Journal of Environmental Chemical Engineering最新文献_第6页

Interface layer-assisted construction of metal organic framework based porous liquids for high performance CO2 selective separation 基于界面层的金属有机骨架多孔液体的高效CO2选择性分离

IF 7.2 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-09-14 DOI: 10.1016/j.jece.2025.119292

Zheng Dong , Yangyang Xin , Bowen Xiang , Ruilu Yang , Menglin Zhu , Baolu Cui , Chenjiao Xie , Shuangshuang Long , Wenwu Zhou , Jianwei Liu , Libing Qian , Hongze Guo , Yaping Zheng , Zhiyuan Yang , Dechao Wang

{"title":"Interface layer-assisted construction of metal organic framework based porous liquids for high performance CO2 selective separation","authors":"Zheng Dong , Yangyang Xin , Bowen Xiang , Ruilu Yang , Menglin Zhu , Baolu Cui , Chenjiao Xie , Shuangshuang Long , Wenwu Zhou , Jianwei Liu , Libing Qian , Hongze Guo , Yaping Zheng , Zhiyuan Yang , Dechao Wang","doi":"10.1016/j.jece.2025.119292","DOIUrl":"10.1016/j.jece.2025.119292","url":null,"abstract":"<div><div>Porous liquids (PLs) are a novel class of materials that integrate porosity and fluidity, and have garnered significant interest in gas capture and separation especially the type III PLs. However, current methods for preparing type III PLs typically involve dispersing pore generators in sterically hindered solvents, which may lead to potential loss of permanent pores or adsorption sites within pore generators. Therefore, a novel strategy of “interface layer-assisted construction” was proposed for preparing PLs by introducing an interfacial layer, where in UiO-66 serves as the old pore generator. The new pore generator, UiO-66@ZIF-8, is obtained by growing a dense ZIF-8 interfacial layer on the surface of UiO-66. Subsequently, the new pore generator UiO-66@ZIF-8was dispersed in 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMIM][NTf₂]) sterically hindered solvent to fabricate PLs. Consequently, the constructed ZIF-8 layer alters the direct interaction between the pore generator and sterically hindered solvents, enabling substantial preservation of internal adsorption sites and pore structures through indirect interactions. As expected, the as-synthesized UiO-66@ZIF-8 PLs not only demonstrate excellent CO₂ sorption capacity (0.52 mmol/g, 303 K, 2.5 bar) and low viscosity (0.08 Pa·s at 25 °C), but also exhibit outstanding CO₂/CH₄ and CO₂/N₂ separation performance. Notably, this approach offers a promising advancement in the synthesis of high performance type III PLs interms how to design the pore generators, providing new perspectives for their applications in gas separation.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 6","pages":"Article 119292"},"PeriodicalIF":7.2,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097774","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

Natural adsorbents for sample pretreatment: Mechanism insights, greenness assessment and practical applications 样品前处理的天然吸附剂：机理见解，绿色评估和实际应用

IF 7.2 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-09-13 DOI: 10.1016/j.jece.2025.119268

Qing Wang , Chun-Yu Zhang , Shao-Feng Tang, Chang-Jiang-Sheng Lai

{"title":"Natural adsorbents for sample pretreatment: Mechanism insights, greenness assessment and practical applications","authors":"Qing Wang , Chun-Yu Zhang , Shao-Feng Tang, Chang-Jiang-Sheng Lai","doi":"10.1016/j.jece.2025.119268","DOIUrl":"10.1016/j.jece.2025.119268","url":null,"abstract":"<div><div>Sample pretreatment, as a core component of trace analysis in complex matrices, plays a pivotal role in driving the sustainable development of analytical chemistry through green innovation. Natural adsorbents (N-Ads), represented by natural materials and biowaste such as plant fibers and biochar, have demonstrated immense potential in sample pretreatment owing to their superior environmental compatibility, reusability, and high adsorption efficiency. This review underscores the urgency of addressing key challenges in N-Ads application for sample pretreatment, such as insufficient elucidation of multi-mechanistic synergies, the incompleteness of green assessment systems, and the inadequate interference resistance in complex matrices for N-Ads being applied in sample pretreatment. This work provides a systematic review of the innovative applications of N-Ads in the pretreatment of biological, food, and environmental samples, elaborating on their applications and performance characteristics in various extraction methods including solid-phase extraction, magnetic solid-phase extraction, and solid-phase microextraction. Furthermore, it elucidates the multidimensional mechanisms of adsorbent-analyte interactions and the research methodologies employed. In light of the current inadequacies in the greenness evaluation systems for N-Ads, this review explores the value and potential application of green analytical chemistry indicators in quantifying the greenness of pretreatment methods. By addressing the limitations of traditional reviews, this work reveals critical scientific challenges in adsorbent preparation, application scenarios, mechanistic interpretation, and ecological benefit evaluation through critical analysis, thereby offering interdisciplinary integration pathways for further advancements in N-Ads-based sample pretreatment.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 6","pages":"Article 119268"},"PeriodicalIF":7.2,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097600","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

Sustainable lactic acid production from glycerol via hydrothermal catalysis over highly dispersed cu nanoparticles on bio-tar derived carbon 生物焦油衍生碳上高度分散的铜纳米颗粒水热催化甘油可持续生产乳酸

IF 7.2 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-09-13 DOI: 10.1016/j.jece.2025.119275

Han Xu , Qi Li , Zhihao Bi, Donghai Xu, Yang Guo

{"title":"Sustainable lactic acid production from glycerol via hydrothermal catalysis over highly dispersed cu nanoparticles on bio-tar derived carbon","authors":"Han Xu , Qi Li , Zhihao Bi, Donghai Xu, Yang Guo","doi":"10.1016/j.jece.2025.119275","DOIUrl":"10.1016/j.jece.2025.119275","url":null,"abstract":"<div><div>Copper-based catalysts have emerged as promising candidates for the catalytic conversion of glycerol to lactic acid (LA), owing to their cost-effectiveness and high activity. However, optimizing both high conversion efficiency and selectivity in catalytic design remains a significant challenge in the catalytic design for this synthesis. In this study, we developed a highly efficient Cu-based catalyst (Cu/BC) was by optimizing copper loading on biomass tar-derived porous carbon supports. Through systematic investigation of reaction parameters and copper loading effects, the results revealed that the 20 % Cu/BC catalyst achieved exceptional performance, achieving 98.97 % glycerol conversion and 89.88 % LA selectivity under optimized conditions (210°C, 20 h). This superior activity stems from the highly dispersed metallic copper active sites, which enhances reaction kinetics and product selectivity. Notably, excessive copper loading (>20 %) induced metal aggregation, pore blockage, and diffusion limitations, thereby diminishing catalytic performance and promoted side reactions. Kinetic analysis further revealed that the 20 % Cu/BC catalyst exhibited a lower activation energy (110.5 kJ·mol<sup>−1</sup>) compared to the 25 % Cu/BC counterpart (125.8 kJ·mol<sup>−1</sup>) in the disappearance of LA, confirming its superior catalytic efficiency. This work not only advances rational design of non-noble metal catalysts but also provides a sustainable strategy for value-added LA production.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 6","pages":"Article 119275"},"PeriodicalIF":7.2,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061007","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

Graphite decorated Pt/α-Fe2O3 composite with outstanding CO oxidation performance in the presence of SO2 and moisture 在SO2和水分存在下，石墨修饰Pt/α-Fe2O3复合材料具有优异的CO氧化性能

IF 7.2 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-09-13 DOI: 10.1016/j.jece.2025.119273

Xinru Qi, Xiaoxuan Fan, Liang Li

引用次数: 0

Towards sustainable polyethylene terephthalate (PET) recycling: Kinetic modelling, parametric analysis, and process optimisation 迈向可持续的聚对苯二甲酸乙二醇酯（PET）回收：动力学建模，参数分析和过程优化

IF 7.2 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-09-13 DOI: 10.1016/j.jece.2025.119272

Luqman Umdagas , Rafael Orozco , Kieran Heeley , Bushra Al-Duri

{"title":"Towards sustainable polyethylene terephthalate (PET) recycling: Kinetic modelling, parametric analysis, and process optimisation","authors":"Luqman Umdagas , Rafael Orozco , Kieran Heeley , Bushra Al-Duri","doi":"10.1016/j.jece.2025.119272","DOIUrl":"10.1016/j.jece.2025.119272","url":null,"abstract":"<div><div>Polyethylene terephthalate (PET) poses persistent environmental challenges due to its accumulation in waste streams. This study investigates the kinetics and mechanistic pathways of PET hydrolysis in subcritical water (225 – 300) °C as a sustainable chemical recycling route. A mechanistic model incorporating non-catalytic hydrolysis, autocatalysis by in-situ terephthalic acid (TPA), and TPA degradation was developed and fitted to experimental data, showing excellent agreement (R² > 0.99). Distinct activation energies were determined for non-catalytic (112.7 kJ·mol<sup>−1</sup>), autocatalytic (48.7 kJ·mol<sup>−1</sup>), and degradation (38.4 kJ·mol<sup>−1</sup>) pathways. Experiments revealed complete PET conversion within (20 – 40) min at 275 °C, with recovery of > 97 % pure TPA directly without additional purification. Regime classification using dimensionless parameters (autocatalytic efficiency, <em>K</em>; degradation severity, <em>D</em>) identified 275 °C as the optimal condition balancing reaction rate and product stability. Parametric studies on residence time, PET-to-water ratio, agitation, heating profile, and morphology confirmed the robustness of the process. Catalyst effects were also examined, with both TPA and zinc acetate enhancing depolymerisation efficiency. Environmental performance, evaluated via energy economy coefficients and E-factors, highlighted favourable energy input and low waste generation. This work uniquely integrates experimental validation, mechanistic kinetic modelling, and dimensionless regime analysis to advance the mechanistic understanding and practical optimisation of PET hydrolysis. The findings provide a quantitative foundation for reactor design and process intensification, supporting the industrial development of closed-loop PET recycling aligned with green chemistry and circular economy principles.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 6","pages":"Article 119272"},"PeriodicalIF":7.2,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097171","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

Leaching behaviour, kinetics and reactivity of calcined drilling cuttings in low-alkaline environments: Experimental and mechanistic insights 低碱性环境下煅烧钻屑的浸出行为、动力学和反应性：实验和机理见解

IF 7.2 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-09-13 DOI: 10.1016/j.jece.2025.119261

Chao Liu , Yong Ma , Yao Wang , Panli You , Kaiyuan Mei , Chunmei Zhang , Xiaowei Cheng

{"title":"Leaching behaviour, kinetics and reactivity of calcined drilling cuttings in low-alkaline environments: Experimental and mechanistic insights","authors":"Chao Liu , Yong Ma , Yao Wang , Panli You , Kaiyuan Mei , Chunmei Zhang , Xiaowei Cheng","doi":"10.1016/j.jece.2025.119261","DOIUrl":"10.1016/j.jece.2025.119261","url":null,"abstract":"<div><div>This study comprehensively investigates the leaching behaviours and kinetics of calcined drilling cuttings (CDCs) in low-alkaline environments. It delves into how varying concentrations of NaOH, leaching durations and temperatures impact the leaching ratios of key elements such as Si, Al, Ca and Fe from CDCs. Advanced analytical techniques, including X-ray diffraction (XRD), scanning electron microscopy–energy-dispersive X-ray spectroscopy (SEM-EDS) and backscattered electron imaging and analysis (BSE-IA), are used to characterise the phase composition, microstructure and reactivity of CDCs. The results indicate that NaOH concentration, leaching time and temperature considerably influence the leaching behaviours of CDCs, with temperature being the dominant factor. The leaching kinetics analysis reveals that CDC leaching is governed by reactant diffusion, with activation energies for Si and Al determined to be 32.29 and 26.72 kJ/mol, respectively. BSE-IA sheds light on the distribution of different phases within the CDCs and their reactivity order (Phase I > Phase II > Phase III). This study demonstrates that CDCs can be used as supplementary cementitious materials in cement systems, although further assessment of their environmental risks is necessary. This research lays a solid theoretical foundation for the application of CDCs as cement admixtures and proposes a method for the rapid evaluation of their reactivity.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 6","pages":"Article 119261"},"PeriodicalIF":7.2,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097173","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

Effect of pre-oxidation on the release of brominated DBP precursors from microplastics and its fluorescence characteristics 预氧化对微塑料中溴化DBP前体释放的影响及其荧光特性

IF 7.2 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-09-13 DOI: 10.1016/j.jece.2025.119251

Yun Kyung Lee , Tanju Karanfil , Xiaowei Li , Jin Hur

{"title":"Effect of pre-oxidation on the release of brominated DBP precursors from microplastics and its fluorescence characteristics","authors":"Yun Kyung Lee , Tanju Karanfil , Xiaowei Li , Jin Hur","doi":"10.1016/j.jece.2025.119251","DOIUrl":"10.1016/j.jece.2025.119251","url":null,"abstract":"<div><div>The widespread occurrence of microplastics (MPs) in aquatic environments has raised concerns about their interactions with water treatment processes, particularly through the release of microplastic-derived dissolved organic matter (MP-DOM) that may serve as precursors to toxic disinfection byproducts (DBPs). While the leaching of DBP precursors from MPs has been documented, the influence of halogenated plastic additives under oxidative weathering conditions remains poorly understood. This study investigates the effects of typical pre-oxidation treatments—ultraviolet (UV) irradiation, chlorination (Cl₂), and their combination—on the release and transformation of MP-DOM from polyethylene (PE) and polylactic acid (PLA), and its contribution to brominated DBP (Br-DBP) formation during subsequent chloramination. The roles of both inorganic bromide ions and a model brominated flame retardant (decabromodiphenyl ethane, DBDPE) were evaluated as bromine sources. UV-based treatments significantly enhanced the release of humic-like fluorescent components from MPs and increased Br-DBP formation by up to 100-fold, particularly in the presence of brominated additives. While bromide ions directly promoted Br-DBP generation, DBDPE acted as a latent bromine source, releasing reactive bromine only under oxidative conditions. PE-derived DOM exhibited stronger correlations between fluorescence properties and DBP formation metrics, including estimated cytotoxicity, compared to PLA-DOM. These findings underscore the need to monitor MP-DOM characteristics in water treatment systems, as oxidative pre-treatment can enhance the release of reactive DOM fractions and increase Br-DBP risks, particularly in the presence of brominated plastic additives.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 6","pages":"Article 119251"},"PeriodicalIF":7.2,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097174","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

High-efficiency Cr(VI) decontamination using glutaraldehyde-crosslinked chitosan/biochar composites: Performance optimization and mechanistic insights 戊二醛交联壳聚糖/生物炭复合材料高效去除Cr(VI)：性能优化及机理研究

IF 7.2 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-09-12 DOI: 10.1016/j.jece.2025.119253

Tiancheng Wu , Xuexia Huang , Ying-heng Fei , Dinggui Luo , Qihang Wu , Yu Liu , Lezhang Wei , Tangfu Xiao

{"title":"High-efficiency Cr(VI) decontamination using glutaraldehyde-crosslinked chitosan/biochar composites: Performance optimization and mechanistic insights","authors":"Tiancheng Wu , Xuexia Huang , Ying-heng Fei , Dinggui Luo , Qihang Wu , Yu Liu , Lezhang Wei , Tangfu Xiao","doi":"10.1016/j.jece.2025.119253","DOIUrl":"10.1016/j.jece.2025.119253","url":null,"abstract":"<div><div>Industrial effluents containing Cr(VI) pose a severe threat to the natural environment and human health. To address this challenge, glutaraldehyde-crosslinked chitosan-modified biochars (GA-CSBB and GA-CSRB) were fabricated via a facile synthesis route, uniquely employing glutaraldehyde as a crosslinker to enhance chitosan loading and adsorption capacity. SEM/BET analyses demonstrated rougher surfaces and enlarged pores in GA-CSBB/GA-CSRB, enhancing active site accessibility. Additionally, a greater abundance of surface functional groups significantly facilitated the adsorption process. Adsorption follows Langmuir isotherm and pseudo-second-order kinetics, indicating chemisorption-controlled monolayer adsorption. Maximum Langmuir capacities reach 123.5 and 144.3 mg/g for GA-CSBB and GA-CSRB, aligning closely with experimental results (131.8 and 140.2 mg/g). At optimal conditions (25 °C, pH 2, 40 mg/L initial Cr(VI)), GA-CSBB and GA-CSRB achieve 20.1 and 20.9 mg/g adsorption capacities, corresponding to complete/near-complete removal (100 % and 99.1 %). Remarkably, both adsorbents retain > 86 % removal efficiency across pH 2–8 and in the presence of competitive anions (Cl<sup>-</sup>, NO<sub>3</sub><sup>-</sup>, SO<sub>4</sub><sup>2-</sup>, PO<sub>4</sub><sup>3-</sup>). By comparison, pristine biochars (BB, RB) and non-crosslinked chitosan-modified biochars (CS-BB, CS-RB) exhibit significantly lower capacities (9.0–12.8 mg/g). Comprehensive mechanistic analysis identified surface complexation, electrostatic interactions, redox reactions, and chelation mechanisms as key contributors to the removal process. In summary, this study presents a facile, eco-friendly, and highly efficient adsorbent, offering a promising strategy for the effective treatment of Cr(VI)-laden wastewater.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 6","pages":"Article 119253"},"PeriodicalIF":7.2,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097730","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

Hydroxylamine enhanced Fe(Ⅱ)-activated peracetic acid process to promote short-chain fatty acid production during sludge anaerobic fermentation 羟胺增强Fe（Ⅱ）活化过氧乙酸过程，促进污泥厌氧发酵过程中短链脂肪酸的产生

IF 7.2 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-09-12 DOI: 10.1016/j.jece.2025.119256

Jing Zhang , Yanping Zhang , Junliang Dong , Fen Li , Zhenjie Guo , Yibing Li

{"title":"Hydroxylamine enhanced Fe(Ⅱ)-activated peracetic acid process to promote short-chain fatty acid production during sludge anaerobic fermentation","authors":"Jing Zhang , Yanping Zhang , Junliang Dong , Fen Li , Zhenjie Guo , Yibing Li","doi":"10.1016/j.jece.2025.119256","DOIUrl":"10.1016/j.jece.2025.119256","url":null,"abstract":"<div><div>Short-chain fatty acids (SCFAs) production was limited by low organic matters solubilization and methanogens rapid consumption during sludge anaerobic fermentation. The HA/Fe(Ⅱ)/PAA pretreatment system was employed to solve these issues in this study. Results showed that HA/Fe(Ⅱ)/PAA pretreatment significantly enhanced the disintegration of sludge cells and EPS, improved the dissolution of organic matter and the biodegradability of sludge, thereby promoting the production of SCFAs. The optimal SCFAs production achieved with HA/Fe(Ⅱ)/PAA pretreatment was 2527.62 mg COD/L, approximately 5.14 times that of the blank group, with acetic acid accounting for 64.94 %. Further research indicated that for HA/Fe(Ⅱ)/PAA system, the introduction of HA can accelerate Fe(Ⅱ)/Fe(Ⅲ) cycle, and promote the production of active species, as ·OH, R-O·, and Fe<sup>IV</sup>O<sup>2+</sup>. Moreover, HA/Fe(Ⅱ)/PAA pretreatment significantly increased the activity of hydrolysis and acidification enzymes and inhibited the activity of methanogenic enzymes. Meanwhile, the microbial community analyses further confirmed that HA/Fe(Ⅱ)/PAA can enrich the SCFAs-forming microorganisms and inhibit SCFAs-consuming microorganisms. All of these factors were conducive to the accumulation of SCFAs. This study demonstrated that HA/Fe(Ⅱ)/PAA pretreatment can effectively promote high-level SCFAs production, providing new insights for high-value resource recovery from sludge.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 6","pages":"Article 119256"},"PeriodicalIF":7.2,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061428","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

Construction of Mn2O3/SmMn2O5 interface with tuned Mn coordination environment for efficient air pollutant elimination Mn配位环境下Mn2O3/SmMn2O5界面的构建及其对大气污染物的有效去除

IF 7.2 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-09-12 DOI: 10.1016/j.jece.2025.119254

Ruichang Xu, Qi Guo, Yun Long, Zijian Zhou, Minghou Xu

{"title":"Construction of Mn2O3/SmMn2O5 interface with tuned Mn coordination environment for efficient air pollutant elimination","authors":"Ruichang Xu, Qi Guo, Yun Long, Zijian Zhou, Minghou Xu","doi":"10.1016/j.jece.2025.119254","DOIUrl":"10.1016/j.jece.2025.119254","url":null,"abstract":"<div><div>Gaseous pollutants can be efficiently removed by the mullite-type oxides. However, the enhancement effect is greatly limited due to the introduction of disordered defects and univariate regulation of conventional modification methods. Here, through interface engineering, we have successfully constructed the interface between Mn<sub>2</sub>O<sub>3</sub> and SmMn<sub>2</sub>O<sub>5</sub>. The interface is formed during the in-situ calcination process. Various pollutants can be efficiently removed on Mn<sub>2</sub>O<sub>3</sub>/SmMn<sub>2</sub>O<sub>5</sub> due to the interfacial effect. It has been demonstrated that the Mn-O bonds on the interface are stretched and easier to break due to the interfacial effect, thereby improving the redox ability and generating active oxygen species. The interfacial effect is effective in tuning the Mn coordination environment, which is the intrinsic reason for the efficient various pollutant removal ability of Mn<sub>2</sub>O<sub>3</sub>/SmMn<sub>2</sub>O<sub>5</sub>. Specifically, Mn<sub>2</sub>O<sub>3</sub>/SmMn<sub>2</sub>O<sub>5</sub> shows one of the most promising Hg<sup>0</sup> catalytic performances compared with reported catalysts, with a 75 % and 100 % Hg<sup>0</sup> conversion rate under a space velocity of 1000000 h<sup>−1</sup> and 500000 h<sup>−1</sup>, respectively. Mn<sub>2</sub>O<sub>3</sub>/SMO also exhibits a stable Hg<sup>0</sup> conversion rate (100 %) at 100℃ for 50 h under a GHSV of 100000 h<sup>−1</sup>. This work provides guidance for the rational design of efficient catalysts for various pollutant catalytic oxidations and other environmental applications.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 6","pages":"Article 119254"},"PeriodicalIF":7.2,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145048094","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