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

Research on dust suppression technology and structural optimization of cylindrical vortex air curtains based on artificial tornado mechanism

IF 7.4 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2025-03-10 DOI: 10.1016/j.jece.2025.116119

Yanbin Yu , Lianxin Fang , Min Xiang , Wenting Cui , Sai Li , Kezhi Song

Particulate matter generated during industrial production processes has long posed a significant threat to workers’ health and safety while contaminating the surrounding environment. The columnar vortex ventilation technique has shown promise in mitigating localized dust pollution; however, its practical application is hindered by challenges such as complex device manufacturing and suboptimal dust removal efficiency. To address these issues, this study proposes a cylindrical vortex-controlled dust removal device with a simplified design and enhanced performance, achieved through the optimization of air supply modes and the structural refinement of the air supply groove. Using the Euler-Lagrange approach, a computational fluid dynamics (CFD) model was developed to simulate the coupled behavior of airflow and dust diffusion. The impact of various air supply modes and groove structures on airflow organization and dust dispersion was systematically analyzed. Results indicate that the ‘side air supply-top’ mode generates the most effective vortex field for dust removal. Among the design parameters, the width (W) of the air supply slot was found to have a more pronounced effect on the airflow field than the length (L). As W increases, the jet airflow transitions from an ‘oblique impinging jet’ to a ‘direct impinging jet’, resulting in a dust removal efficiency trend characterized by an initial increase, followed by a decrease, and then another increase. When L ≥ 50 mm, further increases in slot length stabilize the dust removal rate at approximately 85.30 %. A prototype cylindrical vortex-controlled dust removal device was constructed, and simulation results were validated through experimental testing, with an overall relative error within 13 %, confirming the high accuracy of the simulations. This research provides valuable design parameters and practical guidance for implementing columnar vortex dust control ventilation systems in industrial environments.

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引用次数: 0

Insight into the promotion effect of H2O for the simultaneous removal of NOx and methanol at low temperature over MnFe2Ox catalyst

IF 7.4 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2025-03-10 DOI: 10.1016/j.jece.2025.116113

Yunli Ji, Xuanyi Wen, Wenbo Geng, Xia An, Xu Wu

The research on the simultaneous removal of NO_x and VOCs by NH₃-SCR catalysts has garnered widespread attention. However, the stepwise removal of both gases during the co-removal process is often caused by the inconsistent activity windows. Furthermore, the presence of water vapor in flue gas adversely impacts the catalyst and greatly decreases its catalytic activity. In this study, the low-temperature catalyst MnFe₂O_x was selected to remove NO_x and methanol, with a focus on investigating the influence of H₂O on catalytic reactions. Results show that MnFe₂O_x exhibited nearly 100 % denitrification activity and methanol oxidation performance within 150–240 °C. H₂O in the atmosphere scarcely affected the performance of the synergistic removal and positively influenced N₂ generation. Catalyst characterizations conducted with or without H₂O demonstrated that nitrogen-containing gases were inhibited from adhering to the catalyst surface by the competitive adsorption of H₂O. Furthermore, the dehydrogenation of NH₃ active species to -NH₂/-NH was impeded, which reduced the likelihood of unintended reactions that generate N₂O. The DRIFTs analysis of the simultaneous removal reaction indicates that the presence of H₂O facilitates the formation of significant intermediates like methyl nitrite and isocyanate from methanol, which could hydrolyze to produce NH₃, CO and other reducing gases that would react with NO_x to maintain NO_x removal efficiency. These results offer direction for further research into the influence of water vapor in flue gas on the co-removal of NO_x and VOCs.

{"title":"Insight into the promotion effect of H2O for the simultaneous removal of NOx and methanol at low temperature over MnFe2Ox catalyst","authors":"Yunli Ji, Xuanyi Wen, Wenbo Geng, Xia An, Xu Wu","doi":"10.1016/j.jece.2025.116113","DOIUrl":"10.1016/j.jece.2025.116113","url":null,"abstract":"<div><div>The research on the simultaneous removal of NO<sub>x</sub> and VOCs by NH<sub>3</sub>-SCR catalysts has garnered widespread attention. However, the stepwise removal of both gases during the co-removal process is often caused by the inconsistent activity windows. Furthermore, the presence of water vapor in flue gas adversely impacts the catalyst and greatly decreases its catalytic activity. In this study, the low-temperature catalyst MnFe<sub>2</sub>O<sub>x</sub> was selected to remove NO<sub>x</sub> and methanol, with a focus on investigating the influence of H<sub>2</sub>O on catalytic reactions. Results show that MnFe<sub>2</sub>O<sub>x</sub> exhibited nearly 100 % denitrification activity and methanol oxidation performance within 150–240 °C. H<sub>2</sub>O in the atmosphere scarcely affected the performance of the synergistic removal and positively influenced N<sub>2</sub> generation. Catalyst characterizations conducted with or without H<sub>2</sub>O demonstrated that nitrogen-containing gases were inhibited from adhering to the catalyst surface by the competitive adsorption of H<sub>2</sub>O. Furthermore, the dehydrogenation of NH<sub>3</sub> active species to -NH<sub>2</sub>/-NH was impeded, which reduced the likelihood of unintended reactions that generate N<sub>2</sub>O. The DRIFTs analysis of the simultaneous removal reaction indicates that the presence of H<sub>2</sub>O facilitates the formation of significant intermediates like methyl nitrite and isocyanate from methanol, which could hydrolyze to produce NH<sub>3</sub>, CO and other reducing gases that would react with NO<sub>x</sub> to maintain NO<sub>x</sub> removal efficiency. These results offer direction for further research into the influence of water vapor in flue gas on the co-removal of NO<sub>x</sub> and VOCs.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116113"},"PeriodicalIF":7.4,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143621432","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

Bioplastic production using waste macroalgal biomass: A holistic review on challenges, prospects, economic viability and sustainability analysis

IF 7.4 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2025-03-10 DOI: 10.1016/j.jece.2025.116108

A. Anli Dino , G. Kishore , Samuel Lalthazuala Rokhum , Gurunathan Baskar

Plastic pollution has emerged as a critical environmental issue, underscoring the urgent need for sustainable alternatives such as bioplastics. While traditional bioplastics are typically derived from sources like corn starch, sugarcane bagasse, wheat starch, and chitosan, newer options like macroalgae are gaining attraction as viable feedstocks. This comprehensive review delves into the diverse advantages of utilizing macroalgae-based bioplastics, including their rapid growth rate, minimal land requirements, and the potential for utilizing waste biomass. These inherent benefits position macroalgae as an appealing source, particularly for industries such as packaging, agriculture, and medical applications like wound dressings. Moreover, the greenhouse gas emissions associated with macroalgae bioplastics are significantly lower than those generated by conventional plastics. From an economic standpoint, the scalability of macroalgae-based bioplastic production holds promises for cost-effectiveness. However, achieving competitive costs hinges on advancements in cultivation and extraction techniques. Sustainability assessments further underscore the environmental promise of macroalgae-based bioplastics, particularly if energy-efficient processes are adopted to mitigate emissions and environmental impact. Despite the encouraging outlook, several key technical challenges must be addressed, such as refining extraction methods and enhancing the mechanical properties of macroalgae-based bioplastics to meet industry standards. This review emphasizes the critical role of interdisciplinary research and cross-sector collaboration in surmounting these obstacles and advancing a circular economy. The development of bioplastics from macroalgae presents a compelling opportunity to combat plastic pollution while simultaneously enhancing environmental and economic sustainability.

{"title":"Bioplastic production using waste macroalgal biomass: A holistic review on challenges, prospects, economic viability and sustainability analysis","authors":"A. Anli Dino , G. Kishore , Samuel Lalthazuala Rokhum , Gurunathan Baskar","doi":"10.1016/j.jece.2025.116108","DOIUrl":"10.1016/j.jece.2025.116108","url":null,"abstract":"<div><div>Plastic pollution has emerged as a critical environmental issue, underscoring the urgent need for sustainable alternatives such as bioplastics. While traditional bioplastics are typically derived from sources like corn starch, sugarcane bagasse, wheat starch, and chitosan, newer options like macroalgae are gaining attraction as viable feedstocks. This comprehensive review delves into the diverse advantages of utilizing macroalgae-based bioplastics, including their rapid growth rate, minimal land requirements, and the potential for utilizing waste biomass. These inherent benefits position macroalgae as an appealing source, particularly for industries such as packaging, agriculture, and medical applications like wound dressings. Moreover, the greenhouse gas emissions associated with macroalgae bioplastics are significantly lower than those generated by conventional plastics. From an economic standpoint, the scalability of macroalgae-based bioplastic production holds promises for cost-effectiveness. However, achieving competitive costs hinges on advancements in cultivation and extraction techniques. Sustainability assessments further underscore the environmental promise of macroalgae-based bioplastics, particularly if energy-efficient processes are adopted to mitigate emissions and environmental impact. Despite the encouraging outlook, several key technical challenges must be addressed, such as refining extraction methods and enhancing the mechanical properties of macroalgae-based bioplastics to meet industry standards. This review emphasizes the critical role of interdisciplinary research and cross-sector collaboration in surmounting these obstacles and advancing a circular economy. The development of bioplastics from macroalgae presents a compelling opportunity to combat plastic pollution while simultaneously enhancing environmental and economic sustainability.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 2","pages":"Article 116108"},"PeriodicalIF":7.4,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601109","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

Comprehensive analysis on impact of various catalytic assemblies for photodegradation of levofloxacin antibiotic from aquatic environments: Constructing strategies and surface/interface engineering, limitations, new trends, and future outlooks

IF 7.4 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2025-03-10 DOI: 10.1016/j.jece.2025.116071

Davood Habibi , Behzad Bornas , Ali Reza Faraji , Aida Bardaz , Elahe Sadeghi Madiseh , Mohadeseh Pakniat , Mohammad Mahdi Ghazimoradi , Farzan Beigi

Levofloxacin (LEV) antibiotics have become a worldwide concern due to their ecotoxicity, chemical stability, and antibacterial resistance potential. Photocatalysis, as a green, sustainable, and economical method owing to the conversion of low-density renewable solar energy into high-density chemical and electrical power, is the frequently reported method to address environmental issues. However, after case investigation and much research on heterogeneous photocatalysts, it has not advanced from the bench to pilot scale and corresponding practical applications due to unfavorable carrier transfer dynamics and poor visible light absorption. Surface or interface is fundamental in enhancing visible light-harvesting, decreasing interfacial resistance, boosting interface interaction due to chemical reactions, and charge carriers migration on the surface and interface of different semiconductors (SCs). However, photocatalytic quantum efficiency and surface charge mobility of photocatalysts were still low and insufficient. Unfortunately, most of the literature has focused on innumerable cutting-edge processes, bandgap (BG) engineering, and suppression of charge recombination after light irradiation. However, the role and influence of surface/interface engineering have lagged. For the first time, this review paper notably concentrated on the various surface/interface designs (e.g., oxygen vacancies, doping, Z-scheme, S-scheme, Schottky junctions, etc.), synergistic advancement mechanism of surface/interface parameters and their significance in enhancing the thermodynamics functions, kinetic rate, stability of engineering-modified photocatalysts in the removal of LEV even in trace amounts with focus on the degradation pathways. Ultimately, the challenges/opportunities of photocatalysis investigation regarding surface/interface engineering will be debated to supply an advantageous research direction.

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引用次数: 0

Sludge disintegration through advanced rotational hydrodynamic cavitation reactor for improvement of biogas production

IF 7.4 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2025-03-10 DOI: 10.1016/j.jece.2025.116116

Hyungjoon Son , Sungyoun Na , Ming Guo , Dang Khoi Le , Joon Yong Yoon , Xun Sun

Sustainable sludge management in wastewater treatment plants (WWTPs) is vital. This study evaluated an advanced rotational hydrodynamic cavitation reactor (ARHCR) for its impact on anaerobic digestion (AD). Sludge was treated under varying rotational speeds, inlet pressures, and pressure drops, followed by biochemical methane potential (BMP) tests to assess AD performance. The results demonstrated the significant biogas yield improvement (14.4 % to 96.5 %) due to effective sludge disintegration, with rotational speed being the most influential factor. Lower-severity conditions may maximize profits by reducing bio-refractory substance formation. A comparative analysis demonstrated the ARHCR’s scalability advantage, particularly due to its effective hydrodynamic cavitation generation. Additionally, dimensional analysis confirmed its scale-up potential over similar reactors. An energy balance study revealed a 20 % increase in energy efficiency for AD with the ARHCR, supporting its feasibility as an efficient and sustainable sludge treatment solution. These findings highlight the ARHCR’s potential for enhancing WWTP sustainability.

{"title":"Sludge disintegration through advanced rotational hydrodynamic cavitation reactor for improvement of biogas production","authors":"Hyungjoon Son , Sungyoun Na , Ming Guo , Dang Khoi Le , Joon Yong Yoon , Xun Sun","doi":"10.1016/j.jece.2025.116116","DOIUrl":"10.1016/j.jece.2025.116116","url":null,"abstract":"<div><div>Sustainable sludge management in wastewater treatment plants (WWTPs) is vital. This study evaluated an advanced rotational hydrodynamic cavitation reactor (ARHCR) for its impact on anaerobic digestion (AD). Sludge was treated under varying rotational speeds, inlet pressures, and pressure drops, followed by biochemical methane potential (BMP) tests to assess AD performance. The results demonstrated the significant biogas yield improvement (14.4 % to 96.5 %) due to effective sludge disintegration, with rotational speed being the most influential factor. Lower-severity conditions may maximize profits by reducing bio-refractory substance formation. A comparative analysis demonstrated the ARHCR’s scalability advantage, particularly due to its effective hydrodynamic cavitation generation. Additionally, dimensional analysis confirmed its scale-up potential over similar reactors. An energy balance study revealed a 20 % increase in energy efficiency for AD with the ARHCR, supporting its feasibility as an efficient and sustainable sludge treatment solution. These findings highlight the ARHCR’s potential for enhancing WWTP sustainability.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116116"},"PeriodicalIF":7.4,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143641876","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

Boosting solar hydrogen generation by growth of UiO-based MOF on metal sulfide surface

IF 7.4 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2025-03-10 DOI: 10.1016/j.jece.2025.116141

Zhiyun Dong, Du Li, Tao Han, Xueli Zhao, Xinxing Lei

The development of well-organized photocatalysts for solar-driven water splitting to produce hydrogen remains a significant challenge. For the first time, this work investigates a series of dual heterojunctions including metal sulfides (namely CdS, ZnS and Bi₂S₃), and a zirconium-based metal-organic framework (MOF), UiO-67, as potential photocatalysts for hydrogen evolution under solar light. A range of chemical scavengers were employed to facilitate charge carrier separation and enhance photocatalytic activity. The highest hydrogen production rate of 487.5 μmol g⁻¹ h⁻¹ was obtained in the presence of the CdS/UiO-67-NH₂ composite without any cocatalyst and with a hole scavenger triethanolamine (TEOA) for four hours. This report presents the highest hydrogen evolution rate achieved to date within the family of UiO-67-based MOFs, surpassing previously reported values. Notably, neither CdS nor UiO-67-NH₂ exhibited significant hydrogen production individually, suggesting a synergistic effect between the two components. In-depth characterization of the CdS/UiO-67-NH₂ heterojunction revealed the formation of a n-type band alignment, which effectively promotes the separation of photogenerated electron-hole pairs and enhances charge carrier transfer. The findings of this study provide valuable insights into the design and development of advanced MOF-based photocatalysts for solar hydrogen production.

{"title":"Boosting solar hydrogen generation by growth of UiO-based MOF on metal sulfide surface","authors":"Zhiyun Dong, Du Li, Tao Han, Xueli Zhao, Xinxing Lei","doi":"10.1016/j.jece.2025.116141","DOIUrl":"10.1016/j.jece.2025.116141","url":null,"abstract":"<div><div>The development of well-organized photocatalysts for solar-driven water splitting to produce hydrogen remains a significant challenge. For the first time, this work investigates a series of dual heterojunctions including metal sulfides (namely CdS, ZnS and Bi<sub>2</sub>S<sub>3</sub>), and a zirconium-based metal-organic framework (MOF), UiO-67, as potential photocatalysts for hydrogen evolution under solar light. A range of chemical scavengers were employed to facilitate charge carrier separation and enhance photocatalytic activity. The highest hydrogen production rate of 487.5 μmol g⁻¹ h⁻¹ was obtained in the presence of the CdS/UiO-67-NH<sub>2</sub> composite without any cocatalyst and with a hole scavenger triethanolamine (TEOA) for four hours. This report presents the highest hydrogen evolution rate achieved to date within the family of UiO-67-based MOFs, surpassing previously reported values. Notably, neither CdS nor UiO-67-NH<sub>2</sub> exhibited significant hydrogen production individually, suggesting a synergistic effect between the two components. In-depth characterization of the CdS/UiO-67-NH<sub>2</sub> heterojunction revealed the formation of a n-type band alignment, which effectively promotes the separation of photogenerated electron-hole pairs and enhances charge carrier transfer. The findings of this study provide valuable insights into the design and development of advanced MOF-based photocatalysts for solar hydrogen production.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116141"},"PeriodicalIF":7.4,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628696","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

Mechanistic insights into the role of ether-bearing collectors in enhancing low-rank coal flotation: Experimental and molecular simulation

IF 7.4 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2025-03-10 DOI: 10.1016/j.jece.2025.116128

Jiaqian Luo , Yulei Li , Yingwei Wang , Baoxun Zhao , Guosheng Li , Lijun Deng , Yijun Cao

Low-rank coal (LRC) exhibits poor floatability due to its porous structure and oxygen-rich surfaces, requiring high doses of ecologically harmful traditional collectors. Understanding coal-reagent interactions is crucial for utilizing green alternatives with targeted interfacial regulation. In this study, an efficient reagent (ADO) composed of ether-based surfactant fatty alcohol polyoxyethylene ether (AEO-9) and diesel oil (DO) is introduced to improve the flotation performance of LRC. Flotation experiments show that ADO significantly outperforms DO, achieving a maximum recovery rate of 95.16 %, representing an increase of more than 30 % compared to DO. Microscopic observations confirm that AEO-9 reduced the collector droplet size from 10.6 μm to 3.35 μm in solution and enhanced its emulsification performance. ADO-modified coal exhibited superior wettability with an increased contact angle and accelerated spreading compared to DO. FTIR and XPS analyses revealed a significant reduction in hydrophilic groups after ADO modification compared to DO, accompanied by an increase in hydrophobic groups. Moreover, charge distribution analysis shows that AEO-9 enhances ADO adsorption on coal surfaces through hydrogen bonding interactions. The adsorption energy of ADO is substantially lower than that of DO. Molecular dynamics results show that the diffusion coefficient of water molecules in the ADO system is 1.930 × 10⁻⁹ m²/s, compared to 2.170 × 10⁻⁹ m²/s in the DO, confirming ADO’s superior ability to enhance the hydrophobicity of low-rank coal surfaces. This study significantly improves the flotation efficiency of LRC by proposing a novel collector with biodegradability and elucidates the mechanism of enhancing flotation performance from a microscopic perspective.

{"title":"Mechanistic insights into the role of ether-bearing collectors in enhancing low-rank coal flotation: Experimental and molecular simulation","authors":"Jiaqian Luo , Yulei Li , Yingwei Wang , Baoxun Zhao , Guosheng Li , Lijun Deng , Yijun Cao","doi":"10.1016/j.jece.2025.116128","DOIUrl":"10.1016/j.jece.2025.116128","url":null,"abstract":"<div><div>Low-rank coal (LRC) exhibits poor floatability due to its porous structure and oxygen-rich surfaces, requiring high doses of ecologically harmful traditional collectors. Understanding coal-reagent interactions is crucial for utilizing green alternatives with targeted interfacial regulation. In this study, an efficient reagent (ADO) composed of ether-based surfactant fatty alcohol polyoxyethylene ether (AEO-9) and diesel oil (DO) is introduced to improve the flotation performance of LRC. Flotation experiments show that ADO significantly outperforms DO, achieving a maximum recovery rate of 95.16 %, representing an increase of more than 30 % compared to DO. Microscopic observations confirm that AEO-9 reduced the collector droplet size from 10.6 μm to 3.35 μm in solution and enhanced its emulsification performance. ADO-modified coal exhibited superior wettability with an increased contact angle and accelerated spreading compared to DO. FTIR and XPS analyses revealed a significant reduction in hydrophilic groups after ADO modification compared to DO, accompanied by an increase in hydrophobic groups. Moreover, charge distribution analysis shows that AEO-9 enhances ADO adsorption on coal surfaces through hydrogen bonding interactions. The adsorption energy of ADO is substantially lower than that of DO. Molecular dynamics results show that the diffusion coefficient of water molecules in the ADO system is 1.930 × 10⁻⁹ m²/s, compared to 2.170 × 10⁻⁹ m²/s in the DO, confirming ADO’s superior ability to enhance the hydrophobicity of low-rank coal surfaces. This study significantly improves the flotation efficiency of LRC by proposing a novel collector with biodegradability and elucidates the mechanism of enhancing flotation performance from a microscopic perspective.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116128"},"PeriodicalIF":7.4,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628698","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

Preparation, stability, and enhanced CO2 absorption and desorption of nanofluids: Review and perspectives

IF 7.4 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2025-03-08 DOI: 10.1016/j.jece.2025.116056

Zhenhua Fang , Hongyu Ge , Yao Lu , Xiaohua Liu , Zhien Zhang

In recent years, the continuous and substantial emission of carbon dioxide (CO₂) has become a significant environmental concern. To deal with this problem, Carbon capture, utilization, and storage (CCUS) technologies have been developed, with carbon capture representing both the foundational and most cost-intensive component of CCUS. Therefore, enhancing the efficiency of carbon capture and reducing associated costs is crucial. Nanofluids have attracted considerable attention from researchers due to their remarkable performance in enhancing CO₂ absorption. This paper summarizes the preparation methods for nanofluids, strategies to improve their stability, and techniques for assessing stability. It discusses the mechanisms of enhanced CO₂ absorption by nanofluids and analyzes the factors influencing CO₂ absorption, categorized into elements of the nanofluid itself and operational parameters of the absorption system. Importantly, these influencing factors are interrelated and may collectively impact the overall absorption process. This paper includes a quantitative analysis of the factors influencing the absorption performance of nanofluids, a topic not previously addressed in prior reviews. It also highlights unique insights from simulation studies on CO₂ absorption enhancement by nanofluids. The paper gives the mechanisms through which nanofluids promote CO₂ desorption, along with the factors affecting the desorption efficiency. Lastly, it demonstrates the stability of nanoparticles in alkaline base fluids and the long-term CO₂ absorption performance of nanofluids during the absorption-desorption cycle, topics not previously reviewed. This work will assist new researchers in understanding the field and provide direction for future research endeavors.

近年来，二氧化碳（CO2）的持续和大量排放已成为一个重大的环境问题。为解决这一问题，人们开发了碳捕集、利用和封存（CCUS）技术，其中碳捕集既是 CCUS 的基础部分，也是成本最密集的部分。因此，提高碳捕获效率并降低相关成本至关重要。纳米流体因其在提高二氧化碳吸收方面的显著性能而备受研究人员的关注。本文概述了纳米流体的制备方法、提高其稳定性的策略以及评估稳定性的技术。本文讨论了纳米流体增强二氧化碳吸收的机理，并分析了影响二氧化碳吸收的因素，这些因素分为纳米流体本身的要素和吸收系统的运行参数。重要的是，这些影响因素相互关联，可能共同影响整个吸收过程。本文对纳米流体吸收性能的影响因素进行了定量分析，这是之前的综述中没有涉及的主题。本文还重点介绍了纳米流体增强二氧化碳吸收模拟研究的独特见解。论文介绍了纳米流体促进二氧化碳解吸的机制，以及影响解吸效率的因素。最后，论文论证了纳米粒子在碱性基液中的稳定性，以及纳米流体在吸收-解吸循环过程中长期吸收二氧化碳的性能，这些都是以前未曾讨论过的话题。这项工作将有助于新研究人员了解这一领域，并为未来的研究工作提供方向。

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引用次数: 0

Evaluating emerging pollutant removal in a scale-down high rate algae pond

IF 7.4 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2025-03-08 DOI: 10.1016/j.jece.2025.116010

Félix Gaspar Gonzalo Ibrahim , Rebeca López-Serna , Raúl Muñoz Torre , Ana Cabrerizo Pastor , Ignacio de Godos Crespo

Efficient wastewater treatment processes should provide removal of contaminants of emerging concern at low operational and installation costs. Microalgae based systems are one of the most promising low cost technologies. However, the strong impact of environmental conditions, that impact the performance, have limited the implementation in urban wastewater treatment and the capacity of pollutant removal has been documented under wide range of conditions (lab scale and outdoor). This study evaluates the use of microalgae cultures for the removal of contaminants of emerging concern using a scale-down system that reproduce outdoor conditions (light and mass transfer). Antimicrobials and anti-inflammatory drugs were efficiently removed, while preservatives, hormones, lipid regulators and other chemicals presented moderate or low eliminations. Antibiotics, except of tiamulin, were poorly removed. Biosorption into algal-bacterial biomass played an important role in pollutant removal. Light mediated breakdown was limited to pollutants sensitive to visible light since no UV radiation was used. The capacity of algae ponds for the removal of several of the contaminants present in sewage was demonstrated in spite of the changes in the microbial populations due to the seasonality.

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引用次数: 0

Advances in selective heavy metal removal from water using biochar: A comprehensive review of mechanisms and modifications

IF 7.4 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2025-03-07 DOI: 10.1016/j.jece.2025.116099

Kai Meng , Yingbo Dong , Junfei Liu , Jiquan Xie , Qi Jin , Yanrong Lu , Hai Lin

Heavy metals are common pollutants in the aquatic environment that are difficult to degrade and harmful. Biochar has emerged as a promising material for heavy metal remediation in water due to its advantages such as high surface area, strong adsorption capacity, and low cost. However, current research primarily focuses on single-pollutant systems, whereas actual water bodies often contain coexisting multiple metal ions. Competitive adsorption among these ions significantly interferes with the selective removal efficiency of biochar. This paper systematically reviews the latest advances in biochar-based selective adsorption materials, and explores the influence of inherent properties such as feedstock type, pore structure, and surface functional groups on adsorption performance. It reveals key mechanisms including surface complexation, ion exchange, and electrostatic attraction, and summarizes the remarkable effects of modification techniques such as acid treatment and metal impregnation. In addition, this paper analyzes the selective adsorption behaviors and mechanisms of biochar toward typical heavy metals such as cadmium, lead, and chromium. Finally, it highlights current research gaps, including uncertainties in biochar production, application, long-term stability, and environmental risks, while also outlining future research directions. This work aims to provide theoretical guidance and technical support for the design and application of biochar materials.

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引用次数: 0