Case Studies in Chemical and Environmental Engineering最新文献

From waste to resource: King coconut biochar as a green adsorbent for bisphenol A removal 从废物到资源：国王椰子生物炭作为一种绿色吸附剂去除双酚a

Case Studies in Chemical and Environmental Engineering Pub Date : 2025-07-23 DOI: 10.1016/j.cscee.2025.101261

Hashinika Matharage , Mahesh Jayaweera , Nilanthi Bandara , Jagath Manatunge , Daham Jayawardana , Janith Dissanayake

{"title":"From waste to resource: King coconut biochar as a green adsorbent for bisphenol A removal","authors":"Hashinika Matharage , Mahesh Jayaweera , Nilanthi Bandara , Jagath Manatunge , Daham Jayawardana , Janith Dissanayake","doi":"10.1016/j.cscee.2025.101261","DOIUrl":"10.1016/j.cscee.2025.101261","url":null,"abstract":"<div><div>The widespread presence of BPA in water bodies poses significant environmental and health concerns, highlighting the need for sustainable and efficient removal technologies. This study presents an innovative approach for BPA remediation using biochar derived from king coconut shells—a readily available agricultural waste and by-product of a popular drink in many parts of Asia. Biochar pyrolyzed at 800 °C exhibited the highest removal efficiency, which was significantly enhanced to 80.1 ± 0.9 % following HCl activation. Further reduction of the particle size from 1.0–4.0 mm to 75–105 μm resulted in complete (100 %) removal of BPA. Batch adsorption experiments revealed optimal removal at pH 3–7, with a dosage of 5.0 g/L and an initial BPA concentration of 100.0 ppm. The adsorption process was best described by the Langmuir isotherm model (R<sup>2</sup> = 0.99), with a maximum capacity of 39.53 mg/g. Kinetic studies demonstrated that the pseudo-second-order model accurately represented the adsorption dynamics, implying chemisorption as the rate-limiting step. Regeneration experiments using ethanol demonstrated the reusability of the adsorbent, maintaining over 79.6 % removal efficiency after five consecutive cycles. These findings highlight the effectiveness of KBC800–HCl as a sustainable and high-performance adsorbent, demonstrating the broader potential of agricultural waste valorization in environmental remediation.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"12 ","pages":"Article 101261"},"PeriodicalIF":0.0,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144704504","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

Bio-composites from Nicotiana tabacum stems waste: Exploring cellulose powder content and its impact on physical, mechanical, and thermal properties 烟草茎废弃物生物复合材料：探索纤维素粉含量及其对物理、机械和热性能的影响

Case Studies in Chemical and Environmental Engineering Pub Date : 2025-07-23 DOI: 10.1016/j.cscee.2025.101262

Nasmi Herlina Sari, Emmy Dyah Sulistyowati, Suteja, Muhammad Zulfadli

{"title":"Bio-composites from Nicotiana tabacum stems waste: Exploring cellulose powder content and its impact on physical, mechanical, and thermal properties","authors":"Nasmi Herlina Sari, Emmy Dyah Sulistyowati, Suteja, Muhammad Zulfadli","doi":"10.1016/j.cscee.2025.101262","DOIUrl":"10.1016/j.cscee.2025.101262","url":null,"abstract":"<div><div><strong>This study aims to develop and evaluate sustainable bio-composites using cellulose powder derived from</strong> <em>Nicotiana tabacum</em> <strong>stem waste, focusing on how varying filler content influences their structural, mechanical, and thermal properties.</strong> The cellulose powder was extracted through 5 % NaOH treatment and incorporated at various weight fractions to form composite formulations: BTN (10/90), BTL (15/85), BTK (20/80), BTI (25/75), BTH (30/70), and BTD (40/60), where the numbers represent the cellulose/resin ratio (% w/w). The composites were fabricated using hot press molding and evaluated for physical, mechanical, and thermal properties. Results showed that increasing cellulose content significantly enhanced performance. The highest tensile strength was achieved at 159.47 ± 11.49 MPa for the BTD composite (40 % cellulose), representing a substantial improvement over lower filler loadings. Flexural strength similarly peaked at 174.92 ± 8.9 MPa, and thermal stability increased, with a decomposition onset near 380 °C. FTIR analysis confirmed the presence of cellulose-related functional groups and improved interfacial bonding, while SEM images revealed reduced voids and better dispersion at higher filler contents. The wear resistance also improved, with the lowest wear rate of 0.073 mm<sup>3</sup>/Nm observed for BTD. These findings underscore the potential of <em>Nicotiana tabacum</em>-based composites as eco-friendly materials for structural and thermal applications.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"12 ","pages":"Article 101262"},"PeriodicalIF":0.0,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144703934","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

Silicone quaterium-22 surfactant as an eco-friendly carbon steel anticorrosive: Assessment of corrosion inhibition properties and ecotoxicity in zebrafish embryos 有机硅季铵盐-22表面活性剂作为环保碳钢防腐材料：斑马鱼胚胎的缓蚀性能和生态毒性评价

Case Studies in Chemical and Environmental Engineering Pub Date : 2025-07-23 DOI: 10.1016/j.cscee.2025.101266

Abdullah A. Shaito , Nadin Younes , Sahar I. Daas , Al-Dana Dosari , Dana Nasrallah , Salma Younes , Mostafa H. Sliem , Aboubakr M. Abdullah , Gheyath K. Nasrallah

引用次数: 0

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 : 2025-07-19 DOI: 10.1016/j.cscee.2025.101265

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

引用次数: 0

Ceramic membranes for winery wastewater management: feasibility study and water reuse potential 陶瓷膜用于酒厂废水管理：可行性研究和水再利用潜力

Case Studies in Chemical and Environmental Engineering Pub Date : 2025-07-19 DOI: 10.1016/j.cscee.2025.101259

Vanessa E. Mendes , Fábio Pereira , Marisa Rio , Carlos V. Miguel , Bruno M. Esteves

{"title":"Ceramic membranes for winery wastewater management: feasibility study and water reuse potential","authors":"Vanessa E. Mendes , Fábio Pereira , Marisa Rio , Carlos V. Miguel , Bruno M. Esteves","doi":"10.1016/j.cscee.2025.101259","DOIUrl":"10.1016/j.cscee.2025.101259","url":null,"abstract":"<div><div>The wine industry faces growing water management challenges due to climate change-induced droughts worldwide. Winery wastewater, with varying organic loads across vintage periods, acidity, phenolic compounds, and trace pesticides, present significant environmental and operational challenges for producers. This study explores winery wastewater reclamation as a sustainable strategy, with ceramic membrane filtration offering a robust and scalable solution. Ultrafiltration (10 nm) was identified at bench-scale as the most effective, reducing chemical oxygen demand by 76 % (from an initial 20–56 mg L<sup>−1</sup>) and eliminating <em>E. coli</em>, meeting Portuguese reuse standards. For small to medium wineries, a compact unit (2.3 m<sup>2</sup> of membrane filtration area) can supply 500 L h<sup>−1</sup> of treated water, meeting daily needs for cleaning operations or irrigating up to 3.4 ha of vineyard or green spaces. By reducing freshwater demand, ceramic membranes contribute to enhanced climate resilience and sustainable water management in the wine sector.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"12 ","pages":"Article 101259"},"PeriodicalIF":0.0,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144680200","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

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 : 2025-07-18 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":"2025-07-18","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}

引用次数: 0

A comprehensive review on life-cycle assessment of concrete using industrial by-products 工业副产物混凝土生命周期评价研究综述

Case Studies in Chemical and Environmental Engineering Pub Date : 2025-07-17 DOI: 10.1016/j.cscee.2025.101260

Balamurali Kanagaraj , N. Anand , U. Johnson Alengaram , R. Samuvel Raj , Eva Lubloy

{"title":"A comprehensive review on life-cycle assessment of concrete using industrial by-products","authors":"Balamurali Kanagaraj , N. Anand , U. Johnson Alengaram , R. Samuvel Raj , Eva Lubloy","doi":"10.1016/j.cscee.2025.101260","DOIUrl":"10.1016/j.cscee.2025.101260","url":null,"abstract":"<div><div>The present study, highlights the life cycle analysis (LCA) of concrete, from material procurement to the final disposal of the final product, after its service life was studied. Two types of concrete, M30, and M50, were employed to compare the sustainability performance with incorporating natural and recycled materials. The recycled material is sourced from the demolished building, which is processed to remove the unwanted debris and obtain quality aggregates ranging from 10 mm to 12.5 mm. The processed recycled aggregates (RA) were replaced with 50 % and 100 % of conventional natural aggregate in the concrete. The greenhouse gas emission (GHG-e) and the embodied energy (EE) of the concrete mix ingredients were analyzed with the concrete production. In comparison with the M30 and M50 grade concrete, nearly, 17 % lower GHG-e was recorded for M30 grade concrete when compared to M50 grade concrete. After the service life of concrete, the GHG-e and EE associated during the demolition, loading, and transportation of demolished material was found to be 4.62 kg-CO<sub>2</sub>/m<sup>3</sup> and 63.67 MJ/m<sup>3</sup>.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"12 ","pages":"Article 101260"},"PeriodicalIF":0.0,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144713652","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

Optimal sizing of stand-alone hybrid energy system for development of rural and remote areas in Saudi Arabia 沙特阿拉伯农村和偏远地区发展单机混合能源系统的最佳规模

Case Studies in Chemical and Environmental Engineering Pub Date : 2025-07-12 DOI: 10.1016/j.cscee.2025.101257

Mubarak Alanazi

{"title":"Optimal sizing of stand-alone hybrid energy system for development of rural and remote areas in Saudi Arabia","authors":"Mubarak Alanazi","doi":"10.1016/j.cscee.2025.101257","DOIUrl":"10.1016/j.cscee.2025.101257","url":null,"abstract":"<div><div>The availability of energy and water, which are required for the activities of the main residents, is essential to the development of rural areas. The demand for power is rising as a result of the ongoing population growth and the desire to develop these isolated locations. However, the adoption of renewable energy sources increased as a result of the scarcity of fossil fuels in these isolated places and the expensive cost of grid extensions. To develop these isolated desert locations, a hybrid renewable energy system (HRES) consisting of a diesel generator (DG), battery (B), wind turbine (WT), and solar panel (PV) is proposed. Battery storage and diesel generators operate as backup supplies in a stand-alone system, working in combination with other hybrid renewable energy system components. The expected electricity demands for ten dwellings in a small rural community in Hafar Al Batin, Saudi Arabia, are provided by this system. The seasonal and daily load curves of the suggested community are assessed. This community needs an electrical load of 53 kW. The optimal hybrid energy system combination for the proposed site is determined using HOMER Software, harmonizing reliability, cost, and minimal use of DG sets. The simulation results indicate that, despite the significant potential of wind and solar energies at the selected site, it was not adequate for an independent wind turbine system and a PV system. Thus, a storage battery or another form of energy conversion, like a diesel generator, is required. The results demonstrated that the cost of energy (COE) produced by the optimal hybrid WT/PV/DG/B system is 0.213 $/kWh. The ideal system comprises 20 kW PV panels, 330 kW WT, 58 kW DG, and 158 batteries, which can meet the electric load. The net present cost (NPC) of this optimal system is $ 628,571. Including a storage capacity is essential in order to minimize how often the DG operates and the number of hours it runs.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"12 ","pages":"Article 101257"},"PeriodicalIF":0.0,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144631992","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

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 : 2025-07-08 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":"2025-07-08","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}

引用次数: 0

Mechanical, environmental, and cost evaluation of concrete using recycled polypropylene 使用再生聚丙烯的混凝土的机械、环境和成本评估

Case Studies in Chemical and Environmental Engineering Pub Date : 2025-07-03 DOI: 10.1016/j.cscee.2025.101255

Ade Okvianti Irlan, Herman Parung, M.W. Tjaronge, Muhammad Akbar Caronge

{"title":"Mechanical, environmental, and cost evaluation of concrete using recycled polypropylene","authors":"Ade Okvianti Irlan, Herman Parung, M.W. Tjaronge, Muhammad Akbar Caronge","doi":"10.1016/j.cscee.2025.101255","DOIUrl":"10.1016/j.cscee.2025.101255","url":null,"abstract":"<div><div>This study investigates the mechanical, environmental and cost of concrete incorporating recycled polypropylene (PP) granules as partial fine aggregate replacement at 0 %, 10 %, 20 %, and 30 %, with water-to-cement (W/C) ratios of 0.45 and 0.55. The addition of PP granules reduced workability and density due to their hydrophobic and lightweight nature, leading to compressive strength reductions of up to 48 % at 30 % PP content. The optimal substitution level was identified at 10 %, achieving a balance between mechanical performance and environmental benefits. A strong exponential correlation between ultrasonic pulse velocity (UPV) and compressive strength was established (f'c = 0.045e<sup>0.0016v</sup>, R<sup>2</sup> = 0.793), enabling reliable non-destructive strength prediction. Life cycle assessment (LCA) revealed that incorporating PP granules increased the global warming potential (GWP) by approximately 2–6 % at a 0.45 W/C ratio and 3–8 % at 0.55, primarily due to the energy-intensive recycling process. Additionally, the embodied energy (EE) increased by 5–15 % and 7–21 % at 0.45 and 0.55 W/C ratios, respectively. Although PP integration contributes to reducing natural aggregate consumption, its environmental benefits are constrained by higher embodied energy and costs, indicating its application is best limited to non-structural concrete where sustainability trade-offs can be justified.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"12 ","pages":"Article 101255"},"PeriodicalIF":0.0,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144557317","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