Environmental TechnologyPub Date : 2025-03-01Epub Date: 2024-07-11DOI: 10.1080/09593330.2024.2375007
Yueming Zhu, Yuexiang Gao, Fei Yang
{"title":"Controlling the amount of MoSe<sub>2</sub> loaded SrTiO<sub>3</sub> to activate peroxymonosulfate for efficient elimination of organic pollutants.","authors":"Yueming Zhu, Yuexiang Gao, Fei Yang","doi":"10.1080/09593330.2024.2375007","DOIUrl":"10.1080/09593330.2024.2375007","url":null,"abstract":"<p><p>It is critical to effectively eliminate recalcitrant organic pollutants from wastewater. In this paper, the MoSe<sub>2</sub>/SrTiO<sub>3</sub> (MST) catalysts were synthesized through simply controlling the amount of MoSe<sub>2</sub> in the hydrothermal method to activate peroxymonosulfate (PMS) for the degradation of pollutants. The results demonstrated that sulfamethoxazole and tetracycline were almost eliminated by PMS/MST-3 (MoSe<sub>2</sub>/SrTiO<sub>3</sub> mass ratio 0.3: 1) activation system. The effect of inorganic anions (Cl <sup>-</sup>, H<sub>2</sub>PO<sub>4</sub> <sup>-</sup>, HCO<sub>3</sub> <sup>-)</sup> and metal ions (Cu<sup>2+</sup>, Ni<sup>2+</sup>, Zn<sup>2+</sup>) commonly found in actual water bodies on catalytic reaction was explored. Moreover, SO<sub>4</sub><sup>• -</sup>, <sup>•</sup>OH and <sup>1</sup>O<sub>2</sub> were identified by EPR tests and scavenger experiments, where the SO<sub>4</sub><sup>• -</sup> and <sup>•</sup>OH were the dominant reactive species. The XPS analysis indicated that the oxygen vacancies and charge transfer on the catalyst surface were the keys of PMS activation. The effect of active sites in SMX and TC on the catalytic degradation activity was explored by density functional theory, and it was obtained that the central nitrogen site of SMX was more vulnerable in the catalytic system, while the edge oxygen site of TC was more susceptible to attack.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1031-1044"},"PeriodicalIF":2.2,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141579345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Enhancing high-efficient cadmium biosorption of <i>Escherichia coli</i> via cell surface displaying metallothionien CUP1.","authors":"Nan He, Ziru Wang, Ling Lei, Changxuan Chen, Yixian Qin, Jingxiang Tang, Kecheng Dai, Heng Xu","doi":"10.1080/09593330.2024.2375006","DOIUrl":"10.1080/09593330.2024.2375006","url":null,"abstract":"<p><p>Cadmium (Cd) is one of the common heavy metal pollutants in soil, which can induce various diseases and pose a serious threat to human health. Metallothioneins (MTs) are well-known for their excellent metal binding ability due to a high content of cysteine, which has great potential for heavy metal chelation. In this study, we used the <i>Escherichia coli</i> (<i>E. coli</i>) surface display system LPP-OmpA to construct a recombinant plasmid pBSD-LCF encoding LPP-OmpA-CUP1-Flag fusion protein. Then we displayed the metallothionein CUP1 from <i>Saccharomyces cerevisiae</i> on <i>E. coli</i> DH5α surface for Cd removing. The feasibility of surface display of metallothionein CUP1 in recombinant <i>E. coli</i> DH5α (pBSD-LCF) by Lpp-OmpA system was proved by flow cytometry and western blot analysis, and the specificity of the fusion protein in the recombinant strain was also verified. The results showed that the Cd<sup>2+</sup> resistance capacity of DH5α (pBSD-LCF) was highly enhanced by about 200%. Fourier-transform infrared spectroscopy showed that sulfhydryl and sulfonyl groups were involved in Cd<sup>2+</sup> binding to cell surface of DH5α (pBSD-LCF). Meanwhile, Cd removal rate by DH5α (pBSD-LCF) was promoted to 95.2%. Thus, the recombinant strain <i>E. coli</i> DH5α (pBSD-LCF) can effectively chelate environmental metals, and the cell surface expression of metallothionein on <i>E. coli</i> can provide new ideas and directions for heavy metals remediation.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1021-1030"},"PeriodicalIF":2.2,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141626389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Insight into enhancing the performance of sludge dewatering using a novel flocculant CS-TA prepared through free radical-mediated conjugation.","authors":"Yuejin Liu, Xiaojun Niu, Dongqing Zhang, Lingling Zhou, Chunyang Tao, Yu Lin, Siping Chen, Yawen Chen, Zhang Lin, Suying Kong","doi":"10.1080/09593330.2024.2377797","DOIUrl":"10.1080/09593330.2024.2377797","url":null,"abstract":"<p><p>Flocculation is one of the most significant conditioning methods for sludge dewatering. In the study, a novel flocculant CS-TA, prepared through free radical-mediated conjugation of tannic acid (TA) and chitosan (CS), was proposed to improve sludge dewatering. The characterisation using Fourier transform infra-red spectroscopy and X-ray diffraction analysis shows that the CS chain was the backbone of CS-TA, and the presence of CS-TA aromatic rings confirmed the conjugation of CS with TA. Moreover, the conditioning of CS-TA yielded the best dewatering performance at 30 mg g TS<sup>-1</sup> with the water content of sludge cake by press filtration (Wsc) of 59.78% ± 0.3% and capillary suction time (CST) of 11.8s ± 0.35 s, compared to 98.2% ± 0.15% and 56.2 s ± 0.16 in raw sludge. The results of different influencing factors (e.g. pH and temperature) on flocculation efficiency indicated that CS-TA possessed the capacity for enhancing sludge dewaterability over a wide range of pH, and the optimal temperature was observed to be 35 °C. Furthermore, the increase of particle size and zeta potential implied the addition of CS-TA favoured the formation of larger particles charge neutralisation and adsorption bridging effect. In addition, extracellular polymer substances (EPS) analysis indicated that the decrease in the polysaccharide and protein contents in EPS after CS-TA addition could increase the relative hydrophobicity of sludge. Moreover, the contents of heavy metals in sludge and their leaching toxicity and environmental risk were reduced. This study provides comprehensive insights into the exploration of CS-TA for sludge dewatering and the maintenance of ecological security in an eco-friendly.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1160-1177"},"PeriodicalIF":2.2,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141619697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Treatment and ecotoxicity assessment of wastewater containing organic pollutants using a new CoFe<sub>2</sub>O<sub>4</sub>/biochar photocatalyst composite.","authors":"Jandira Leichtweis, Nicoly Welter, Yasmin Vieira, Tamiris Rosso Storck, Bárbara Clasen, Siara Silvestri, Elvis Carissimi","doi":"10.1080/09593330.2024.2382936","DOIUrl":"10.1080/09593330.2024.2382936","url":null,"abstract":"<p><p>This is the first record on literature to use biochar as support for CoFe<sub>2</sub>O<sub>4</sub> to applicate and evaluate it as photocatalyst for degradation of organic pollutants. The support was verified by XRD, FT-IR, SEM, EDS and band gap. Composites CFO1BQ3, CFO1BQ1, and CFO3BQ1 showed 100% degradation in 60 min. This outstanding performance can be related to the drop in band gap energy and recombination rate of <i>e¯/h <sup>+ </sup></i>. The composites showed better efficiency when compared to pure CoFe<sub>2</sub>O<sub>4</sub> (∼78%). This might be associate to the fact that biochar has a high concentration of phenolic, hydroxyl and carboxylic functional groups on its surface. In this reaction h<sup>+</sup>, O<sub>2</sub><sup>•-</sup>, and •OH were the reactive species involved in the degradation. The toxicity of ponceau was tested before and after the treatment, through biochemical biomarkers in <i>Danio rerio</i> fish. In general, the treatment proved to be efficient in reducing ponceau toxicity in <i>D. rerio</i> fish.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1268-1279"},"PeriodicalIF":2.2,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141874528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Environmental TechnologyPub Date : 2025-03-01Epub Date: 2024-07-07DOI: 10.1080/09593330.2024.2374027
Mohamed Abbas, Lixiao Ni, Cunhao Du
{"title":"Using PyCaret to model <i>Chlorella vulgaris</i>'s growth response to salinity and oil contamination for crude oil bioremediation.","authors":"Mohamed Abbas, Lixiao Ni, Cunhao Du","doi":"10.1080/09593330.2024.2374027","DOIUrl":"10.1080/09593330.2024.2374027","url":null,"abstract":"<p><p>Crude oil spills significantly impact aquatic ecosystems, necessitating innovative remediation strategies. Microalgae-based bioremediation, particularly with <i>Chlorella vulgaris</i>, offers a promising solution. This study introduces a novel framework that evaluates the combined effects of selected environmental stressors on microalgal adaptability, advancing beyond traditional isolated factor analyses. By integrating a factorial experimental design with a machine learning approach using PyCaret AutoML and SHAP values, we provide a detailed examination of how crude oil concentration, salinity, and exposure duration affect <i>C. vulgaris</i> growth. The Extra Trees Regressor model emerged as highly accurate in predicting biomass concentration, a crucial adaptability indicator, achieving an MAE of 0.0202, RMSE of 0.029, and an R² of 0.8875. SHAP analysis highlighted salinity and crude oil as significant growth influencers, with exposure duration playing a minor role. Notably, <i>C. vulgaris</i> exhibited more sensitivity to salinity than to crude oil, indicating potential high-salinity challenges but also a strong tolerance to oil pollutants. These findings enhance our understanding of microalgal responses in polluted environments and suggest improved bioremediation approaches for saline waters affected by oil spills, leveraging the synergy of environmental factors and machine learning insights.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"977-990"},"PeriodicalIF":2.2,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141554449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Enhancing the efficacy of synthesising PHA from nitrogen-limited activated sludge using magnetic field.","authors":"Xiaomin Guo, Qian Fang, Kequan Zhang, Guirong Liang, Jiang Zhu, Zilong Xiao","doi":"10.1080/09593330.2024.2376289","DOIUrl":"10.1080/09593330.2024.2376289","url":null,"abstract":"<p><p>Polyhydroxyalkanes (PHA) is a biodegradable biopolyester. In this study, we introduced the biological effects of magnetic field into a sequencing batch reactor (SBR) for PHA production to evaluate the effect of different strength of magnetic field on the efficacy of PHA synthesis by activated sludge and used the magnetic field to enhance the PHA synthesis capacity of nitrogen-limited activated sludge and to optimise the percentage of the content of the two monomers in PHA. The results showed that the magnetic field of appropriate strength was favourable to increase the production of PHA and to increase the percentage of PHV. In addition, microbial community analysis showed that there was an obvious succession of key functional bacteria under different strength of magnetic field. The highest PHA accumulation was achieved after the magnetic field of 16 mT, which reached 57.65% of the dry weight of sludge. In addition, the PHV monomers were more sensitive to the response of the magnetic field, and the magnetic field of 8mT and 16mT positively promoted the synthesis of PHV. It is worth noting that too high a magnetic field would have an inhibitory effect on the synthesis of PHA.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1086-1098"},"PeriodicalIF":2.2,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141603529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Environmental TechnologyPub Date : 2025-03-01Epub Date: 2024-07-22DOI: 10.1080/09593330.2024.2381645
Clara A Mozejko, Franco M Francisca
{"title":"Influence of steel slag content on the mechanical and hydraulic properties of compacted silt-bentonite mixtures.","authors":"Clara A Mozejko, Franco M Francisca","doi":"10.1080/09593330.2024.2381645","DOIUrl":"10.1080/09593330.2024.2381645","url":null,"abstract":"<p><p>The reuse of by-products has become increasingly important as a means of minimising the consumption of natural resources and reducing waste disposal. This study examines the potential reuse of steel slag for soil stabilisation, with benefits such as conserving natural resources and mitigating the greenhouse gas emissions associated with the production of conventional stabilising agents. It focuses on evaluating the effect of pozzolanic reactions on the strength and stiffness of both loess silt and silt-bentonite mixtures. The experimental tests included the physical characterisation of granular materials, reactivity tests of the pozzolanicity of soil mixtures, compaction tests, unconfined compression tests, and hydraulic conductivity tests. The impact of the curing period was also analysed to quantify the effects of natural cementation and the development of hydrogels within soil pores on the compacted soil properties. The findings suggest that adding steel slag can significantly increase the strength and the stiffness of compacted loess silts by over 300% and 500%, respectively, after 56 days of curing, substantially reducing the hydraulic conductivity of granular materials, such as the tested silt, as hydrogels partially occupy the pores available for liquid flow. It should be noted that the chemical reactions during hydrogel formation may hinder the free expansion of clay mixtures and release Ca<sup>2+</sup> ions, thereby counteracting the expected reduction in hydraulic conductivity when bentonite is added to compacted earthen barriers.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1252-1267"},"PeriodicalIF":2.2,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141747769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Recycling slaughterhouse waste rumen fluid for biodegradable bioplastic production from <i>Bacillus tequilensis</i> KU 844284.","authors":"Sundaram Meignanalakshmi, Radhakrishnan Legadevi","doi":"10.1080/09593330.2025.2462794","DOIUrl":"https://doi.org/10.1080/09593330.2025.2462794","url":null,"abstract":"<p><p>In the present study, bioplastic - producing <i>Bacillus tequilensis</i>, a gram-positive rod, was isolated from slaughterhouse waste rumen fluid. Polyhydroxy butyrate (PHB) was produced from <i>B. tequilensis</i> using nitrogen-deficient Minimal medium (NDMM) and slaughterhouse waste rumen fluid (SHWRF). <i>B. tequilensis</i> produced PHB 4.51 ± 0.06 g/L and 1.60 ± 0.04 g/L from SHWRF and NDMM medium, respectively. Thermal stability, biodegradability, and biocompatibility were among the desirable properties of the PHB that were confirmed by FTIR, XRD, TGA, and DSC analysis. The PHB produced by using the SHWRF medium was degraded at a rate of 60.30% in 45 days. The in vitro cytotoxicity assay using the 3T3-L1 fibroblast cell line demonstrated that it is not harmful. This is the first report of bioplastic production by <i>B.tequilensis</i> using slaughterhouse waste rumen fluid. Rumen fluid from slaughterhouse waste can be recycled to produce biodegradable bioplastic.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-16"},"PeriodicalIF":2.2,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143476444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jean-Claude Bollinger, François Bordas, Eva Martinková, Jana Jaklová Dytrtová, Michael Komárek
{"title":"Comments and discussion concerning 'Sorption behavior of tebuconazole on microplastics: kinetics, isotherms and influencing factors' [Environ Technol. 2023;44:3937-3948].","authors":"Jean-Claude Bollinger, François Bordas, Eva Martinková, Jana Jaklová Dytrtová, Michael Komárek","doi":"10.1080/09593330.2025.2463035","DOIUrl":"https://doi.org/10.1080/09593330.2025.2463035","url":null,"abstract":"<p><p>The widespread use of synthetic polymers since the mid-twentieth century has led to significant environmental pollution from microplastics (MPs). These MPs, which persist in ecosystems, can interact with various pollutants, including pesticides such as tebuconazole (TEB). The subject paper investigates the sorption behaviour of TEB on different types of MPs (polystyrene, polypropylene, and polyamide-6), focusing on the kinetics and isotherms of these interactions. The role of metal cations (Al, Cd, Cu, Pb, Zn) in influencing TEB sorption is also investigated. Our findings highlight critical flaws that invalidate the original article, mainly in the interpretation of TEB physicochemical properties, such as pK<sub>a</sub> and speciation, and the importance of considering metal ion complexation in environmental risk assessment. The sorption models used by the original authors, although widely used, are questioned for their accuracy in representing real-world scenarios.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-11"},"PeriodicalIF":2.2,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143476439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Akshay Verma, Gaurav Sharma, Tongtong Wang, Amit Kumar, Pooja Dhiman, Yaksha Verma, Aishwarya Bhaskaralingam, Alberto García-Penas
{"title":"Graphene oxide/chitosan hydrogels for removal of antibiotics.","authors":"Akshay Verma, Gaurav Sharma, Tongtong Wang, Amit Kumar, Pooja Dhiman, Yaksha Verma, Aishwarya Bhaskaralingam, Alberto García-Penas","doi":"10.1080/09593330.2025.2464267","DOIUrl":"https://doi.org/10.1080/09593330.2025.2464267","url":null,"abstract":"<p><p>Antibiotic contamination in aquatic environments is a growing concern, posing risks to public health and ecosystems. To address this issue, advanced materials like graphene oxide (GO) and chitosan-based hydrogels are being extensively explored for their ability to effectively remove antibiotics from wastewater, owing to their distinct characteristics and synergistic benefits. This review comprehensively examines the synthesis, characterization, and applications of GO/chitosan hydrogels in addressing antibiotic pollution. The synthesis methods, including solution casting, crosslinking, and <i>in situ</i> polymerization, are discussed for their simplicity and scalability. The hydrogels' key properties, such as porosity, surface area, and mechanical strength, are essential for their efficient adsorption capabilities. Adsorption mechanisms, including electrostatic interactions, π-π stacking, hydrogen bonding, and surface functional groups, enable these hydrogels to achieve high adsorption capacities. Notable examples include rGO@ZIF-67@CS hydrogels, which achieved higher adsorption capacities of 1685.26 mg·g<sup>-1</sup> for tetracycline at pH 4 and 1890.32 mg·g<sup>-1</sup> for norfloxacin at pH 5, while the sulfonated CMC/GO-GCC composite hydrogel achieved 312.28 mg·g<sup>-1</sup> for sulfamethoxazole at 298 K. Moreover, high adsorption efficiencies of 90.42% with GO-CTS and 97.06% were achieved using AGO-CTS hydrogel for diclofenac adsorption. The review also highlights the practical applications of these hydrogels in wastewater treatment, comparing their performance with other adsorbents and addressing challenges such as scalability and regeneration. Finally, the review explores future research directions to enhance the effectiveness and sustainability of GO/chitosan hydrogels, emphasizing their potential as scalable, eco-friendly solutions for antibiotic removal from water.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-31"},"PeriodicalIF":2.2,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143476441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}