Journal of Environmental Chemical Engineering最新文献_第4页

Degradable itaconic acid-based polyurethane with excellent sustained release of urea for agricultural applications

IF 7.4 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-03-12 DOI: 10.1016/j.jece.2025.116131

Yuqing Wang , Mengqiu Quan , Genzheng Sha , Junming Huang , Minghui Cui , Xiaoqing Li , Jin Zhu , Jing Chen

{"title":"Degradable itaconic acid-based polyurethane with excellent sustained release of urea for agricultural applications","authors":"Yuqing Wang , Mengqiu Quan , Genzheng Sha , Junming Huang , Minghui Cui , Xiaoqing Li , Jin Zhu , Jing Chen","doi":"10.1016/j.jece.2025.116131","DOIUrl":"10.1016/j.jece.2025.116131","url":null,"abstract":"<div><div>Thermoset polyurethanes find applications in various industries due to their exceptional performance resulting from their permanent cross-linked structure. However, thermoset polyurethanes are all obtained by chemical cross-linking, and their permanent network structure cannot be recycled or reprocessed. This results in the waste of non-renewable petroleum resources and environmental pollution. Therefore, preparing polyurethane (PU) from biomass has become a key focus of attention. This study synthesized itaconic acid-based polyols from itaconic acid (IA) and 1-thioglycerol (TG) by a thiol-ene photoclick reaction. Subsequently, we synthesized itaconic acid-based polyurethane materials by adjusting the ratio of soft and hard segments. The materials displayed excellent mechanical and degradation properties, with a maximum tensile strength of 50.61 MPa and a remaining mass of 56.79 % at 126 days for IATG-PUs-3. Urea was coated on itaconic acid-based polyurethane (PU) to facilitate its function as a slow-release fertilizer. The release rate in soil over 30 days was 81.63 %. Based on this, we conducted an indoor potting test to investigate the growth-promoting effect of slow-release fertilizer on Chinese little greens and Little bok choy. It found that covering the plants with a film of IATG-PUUs significantly improved their growth indices. Furthermore, the growth indices of plants covered with an IATG-PU film were higher than those not mulched. This approach presents a practical solution for creating bifunctional membranes with slow-release fertilizer and biodegradation properties.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116131"},"PeriodicalIF":7.4,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643274","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

Breaking the pH limitation by Mo modulated amorphous medium-entropy alloys as efficient advanced oxidation catalysts

IF 7.4 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-03-12 DOI: 10.1016/j.jece.2025.116151

Xilin Wu , Shun-Xing Liang , Lingjie Jia , Yufeng Liu , Yuexian Huang , Yujing Liu , Liang-Yu Chen , Yuanzheng Yang , Pingjun Tao

{"title":"Breaking the pH limitation by Mo modulated amorphous medium-entropy alloys as efficient advanced oxidation catalysts","authors":"Xilin Wu , Shun-Xing Liang , Lingjie Jia , Yufeng Liu , Yuexian Huang , Yujing Liu , Liang-Yu Chen , Yuanzheng Yang , Pingjun Tao","doi":"10.1016/j.jece.2025.116151","DOIUrl":"10.1016/j.jece.2025.116151","url":null,"abstract":"<div><div>The inherent limitations of conventional metallic glass (MG) catalysts in adapting to complex water environments over a wide pH range stem from their monotonic active site, which is incapable of simultaneously fulfilling multiple functional purposes. Herein, we overcome the narrow range of pH adaptability of existing advanced oxidation catalysts by designing a series of quinary FeCoNiMoB medium-entropy alloys in amorphous structure (referred to as A-MEAs). In particular, the slight modulation of Mo to obtain Fe<sub>25</sub>Co<sub>25</sub>Ni<sub>25</sub>Mo<sub>0.5</sub>B<sub>24.5</sub> A-MEA with highest Gibbs free energy achieves a complete degradation of pollutants both at acidic and alkaline conditions in 10 min. This performance surpasses that of most traditional MGs and high-entropy alloys (HEAs) constrained by the composition limits for entropy maximization. Further insights reveal that in both cases, the multi-site synergistic effects of Mo-driven fast electron transfer of M (M = Fe, Co, and Ni) as active sites and surface-mediated reaction cycles of M<sup>2 +</sup>/M<sup>3+</sup> contribute to the accelerated transformation of reactive oxygen species (ROS) from peroxydisulfate (PDS) and the remarkable catalytic performance of A-MEAs. The radical evolution demonstrates that SO<sub>4</sub>·‾ plays a major role under acidic conditions while O<sub>2</sub>·‾ dominates the catalytic reactions under alkaline conditions. Accordingly, this work aims to fill the gap of A-MEAs for catalytic oxidation of organic pollutants and provide the design strategy of novel MEA catalysts.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116151"},"PeriodicalIF":7.4,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143641867","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

Occurrence and distribution of PAHs and indigenous bacteria in the soil surrounding the industrial parks of Beijing: A systematic field study

IF 7.4 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-03-12 DOI: 10.1016/j.jece.2025.116127

Yaling Gou, Pengwei Qiao, Peizhong Li, Wenxia Wei, Xiang Li, Jiajia Wang, Nan Luo, Yun Song

{"title":"Occurrence and distribution of PAHs and indigenous bacteria in the soil surrounding the industrial parks of Beijing: A systematic field study","authors":"Yaling Gou, Pengwei Qiao, Peizhong Li, Wenxia Wei, Xiang Li, Jiajia Wang, Nan Luo, Yun Song","doi":"10.1016/j.jece.2025.116127","DOIUrl":"10.1016/j.jece.2025.116127","url":null,"abstract":"<div><div>Several studies have been devoted to the characterization of soil PAHs pollution in decommissioned industrial sites and their impacts on soil microbial community, however, the investigation on the pollutant levels and associated indigenous microbial communities of the soil surrounding the industrial parks were scare. In this study, 4 typical industrial parks of Beijing that had previously confirmed polycyclic aromatic hydrocarbons (PAHs) pollution were selected and resampled to systematically quantify the PAHs pollution and investigate their impact on indigenous bacterial community and function diversity. The detection frequency of PAHs among 76 soils is 5.26 %, the maximum of total PAHs is 8.33 mg kg<sup>–1</sup>. Principal co-ordinates analysis (PCoA) results showed that the soil bacterial communities and functions among different industrial parks, locations, or distance from the boundary of respective industrial park were not showed significant differences (p > 0.05). The network analysis results showed that the complexity, natural connectivity and stability of the networks followed the order of FSGY > JJJS > LHJJ > YSSH, which revealed that the PAHs exposure caused some stress to soil indigenous microbes. The main factor impacting bacterial communities and functions is total PAHs in the soil, which increased the alpha diversity of bacterial communities, while decreased the complexity and stability of respective network. Distance-decay relationship (DDR) analysis identified geographical distance as the primary driver on soil bacterial community compared with environmental variability. Our results will enhance the understanding of PAHs pollution and the indigenous bacteria characteristic of the soil surrounding industrial parks and favor the sustainable management of industrial parks.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116127"},"PeriodicalIF":7.4,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643092","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

An integrated, single-reactor for double-duty chemoautotrophic sulfide bio-oxidation and sulfate bio-reduction: Key parameters for unmatched efficiency in elemental sulfur production

IF 7.4 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-03-12 DOI: 10.1016/j.jece.2025.116107

Hawzhin Amanollahi , Gholamreza Moussavi , Stefanos Giannakis

{"title":"An integrated, single-reactor for double-duty chemoautotrophic sulfide bio-oxidation and sulfate bio-reduction: Key parameters for unmatched efficiency in elemental sulfur production","authors":"Hawzhin Amanollahi , Gholamreza Moussavi , Stefanos Giannakis","doi":"10.1016/j.jece.2025.116107","DOIUrl":"10.1016/j.jece.2025.116107","url":null,"abstract":"<div><div>The present study proposes an integrated system for the simultaneous removal of sulfide and sulfate, and determined the key parameters for high-level production of elemental sulfur (S<sup>0</sup>) as the desired end-product . Various modes of operation, including batch, semi-continuous, and continuous, were also examined. The packed bed bioreactor (PBBR) was operated under oxygen-limited conditions with different hydraulic retention times (HRT) near-neutral pH. At an HRT of 3 h, removal efficiencies greater than 99 % and 98 % were achieved for S<sup>2-</sup> bio-oxidation and SO<sub>4</sub><sup>2-</sup> bio-reduction, respectively. During the semi-continuous mode of PBBR operation, thiosulfate (S<sub>2</sub>O<sub>3</sub><sup>2-</sup>), a metabolite of sulfur oxidation, was detected in the effluent; however, when the bioreactor was operated in continuous mode at an HRT of 3 h, the concentration of thiosulfate was below the detection limit. The highest S<sup>0</sup> selectivity (45 %) was achieved at an HRT of 1 h. Next-generation sequencing (NGS) analysis was used to identify the diversity of bacterial species in the biofilm; <em>Thiobacillus sajanensis</em>, <em>Thiobacillus thioparus</em>, and <em>Rhizobium arsenicireducens</em> were found to be the dominant species responsible for the simultaneous biological conversion of sulfide and sulfate. The mechanism of simultaneous sulfide and sulfate bioconversion was investigated and proposed. In summary, the developed PBBR was an efficient method for the concurrent bioconversion of sulfide and sulfate, with considerable selectivity towards elemental sulfur.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116107"},"PeriodicalIF":7.4,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643275","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 and performance of 3-APTMS-modified NiO/γ-Al₂O₃ for high-efficiency biodiesel production from used palm oil

IF 7.4 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-03-12 DOI: 10.1016/j.jece.2025.116149

Wega Trisunaryanti, Triyono, Mokhammad Fajar Pradipta, Jason Purbonegoro, Angela Esti Pratiwi

{"title":"Preparation and performance of 3-APTMS-modified NiO/γ-Al₂O₃ for high-efficiency biodiesel production from used palm oil","authors":"Wega Trisunaryanti, Triyono, Mokhammad Fajar Pradipta, Jason Purbonegoro, Angela Esti Pratiwi","doi":"10.1016/j.jece.2025.116149","DOIUrl":"10.1016/j.jece.2025.116149","url":null,"abstract":"<div><div>This study was done to determine performance of a dual-basic-site catalyst for biodiesel production, created by NiO impregnation on γ-Al₂O₃ and 3-APTMS grafting, enhancing reactant adsorption and catalytic efficiency. The catalyst was synthesized by first preparing NiO/γ-Al₂O₃ via dry impregnation of nickel onto a γ-Al₂O₃ support, followed by grafting with 3-aminopropyltrimethoxysilane (3-APTMS) to form NiO/γ-Al₂O₃-NH₂. The dual functionality, arising from the incorporation of NiO and amino groups, is designed to enhance reactant adsorption and improve catalytic efficiency. This innovative design addresses limitations of conventional catalysts by improving the interaction between active sites and reactants.The catalyst was initially evaluated for basicity using titration and characterized by FTIR and XRD, confirming the formation of NiO rather than Ni(OH)₂. The sample with the highest basicity was further analyzed using surface area analysis and SEM-EDX to determine its textural properties and elemental composition. The mesoporous, amorphous NiO/γ-Al₂O₃-NH₂ exhibited a surface area of 91.68 m²/g, a pore volume of 0.16 cm³ /g, and an average pore diameter of 3.03 nm. Transesterification reactions were performed under varying conditions, including temperatures of 55, 65, and 75 °C, reaction times of 1, 3, and 5 hours, catalyst loadings of 1, 3, and 5 wt%, and oil-to-methanol molar ratios of 1:6, 1:9, and 1:12. Under optimal conditions (55 °C, 1 hour, 1 wt% catalyst, 1:9 ratio), the biodiesel yield reached 83.15 % with 99.76 % methyl ester selectivity. The catalyst maintained its activity after three reuse cycles, underscoring the advantage of its dual basic site design and enhanced stability for biodiesel production.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116149"},"PeriodicalIF":7.4,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637027","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

Utilizing eco-friendly shredded waste tires for oil spill cleanup: Adsorption isotherm and kinetic studies

IF 7.4 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-03-12 DOI: 10.1016/j.jece.2025.116133

Rana Malhas , Sara Salah, Mariam Alawadhi

{"title":"Utilizing eco-friendly shredded waste tires for oil spill cleanup: Adsorption isotherm and kinetic studies","authors":"Rana Malhas , Sara Salah, Mariam Alawadhi","doi":"10.1016/j.jece.2025.116133","DOIUrl":"10.1016/j.jece.2025.116133","url":null,"abstract":"<div><div>Oil spills present a significant environmental challenge, requiring effective and sustainable remediation strategies. The global generation of waste tires, which can have detrimental environmental effects when burned, necessitates innovative recycling methods. Recycling rubber reduces the demand for new raw materials, conserves natural resources, and lowers greenhouse gas emissions. This study explores using shredded waste tires (including powder, fiber, 0.5–2 mm and 2.5–3.5 mm granules, and Tire-derived fuel) as adsorbents for oil spill cleanup. Shredded tire particles, with their large surface area, porosity, hydrophobicity, and durability, are highly effective in oil adsorption. Optimal oil removal was achieved using a 2 g adsorbent dose, an initial oil concentration of 40 g/L, a 30-minute shaking time, a pH of 7, and a temperature of 25°C. Tire powders demonstrated exceptional efficiency, achieving an oil removal rate of 98.1 %. The adsorbent’s high reusability, maintaining a 70.1 % oil removal percentage after 20 cycles, underscores its cost-effectiveness and environmental benefits. Batch adsorption experiments indicated that the process follows second-order kinetics and fits the Freundlich isotherm model. The maximum adsorption capacity was 15.44 g/g. This study highlights the potential of repurposing waste tires as a sustainable solution for mitigating oil spill contamination, offering dual benefits of waste management and environmental remediation.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116133"},"PeriodicalIF":7.4,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628699","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

Tailoring hierarchical GaMFI zeolite anchored Ni catalyst by indium for lignin derivatives hydrodeoxygenation

IF 7.4 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-03-12 DOI: 10.1016/j.jece.2025.116159

Qian Meng , Xin Yin , Peng Zheng , Xiangjin Kong

{"title":"Tailoring hierarchical GaMFI zeolite anchored Ni catalyst by indium for lignin derivatives hydrodeoxygenation","authors":"Qian Meng , Xin Yin , Peng Zheng , Xiangjin Kong","doi":"10.1016/j.jece.2025.116159","DOIUrl":"10.1016/j.jece.2025.116159","url":null,"abstract":"<div><div>Constructing highly active non-noble metal catalysts for hydrodeoxygenation reaction of lignin-derived compounds remains a challenge. Herein, the hierarchical Ga modified MFI zeolite (GaMFI) anchored bimetallic NiIn catalysts with Ni<sub>4</sub>In and Ni<sub>2</sub>In intermetallic compounds (IMCs) were built and employed for hydrodeoxygenation reaction of vanillin to 2-methoxy-4-methylphenol (MMP). By integrating various characterization data, it was demonstrated that doped In adjusted the acidity and distribution of Ni and Ni-In intermetallic compound (IMC). The NiIn2/GaMFI catalyst achieved an exceptional vanillin conversion of > 99 % and MMP selectivity of > 99 % under experiment conditions of 130 °C, 1.5 MPa H<sub>2</sub> and 4 h. Notablely, it exhibited the highest turnover frequency (TOF) value of 283.8 h<sup>−1</sup> among prepared NiIn catalysts, which was related to dispersed Ni and Ni<sub>2</sub>In IMC dual sites that promoted the adsorption of H<sub>2</sub> and vanillin molecules confirmed by Density Functional Theory (DFT) calculation, while the abundance of acidic sites facilitated the activation and cleavage of C-O bond. Additionally, the NiIn2/GaMFI catalyst also demonstrated remarkable stability, maintaining high activity for at least 5 recycles, and showed outstanding universality for various lignin derivatives. These characteristics highlighted its significant potential in industrial application.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116159"},"PeriodicalIF":7.4,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143636308","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

Optimal, reliable, and sustainable technology selection for mining overburden waste utilization using green & climate-smart mining (GCSM): A hybrid fuzzy multi-criteria decision-making tool

IF 7.4 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-03-12 DOI: 10.1016/j.jece.2025.116118

Mohammad Shamsi , Mohammad Zakerinejad , Mohammad Reza Zareifard

{"title":"Optimal, reliable, and sustainable technology selection for mining overburden waste utilization using green & climate-smart mining (GCSM): A hybrid fuzzy multi-criteria decision-making tool","authors":"Mohammad Shamsi , Mohammad Zakerinejad , Mohammad Reza Zareifard","doi":"10.1016/j.jece.2025.116118","DOIUrl":"10.1016/j.jece.2025.116118","url":null,"abstract":"<div><div>This study presents green and climate-smart mining (GCSM), a holistic sustainability tool leveraging Industry 4.0 technologies for mining waste management. It proposes a three-step GCSM assessment framework to ensure reliable, clean, and sustainable overburden waste management. Iran was considered as a case study. In step 1, GCSM categories and criteria were evaluated using the Randomized Weighted Fuzzy-Analytical Hierarchy Process (RWFAHP, 2024) through the national experts' viewpoints. Step 2 applied the Fuzzy Delphi method (FDM) to find key factors for evaluating emerging GCSM technology alternatives. Then, alternatives' ranks were determined to identify the best strategic supply planning of overburdens by local mine experts using a combination of recent Multi-criteria decision-making (MCDM) methods and fuzzy extended Z-numbers (ZE-numbers) to enhance group-decision credibility, uncertainty, and reliability. For robust assessment, MCDM methods including RAWEC (2024), CRADIS (2022), MARCOS, COCOSO, CODAS, VIKOR, and TOPSIS were employed. Finally in step 3, by combining the results of steps 1–2, a quantifiable parameter of GCSM Management Sustainability Score (GCSMMSS) was introduced to practically enhance mining standards. For an illustrative example, the Goharzamin mine was selected to obtain the optimal technology for the reduction, reuse, and recycling of iron ore overburden (IOO) residues. The ZE-RAWEC method, outperforming other ZE-MCDMs, is reliable for future applications. This framework is a practical, efficient, and versatile Industry 4.0 solution, enabling the effective overburden management and supporting mining geomaterial administration systems for a greener earth.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116118"},"PeriodicalIF":7.4,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143621419","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

Long-term performance evaluation of a membrane bioreactor for slaughterhouse wastewater reclamation and reuse

IF 7.4 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-03-12 DOI: 10.1016/j.jece.2025.116144

Miquel Bistué-Rovira , Miguel Martínez-Quintela , Daniel Cantabella , Oscar Osegueda , Laura Mejias , Lidia Paredes

{"title":"Long-term performance evaluation of a membrane bioreactor for slaughterhouse wastewater reclamation and reuse","authors":"Miquel Bistué-Rovira , Miguel Martínez-Quintela , Daniel Cantabella , Oscar Osegueda , Laura Mejias , Lidia Paredes","doi":"10.1016/j.jece.2025.116144","DOIUrl":"10.1016/j.jece.2025.116144","url":null,"abstract":"<div><div>Increasing water scarcity is highlighted as a major threat to human development. Food processing industry, which is a traditional pillar of many economies worldwide, is an important water consumer facing increasing pressure towards new supply strategies. The slaughtering industry, producing large volumes of wastewater characterized by a high content in organic matter and pathogens, stands as one of the most promising and challenging sectors for the implementation of water reclamation technologies. In this sense, membrane bioreactors (MBR) are an emerging strategy for slaughterhouse wastewater (SWW) treatment to achieve treated water quality suitable for water reuse within the food industry. In this study, the performance of a pilot MBR treating SWW has been investigated for 3 different periods accounting for over 600 d of operation, from a singular approach evaluating both technical and regulatory factors determining the technology applicability in an industrial environment for water reclamation and reuse purposes. For the studied parameters, the bioreactor showed an efficient performance at a hydraulic retention time (HRT) above 1.5 d, with removal efficiencies higher than 95 % and 99 % for chemical oxygen demand and ammonium, respectively. At HRT under 1.5 d, the MBR performance was compromised, showing imbalanced microbial populations, partial nitrification driving to nitrite accumulation and increased membrane fouling rate. Regarding the quality of the MBR permeate, the HRT of 2 d was the only one fitting the required parameters for water reuse as process and cleaning water within the food industry, according to the Spanish water reuse regulation in force (RD 1085/2024).</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116144"},"PeriodicalIF":7.4,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143621418","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 of hydrophilic PVDF membrane via blending with Fe3O4 nanoparticles and PVA for improved membrane performance in BTEX removal from wastewater

IF 7.4 2区工程技术

Journal of Environmental Chemical Engineering Pub Date : 2025-03-11 DOI: 10.1016/j.jece.2025.116135

Ngozi Enemuo , Heidi Richards , Michael O. Daramola

{"title":"Preparation of hydrophilic PVDF membrane via blending with Fe3O4 nanoparticles and PVA for improved membrane performance in BTEX removal from wastewater","authors":"Ngozi Enemuo , Heidi Richards , Michael O. Daramola","doi":"10.1016/j.jece.2025.116135","DOIUrl":"10.1016/j.jece.2025.116135","url":null,"abstract":"<div><div>The recurring cases of the presence of organic contaminants, which include benzene, toluene, ethylbenzene, and xylene (denoted as BTEX) in our water bodies, have reaffirmed the need for continuous development of new strategies for proper BTEX wastewater treatment before discharge. In this study, biogenic-synthesized iron oxide nanoparticles (Fe<sub>3</sub>O<sub>4</sub>-NPs) and polyvinyl alcohol (PVA) were utilized as hydrophilic modifiers to mitigate the non-specific hydrophobic interaction of BTEX and polyvinylidene fluoride (PVDF) membrane to improve membrane performance. Chemical compositional analysis of the membrane confirmed that hydrophilic functional groups were infused into the membrane due to blending the Fe<sub>3</sub>O<sub>4</sub>-NPs and PVA into the PVDF membrane. The PVA-Fe<sub>3</sub>O<sub>4</sub>-PVDF membrane displayed improved hydrophilicity as indicated by its water contact angle (WCA) of 40.5°. Consequently, its anti-fouling performance was enhanced. The total fouling ratio (R<sub>t</sub>) of the pristine PVDF was 0.48, of which 0.25 and 0.23 are irreversible (R<sub>ir</sub>) and reversible (R<sub>r</sub>) fouling, respectively. This was reduced to an R<sub>t</sub> of 0.18 for the modified membrane, and the irreversible fouling declined to 0.02, while 0.16 of the fouling is reversible. The porosity of the modified membrane was also enhanced, resulting in the pure water flux of the membrane improving from 165.3 Lm<sup>−2</sup>h<sup>−1</sup> (pristine membrane) to 313.7 Lm<sup>−2</sup>h<sup>−1</sup> (modified membrane). With the Fe<sub>3</sub>O<sub>4</sub>-NPs acting as nanofillers in the modified membrane matrix, the enhanced membrane porosity did not adversely affect its rejection efficiency. The test of the stability of the modified membrane under long-term filtration revealed that the membrane has good and improved operational stability compared to the pristine membrane.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 3","pages":"Article 116135"},"PeriodicalIF":7.4,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643396","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