Case Studies in Chemical and Environmental Engineering最新文献_第10页

Critical overflow of the main combined sewer in the city of Lviv: A case study of recent extreme flooding 利沃夫市主要联合下水道的严重溢出：最近极端洪水的案例研究

Case Studies in Chemical and Environmental Engineering Pub Date : 2025-12-01 Epub Date: 2025-09-15 DOI: 10.1016/j.cscee.2025.101284

Ivan Matlai, Ihor Popadiuk, Lesya Vovk, Volodymyr Zhuk

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Analysis of land characteristics and erosion impact on Gayo Arabica coffee production 土地特征及侵蚀对加约阿拉比卡咖啡生产的影响分析

Case Studies in Chemical and Environmental Engineering Pub Date : 2025-12-01 Epub Date: 2025-07-08 DOI: 10.1016/j.cscee.2025.101258

Manfarizah Manfarizah , Abubakar Karim , Hairul Basri , Muyassir Muyassir

{"title":"Analysis of land characteristics and erosion impact on Gayo Arabica coffee production","authors":"Manfarizah Manfarizah , Abubakar Karim , Hairul Basri , Muyassir Muyassir","doi":"10.1016/j.cscee.2025.101258","DOIUrl":"10.1016/j.cscee.2025.101258","url":null,"abstract":"<div><div>Land characteristics and erosion are key determinants of Arabica coffee productivity, directly affecting soil quality, land suitability, and long-term sustainability. Land characteristics, including physical and chemical soil properties, determine land suitability, while erosion contributes to land degradation, ultimately reducing productivity. This study investigates the effects of land characteristics and erosion on Arabica coffee yields in the Gayo highlands of Bener Meriah Regency. Field surveys and laboratory soil analyses were conducted using a quantitative descriptive approach across 15 defined land unit types (LUTs), and erosion rates were estimated using the Universal Soil Loss Equation (USLE). Multiple linear regression analysis has been used to analyze the effect of land characteristics and erosion on coffee production. Results revealed that land suitability in the study area falls into two classes: S2 (moderately suitable) and S3 (marginally suitable). Significant yield constraints include low phosphorus availability, limited adequate soil depth, steep slope gradients, and inadequate drainage. Statistically significant variables influencing yield (p < 0.05) included elevation, slope, adequate soil depth, silt and clay percentages, pH, organic carbon, Cation Exchange Capacity, available phosphorus, and erosion rate. These findings highlight the critical role of integrated land management in optimizing Arabica coffee production under varying agroecological conditions.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"12 ","pages":"Article 101258"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144605409","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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Assessing pharmaceuticals and personal care products (PPCPs) and their environmental risk in a lake in North Quebec 评估北魁北克省一个湖泊的药品和个人护理产品及其环境风险

Case Studies in Chemical and Environmental Engineering Pub Date : 2025-12-01 Epub Date: 2025-10-23 DOI: 10.1016/j.cscee.2025.101295

Maryem Chekili , Pratishtha Khurana , Selma Etteieb , Satinder Kaur Brar , Jean-François Blais

{"title":"Assessing pharmaceuticals and personal care products (PPCPs) and their environmental risk in a lake in North Quebec","authors":"Maryem Chekili , Pratishtha Khurana , Selma Etteieb , Satinder Kaur Brar , Jean-François Blais","doi":"10.1016/j.cscee.2025.101295","DOIUrl":"10.1016/j.cscee.2025.101295","url":null,"abstract":"<div><div>This study investigated the occurrence and ecological risks of pharmaceuticals and personal care products (PPCPs) in lake Osisko, northern Quebec, Canada. Ten sites, including storm outfalls and lake stations, were sampled for three summer campaigns. Results showed clear spatial and temporal variation, with storm outfalls acting as major entry points of contaminants into the lake. Among the 11 targeted PPCPs, caffeine, salicylic acid, and methylparaben were most frequently detected in surface water and sediments. Their presence highlights both urban runoff and recreational activities as important pollution sources. Environmental risk assessment revealed that caffeine posed a high risk to aquatic organisms, while ciprofloxacin presented medium risk, and other compounds were classified as low risk when assessed individually. Although some PPCPs are short-lived in the environment, their continuous inputs sustain measurable concentrations that may impact sensitive species. This study provides evidence-based insights for implementing monitoring and pollution control strategies to protect the ecological and recreational functions of Lake Osisko.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"12 ","pages":"Article 101295"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145361015","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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Comparison of porous and non-porous biochar for trimethoprim removal: Quantifying uncertainty in sorption and thermodynamic parameters over different pH and temperature 多孔和非多孔生物炭去除甲氧苄啶的比较：在不同pH和温度下定量吸附和热力学参数的不确定度

Case Studies in Chemical and Environmental Engineering Pub Date : 2025-12-01 Epub Date: 2025-07-18 DOI: 10.1016/j.cscee.2025.101264

Nguyen Thi Phuong Thao , Pham Thi Le Na , Ky-Phuong-Ha Huynh , Bao-Trong Dang

{"title":"Comparison of porous and non-porous biochar for trimethoprim removal: Quantifying uncertainty in sorption and thermodynamic parameters over different pH and temperature","authors":"Nguyen Thi Phuong Thao , Pham Thi Le Na , Ky-Phuong-Ha Huynh , Bao-Trong Dang","doi":"10.1016/j.cscee.2025.101264","DOIUrl":"10.1016/j.cscee.2025.101264","url":null,"abstract":"<div><div>This study conducted a comparative analysis of non-porous (CN400) and porous (CN600) biochar for trimethoprim (TMP) removal under varying pH (3, 7, and 10) and temperature conditions (20, 26, and 32 °C). Bayesian nonlinear regression was used to quantify uncertainty in both adsorption isotherms and derived thermodynamic parameters. The biochar was characterized by yield, point of zero charge, scanning electron microscopy with energy-dispersive X-ray spectroscopy, Fourier-transform infrared spectroscopy, X-ray diffraction, and N<sub>2</sub> adsorption-desorption isotherms. The experimental data were statistically interpreted using the pseudo-second-order, modified intraparticle diffusion, and Langmuir isotherm model. The results showed that the non-porous structure of CN400 had a smaller surface area than that of CN600 (4 vs. 372 m<sup>2</sup> g<sup>−1</sup>, respectively). However, CN400 exhibited a higher sorption capacity (9.44 vs. 3.48 mmol kg<sup>−1</sup>) at pH 7 and 20 °C, and significantly faster sorption kinetics than CN600 (2 vs. 87 min, respectively). Based on frontier molecular orbital theory calculations, TMP sorption onto CN400 was driven by three synergistic mechanisms including electrostatic attraction, hydrogen bonding, and π–π electron donor–acceptor interactions. Interestingly, raising the temperature from 20 to 32 °C resulted in a 1.8-fold increase in <em>Q</em><sub>max</sub> for CN400 and up to a 6.9-fold increase for CN600, attributed to enhanced pore diffusion kinetics at high solution temperatures. Bayesian inference-based thermodynamic analysis confirmed that the TMP sorption process was both spontaneous and exothermic. Our statistical findings suggest that tailoring CN400/CN600 biochar could offer a synergistic strategy to accelerate TMP adsorption and maximize sorption capacity in water treatment systems.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"12 ","pages":"Article 101264"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144680199","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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One-step thermochemical activation of waste wood for micropollutant adsorption: Optimisation via design of experiments 废木材一步热化学活化吸附微污染物：通过实验设计进行优化

Case Studies in Chemical and Environmental Engineering Pub Date : 2025-12-01 Epub Date: 2025-08-09 DOI: 10.1016/j.cscee.2025.101273

D. Bosch , J.O. Back , M. Spruck , A. Hofmann , A. Bockreis

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Enhancement of practical use of natural coagulant, Moringa oleifera extract, by simple purification and optimization of salt concentration 通过简单提纯和盐浓度优化，提高了天然混凝剂辣木提取物的实用性

Case Studies in Chemical and Environmental Engineering Pub Date : 2025-12-01 Epub Date: 2025-11-08 DOI: 10.1016/j.cscee.2025.101301

Thuy Lien Nguyen , Thu Hang Duong , Tien Hiep Cao , Tetsuji Okuda , Thi Viet Nga Tran

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Fuel potential of bio-oil from co-pyrolysis of fresh palm fruit bunches and waste cooking oil sludge: composition, fuel properties, and carbon distribution analysis 新鲜棕榈果束和废烹饪油泥共热解生物油的燃料潜力：组成、燃料特性和碳分布分析

Case Studies in Chemical and Environmental Engineering Pub Date : 2025-12-01 Epub Date: 2025-07-19 DOI: 10.1016/j.cscee.2025.101265

Nathawat Unsomsri , Khanes Chunyok , Watcharapol Pakdee , Phakwan Muncharoenporn , Patchara Koedthong , Sittinun Tawkaew , Songkran Wiriyasart , Sommas Kaewluan

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Purification of oil produced water using ceramic membrane: an experimental and response surface model analysis 陶瓷膜净化采出水的实验及响应面模型分析

Case Studies in Chemical and Environmental Engineering Pub Date : 2025-12-01 Epub Date: 2025-09-27 DOI: 10.1016/j.cscee.2025.101288

Mansour Al-Haddabi , Hari Vuthaluru , Hussein Znad , Mingjie Chen , Mushtaque Ahmed

{"title":"Purification of oil produced water using ceramic membrane: an experimental and response surface model analysis","authors":"Mansour Al-Haddabi , Hari Vuthaluru , Hussein Znad , Mingjie Chen , Mushtaque Ahmed","doi":"10.1016/j.cscee.2025.101288","DOIUrl":"10.1016/j.cscee.2025.101288","url":null,"abstract":"<div><div>The treatment of produced water remains a pressing challenge in the oil and gas sector, given its complex mixture of dispersed oil, dissolved organics, salts, and suspended solids. In this study, we examined the performance of a ceramic α-Al<sub>2</sub>O<sub>3</sub> membrane (50 nm pore size) under cross-flow operation for real produced water, across a practical range of pressures (1.3–7 bar) and temperatures (25–45 °C). Unlike many previous investigations that relied on synthetic emulsions or limited operating windows, this work uniquely combines real-field oily water testing with response surface modeling (RSM) and Sobol sensitivity analysis to disentangle the relative roles of pressure and temperature.</div><div>The membrane achieved oil-in-water (OIW) rejection between 78 % and 99.99 %, reducing concentrations to as low as 0.15 ppm. Turbidity rejection consistently exceeded 96 %, while TOC and COD reductions ranged from 30 to 60 % and 0.36–62 %, respectively. Permeate flux reached up to 150 L m<sup>−2</sup> h<sup>−1</sup>, with apparent permeability values between 150 and 210 L m<sup>−2</sup> h<sup>−1</sup>·bar<sup>−1</sup>, and recovery peaked at 91 %. Sensitivity analysis identified pressure as the dominant operating parameter, whereas temperature introduced competing effects of viscosity reduction and fouling enhancement.</div><div>These results provide evidence that ceramic membranes can offer reliable separation performance for untreated produced water, while the integration of RSM and Sobol analysis delivers a novel quantitative framework for optimizing operating conditions. The study highlights both the opportunities and trade-offs of deploying ceramic membranes at scale, offering insights directly relevant to regulatory compliance and water reuse strategies in oilfield applications.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"12 ","pages":"Article 101288"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219181","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}

引用次数: 0

Understanding the change of nutritional and antioxidant content in purple brown rice grown in rice–shrimp farming systems during green germination process 了解稻虾联种紫糙米青芽过程中营养和抗氧化剂含量的变化

Case Studies in Chemical and Environmental Engineering Pub Date : 2025-12-01 Epub Date: 2025-09-26 DOI: 10.1016/j.cscee.2025.101289

Nguyen Thi Ngoc Giang , Tran Van Khai

{"title":"Understanding the change of nutritional and antioxidant content in purple brown rice grown in rice–shrimp farming systems during green germination process","authors":"Nguyen Thi Ngoc Giang , Tran Van Khai","doi":"10.1016/j.cscee.2025.101289","DOIUrl":"10.1016/j.cscee.2025.101289","url":null,"abstract":"<div><div>This research examined the way germination conditions influence the nutritional and antioxidant profiles of a new purple brown rice variety grown in rice–shrimp farming systems in the Mekong Delta, Vietnam. Response surface methodology was employed to optimize temperature (25–40 °C) and time (18–36 h) for the enhancement of key bioactive components, including γ-aminobutyric acid (GABA), free amino acids, total phenolic content (TPC), and anthocyanins. The findings indicated that germination markedly enhanced GABA levels (up to 0.015 mg/g) and free amino acid concentrations (up to 7.3 mg/g), which can be ascribed to enzymatic activation and stress-induced mechanisms. Anthocyanins, the primary antioxidants in purple rice, significantly decreased, retaining approximately 3 % of their original concentration, likely due to thermal and oxidative sensitivity during soaking and sprouting. The maximum TPC recorded was 37.09 °C for 22.25 h, although it decreased from the original value, suggesting partial degradation compensated by the enzymatic release of bound phenolics. Optimal germination was achieved at 35.2 °C for approximately 26 h, as the optimal condition for achieving a high germination rate (97.93 %), moderate anthocyanin retention (0.091 mg/g), and increased levels of GABA and amino acids. The findings highlight the trade-offs associated with germinating pigmented rice and present a scientifically validated protocol for producing germinated purple rice with enhanced functional value. This study advances the creation of high-value, health-promoting rice products derived from local varieties suited to integrated rice–shrimp ecosystems.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"12 ","pages":"Article 101289"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219182","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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Nanofiltration of contaminated water and wastewater using membrane modules reconfigured from commercial spiral-wound elements 利用商业螺旋缠绕元件重新配置的膜模块对污染水和废水进行纳滤

Case Studies in Chemical and Environmental Engineering Pub Date : 2025-12-01 Epub Date: 2025-09-30 DOI: 10.1016/j.cscee.2025.101290

Sandrine Boivin , Tetsuro Ueyama , Norika Tanaka , Tatsumi Shimono , Naoki Ohkuma , Kyoungsoo Park , Takahiro Fujioka

{"title":"Nanofiltration of contaminated water and wastewater using membrane modules reconfigured from commercial spiral-wound elements","authors":"Sandrine Boivin , Tetsuro Ueyama , Norika Tanaka , Tatsumi Shimono , Naoki Ohkuma , Kyoungsoo Park , Takahiro Fujioka","doi":"10.1016/j.cscee.2025.101290","DOIUrl":"10.1016/j.cscee.2025.101290","url":null,"abstract":"<div><div>Submerged nanofiltration (NF) membrane treatment can be an attractive approach for water purification because advanced drinking water treatment can be performed at a low energy consumption without pre-treatment. This pilot-scale study aimed to evaluate the feasibility of employing flat-sheet NF membrane modules, adapted from commercial 4-inch spiral-wound elements, to scale up the direct NF treatment of polluted water for the first time. The pilot-scale submerged NF systems operated at a transmembrane pressure of approximately 50 kPa, directly filtering municipal secondary-treated wastewater and zoo pond water as feed sources for over 46 and 99 days, respectively. The initial permeate flux for the secondary-treated wastewater effluent was 1.1 L/m<sup>2</sup>h, which was half of the 2.0 L/m<sup>2</sup>h flux for the zoo pond water. This discrepancy is attributed to the high salinity (e.g., high osmotic pressure difference) of the secondary-treated wastewater effluent. Over time, the permeate flux gradually declined due to membrane fouling but eventually stabilized for both feed waters. Despite variations in the quality of the feed water during the experiments, the permeate quality met high water quality standards. This study highlights the potential of direct NF treatment using reconfigured commercial NF membrane modules for sustainable urban water cycle management.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"12 ","pages":"Article 101290"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219183","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}

引用次数: 0