":"Analisis Performa Persentase Stripping dan Efisiensi Panas Stripper (DA-101) pada Unit Sintesa Urea PUSRI-II B","authors":"Enggal Nurisman, Merlinda Ariesty Putri, Mayang Bidari","doi":"10.33536/jcpe.v7i2.1197","DOIUrl":"https://doi.org/10.33536/jcpe.v7i2.1197","url":null,"abstract":"","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75501202","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}
Coal reserves as a non-renewable energy resource are running low. To reduce the coal consumption, the present study carried out blending of coal and renewable energy resource from biomass such as corncob. In this study, we observed the effect of blending ratios of corncob to coal in order to establish the recommended blending ratio that meets the requirement of the industry and power plant. The quality parameters observed from the mixture of coal and corncob were calorific value and sulfur content. The coal used in this research has the heating value of 8403 cal / gram and the sulfur content of 0.71%. Meanwhile, the corncob has the calorific value of 3409.64 cal / gram and the sulfur content of 0.14%. The results showed that the best blending ratio of corncob to coal was 75%,
煤炭作为一种不可再生能源，其储量正在逐渐减少。为了减少煤炭的消耗，本研究将煤炭与玉米芯等生物质可再生能源混合使用。在本研究中，我们观察了玉米芯与煤的配合比的影响，以建立符合工业和发电厂要求的推荐配合比。从煤和玉米芯混合物中观察到的质量参数是热值和硫含量。本研究用煤的热值为8403卡/克，含硫量为0.71%。玉米芯的发热量为3409.64 cal / g，含硫量为0.14%。结果表明，玉米芯与煤的最佳配比为75%;
{"title":"Blending Batubara Dengan Limbah Biomassa Tongkol Jagung Untuk Mengurangi Ketergantungan Sumber Energi Tidak Terbarukan","authors":"Syukrika Putri, Takdir Syarif, Andi Aladin","doi":"10.33536/jcpe.v7i2.807","DOIUrl":"https://doi.org/10.33536/jcpe.v7i2.807","url":null,"abstract":"Coal reserves as a non-renewable energy resource are running low. To reduce the coal consumption, the present study carried out blending of coal and renewable energy resource from biomass such as corncob. In this study, we observed the effect of blending ratios of corncob to coal in order to establish the recommended blending ratio that meets the requirement of the industry and power plant. The quality parameters observed from the mixture of coal and corncob were calorific value and sulfur content. The coal used in this research has the heating value of 8403 cal / gram and the sulfur content of 0.71%. Meanwhile, the corncob has the calorific value of 3409.64 cal / gram and the sulfur content of 0.14%. The results showed that the best blending ratio of corncob to coal was 75%,","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74832744","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}
Cumene is a very important petrochemical commodity, mainly to produce phenol and acetone. The overall growth rate for cumene capacity has been healthy, averaging slightly less than 3.5 % per year to reach 18 million metric tons per year in 2017. The purpose of this study is to generate a steady-state process simulation using ASPEN HYSYS version 10 to produce a small capacity of 10 ton/h of cumene with 99.99 wt % product purity. An alkylation reaction of benzene with propylene is carried out for producing cumene by using a zeolites catalyst as modeled by Badger technology. Transalkylation is also integrated into the system for eliminating unwanted products such as p-diisopropyl benzene. The proposed simulation flowsheet provides a good convergence overall result. The preliminary utility consumption obtained from the simulation consists of approximately 0.0418 kton/h of steam, 1.22 kton/h of cooling water, and 450 kW of electrical duty. Optimization is carried out in the simulation by conducting a sensitivity analysis study to find the optimum operating conditions of the alkylation reactor with a dimension of 1.3 m diameter and 4 m of length. The result shows that at an optimum value of B/P molar ratio of 7, reactant temperature of 170 oC, and reactant pressure of 3 MPa, the selectivity of cumene obtained is at a high value of 0.9446, while the percentage conversion of propylene to cumene obtained is at a high value of 99.99 %.
异丙苯是一种重要的石油化工产品，主要生产苯酚和丙酮。异丙苯产能的总体增长率一直很健康，平均每年略低于3.5%，2017年达到1800万吨/年。本研究的目的是使用ASPEN HYSYS version 10进行稳态过程模拟，以生产10吨/小时的小产能，产品纯度为99.99%。采用獾技术模拟的沸石催化剂，进行了苯与丙烯的烷基化反应制备异丙烯。转烷基化也集成到系统中，以消除不需要的产品，如对二异丙基苯。所提出的仿真流程具有较好的收敛性。从模拟中获得的初步公用事业消耗包括大约0.0418千吨/小时的蒸汽，1.22千吨/小时的冷却水和450千瓦的电力负荷。通过灵敏度分析研究，对直径为1.3 m、长度为4m的烷基化反应器进行优化。结果表明，在最佳B/P摩尔比为7、反应温度为170℃、反应压力为3 MPa时，丙烯对异丙烯的选择性最高为0.9446，丙烯对异丙烯的转化率最高为99.99%。
{"title":"Process Simulation & Sensitvity Analysis of Cumene Production from an Integrated Alkylation and Transalkylation Reaction","authors":"Hilman Ali Hazmi","doi":"10.33536/jcpe.v7i2.1086","DOIUrl":"https://doi.org/10.33536/jcpe.v7i2.1086","url":null,"abstract":"Cumene is a very important petrochemical commodity, mainly to produce phenol and acetone. The overall growth rate for cumene capacity has been healthy, averaging slightly less than 3.5 % per year to reach 18 million metric tons per year in 2017. The purpose of this study is to generate a steady-state process simulation using ASPEN HYSYS version 10 to produce a small capacity of 10 ton/h of cumene with 99.99 wt % product purity. An alkylation reaction of benzene with propylene is carried out for producing cumene by using a zeolites catalyst as modeled by Badger technology. Transalkylation is also integrated into the system for eliminating unwanted products such as p-diisopropyl benzene. The proposed simulation flowsheet provides a good convergence overall result. The preliminary utility consumption obtained from the simulation consists of approximately 0.0418 kton/h of steam, 1.22 kton/h of cooling water, and 450 kW of electrical duty. Optimization is carried out in the simulation by conducting a sensitivity analysis study to find the optimum operating conditions of the alkylation reactor with a dimension of 1.3 m diameter and 4 m of length. The result shows that at an optimum value of B/P molar ratio of 7, reactant temperature of 170 oC, and reactant pressure of 3 MPa, the selectivity of cumene obtained is at a high value of 0.9446, while the percentage conversion of propylene to cumene obtained is at a high value of 99.99 %.","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83376766","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}
R. Rasyid, Alda Titania Dewanti, Rahmaniah Malik, Anshariah Anshariah, Ruslan Kalla
{"title":"Perengkahan Katalitik Distilat Asam Lemak Minyak Sawit (DALMs) menggunakan Katalis HCl Berpenyangga Gamma Alumina","authors":"R. Rasyid, Alda Titania Dewanti, Rahmaniah Malik, Anshariah Anshariah, Ruslan Kalla","doi":"10.33536/jcpe.v7i2.1401","DOIUrl":"https://doi.org/10.33536/jcpe.v7i2.1401","url":null,"abstract":"","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"214 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74159681","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":"Pengaruh Variasi Sumber Nitrogen pada Produksi Selulosa Bakteri dari Limbah Kulit Pisang","authors":"J. R. H. Panjaitan, Adhitia Wibowo","doi":"10.33536/jcpe.v7i2.1223","DOIUrl":"https://doi.org/10.33536/jcpe.v7i2.1223","url":null,"abstract":"","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86475830","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":"Pirolisis Katalitik Minyak Pelumas Bekas Menjadi Bahan Bakar Cair Menggunakan Zeolit Alam","authors":"Reno Fitriyanti, Muhrinsyah Fatimura, Rully Masriatini","doi":"10.33536/jcpe.v7i2.973","DOIUrl":"https://doi.org/10.33536/jcpe.v7i2.973","url":null,"abstract":"10%(w/w","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"102 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75761382","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}
Lukhi Mulia Shitophyta, Masreza Hari Darmawan, Yestri Rusfidiantoni
Sumber energi terbarukan perlu terus dikembangkan untuk menekan ketersediaan bahan bakar fosil yang sudah semakin menipis. Biogas merupakan salah satu energi alternatif dengan memanfaatkan limbah organik seperti kotoran sapi. Pengolahan kotoran sapi sebagai bahan baku biogas dapat menggunakan biodigester tipe kontinyu dan tipe batch. Biodigester kontinyu selalu berisi 80% umpan dari volume total (50 liter) dan 20% sisanya sebagai ruang gas. Biodigester tipe batch kapasitas 220 liter memiliki komposisi kotoran sapi dan rumput gajah sebesar 25 kg : 25 kg dengan penambahan air 100 liter. Produksi biogas dilakukan selama 70 hari. Hasil penelitian menunjukkan bahwa biodigester kontinyu menghasilkan volume biogas total 17.520 ml dan kandungan CH4 51,37%, sedangkan untuk biodigester batch menghasilkan volume biogas total 66.484 ml dan kandungan CH4 31,37%. Uji nyala untuk biodigester kontinyu menunjukkan bahwa setelah hari ke-12 nyala api berwarna biru dan menyembur cukup kuat pada saat katup pengaturan gas dibuka dan dikenakan api, tetapi pada biodigester batch tidak menghasilkan nyala api karena kadar CH4 kurang dari 45%. Biodigester tipe kontinyu dengan kapasitas 50 L menghasilkan volume biogas lebih tinggi dibandingkan dengan tipe batch yang berkapasitas 220 liter
{"title":"Produksi Biogas dari Kotoran Sapi dengan Biodigester Kontinyu dan Batch: Review","authors":"Lukhi Mulia Shitophyta, Masreza Hari Darmawan, Yestri Rusfidiantoni","doi":"10.33536/jcpe.v7i2.903","DOIUrl":"https://doi.org/10.33536/jcpe.v7i2.903","url":null,"abstract":"Sumber energi terbarukan perlu terus dikembangkan untuk menekan ketersediaan bahan bakar fosil yang sudah semakin menipis. Biogas merupakan salah satu energi alternatif dengan memanfaatkan limbah organik seperti kotoran sapi. Pengolahan kotoran sapi sebagai bahan baku biogas dapat menggunakan biodigester tipe kontinyu dan tipe batch. Biodigester kontinyu selalu berisi 80% umpan dari volume total (50 liter) dan 20% sisanya sebagai ruang gas. Biodigester tipe batch kapasitas 220 liter memiliki komposisi kotoran sapi dan rumput gajah sebesar 25 kg : 25 kg dengan penambahan air 100 liter. Produksi biogas dilakukan selama 70 hari. Hasil penelitian menunjukkan bahwa biodigester kontinyu menghasilkan volume biogas total 17.520 ml dan kandungan CH4 51,37%, sedangkan untuk biodigester batch menghasilkan volume biogas total 66.484 ml dan kandungan CH4 31,37%. Uji nyala untuk biodigester kontinyu menunjukkan bahwa setelah hari ke-12 nyala api berwarna biru dan menyembur cukup kuat pada saat katup pengaturan gas dibuka dan dikenakan api, tetapi pada biodigester batch tidak menghasilkan nyala api karena kadar CH4 kurang dari 45%. Biodigester tipe kontinyu dengan kapasitas 50 L menghasilkan volume biogas lebih tinggi dibandingkan dengan tipe batch yang berkapasitas 220 liter","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"225 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91451274","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 benefit of blood shell waste include being used as a catalyst for biodiesel production. This research aims at finding the characteristics of catalysts made of Journal of Chemical Process Engineering e-ISSN Number 2655 2967 9 the blood clamshells. The research applies the methods of esterification and Transesterification by using the microwave and the used cooking oil. The result of the research indicates that (1) based on the XRD analysis results it is known that the main peak of the angle phase of 30 in 34.10 degree shows that the obtained compound is the Hydroxide Calcium (Ca(OH)2) . Besides that the peak of angle diffraction of 2θ on 64.20 ̊ indicates the existence of a calcium oxide compound. The result of SEM points out the shells of the blood clams as the result of calcination have an ununiformed shapes and some of them are aggregated based on the Sherrer equation which produces average crystal sizes of 23.77 nm. The biodiesel fuel produced through the process of blood clamshell catalyst contains the density of 0.89 g/ml, viscosity of 4.05 mm /s, acid density of 0.21 Mg KOH/g and total glycerol as much as 0.27%. The mass with maximum time of biodiesel production is on the minute of 15 with 3%wt/wt of concentration with the oil moll and methanol ration of 1:12.
血壳废物的好处包括可以用作生物柴油生产的催化剂。本研究的目的是找出血蛤壳制备的催化剂的特性。本研究采用微波和废食用油酯化法和酯交换法。研究结果表明:(1)根据XRD分析结果可知，34.10度角相30的主峰表明所得化合物为氢氧化钙(Ca(OH)2)。2θ角衍射峰位于64.20°，表明存在氧化钙化合物。扫描电镜结果表明，经煅烧后的血蛤壳形状不均匀，部分壳根据Sherrer方程聚集在一起，平均晶粒尺寸为23.77 nm。该工艺制备的生物柴油燃料密度为0.89 g/ml，粘度为4.05 mm /s，酸密度为0.21 Mg KOH/g，总甘油高达0.27%。在油脂和甲醇比为1:12的条件下，以3%wt/wt的浓度，在15分钟内生产生物柴油的最佳质量。
{"title":"PreparasiI Katalis Nanomaterial dari Cangkang Kerang Darah (Anadara Granosa Linn) untuk Pembuatan Biodiesel dari Minyak Jelantah dengan Menggunakan Microwave","authors":"Ardiansah Ardiansah, Hermin Hardyanti Utami, Shokhul Lutfi, Cherly Firdharini","doi":"10.33536/jcpe.v7i1.1034","DOIUrl":"https://doi.org/10.33536/jcpe.v7i1.1034","url":null,"abstract":"The benefit of blood shell waste include being used as a catalyst for biodiesel production. This research aims at finding the characteristics of catalysts made of Journal of Chemical Process Engineering e-ISSN Number 2655 2967 9 the blood clamshells. The research applies the methods of esterification and Transesterification by using the microwave and the used cooking oil. The result of the research indicates that (1) based on the XRD analysis results it is known that the main peak of the angle phase of 30 in 34.10 degree shows that the obtained compound is the Hydroxide Calcium (Ca(OH)2) . Besides that the peak of angle diffraction of 2θ on 64.20 ̊ indicates the existence of a calcium oxide compound. The result of SEM points out the shells of the blood clams as the result of calcination have an ununiformed shapes and some of them are aggregated based on the Sherrer equation which produces average crystal sizes of 23.77 nm. The biodiesel fuel produced through the process of blood clamshell catalyst contains the density of 0.89 g/ml, viscosity of 4.05 mm /s, acid density of 0.21 Mg KOH/g and total glycerol as much as 0.27%. The mass with maximum time of biodiesel production is on the minute of 15 with 3%wt/wt of concentration with the oil moll and methanol ration of 1:12.","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"81 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74852360","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}
If the growth demand of fetrtilizer is constant at 3% per year, the remaining accessible phosphate reserves from phosphate minerals will run out in about 50 years. The simplest way to help it last longer is by reducing the use of phosphate. However, there is an alternative for saving phosphate reserves, by recovering phosphate which has another advantage of eutrophication. Struvite is an optimal mineral phosphate recovery and works Journal of Chemical Process Engineering e-ISSN Number 2655 2967 34 as a slow release fertilizer. The manufacture of struvite in this study was carried out by reacting the extraction results of dolomite (Mg3(PO4)2) and Ammonium Hydroxide (NH4OH). The MAP ratio variation is 1:1:1, 1.5:1:1, 2:1:1, 2.5:1:1 and 3:1:1. The addition of NaOH with various concentrations is operated to obtain a various pH, such as 7, 8, 9, 10, and 11. In the aeration method, the air flow rate is needed and we use 1L/min In phosphate recovery aeration is needed for the stirring process in the solution. We use X-ray Fluorescence (XRF) test in this research, so we know the highest phosphate mineral content in the formation of struvite. The highest phosphate recovery was obtained at a MAP ratio of 2.5: 1: 1 with a pH of 9. The result of phosphate recovery obtained was 84.3%, according to SNI 02-3776-2005 the P content in the struvite fertilizer produced in this study has good level of quality. PENDAHULUAN Mineral fosfat merupakan sumber daya mineral yang tidak terbarukan, dan tidak dapat diganti. Konsumsi fosfat dunia yang progresif diperkirakan akan memberi lebih banyak tekanan pada penurunan persediaan fosfat. Sisa cadangan fosfat yang dapat diakses dari mineral fosfat diperkirakan akan habis dalam 50 tahun, jika pertumbuhan permintaan pupuk tetap 3% per tahun. Mengurangi penggunaan fosfat secara berlebihan, akan membantu cadangan fosfat bertahan lebih lama. Adapun alternatif untuk menghemat cadangan fosfat adalah dengan recovery fosfat, yang memiliki keuntungan tambahan untuk meminimalkan eutrofikasi. Struvite merupakan recovery mineral fosfat yang optimal dan berfungsi sebagai pupuk lepas lambat. [1] Struvite merupakan kristal putih dan dikenal dengan nama kimia magnesium amonium fosfat (MAP) dengan rumus kimia yaitu MgNH4PO4.6H2O. Pembentukan Struvite dilakukan dengan mereaksikan Mg, NH4 + dan PO4 . [2] Recovery fosfat sebagai struvite, memanfaatkan magnesium fosfat dari hasil ekstraksi dolomit sebagai bahan baku. Diperoleh hasil analisa magnesium fosfat pada ekstraksi dolomit sebesar 9,78% Mg dan 22,37% PO4. Reaksi dalam pembentukan struvite yaitu sebagai berikut, [3]: Mg+NH4 +PO4 +6 H2O→MgNH4PO4.6H2O + H + (1) Berdasarkan keprihatinan terhadap kelangkaan fosfat di dunia, sehingga banyak dilakukan penelitian dalam menciptakan alternatif baru. Hal ini didukung dengan penelitian yang telah dilakukan, [4] menunjukkan bahwa effisiensi recovery PO4 sangat dipengaruhi oleh pH larutan, dan effesiensi mencapai nilai maksimum pada pH 9. Effisiensi reco
如果化肥需求以每年3%的速度增长，磷矿中剩余的可开采磷酸盐储量将在50年左右耗尽。最简单的方法就是减少磷酸盐的使用。然而，有一种节省磷酸盐储备的替代方法，即回收磷酸盐，这具有富营养化的另一个优点。鸟粪石是一种最佳的磷酸盐回收矿物，是一种缓释肥料。化学过程工程e-ISSN号2655 2967 34。本研究以白云石(Mg3(PO4)2)和氢氧化铵(NH4OH)的萃取结果为原料制备鸟粪石。MAP比值变化为1:1:1、1.5:1:1、2:1:1、2.5:1:1和3:1:1。加入不同浓度的氢氧化钠可以得到不同的pH值，如7、8、9、10和11。在曝气法中，需要空气流速，我们使用1L/min。在磷酸盐回收中，溶液的搅拌过程需要曝气。本研究采用x射线荧光(XRF)测试，从而了解鸟粪石形成中磷酸盐矿物含量最高的部分。在MAP比为2.5:1:1、pH为9时，磷酸盐回收率最高。磷酸盐回收率为84.3%，根据SNI 02-3776-2005，本研究生产的鸟粪石肥中磷含量具有较好的质量水平。PENDAHULUAN Mineral fosfat merupakan sumber daya Mineral yang tidak terbarukan, dan tidak dapat diganti。Konsumsi fosfat dunia yang progressive diperkirakan akan memberi lebih banyak tekanan pada penurunan perpersaan fofat。Sisa cadangan fosfat yang dapat dipakirakan akan habis dalam 50 tahun, jika pertumbuhan permintaan pupuk tetap每tahun 3%。蒙古兰吉彭古纳安，阿肯巴巴多斯，阿肯巴巴多斯，阿肯巴巴多斯。自适应替代原料原料，原料原料，原料原料，原料原料，原料原料，原料原料，原料原料。鸟粪石merupakan回收矿物fofat yang最优dan berfunsi sebagai pupuk lepas lambat。[1][参考文献]鸟粪石merupakan晶体putih与dan dikenal dengan nama kimia magnesium amonium fofat (MAP) dengan rumus kimia yaitu MgNH4PO4.6H2O。]镁，NH4 +和PO4。[2]刘建军，刘建军，刘建军，等。本文分析了含镁磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷磷Reaksi dalam pembentukan struvite yitu sebagai berikut， [3]: Mg+NH4 +PO4 + 6h2o→MgNH4PO4.6H2O + H + (1) Berdasarkan keprihatinan terhadap kelangkaan fosfat di dunia, sehinga banyak dilakukan penelitian dalam menciptakan alternatifbaru。[4][参考文献]halini didukung dengan penelitian yang telah dilakukan, menunjukkan bahwa effisiensi recovery PO4 sangat dipengaruhi oleh pH larutan, dan effesiensi menencapai nilai maksimum pada pH 9。高效回收率PO4 paada penelitian ini mengalami peningkatan dari 52.36% ingga 83.6% dengan meningkatnya pH larutan dari 7 sampai 9, dan Effisiensi回收率PO4 terbaik diamati padph 9 dengan hasil efisiensi回收率PO4 sebesar 84%。Adapun untuk menggetahui nilai recovery fofat yang dihasilkan dapat dihitung menggunakan rumus[17]: %回收率= x1 x2 x 100% ......................(2) Keterangan: x1 = Kadar sampel yang diperoleh x2 = Kadar yang sebenarya Faktor palting yang akan berpengaruh dalam prostpenbentukan鸟粪石yitu pH (derajat kebasaan) yang sangat berpengaruh dalam kelarutan。Penelitian yang mendukung pengaruh pH dalam pembentukan鸟粪石sehinga didapatkan pupuk鸟粪石yang optimal yitu dalam Penelitian yang telah dilakukan， [5] untuk pH yang didapatkan hasil鸟粪石yang terbaik berada padkisaran antara pH 9,5-10,5。Sedangkan menurut penelitian [6]， pada pH 7和8 pembentukan矿物鸟粪石dapat dikatakan tidak optimal, diperoleh pH terbaik dalam pembentukan鸟粪石adalah pH 9。Sedangkan矿物鸟粪石mengalami penurunan kandungan pada pH 10丹11,karena meningkatnya jumlah杂质yang terbentuk pada pH tinggi。Hasil回收fofat tertingi dipengarui olio molar MAP。登安比磨牙Mg阳砂maka除磷阳砂dihasilkan juga semakin砂。镁离子对鸟粪石的影响。离子镁的研究进展[j]。[5] Penelitian [7] mengungkapkan bahwa kondisi optimum dalam pembentukan矿物鸟粪石dari limbah cair industry pupuk ZA adalah padperbandingan konsentrasi比例摩尔[Mg]: [NH4]: [PO4] adalah 2,5:1: 1。Sedangkan pembentukan鸟粪石secara teoritis skokiometri membutuhkan比例最小摩尔
{"title":"Recovery Fosfat Pada Hasil Ekstraksi Dolomit Sebagai Mineral Struvite Dengan Metode Aerasi","authors":"Rafiqa Falah, Maria Rizky Fauziah, L. Edahwati","doi":"10.33536/jcpe.v7i1.1141","DOIUrl":"https://doi.org/10.33536/jcpe.v7i1.1141","url":null,"abstract":"If the growth demand of fetrtilizer is constant at 3% per year, the remaining accessible phosphate reserves from phosphate minerals will run out in about 50 years. The simplest way to help it last longer is by reducing the use of phosphate. However, there is an alternative for saving phosphate reserves, by recovering phosphate which has another advantage of eutrophication. Struvite is an optimal mineral phosphate recovery and works Journal of Chemical Process Engineering e-ISSN Number 2655 2967 34 as a slow release fertilizer. The manufacture of struvite in this study was carried out by reacting the extraction results of dolomite (Mg3(PO4)2) and Ammonium Hydroxide (NH4OH). The MAP ratio variation is 1:1:1, 1.5:1:1, 2:1:1, 2.5:1:1 and 3:1:1. The addition of NaOH with various concentrations is operated to obtain a various pH, such as 7, 8, 9, 10, and 11. In the aeration method, the air flow rate is needed and we use 1L/min In phosphate recovery aeration is needed for the stirring process in the solution. We use X-ray Fluorescence (XRF) test in this research, so we know the highest phosphate mineral content in the formation of struvite. The highest phosphate recovery was obtained at a MAP ratio of 2.5: 1: 1 with a pH of 9. The result of phosphate recovery obtained was 84.3%, according to SNI 02-3776-2005 the P content in the struvite fertilizer produced in this study has good level of quality. PENDAHULUAN Mineral fosfat merupakan sumber daya mineral yang tidak terbarukan, dan tidak dapat diganti. Konsumsi fosfat dunia yang progresif diperkirakan akan memberi lebih banyak tekanan pada penurunan persediaan fosfat. Sisa cadangan fosfat yang dapat diakses dari mineral fosfat diperkirakan akan habis dalam 50 tahun, jika pertumbuhan permintaan pupuk tetap 3% per tahun. Mengurangi penggunaan fosfat secara berlebihan, akan membantu cadangan fosfat bertahan lebih lama. Adapun alternatif untuk menghemat cadangan fosfat adalah dengan recovery fosfat, yang memiliki keuntungan tambahan untuk meminimalkan eutrofikasi. Struvite merupakan recovery mineral fosfat yang optimal dan berfungsi sebagai pupuk lepas lambat. [1] Struvite merupakan kristal putih dan dikenal dengan nama kimia magnesium amonium fosfat (MAP) dengan rumus kimia yaitu MgNH4PO4.6H2O. Pembentukan Struvite dilakukan dengan mereaksikan Mg, NH4 + dan PO4 . [2] Recovery fosfat sebagai struvite, memanfaatkan magnesium fosfat dari hasil ekstraksi dolomit sebagai bahan baku. Diperoleh hasil analisa magnesium fosfat pada ekstraksi dolomit sebesar 9,78% Mg dan 22,37% PO4. Reaksi dalam pembentukan struvite yaitu sebagai berikut, [3]: Mg+NH4 +PO4 +6 H2O→MgNH4PO4.6H2O + H + (1) Berdasarkan keprihatinan terhadap kelangkaan fosfat di dunia, sehingga banyak dilakukan penelitian dalam menciptakan alternatif baru. Hal ini didukung dengan penelitian yang telah dilakukan, [4] menunjukkan bahwa effisiensi recovery PO4 sangat dipengaruhi oleh pH larutan, dan effesiensi mencapai nilai maksimum pada pH 9. Effisiensi reco","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"81 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85950523","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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