Case Studies in Chemical and Environmental Engineering最新文献_第9页

Evaluation of different electrodes in electrocoagulation-flotation process for Chlorella vulgaris harvesting 评估电凝-浮选工艺中用于收获小球藻的不同电极

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-13 DOI: 10.1016/j.cscee.2024.100801

Wahyu Diski Pratama , Hadiyanto Hadiyanto

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Evaluation of germination as pretreatment method to increase methane production: A case study in papaya seed 评估发芽作为增加甲烷产量的预处理方法：木瓜种子案例研究

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-13 DOI: 10.1016/j.cscee.2024.100788

Rita Purwasih , Sutaryo Sutaryo , Endang Purbowati , Agung Purnomoadi

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Effect of agricultural fertilizers on arsenic leaching from sediment under aerobic conditions 有氧条件下农业化肥对沉积物砷沥滤的影响

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-11 DOI: 10.1016/j.cscee.2024.100794

Md Abul Hashem , Md. Aminur Rahman , Mehedi Hasan , Md Abdul Momen , Quazi Farjana Lamia , Md Sahariar Sahen , Modinatul Maoya

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In-situ synthesis of hydroxyapatite-supported Ag3PO4 using cockle (Anadara granosa) shell as photocatalyst in rhodamine B photodegradation and antibacterial agent 利用毛蚶（Anadara granosa）壳作为光催化剂原位合成羟基磷灰石支撑的 Ag3PO4，用于罗丹明 B 的光降解和抗菌剂

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-11 DOI: 10.1016/j.cscee.2024.100797

Is Fatimah , Rahmania Audita , Gani Purwiandono , Habibi Hidayat , Suresh Sagadevan , Won-Chun Oh , Ruey-an Doong

{"title":"In-situ synthesis of hydroxyapatite-supported Ag3PO4 using cockle (Anadara granosa) shell as photocatalyst in rhodamine B photodegradation and antibacterial agent","authors":"Is Fatimah , Rahmania Audita , Gani Purwiandono , Habibi Hidayat , Suresh Sagadevan , Won-Chun Oh , Ruey-an Doong","doi":"10.1016/j.cscee.2024.100797","DOIUrl":"https://doi.org/10.1016/j.cscee.2024.100797","url":null,"abstract":"<div>A nanocomposite of hydroxyapatite-supported Ag3PO4 (Ag3PO4/HA) was prepared by in-situ co-precipitation followed by hydrothermal method by utilizing cockle (Anadara granosa) shell as biogenic calcium source. The obtained nanocomposite was characterized by different instrumental analyses. X-ray diffraction spectroscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy analyses confirmed the formation of dispersed Ag3PO4 on HA structure with the particles size ranging at 10–40 nm. The material has band gap energy of 2.3 eV which support the activity as photocatalyst for rhodamine B degradation. The removal efficiency of 99.87% was expressed by the nanocomposite for 120 min of treatment, and reusability was demonstrated by insignificant change of the removal and kinetics constant for 5 cycles. The nanocomposite showed antibacterial activity against E. Coli, S. aureus, K. Pneumonia, and S. pyogenes.</div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"10 ","pages":"Article 100797"},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666016424001919/pdfft?md5=8ea467035aefc1b340298efd9b13c58f&pid=1-s2.0-S2666016424001919-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141307938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Investigation of a novel biocide material for biocorrosion in simulated seawater: A case study on Tinospora cordifolia extract 模拟海水中生物腐蚀的新型杀菌材料研究：天竺葵提取物案例研究

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-11 DOI: 10.1016/j.cscee.2024.100795

Ahmad Royani , Muhammad Hanafi , Victor Sunday Aigbodion , Muhammad Eka Prastya , Chandrabhan Verma , Nabisab Mujawar Mubarak , Akram Alfantazi , Azwar Manaf

{"title":"Investigation of a novel biocide material for biocorrosion in simulated seawater: A case study on Tinospora cordifolia extract","authors":"Ahmad Royani , Muhammad Hanafi , Victor Sunday Aigbodion , Muhammad Eka Prastya , Chandrabhan Verma , Nabisab Mujawar Mubarak , Akram Alfantazi , Azwar Manaf","doi":"10.1016/j.cscee.2024.100795","DOIUrl":"10.1016/j.cscee.2024.100795","url":null,"abstract":"<div>This case report investigates the preventive effect of Tinospora cordifolia extract on biocorrosion induced by Pseudomonas aeruginosa on mild steel API 5L in the simulated seawater medium. Electrochemical techniques, spectroscopic techniques, and surface analysis were employed to investigate biocide performance and corrosion behavior. P. aeruginosa has been shown to enhance iron dissolution in seawater medium. These findings point to the role of P. aeruginosa bacteria in forming differential oxygen, which causes corrosion. Morphology results from atomic Fourier microscopy (AFM) highlight the presence of P. aeruginosa in biotic environments, where the surface is rougher than in abiotic conditions. On the other hand, adding T. cordifolia to the biotic medium resulted in a smoother and more homogeneous surface without any significant deterioration. Electrochemical findings reveal that adding 300 mg L−1 of T. cordifolia extract prevents the microbiologically influenced corrosion (MIC) of steel API 5L, with an optimum effectiveness value of 74.50 % after 21 days of incubation. This protective effect is caused by forming a more compact iron oxide surface layer and the adsorption of phenolic active compounds such as Moupinamide and others on the surface of mild steel API 5L, as detected by liquid chromatography-mass/spectrometry-mass spectrometry (LCMS-MS), Fourier-transform infrared spectroscopy (FTIR) and field emission scanning electron microscopy (FE-SEM) techniques.</div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"10 ","pages":"Article 100795"},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666016424001890/pdfft?md5=a7adbb033746ce04676c54b16f2614c1&pid=1-s2.0-S2666016424001890-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141404065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Development and optimization of a neural network model using genetic algorithm to predict the performance of a packed bed reactor treating sulphate-rich wastewater 利用遗传算法开发和优化神经网络模型，以预测处理富含硫酸盐废水的填料床反应器的性能

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-10 DOI: 10.1016/j.cscee.2024.100793

Manoj Kumar , Rohil Saraf , Shishir Kumar Behera , Raja Das , Mansi Aliveli , Arindam Sinharoy , Eldon R. Rene , Ravi Krishnaiah , Kannan Pakshirajan

{"title":"Development and optimization of a neural network model using genetic algorithm to predict the performance of a packed bed reactor treating sulphate-rich wastewater","authors":"Manoj Kumar , Rohil Saraf , Shishir Kumar Behera , Raja Das , Mansi Aliveli , Arindam Sinharoy , Eldon R. Rene , Ravi Krishnaiah , Kannan Pakshirajan","doi":"10.1016/j.cscee.2024.100793","DOIUrl":"10.1016/j.cscee.2024.100793","url":null,"abstract":"<div>The performance of a packed bed reactor (PBR) containing immobilized sulphate reducing bacteria for sulphate removal from wastewater, utilizing carbon monoxide (CO) as the sole electron donor, is demonstrated. The performance of the PBR system in terms of CO and sulphate removal efficiencies (%RECO and %REsulphate, respectively) was predicted using three parameters, i.e. the hydraulic retention time (HRT, h), inlet concentrations of CO (ICCO, mg/L) and sulphate (ICsulphate, mg/L). An artificial neural network (ANN) model with 3-14-2 topology was developed by training the experimental data through the Levenberg Marquardt (LM) algorithm. Using genetic algorithm (GA) with appropriate objective functions, optimal sets of inputs were obtained to ensure maximum RE at a minimum HRT. The ANN had an overall accuracy above 98%, with a correlation coefficient of 0.99 and a root mean square error of 1.66%, suggesting its good performance. The automation of sulphate-rich wastewater industry through GA identified solutions might be leveraged for efficient operation in terms of saving time and resources.</div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"10 ","pages":"Article 100793"},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666016424001877/pdfft?md5=65011006b61a384ee48bd855ac86908c&pid=1-s2.0-S2666016424001877-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141408478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Soil quality index and patchouli yields on various cropping systems in Aceh province, Indonesia: Case study in Aceh Barat Regency 印度尼西亚亚齐省不同种植系统的土壤质量指数和广藿香产量：亚齐巴拉特地区的案例研究

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-10 DOI: 10.1016/j.cscee.2024.100798

Khairun Nisa , Sufardi Sufardi , Muhammad Rusdi , Indra Indra

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Initial mechanical properties of orange peel waste as raw material for vegan leather production 作为素皮生产原料的橘皮废料的初始机械性能

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-08 DOI: 10.1016/j.cscee.2024.100786

Dino Rimantho , Laela Chaerani , Anggina Sandy Sundari

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Assessment of the crystallochemical properties of the natural and modified clays in the organic matter removal during the water treatment process 评估天然粘土和改性粘土在水处理过程中去除有机物的结晶化学特性

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-07 DOI: 10.1016/j.cscee.2024.100787

Chrisdel Chancelice Ndjeumi , Phylemon Ze Bilo'o , Ghislain Arnaud Mouthe Anombogo , Andrada Sanda Maicaneanu , Joseph Marie Sieliechi , Richard Kamga

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Optimized utilization of spent bleaching earth to enhance economic performance of integrated biodiesel-cooking oil plants 优化利用漂白废土，提高生物柴油-烹调油综合工厂的经济效益

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-06 DOI: 10.1016/j.cscee.2024.100784

Adiarso Adiarso , Erwan Hermawan , Ai Nelly , Danis E.P. Wicaksana , R. Agung Wijono , Ayu Lydi Ferabianie , Hari Setiawan , Sigit Setiadi , Ermawan D. Setiyadi , Lenggogeni , Sunartono , Ari Marsudi , Yanti R. Dewi , Saparudin , Isyalia D. Handayani , Kaseno Kaseno

{"title":"Optimized utilization of spent bleaching earth to enhance economic performance of integrated biodiesel-cooking oil plants","authors":"Adiarso Adiarso , Erwan Hermawan , Ai Nelly , Danis E.P. Wicaksana , R. Agung Wijono , Ayu Lydi Ferabianie , Hari Setiawan , Sigit Setiadi , Ermawan D. Setiyadi , Lenggogeni , Sunartono , Ari Marsudi , Yanti R. Dewi , Saparudin , Isyalia D. Handayani , Kaseno Kaseno","doi":"10.1016/j.cscee.2024.100784","DOIUrl":"https://doi.org/10.1016/j.cscee.2024.100784","url":null,"abstract":"<div>Spent bleaching earth (SBE) waste generated from crude palm oil (CPO) processing companies is constantly increasing as the demand for the oleo product is rising worldwide. This study aims to assess oil recovery from SBE using two process options to be implemented in a cooking oil plant in Sei Mangkei, North Sumatra. A techno-economic simulation was conducted to assess the feasibility of the two scenarios. The first scenario of the oil recovery plant from SBE was proposed without bleaching earth (BE) recovery. The second scenario proposed both oil and BE recovery. The research results showed that both scenarios were feasible, with scenario 2 having slightly better economic parameters. The SBE volume processed by the company was far more significant in affecting the feasibility of SBE reutilization. According to the techno-economic calculations, in scenario 1, the internal rate of return (IRR) was 23.56 %, the net present value (NPV) was USD 2.6 million, and the payback period was 3.9 years. Scenario 2 exhibited an IRR of 25.21 %, an NPV of USD 3.375 million, and a return time of 3.7 years.</div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"10 ","pages":"Article 100784"},"PeriodicalIF":0.0,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666016424001786/pdfft?md5=f18e553610fe27d7faca7dfd7dc90b92&pid=1-s2.0-S2666016424001786-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141294666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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