Journal of water process engineering最新文献_第8页

CF3-functionalized polyamide layers enhancing solvent permeability of polyimide-based organic solvent nanofiltration membranes for pharmaceutical separation cf3功能化聚酰胺层提高聚酰亚胺基有机溶剂纳滤膜药物分离的溶剂渗透性

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-06-13 DOI: 10.1016/j.jwpe.2025.108139

Xiaolei Wang , Jingguo Zhang , Jing Feng , Shurui Han , Chan Huang , Zhiyun Kong , Huicai Wang

{"title":"CF3-functionalized polyamide layers enhancing solvent permeability of polyimide-based organic solvent nanofiltration membranes for pharmaceutical separation","authors":"Xiaolei Wang , Jingguo Zhang , Jing Feng , Shurui Han , Chan Huang , Zhiyun Kong , Huicai Wang","doi":"10.1016/j.jwpe.2025.108139","DOIUrl":"10.1016/j.jwpe.2025.108139","url":null,"abstract":"<div><div>An organic solvent nanofiltration (OSN) membrane was fabricated through interfacial polymerization (IP) to form a selective layer containing hydrophilic amide (–CONH–) and hydrophobic trifluoromethyl (–CF<sub>3</sub>) groups on a polyimide (PI) substrate. Piperazine (PIP) and 5-trifluoromethyl-1,3-phenylenediamine (TFMPD) were employed as aqueous phase monomers, reacting with trimesoyl chloride (TMC) in the organic phase. The effects of TFMPD incorporation on the chemical structure, morphology, surface properties, separation performance, and stability of the membranes were systematically investigated. The results revealed that the competitive reaction between TFMPD and PIP led to a thinner selective layer with reduced cross-linking degree, thereby enhancing solvent permeance while maintaining consistent pharmaceutical rejection. Specifically, the introduction of –CF<sub>3</sub> groups improved non-polar solvent transport, achieving a 3.2-fold increase in n-hexane permeance. After 91 days of immersion in <em>N</em>, <em>N</em>-dimethylformamide (DMF), the membrane retained ~94 % rifampicin (RFP) rejection and maintained an ethanol/water permeance of ~4.5 L·m<sup>−2</sup>·h<sup>−1</sup>·bar<sup>−1</sup>. This work demonstrates a rational design strategy for developing solvent-resistant OSN membranes with balanced permeability-selectivity-stability for pharmaceutical separation in organic solvents.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"76 ","pages":"Article 108139"},"PeriodicalIF":6.3,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144270059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergy between adsorption and bio-degradation of real wastewater polycyclic aromatic hydrocarbons (PAHs) by laccase immobilized on pineapples waste activated carbon: Recyclability, performance, and DFT analysis 菠萝废活性炭固定化漆酶对实际废水中多环芳烃（PAHs）的吸附和生物降解的协同作用：可回收性、性能和DFT分析

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-06-13 DOI: 10.1016/j.jwpe.2025.108124

Osamah J. Al-sareji , Ruqayah Ali Grmasha , Mónika Meiczinger , Miklós Jakab , Csilla Stenger-Kovács , Faisal M. Alfaisal , Tinku Biswas , Mohammed A. Al-Seady , Shamshad Alam , Raed A. Al-Juboori

{"title":"Synergy between adsorption and bio-degradation of real wastewater polycyclic aromatic hydrocarbons (PAHs) by laccase immobilized on pineapples waste activated carbon: Recyclability, performance, and DFT analysis","authors":"Osamah J. Al-sareji , Ruqayah Ali Grmasha , Mónika Meiczinger , Miklós Jakab , Csilla Stenger-Kovács , Faisal M. Alfaisal , Tinku Biswas , Mohammed A. Al-Seady , Shamshad Alam , Raed A. Al-Juboori","doi":"10.1016/j.jwpe.2025.108124","DOIUrl":"10.1016/j.jwpe.2025.108124","url":null,"abstract":"<div><div>The contamination of micropollutants in wastewater has become a global issue due to their persistent impact on ecosystems and human health. The enzymatic degradation of polycyclic aromatic hydrocarbons (PAHs) offers a promising, sustainable approach, although it is limited by reduced stability and recycling challenges. In this study, we demonstrated the use of pineapple peel waste as a novel support for the immobilization of laccase (Trametes versicolor) via an adsorption technique (laccase@PPAC). The activated carbon synthesized using potassium hydroxide (PPAC), and laccase@PPAC were characterized through various methods. The laccase@PPAC exhibited excellent performance, achieving maximum adsorption capacities of 270.38 mg/g for benzo[<em>a</em>]pyrene (BaP) and 335.27 mg/g for anthracene (Ant). When combined with enzymatic degradation, total removal reached 98.72 % for BaP and 99.87 % for Ant, corresponding to total degradation-enhanced capacities of 301.21 mg/g and 317.41 mg/g, respectively. Additionally, laccase@PPAC maintained high removal efficiency over 20 reuse cycles. The system showed superior thermostability and pH tolerance compared to free-state laccase. Adsorption kinetics followed the pseudo-first-order model, while equilibrium data were best described by the Langmuir isotherm. This work highlights the potential of pineapple waste-derived activated carbon as a sustainable and effective support for enzyme immobilization in the bioremediation of PAHs-contaminated wastewater.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"76 ","pages":"Article 108124"},"PeriodicalIF":6.3,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144270060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Micro-nanobubble-assisted TiO2/ZnO/rGO nanocomposites for efficient pollutant degradation and antibacterial activity 微纳气泡辅助TiO2/ZnO/rGO纳米复合材料的高效污染物降解和抗菌活性

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-06-13 DOI: 10.1016/j.jwpe.2025.108135

Phoutthideth Phouheuanghong , Ranjith Rajendran , Orawan Rojviroon , Priyadharsan Arumugam , Sanya Sirivithayapakorn , Thammasak Rojviroon

{"title":"Micro-nanobubble-assisted TiO2/ZnO/rGO nanocomposites for efficient pollutant degradation and antibacterial activity","authors":"Phoutthideth Phouheuanghong , Ranjith Rajendran , Orawan Rojviroon , Priyadharsan Arumugam , Sanya Sirivithayapakorn , Thammasak Rojviroon","doi":"10.1016/j.jwpe.2025.108135","DOIUrl":"10.1016/j.jwpe.2025.108135","url":null,"abstract":"<div><div>In this work, TiO<sub>2</sub>/ZnO/rGO (TZR) nanocomposites (NCs) were prepared by hydrothermal methods and systematically evaluated for their photocatalytic and antibacterial activity, aiming at efficient environmental remediation. The physicochemical characteristics of the acquired samples were examined by the use of several methods, including UV–visible spectroscopy, X-ray Diffraction (XRD), X-ray Photo electron Spectroscopy (XPS), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy (SEM- EDX), Transmission Electron Microscopy (TEM), Ultraviolet-Visible Diffuse Reflectance Spectroscopy (UV-DRS), and Brunauer-Emmett-Teller (BET) analysis, which confirmed the successful combination of TiO<sub>2</sub>, ZnO, and rGO within the composite structure. Photocatalytic performance exposed that the TZR NCs, particularly when combined with micro-nanobubbles (MNB), exhibited notable degradation efficiencies of 99.8 % for Indigo Carmine (IC), 98.73 % for Reactive Black 5 (RB5), and 99.60 % for carbaryl pesticide within 120 min under UVA light irradiation. The presence of micro-nanobubbles (MNB) significantly enhanced dissolved oxygen concentration and reactive oxygen species (ROS) generation, accelerating the pollutant degradation process. Furthermore, the TZR NCs exhibited notable antibacterial activity against <em>Staphylococcus aureus</em> (<em>S.aureus</em>) at 12 mm for 75 μgL<sup>−1</sup> and <em>Escherichia coli</em> (<em>E.coli</em>) at 10 mm for 75 μgL<sup>−1</sup>. This thorough study emphasizes the practical application of TZR NCs photocatalytic devices for effective wastewater treatment, providing a potential dual-action method for reducing both chemical pollutants and microbiological contaminants in aquatic environments.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"76 ","pages":"Article 108135"},"PeriodicalIF":6.3,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144270061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Z-scheme photo-Fenton catalysts of n-n g-C3N4/FeMnO3/EP for enhanced tetracycline degradation in pharmaceutical wastewater n-n - g-C3N4/FeMnO3/EP Z-scheme光- fenton催化剂对制药废水中四环素的强化降解

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-06-13 DOI: 10.1016/j.jwpe.2025.108132

Zijin Zhang , Guangzhu Zhou , Xueying Yin , Yuanhao Wang , Cuizhen Wang

{"title":"Z-scheme photo-Fenton catalysts of n-n g-C3N4/FeMnO3/EP for enhanced tetracycline degradation in pharmaceutical wastewater","authors":"Zijin Zhang , Guangzhu Zhou , Xueying Yin , Yuanhao Wang , Cuizhen Wang","doi":"10.1016/j.jwpe.2025.108132","DOIUrl":"10.1016/j.jwpe.2025.108132","url":null,"abstract":"<div><div>Tetracycline (TC) is an environmental threat due to its widespread use in the pharmaceutical industry. An n-n g-C<sub>3</sub>N<sub>4</sub>/FeMnO<sub>3</sub>/EP <em>Z</em>-scheme autotrophic photofenton material was synthesized and subjected to TC degradation experiments. The homogeneous heterojunction modification was carried out for the carbon nitride precursor using direct heat shrinkage to effectively separate the electron-hole pairs, which was compounded with FeMnO<sub>3</sub> under ultrasound. The introduction of Fe/Mn bi-ionic synergistic system promotes the cyclic conversion of Fe(II)/Fe(III), which reduces the formation of iron sludge during the degradation process. The material was combined with expanded perlite for the purpose of overcoming the loss of solar energy due to water absorption and reflection in the photofenton system. The photo-Fenton performance was characterized by the combination of Potassium peroxymonosulfate (PMS) and the degradation rate was as high as 0.02741 min<sup>−1</sup>. Using free radical scavenging experiments, EPR determined that SO<sub>4</sub><sup>·-</sup>,·OH, <sup>1</sup>O<sub>2</sub>, and ·O<sub>2</sub><sup>−</sup> is the main active substance in the photofenton process. UV, XPS and LC-MS were used to trace the mechanism of photo-Fenton degradation of TC and possible pathways that may occur in the resulting process. The present study proposes novel theoretical concepts pertaining to the purification of TC in water and the generation of low-iron sludge in the photofenton process.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"76 ","pages":"Article 108132"},"PeriodicalIF":6.3,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144270056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tandem “heterogeneous catalysis/biological degradation” optimization for the treatment of recalcitrant compounds in industrial streams 串联“多相催化/生物降解”优化处理工业废水中顽固化合物

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-06-13 DOI: 10.1016/j.jwpe.2025.108134

Laura G. Covinich , Paola A. Massa , Ana M. Ferro Orozco , Fernando E. Felissia , María C. Area

{"title":"Tandem “heterogeneous catalysis/biological degradation” optimization for the treatment of recalcitrant compounds in industrial streams","authors":"Laura G. Covinich , Paola A. Massa , Ana M. Ferro Orozco , Fernando E. Felissia , María C. Area","doi":"10.1016/j.jwpe.2025.108134","DOIUrl":"10.1016/j.jwpe.2025.108134","url":null,"abstract":"<div><div>This study developed a combined Advanced Oxidation Process (AOP)/biological treatment to reduce the recalcitrant organic load in an industrial black liquor from alkaline sulfite pulping. The methodology involved a Fenton-type reaction using a 2.5 % CuO/γ-Al<sub>2</sub>O<sub>3</sub> catalyst, optimized to minimize Cu<sup>2+</sup> leaching (reduced Cu<sup>2+</sup> leaching from 8.2 mg/L to 1.0 mg/L) and maximize catalyst reuse. The catalyst demonstrated high stability, maintaining effectiveness for up to five cycles. The optimized Fenton pre-treatment enhanced biodegradability, increasing the Biological Oxygen Demand/COD ratio to 0.23 (initial ratio of 0.05), and exhibited minimal toxicity to the microbial community. Subsequent biological treatment was carried out using activated sludge cultured in an aerobic laboratory-scale reactor with partial biomass recycling. Operating conditions were 80 °C, 65.1 mg/L of supported copper (0.32 g of catalyst) and 3.23 g/L of H<sub>2</sub>O<sub>2</sub>. The combined AOP/biological system achieved a global 86 % TOC reduction and 93 % COD reduction. With the combination of processes, the current Argentine regulations regarding COD levels in industrial discharges are complied with, adhering to the maximum allowed limit of 250 mg/L in most provinces. Although some Cu leaching occurred, the dissolved copper retained catalytic activity, likely due to complexation with oxidation intermediates. The biological stage effectively treated the pre-oxidized liquor without requiring biomass acclimatization, maintaining microbial activity. These findings confirm the long-term viability of this integrated treatment for industrial applications. Future work should focus on scaling up the process, particularly addressing agitation requirements during the AOP stage.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"76 ","pages":"Article 108134"},"PeriodicalIF":6.3,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144280211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mitigating magnesium electrode fouling through polarity reversal electrocoagulation for struvite production from source-separated urine 通过极性反转电凝从源分离尿液中生产鸟粪石，减轻镁电极污染

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-06-12 DOI: 10.1016/j.jwpe.2025.108117

Alisha Zaffar, Jayaraman Sivaraman, Paramasivan Balasubramanian

{"title":"Mitigating magnesium electrode fouling through polarity reversal electrocoagulation for struvite production from source-separated urine","authors":"Alisha Zaffar, Jayaraman Sivaraman, Paramasivan Balasubramanian","doi":"10.1016/j.jwpe.2025.108117","DOIUrl":"10.1016/j.jwpe.2025.108117","url":null,"abstract":"<div><div>Electrochemical struvite precipitation is proposed to be an effective technology for phosphate recovery to tackle the problem of depleting phosphate rocks and eutrophication. However, the corrosion of magnesium ions from the anode is hindered due to passivation, limiting the technological scale-up. The study aims to investigate and reduce passivation of magnesium electrode for struvite precipitation from fresh, source separated urine. The corrosion and passivation pattern of magnesium was investigated using electrochemical techniques Furthermore, polarity reversal electrocoagulation (PR-EC) at different polarity reversal time (PRT) between 0 and 10 min concluded an maximum phosphorus recovery (>98 %) and struvite precipitation (1.90 g L<sup>−1</sup>) at PRT of 5 min. Enhanced corrosion due to reduction of electrode fouling was further confirmed with comparable corrosion rate (19.36 mm year<sup>−1</sup>) of the used electrode at PRT 5 min to the fresh electrode (24.35 mm year<sup>−1</sup>) extrapolated from the Tafel plot. Moreover, the production of struvite was confirmed by FTIR, XRD, SEM-EDX. The decrease of phosphate recovery in sequence batch experimental runs was non-significant for PR-EC, confirming its efficiency over direct current electrocoagulation. Further, with an increase of surface area by volume ratio, faster phosphate recovery was achieved. Overall, PR-EC is an efficient method for struvite precipitation from source-separated urine.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"76 ","pages":"Article 108117"},"PeriodicalIF":6.3,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144261924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Selective removal of oxytetracycline from aquaculture wastewater by molecular imprinting FeCo MOF nanosheets 分子印迹FeCo MOF纳米片选择性去除水产养殖废水中的土霉素

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-06-12 DOI: 10.1016/j.jwpe.2025.108133

Hui Li , Long Zhou , Zuliang Chen

{"title":"Selective removal of oxytetracycline from aquaculture wastewater by molecular imprinting FeCo MOF nanosheets","authors":"Hui Li , Long Zhou , Zuliang Chen","doi":"10.1016/j.jwpe.2025.108133","DOIUrl":"10.1016/j.jwpe.2025.108133","url":null,"abstract":"<div><div>Aquaculture wastewater is contaminated with antibiotics such as oxytetracycline (OTC), which presents a serious threat to the environment and public health. In this study, Fe<img>Co MOF@MIP combining 2D bimetallic metal organic framework (MOF) with molecular imprinting technique was prepared for removing typical antibiotic-OTC from mariculture wastewater. Batch experiments indicated that the maximal capacity of adsorption of Fe<img>Co MOF@MIP to OTC was 36.9836 mg/g at 303 K, higher than that of Fe<img>Co MOF@NIP. The large number of spatial recognition sites in the blotting layer provides specific selectivity, and adsorption mechanism might be associated with the electrostatic adsorption process, hydrogen bonding and complexation among OTC and Fe<img>Co MOF@MIP. The adsorption process fits a quasi-secondary kinetic model with R<sup>2</sup> = 0.9966, suggesting that the rate of adsorption is dominated by a physical adsorption mechanism involving the sharing of electrons among the Fe<img>Co MOF@MIP and OTC. In the presence of interference, the blotting factor of Fe<img>Co MOF@MIP was 11.77, which demonstrated that the as-synthesized materials possess the excellent selectivity. Moreover, the synthesized nanosheets exhibited excellent reusability, with 16.61 mg/g OTC removal achieved using the Fe<img>Co MOF@MIP after reuse on three occasions. These findings highlighted here is the promising role of Cu<img>Co MOF nanosheets in wastewater treatment, particularly for the selective removal of antibiotics.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"76 ","pages":"Article 108133"},"PeriodicalIF":6.3,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144261925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental assessment of a zero liquid discharge system driven by a micro gas turbine 微型燃气轮机驱动的零液体排放系统的实验评估

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-06-12 DOI: 10.1016/j.jwpe.2025.108058

Rafael González-Almenara , Lourdes García-Rodríguez , David Sánchez

{"title":"Experimental assessment of a zero liquid discharge system driven by a micro gas turbine","authors":"Rafael González-Almenara , Lourdes García-Rodríguez , David Sánchez","doi":"10.1016/j.jwpe.2025.108058","DOIUrl":"10.1016/j.jwpe.2025.108058","url":null,"abstract":"<div><div>This study presents an experimental proof of concept for a zero liquid discharge (ZLD) system applied to seawater desalination. The system concentrates brine through direct-contact heat exchange using the exhaust gases of a solar micro gas turbine, bubbling them through the brine from a reverse osmosis (RO) unit until a dry residue is obtained. The design phase initially involved a hydraulic evaluation to assess gas stream-brine interactions, using a cold air stream to test different configurations and define the working region. Once hot exhaust gases were introduced, preliminary findings guided the correct sizing and internal arrangement of the ZLD system. Initial tests employed low-cost materials to successfully achieve zero liquid discharge. To fully characterise the thermo-chemical performance, experiments were conducted in batches, even though the process would operate continuously in real applications. After validating the proof of concept, the setup was refined, addressing key aspects such as material selection and optimised geometries to enhance durability and performance.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"76 ","pages":"Article 108058"},"PeriodicalIF":6.3,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144261880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Controlled electrochemical design of activated carbon surface chemistry: Enhanced copper recovery using functionalized walnut shell-derived sorbents 活性炭表面化学控制电化学设计：利用功能化核桃壳衍生吸附剂提高铜的回收率

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-06-12 DOI: 10.1016/j.jwpe.2025.108066

Dinara Abduakhytova , Saken Abdimomyn , Azhar Atchabarova , Mojtaba Mirzaeian , Rustam Tokpayev , Askar Mukanov , Graziella Liana Turdean , Fyodor Malchik , Mikhail Nauryzbayev

{"title":"Controlled electrochemical design of activated carbon surface chemistry: Enhanced copper recovery using functionalized walnut shell-derived sorbents","authors":"Dinara Abduakhytova , Saken Abdimomyn , Azhar Atchabarova , Mojtaba Mirzaeian , Rustam Tokpayev , Askar Mukanov , Graziella Liana Turdean , Fyodor Malchik , Mikhail Nauryzbayev","doi":"10.1016/j.jwpe.2025.108066","DOIUrl":"10.1016/j.jwpe.2025.108066","url":null,"abstract":"<div><div>Heavy metal contamination from industrial effluents presents a significant environmental challenge worldwide. This study presents a novel electrochemical approach to control the surface functional groups of walnut shell-based activated carbon (AC) to enhance the adsorption capacity of Cu<sup>2+</sup>. Unlike conventional chemical activation methods, our electrochemical technique employing NaOH and HNO<sub>3</sub> electrolytes offers a more sustainable and cost-effective alternative. Cyclic voltammetry revealed that NaOH modification generated strong redox reactions, significantly improving porosity and specific surface area compared to unmodified carbon. The adsorption indicator method used for the first time showed a 10-fold and 7-fold increase in adsorption centers after NaOH and HNO<sub>3</sub> electrochemical treatments, respectively, providing insights into the distribution of functional groups on the carbon surface. The maximum Cu<sup>2+</sup> adsorption capacity reached 41.61 mg/g for NaOH-modified carbon, substantially outperforming the 24.44 mg/g capacity of conventional activated carbon. The process involves monolayer adsorption through electrostatic interactions and chemical bonding between copper ions and oxygen-containing functional groups (OCFG). Adsorption isotherm studies demonstrated that modification methods can be tailored to achieve either physical or chemical adsorption mechanisms. Desorption studies confirmed the feasibility of reusing these sorbents for up to three cycles, demonstrating practical applicability for sustainable water treatment applications.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"76 ","pages":"Article 108066"},"PeriodicalIF":6.3,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144261923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Accelerated calcium carbonate dissolution in citric acid solution due to morphological changes by air ultrafine bubbles/nanobubbles 空气超微气泡/纳米气泡改变碳酸钙在柠檬酸溶液中的溶解速度

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-06-12 DOI: 10.1016/j.jwpe.2025.108138

Naruhito Katagiri , Takaki Kobayashi , Kazuki Matsueda , Shinya Furukawa , Arata Kioka

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