Journal of Environmental Chemical Engineering最新文献_第7页

Arsenate removal from water by Al electrocoagulation with graphite as cathodes: Efficiency, cost, and potential reasons superior to aluminum cathodes 以石墨为阴极的铝电凝法去除水中砷酸盐：效率、成本和潜在原因优于铝阴极

IF 7.4 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-03-21 DOI: 10.1016/j.jece.2025.116244

Jianbo Lu , Yachao Wang , Yumin Cao , Yucan Liu , Bin Lu , Jiajiong Xu , Wei Wang , Zhiqiang Ni

{"title":"Arsenate removal from water by Al electrocoagulation with graphite as cathodes: Efficiency, cost, and potential reasons superior to aluminum cathodes","authors":"Jianbo Lu , Yachao Wang , Yumin Cao , Yucan Liu , Bin Lu , Jiajiong Xu , Wei Wang , Zhiqiang Ni","doi":"10.1016/j.jece.2025.116244","DOIUrl":"10.1016/j.jece.2025.116244","url":null,"abstract":"<div><div>The effects of typical cathodes including Al, Ti, Cu, stainless steel, and graphite on Al electrocoagulation (EC) are investigated for arsenate removal. The results indicate that while arsenic removal efficiencies were similar across different cathodes (>97 %, pHi=7), the Al-Graphite (Al-G) EC system demonstrated the lowest residual Al3 +, electrolyte resistance, charge transfer resistance, and operating costs, including energy consumption, electrode loss, and sludge production. Compared to Al-Al EC, Al-G EC reduced electrode loss by 50 %, energy consumption by 27 %, wet sludge production by 40 %, and residual Al3+ by 52 % at 2.5 A/m2. Al-G EC with NaCl displayed the lowest charge transfer resistance and energy consumption. Coexisting Ca2+ and Mg2+ distinctly decreased the energy consumption and residual Al3+. Fe2+, Mn2+, and humic acid showed insignificant effects on the operating costs and residual Al3+ (p value > 0.05). Alb and Alc represented the predominant aluminum forms in Al-G EC and Al-Al EC, respectively. The flocs from Al-G EC exhibited higher zeta potentials (5.40 −19.24 mV) and smaller pore diameter (8.98 nm), enhancing As(V) adsorption. The lower HER activity of graphite cathode prevented a rapid increase in pH, thereby regulating the predominant aluminum forms. The flocs from Al-G EC had a better dehydration property, and lower weight (wet: 1.6 g/L, dry: 0.03 g/L) and water percentage (98.3 %), which was favorable for the subsequent sludge treatment. The continuous-flow experiment (30 h) further demonstrated the advantage of Al-G EC over Al-Al EC.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116244"},"PeriodicalIF":7.4,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687372","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

Double S-scheme junction of BiVO4/g-C3N4/Bi2O3 toward efficiently removal formaldehyde under simulated full-spectrum irradiation: Study of the catalytic mechanisms and reaction pathway 模拟全光谱辐照下BiVO4/g-C3N4/Bi2O3双s型结高效脱除甲醛的催化机理和反应途径研究

IF 7.4 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-03-20 DOI: 10.1016/j.jece.2025.116246

Yuhang Wu , Ying Liu , Jianping He , Yiguo Su , Meiting Song

{"title":"Double S-scheme junction of BiVO4/g-C3N4/Bi2O3 toward efficiently removal formaldehyde under simulated full-spectrum irradiation: Study of the catalytic mechanisms and reaction pathway","authors":"Yuhang Wu , Ying Liu , Jianping He , Yiguo Su , Meiting Song","doi":"10.1016/j.jece.2025.116246","DOIUrl":"10.1016/j.jece.2025.116246","url":null,"abstract":"<div><div>The double S-scheme BiVO4/g-C3N4/Bi2O3 photocatalytic functional junction was designed and synthesized to oxidize and decompose formaldehyde into CO2 and H2O under simulated full-spectrum sunlight. BiVO4/g-C3N4/Bi2O3-80 % has excellent photocatalytic activity and high CO2 selectivity. After 3 hours, the HCHO (500 ppm) degradation rate reached 97.72 % and the CO2 selectivity reached 99.56 %. The photocatalytic mechanism was proposed through the photoelectrochemical performance test and active free radical test and density functional theory (DFT) calculation, that the photogenerated electrons between BiVO4-g-C3N4 and Bi2O3-g-C3N4 are transferred in a S-scheme path under the built-in electric field effect. This not only improves the separation and transfer efficiency of the photogenerated carriers, but also effectively inhibits its recombination; and a large number of photogenerated electrons gather on the conduction band of g-C3N4, and the holes remain in the valence bands of BiVO4 and Bi2O3, respectively; and maintain the original strong redox ability of each unit catalyst. Therefore, a large amount of active free radicals •OH and •O2- are generated, which helps to improve the photocatalytic formaldehyde degradation activity. This work provides a new double S-scheme catalytic junction design idea for improving the activity of photocatalytic materials and BiVO4/g-C3N4/Bi2O3 is expected to be popularized and applied in the field of environmental purification in the future.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116246"},"PeriodicalIF":7.4,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687331","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

The role of graft-modified chitosan-based coagulants in pharmaceutically combined polluted water: Performance and mechanism 接枝改性壳聚糖基混凝剂在药物复合污染水中的作用：性能和机理

IF 7.4 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-03-20 DOI: 10.1016/j.jece.2025.116205

Yimu Qiao , Xue Han , Yijia Ren , Feiyong Chen , Cuizhen Sun , Jin Wang , Zhigang Yang , Linxu Xu , Xue Shen , Rupeng Liu

{"title":"The role of graft-modified chitosan-based coagulants in pharmaceutically combined polluted water: Performance and mechanism","authors":"Yimu Qiao , Xue Han , Yijia Ren , Feiyong Chen , Cuizhen Sun , Jin Wang , Zhigang Yang , Linxu Xu , Xue Shen , Rupeng Liu","doi":"10.1016/j.jece.2025.116205","DOIUrl":"10.1016/j.jece.2025.116205","url":null,"abstract":"<div><div>The extensive use of ibuprofen (IBU) and acetaminophen (APAP) has led to their accumulation in surface water, resulting in combined pollution with natural organic matter (NOM). In this study, a novel modified chitosan-based coagulant (CTS-DMDAAC) was successfully synthesized by adding ceric ammonium nitrate (CAN) to make chitosan (CTS) and dimethyldiallylammonium chloride (DMDAAC) produce free radicals for graft copolymerization. The study investigated the effects of pH, initial NOM concentration, and suspended particulates on the performance of contaminant removal and the characteristics of flocs. Through analysis of the Zeta potential and floc characteristics, the primary flocculation mechanisms were identified as: net capture and sweep, charge neutralization, and bridging effect. CTS-DMDAAC demonstrated effective removal of NOM, particularly humus, but encountered challenges in removing small-molecule pharmaceuticals such as IBU and APAP, with removal rates below 15 %. To enhance the removal rate of small organic molecules, powdered activated carbon (PAC) was incorporated into the coagulation system, resulting in increased removal rates of IBU and APAP to 71.44 % and 79.9 %, respectively. Additionally, PAC improved the bridging capacity during coagulation, resulting in a 1.25-fold increase in the strength factor and a 2.34-fold increase in the recovery factor of the flocs. These findings suggest that the combined use of PAC and CTS-DMDAAC presents a novel approach for treating water bodies contaminated with NOM and pharmaceutical complexes.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116205"},"PeriodicalIF":7.4,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687376","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

Dual-stage soft sensor-based fault reconstruction and effluent prediction toward a sustainable wastewater treatment plant using attention fusion deep learning model 基于关注融合深度学习模型的双级软传感器故障重构与污水处理厂出水预测

IF 7.4 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-03-20 DOI: 10.1016/j.jece.2025.116221

Abdulrahman H. Ba-Alawi, Jiyong Kim

{"title":"Dual-stage soft sensor-based fault reconstruction and effluent prediction toward a sustainable wastewater treatment plant using attention fusion deep learning model","authors":"Abdulrahman H. Ba-Alawi, Jiyong Kim","doi":"10.1016/j.jece.2025.116221","DOIUrl":"10.1016/j.jece.2025.116221","url":null,"abstract":"<div><div>Soft sensor-based monitoring of wastewater treatment plants (WWTPs) is crucial for ensuring stable operation, maintaining strict environmental standards, and minimizing economic losses. However, faulty measurements of independent variables generate inaccurate data, which affects the reliability of the developed soft sensor. Therefore, this study proposes a two-stage modeling approach to reconstruct faulty measurements and predict effluent water quality parameters using attention-fusion techniques with convolutional deep learning model. In the first stage, faulty measurements are reconstructed using an attention-fusion autoencoder (AFAE) model. In the second stage, the reconstructed data are then fused into an attention convolutional neural network (ACNN) to provide real-time predictions of effluent parameter concentrations. In the reconstruction stage, the AFAE model achieved a superior fault reconstruction performance for a malfunctioning dissolved oxygen sensor with R2 value of 0.9909. In the subsequent stage, the ACNN model exhibited superior predictive capabilities for effluent parameter concentrations, reducing residual error by 57.2 % compared to the faulty data scenario. Consequently, the aeration energy saving was improved by 18.4 % with the sustainable environmental discharge of the effluent. The proposed two-stage AFAE–ACNN model-based soft sensor can simultaneously calibrate malfunctioning sensors and accurately predict effluent concentrations, providing smart operational strategies for sustainable WWTPs.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116221"},"PeriodicalIF":7.4,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687371","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

Floated Bi4Ti3O12@MoS2 p-n heterojunction anti-fouling hydrogels for efficient seawater purification 浮动Bi4Ti3O12@MoS2 p-n异质结防污水凝胶用于高效海水净化

IF 7.4 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-03-20 DOI: 10.1016/j.jece.2025.116265

Ying Liu , Bingyan Ni , Ruotong Ru , Linlin Zhang , Hongfei Sun , Jianjun Liao , Cheng Li , Dexin Wang , Xiaodong Zhang , Wei Zhou

{"title":"Floated Bi4Ti3O12@MoS2 p-n heterojunction anti-fouling hydrogels for efficient seawater purification","authors":"Ying Liu , Bingyan Ni , Ruotong Ru , Linlin Zhang , Hongfei Sun , Jianjun Liao , Cheng Li , Dexin Wang , Xiaodong Zhang , Wei Zhou","doi":"10.1016/j.jece.2025.116265","DOIUrl":"10.1016/j.jece.2025.116265","url":null,"abstract":"<div><div>Photocatalytic treatment of seawater pollutants has far-reaching significance for marine conservation, but the recyclability in marine environments and their unavoidable threat from biofouling constrain their practical applications. Herein, a floated Bi4Ti3O12@MoS2 p-n heterojunction anti-fouling hydrogel (BMH) is fabricated through two-step hydrothermal method, where Bi4Ti3O12 nanoparticles (Eg=3.1 eV) and flower-like MoS2 (Eg=1.76 eV) form p-n heterojunctions with a 2D-2D structure and package to a three-dimensional driver-responsive hydrogel consisting of poly (vinyl alcohol) (type 1799), tannic acid and N-isopropylacrylamide for marine environmental protection. Under light irradiation, the formation of a p-n heterojunction in BMH facilitates the generation of primary active species, namely ·OH and ·O2-, thereby endowing the system with enhanced redox capability. Among them, 30 wt% BMH achieved the best removal efficiency of 98.2 % of 10 mg/L TC, which is 1.38 times that of pure nanoparticles Bi4Ti3O12@MoS2 23.17 times that of the blank hydrogel. Simultaneously, the optimal bacterial attachment rate and anti-diatom attachment rate reach 99.3 % and 93.82 %, respectively, confirming the excellent antifouling properties of BMH. The degradation intermediates exhibit environmental friendliness, providing potential for further practical applications in seawater purification.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116265"},"PeriodicalIF":7.4,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687377","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

Electrospun nanofibrous membranes based sorbents for oil/water separation: Blends, composites, functionalized, and smart membranes – A mini review 用于油/水分离的电纺丝纳米纤维膜吸附剂：共混物、复合材料、功能化膜和智能膜

IF 7.4 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-03-20 DOI: 10.1016/j.jece.2025.116262

Kandiyil Juraij , Paroly Sagitha , Athiyanathil Sujith , Chingakham Chinglenthoiba

{"title":"Electrospun nanofibrous membranes based sorbents for oil/water separation: Blends, composites, functionalized, and smart membranes – A mini review","authors":"Kandiyil Juraij , Paroly Sagitha , Athiyanathil Sujith , Chingakham Chinglenthoiba","doi":"10.1016/j.jece.2025.116262","DOIUrl":"10.1016/j.jece.2025.116262","url":null,"abstract":"<div><div>Electrospun nanofibrous membranes (ENMs), composed of electrospun nanofibers (ENs), have emerged as promising candidates for oil sorption and oil/water separation due to their properties, including tailored hydrophobicity, oil sorption capacity, large surface area, controllable pore size, and ease of functionalization. This mini-review presents a state-of-the-art analysis of the latest progress in the fabrication of hydrophobic or superhydrophobic ENMs-based oil sorbets for oil-sorbing or oil-removing (OR) oil/water separation applications. The discussion encompasses the following categories of ENMs: the fabrication and performance of pristine hydrophobic polymer-based ENMs, polymer blend ENMs, and polymer composite ENMs incorporating various nanomaterials. Furthermore, post-modifications employed to enhance hydrophobicity are examined, with particular emphasis on oil sorption and oil/water separation. Although the aforementioned strategies are effective for oil/water separation, for challenging applications specific attention is directed toward smart membranes such as Janus ENMs, pH-responsive and thermo-responsive ENMs, which are suitable for dynamic and controlled oil/water separation. This review summarizes advancements in the field while also addressing apparent gaps and considerations for future research agendas concerning ENMs, focusing on the applicability of their functionalization in addressing global environmental issues such as oil spill and wastewater management.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116262"},"PeriodicalIF":7.4,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sodium percarbonate (SPC) activation by magnetic cobalt-based catalysts for organic pollutants degradation: Performance and mechanism 磁性钴基催化剂活化过碳酸钠降解有机污染物：性能和机理

IF 7.4 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-03-20 DOI: 10.1016/j.jece.2025.116184

Cuizhen Sun , Meng Li , Xue Shen , Feiyong Chen , Yimu Qiao , Zhen Zhang , Jingan Liu , Rupeng Liu , Haoyu Fan

{"title":"Sodium percarbonate (SPC) activation by magnetic cobalt-based catalysts for organic pollutants degradation: Performance and mechanism","authors":"Cuizhen Sun , Meng Li , Xue Shen , Feiyong Chen , Yimu Qiao , Zhen Zhang , Jingan Liu , Rupeng Liu , Haoyu Fan","doi":"10.1016/j.jece.2025.116184","DOIUrl":"10.1016/j.jece.2025.116184","url":null,"abstract":"<div><div>Herein, a magnetic composite material, Co-CoO@BC, was prepared by loading Co and CoO with coffee grounds as biochar support. A water purification system of Co-CoO@BC activated sodium percarbonate (SPC) was constructed to degrade acid orange 7 (AO7) rapidly. The experimental results demonstrated that Co-CoO@BC exhibited excellent performance in activating SPC to degrade AO7, achieving a degradation efficiency of nearly 95 % within 20 min. Characterization and analysis of the Co-CoO@BC were conducted to investigate its physicochemical properties. The findings indicated that introducing cobalt enhanced the defects, specific surface area, and pore volume of the catalyst, which provided more active sites for the catalytic reaction, thereby improving the degradation of AO7. Subsequently, the oxidation mechanism of radical and non-radical pathways in the Co-CoO@BC/SPC system was studied through quenching experiments, electron paramagnetic resonance (EPR), and electrochemical tests. Furthermore, this study identified the intermediates of AO7 degradation, tentatively proposed a possible degradation pathway, and assessed the biological toxicity of AO7 and its degradation intermediates. The research expands the application of transition metal-biochar composites in SPC activation and deepens the comprehension of the SPC activation mechanism.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116184"},"PeriodicalIF":7.4,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687332","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

Dihydroxy functionalized binuclear carbonate based poly(ionic liquid)s for highly efficient conversion of low-concentration CO2 into cyclic carbonate 二羟基功能化双核碳酸酯基聚离子液体，用于将低浓度二氧化碳高效转化为环状碳酸酯

IF 7.4 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-03-19 DOI: 10.1016/j.jece.2025.116247

Yuqiao Jiang , Xinyu Yuan , Peiru Wang , Linyan Cheng , Ranran Li , Qinghua Qu , Cheng Fang , Hongping Li , Jing Ding , Hui Wan , Guofeng Guan

{"title":"Dihydroxy functionalized binuclear carbonate based poly(ionic liquid)s for highly efficient conversion of low-concentration CO2 into cyclic carbonate","authors":"Yuqiao Jiang , Xinyu Yuan , Peiru Wang , Linyan Cheng , Ranran Li , Qinghua Qu , Cheng Fang , Hongping Li , Jing Ding , Hui Wan , Guofeng Guan","doi":"10.1016/j.jece.2025.116247","DOIUrl":"10.1016/j.jece.2025.116247","url":null,"abstract":"<div><div>The elimination of carbon dioxide (CO2) from the industrial post-combustion dilute CO2 has been a hot issue and the selective conversion of CO2 from the exhaust gas stream still remains a challenge. Herein, dihydroxy functionalized binuclear carbonate based poly(ionic liquid)s (HB-PILs) were prepared for conversion of low-concentration CO2 from the dilute CO2 (15 vol% CO2 + 85 vol% N2) into cyclic carbonate. Using epichlorohydrin as a probe substrate, the obtained HB-PILs exhibited excellent catalytic performance for the CO2 cycloaddition reaction. Under optimized process parameters (100 ℃, 2 MPa and 4 h), the highest yield (95 %) of chloropropene carbonate (CPC) was obtained, which was comparable to the previous reported results. Moreover, the synergetic effect between the activation of epoxides by dihydroxyl groups and the adsorption of CO2 by basic CO32- ions was studied through the theoretical calculations. DFT results indicated that CO32- served as the nucleophilic site, working synergistically with hydrogen bond donors to facilitate the ring-opening of epichlorohydrin (ECH). Additionally, CO32- functioned as the basic site to activate CO2. This study will provide a promising solution for mitigating global climate change and advancing the green chemistry of CO2 utilization from dilute CO2.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116247"},"PeriodicalIF":7.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687324","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

Ultrasonically assisted synthesis of CaCO3 whiskers from CO2 flue gas and steel slag leachate: A high-efficiency and valuable technique 从CO2烟气和钢渣渗滤液中超声辅助合成碳酸钙晶须：一种高效有价值的技术

IF 7.4 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-03-19 DOI: 10.1016/j.jece.2025.116242

Lincheng Liu , Min Gan , Xiaohui Fan , Zitan Gao , Zengqing Sun , Yufeng Li , Zhiyun Ji , Xiaolong Wang , Yufeng Wu , Hao Lv

{"title":"Ultrasonically assisted synthesis of CaCO3 whiskers from CO2 flue gas and steel slag leachate: A high-efficiency and valuable technique","authors":"Lincheng Liu , Min Gan , Xiaohui Fan , Zitan Gao , Zengqing Sun , Yufeng Li , Zhiyun Ji , Xiaolong Wang , Yufeng Wu , Hao Lv","doi":"10.1016/j.jece.2025.116242","DOIUrl":"10.1016/j.jece.2025.116242","url":null,"abstract":"<div><div>As the rubber industry thrives amidst global economic growth, enhancing rubber quality through superior fillers like CaCO3 is becoming increasingly crucial. This innovative approach investigates the sustainable synthesis of CaCO3 whiskers from steel slag, seeking to reduce reliance on natural resources while promoting environmental preservation. Leveraging a calcium-rich leachate obtained from steel slag through acetic acid leaching, CaCO3 whiskers were synthesized under the influence of ultrasound and CO2 captured in ammonia solution. The synthesis parameters including ultrasonic power, reaction time, initial reaction temperature, and the Ca2 +/Mg2+ concentration ratio were systematically varied to optimize the morphology and purity of the CaCO3 whiskers. Magnesium plays a critical role in this process, acting as a growth regulator by attaching to the most reactive surfaces of initial CaCO3 crystals, thereby directing their transformation into high-aspect-ratio aragonite whiskers. This control mechanism was pivotal in achieving high-purity aragonite-type CaCO3 with enhanced structural properties suitable as reinforcing fillers in rubber. The synthesized CaCO3 whiskers, with an aspect ratio ranging from 20 to 150, achieved purities over 93.1 % and whiteness above 98.5 %. This method not only transforms steel slag and low-concentration CO2 emissions into valuable resources but also plays a significant role in advancing CCUS (Carbon Capture, Utilization, and Storage) technologies within the steel industry, marking a significant step towards sustainable industrial practices and aligning with global sustainability goals.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116242"},"PeriodicalIF":7.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687330","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

Binary metal (Zn/Ce) co-doped Co3O4 nanoparticles: Characterization and comparative evaluation of photocatalytic, antibacterial and antioxidant potential 二元金属（Zn/Ce）共掺杂Co3O4纳米粒子：光催化、抗菌和抗氧化潜力的表征和比较评价

IF 7.4 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-03-19 DOI: 10.1016/j.jece.2025.116241

Shweta Kaushal , Naveen Thakur , Kuldeep Kumar

{"title":"Binary metal (Zn/Ce) co-doped Co3O4 nanoparticles: Characterization and comparative evaluation of photocatalytic, antibacterial and antioxidant potential","authors":"Shweta Kaushal , Naveen Thakur , Kuldeep Kumar","doi":"10.1016/j.jece.2025.116241","DOIUrl":"10.1016/j.jece.2025.116241","url":null,"abstract":"<div><div>Here, tricobalt tetraoxide (Co3O4) nanoparticles (NPs) were successfully synthesized with co-dopants Zn and Ce using Citrus limon (C. limon) leaf extract. The products from green reaction mediated synthesis were further investigated for their efficiency for three applications including photocatalytic degradation of congo red (CR) and rhodamine B (RB), antibacterial and antioxidant potential for biomedical applications. Prior to the applicative part, green synthesized Co3O4 NPs were characterized for evaluating structural, vibrational, morphological, compositional, and optical parameters using established characterizations like X-ray diffraction, FTIR, SEM/TEM, EDX, and UV–vis spectroscopy. The XRD results showed a reduction in crystallite size from pure Co3O4 NPs (11.46 nm) to Zn, Ce, and Zn/Ce co-doped Co3O4 (9.73 nm) NPs with extended dislocation density and strain. The change in bond length parameters due to the addition of Zn and Ce was also confirmed by FTIR analysis. The morphological variations with the dopants and confirmation of elemental composition were done using SEM-EDS mapping and TEM results. The UV–vis results inferred the absorption regions of synthesized samples with 1.50 eV band gap energy for pure, 1.45 eV for Zn doped, 1.44 eV for Ce doped, and 1.31 eV for co-doped samples. Based on the results, the co-doped Co3O4 NPs exhibited significantly higher photodegradation and antibacterial and antioxidant results.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116241"},"PeriodicalIF":7.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687334","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