Journal of Environmental Sciences-china最新文献_第3页

Water treatment challenges and solution strategies 水处理挑战和解决策略

IF 5.9 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2024-05-23 DOI: 10.1016/j.jes.2024.05.029

Junya Zhang , Baiwen Ma , Min Yang , An Ding , Huijuan Liu

引用次数: 0

An in-situ biochar-enhanced anaerobic membrane bioreactor for swine wastewater treatment under various organic loading rates 原位生物炭强化厌氧膜生物反应器在不同有机负荷率下处理猪废水的方法

IF 5.9 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2024-05-23 DOI: 10.1016/j.jes.2024.05.020

Nianwen Chen , Xinbo Zhang , Qing Du , Huizhong Wang , Zhiwen Wang , Junzhi Ren , Hongxia Li , Wenshan Guo , Huu Hao Ngo

{"title":"An in-situ biochar-enhanced anaerobic membrane bioreactor for swine wastewater treatment under various organic loading rates","authors":"Nianwen Chen , Xinbo Zhang , Qing Du , Huizhong Wang , Zhiwen Wang , Junzhi Ren , Hongxia Li , Wenshan Guo , Huu Hao Ngo","doi":"10.1016/j.jes.2024.05.020","DOIUrl":"10.1016/j.jes.2024.05.020","url":null,"abstract":"<div>A biochar-assisted anaerobic membrane bioreactor (BC-AnMBR) was conducted to evaluate the performance in treating swine wastewater with different organic loading rates (OLR) ranging from 0.38 to 1.13 kg-COD/(m3.d). Results indicated that adding spent coffee grounds biochar (SCG-BC) improved the organic removal efficiency compared to the conventional AnMBR, with an overall COD removal rate of > 95.01%. Meanwhile, methane production of up to 0.22 LCH4/gCOD with an improvement of 45.45% was achieved under a high OLR of 1.13 kg-COD/(m3.d). Furthermore, the transmembrane pressure (TMP) in the BC-AnMBR system was stable at 4.5 kPa, and no irreversible membrane fouling occurred within 125 days. Microbial community analysis revealed that the addition of SCG-BC increased the relative abundance of autotrophic methanogenic archaea, particularly Methanosarcina (from 0.11% to 11.16%) and Methanothrix (from 16.34% to 24.05%). More importantly, Desulfobacterota and Firmicutes phylum with direct interspecific electron transfer (DIET) capabilities were also enriched with autotrophic methanogens. Analysis of the electron transfer pathway showed that the concentration of c-type cytochromes increased by 38.60% in the presence of SCG-BC, and thus facilitated the establishment of DIET and maintained high activity of the electron transfer system even at high OLR. In short, the BC-AnMBR system performs well under various OLR conditions and is stable in the recovery energy system for swine wastewater.</div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141140421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Assessing the effectiveness and mechanisms of Fe/PS, Fe/H2O2, and O3 treatment for water disinfection: Spotlight on VBNC bacteria 评估Fe/PS、Fe/H2O2和O3处理水消毒的效果和机制：聚焦 VBNC 细菌

2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2024-05-22 DOI: 10.1016/j.jes.2024.05.023

Zheng Qi , Zaihui Huang , Chunguang Liu

{"title":"Assessing the effectiveness and mechanisms of Fe/PS, Fe/H2O2, and O3 treatment for water disinfection: Spotlight on VBNC bacteria","authors":"Zheng Qi , Zaihui Huang , Chunguang Liu","doi":"10.1016/j.jes.2024.05.023","DOIUrl":"10.1016/j.jes.2024.05.023","url":null,"abstract":"<div>Advanced oxidation processes (AOPs) exhibit significant potential for water disinfection due to their generation of large quantities of highly oxidizing free radicals. However, the neglect of viable but nonculturable (VBNC) cells obscures their true disinfection efficacy and potential environmental health risks. Therefore, the study evaluated the disinfection effectiveness and mechanisms of typical AOPs, including Fe/H2O2, Fe/persulfate (PS), and O3, from the perspective of the production of VBNC bacteria. The results indicate that Fe/PS exhibits the strongest bacterial inactivation rate (99.94%), and the cells lose their ability to reactivate. Fe/H2O2 and O3 induce more cells to enter the VBNC state compared to Fe/PS. Moreover, different AOPs result in varying levels of free radical production and utilization efficiency, with SO4•− and O3 exhibiting greater selectivity in deactivating bacteria compared to HO•. The inhibition of VBNC bacteria production by Fe/PS treatment may be attributed to the combined action of HO• and SO4•− on microorganisms, leading to oxidative stress and metabolic disruption in bacteria through the inhibition of biofilm formation and aminoacyl-tRNA biosynthesis (p < 0.05), thereby causing direct bacterial death rather than entry into the VBNC state. In contrast, Fe/H2O2 and O3 result in the upregulation of the metabolism of alanine, aspartate, and glutamate, as well as styrene degradation capacity by the bacteria, leading to the production of more VBNC bacteria. Overall, the study offers insights into mitigating potential biological risks in water disinfection and developing environmentally friendly and efficient disinfection technologies.</div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141137890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Risk assessment of difenoconazole pollution in carp (Cyprinus carpio): Involvement of liver metabolism disorder and IP3R-Sig1R mediated mitochondrial Ca2+ overload 苯醚甲环唑污染鲤鱼的风险评估：肝脏代谢紊乱与 IP3R-Sig1R 介导的线粒体 Ca2+ 超载的关系

2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2024-05-22 DOI: 10.1016/j.jes.2024.05.028

Feixue Liu , Tianmeng Zhang , Yeyun Ma , Jingquan Dong , Yong Sun

{"title":"Risk assessment of difenoconazole pollution in carp (Cyprinus carpio): Involvement of liver metabolism disorder and IP3R-Sig1R mediated mitochondrial Ca2+ overload","authors":"Feixue Liu , Tianmeng Zhang , Yeyun Ma , Jingquan Dong , Yong Sun","doi":"10.1016/j.jes.2024.05.028","DOIUrl":"10.1016/j.jes.2024.05.028","url":null,"abstract":"<div>Environmental residues of the fungicide difenoconazole (DFZ) have been shown to pose a threat to mammals. However, the risk assessment of DFZ for cultured carp remains unclear. The aim of this study was to investigate the adverse effects of DFZ on carp liver and their molecular mechanisms by simulating the environmental contamination concentrations of DFZ. Our results showed that DFZ induced structural damage in the liver, including edema, vacuolation, and congestion. In addition, DFZ residues were detected in liver tissues. Mechanistically, DFZ causes mitochondrial dysfunction by promoting Ca2+ transfer from the endoplasmic reticulum (ER) to mitochondria via IP3R, leading to the onset of ROS burst and apoptosis, and the inhibition of Nrf2 antioxidant function by DFZ also results in uncontrolled ROS. Mitophagy was also activated intracellularly to counteract mitochondrial damage. Interestingly, treatment with 2-APB alleviated mitochondrial dysfunction, restored the mitochondrial membrane potential, and inhibited apoptosis by blocking the translocation of Ca2+ from the ER to the mitochondria. Metabolomic analysis revealed that DFZ disrupted energy metabolism in carp liver, whereas 2-APB reversed DFZ-induced metabolic alterations. In conclusion, the present study elucidates the threat of DFZ to carp liver and highlights the mechanism of damage, thereby helping to explain the impact of agriculture on the aquatic environment.</div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141141453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Plasmid-mediated transfer of antibiotic resistance genes and biofilm formation in a simulated drinking water distribution system under chlorine pressure 氯压力下模拟饮用水分配系统中质粒介导的抗生素耐药基因转移和生物膜的形成

2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2024-05-22 DOI: 10.1016/j.jes.2024.05.021

Yexing Wang , Yingyu Zhang , Xiuneng Zhu , Yulin Tang , Yongji Zhang

{"title":"Plasmid-mediated transfer of antibiotic resistance genes and biofilm formation in a simulated drinking water distribution system under chlorine pressure","authors":"Yexing Wang , Yingyu Zhang , Xiuneng Zhu , Yulin Tang , Yongji Zhang","doi":"10.1016/j.jes.2024.05.021","DOIUrl":"10.1016/j.jes.2024.05.021","url":null,"abstract":"<div>The effects of disinfectants and plasmid-based antibiotic resistance genes (ARGs) on the growth of microorganisms and the plasmid-mediated transfer of ARGs in the water and biofilm of the drinking water distribution system under simulated conditions were explored. The heterotrophic plate count of the water in reactors with 0.1 mg/L NaClO and NH2Cl was higher than in the control groups. There was no similar phenomenon in biofilm. In the water of reactors containing NaClO, the aphA and bla genes were lower than in the antibiotic resistant bacteria group, while both genes were higher in the water of reactors with NH2Cl than in the control group. Chloramine may promote the transfer of ARGs in the water phase. Both genes in the biofilm of the reactors containing chlorine were lower than the control group. Correlation analysis between ARGs and water quality parameters revealed that the copy numbers of the aphA gene were significantly positively correlated with the copy numbers of the bla gene in water and significantly negatively correlated in biofilm (p < 0.05). The results of the sequencing assay showed that bacteria in the biofilm, in the presence of disinfectant, were primarily Gram-negative. 1.0 mg/L chlorine decreased the diversity of the community in the biofilm. The relative abundance of some bacteria that may undergo transfer increased in the biofilm of the reactor containing 0.1 mg/L chlorine.</div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141145698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Diversity and dynamic response of anaerobic ammonia oxidation granular sludge 厌氧氨氧化颗粒污泥的多样性和动态响应

2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2024-05-19 DOI: 10.1016/j.jes.2024.05.016

Jiahong Ye , Xiang Li , Yan Yuan , Yayi Wang , Yong Huang , Jun Ma , Han Wang , Pengze Dang , Pei-ling Xu

{"title":"Diversity and dynamic response of anaerobic ammonia oxidation granular sludge","authors":"Jiahong Ye , Xiang Li , Yan Yuan , Yayi Wang , Yong Huang , Jun Ma , Han Wang , Pengze Dang , Pei-ling Xu","doi":"10.1016/j.jes.2024.05.016","DOIUrl":"https://doi.org/10.1016/j.jes.2024.05.016","url":null,"abstract":"<div>Red anaerobic ammonia oxidation (Anammox) granular sludge (AnGS) has been reported in successfully operating Anammox systems, and its color is associated with sludge activity. However, in long-term operating systems, AnGS exhibits different sensory colors, physical structures, community structures, and denitrification performance, but the relationship between them has not yet been elucidated. The AnGS of the Anammox system, which has been in operation for more than a decade, can be divided into two main categories: red and white. The specific Anammox activity (SAA) in conventional red AnGS increased continuously as the particle size increased from <0.51 mm to 6.02 ± 0.84 mm. The SAA of white AnGS were slightly lower than those of red AnGS with similarly-size granules but significantly higher than AnGS with smaller red granules. Compared with red AnGS, the extracellular polymeric substances of white AnGS were significantly reduced, mainly due to the higher intracellular iron content, resulting in lower heme c concentration. Thus, heme c may prove not to be an evaluative tool for measuring Anammox activity. Red and white AnGS, whether through self-aggregation or adsorption by hydroxyl apatite and other carriers, will face the fate of internal voids during particle size growth. White AnGS exhibited a more complex microbial community than red AnGS. Candidatus Brocadia was abundant in red AnGS and the abundance increased with increasing granule size. Candidatus Kuenenia and Candidatus Jettenia made significant contributions to denitrification in white AnGS. This study provides a new perspective on particle selection for anammox engineering applications.</div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141084586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Asymmetric oxygen vacancy promotes CO-SCR performance on defect-engineered Rh/CeCuOx catalyst 不对称氧空位促进了缺陷工程 Rh/CeCuOx 催化剂的 CO-SCR 性能

2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2024-05-18 DOI: 10.1016/j.jes.2024.05.002

Qian Wang , Xinyu Han , Kaiting Chen , Kaijie Liu , Xiangguang Yang , Yibo Zhang

{"title":"Asymmetric oxygen vacancy promotes CO-SCR performance on defect-engineered Rh/CeCuOx catalyst","authors":"Qian Wang , Xinyu Han , Kaiting Chen , Kaijie Liu , Xiangguang Yang , Yibo Zhang","doi":"10.1016/j.jes.2024.05.002","DOIUrl":"10.1016/j.jes.2024.05.002","url":null,"abstract":"<div>Selective catalytic reduction of NOx with CO (CO-SCR) is a process that purifies both NO and CO pollutants through a catalytic reaction. Specifically, the cleavage of NO on the catalyst surface is crucial for promoting the reaction. During the reaction, the presence of oxygen vacancies can extract oxygen from NO, thereby facilitating the cleavage of NO on the catalyst surface. Thus, the formation of oxygen vacancies is key to accelerating the CO-SCR reaction, with different types of oxygen vacancies being more conducive to their generation. In this study, Rh/CeCuOx catalysts were synthesized using the co-crystallization and impregnation methods, and asymmetric oxygen vacancies were induced through hydrogen thermal treatment. This structural modification was aimed at regulating the behavior of NO on the catalyst surface. The Rh/Ce0.95Cu0.05Ox-H2 catalyst exhibited the best performance in CO-SCR, achieving above 90% NO conversion at 162 °C. Various characterization techniques showed that the H2 treatment effectively reduced some of the CuO and Rh2O3, creating asymmetric oxygen vacancies that accelerated the cleavage of NO on the catalyst surface, rather than forming difficult-to-decompose nitrates. This study offers a novel approach to constructing oxygen vacancies in new CO-SCR catalysts.</div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141143723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Tailoring C-defect O-doping and n-π* transition awakened porous ultra-thin carbon nitride for efficient peroxymonosulfate activation: Performances and mechanism insight 定制 C 缺陷 O 掺杂和 n-π* 过渡唤醒多孔超薄氮化碳，实现高效过一硫酸盐活化：性能和机理洞察

2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2024-05-17 DOI: 10.1016/j.jes.2024.05.012

Meng Tai , Guangbo Che , Tianyu Zhou , Honghui Teng , Chunbo Liu , Bo Hu

{"title":"Tailoring C-defect O-doping and n-π* transition awakened porous ultra-thin carbon nitride for efficient peroxymonosulfate activation: Performances and mechanism insight","authors":"Meng Tai , Guangbo Che , Tianyu Zhou , Honghui Teng , Chunbo Liu , Bo Hu","doi":"10.1016/j.jes.2024.05.012","DOIUrl":"10.1016/j.jes.2024.05.012","url":null,"abstract":"<div>Integrating photocatalysis technology with peroxymonosulfate oxidation possesses huge potential for degrading stubborn pollutant. Herein, a porous ultra-thin carbon nitride with C-defect O-doping and advanced n-π* transition was customized by one-pot thermal-induced polymerization of molten urea assisted with paraformaldehyde. Via visible-light coupling peroxymonosulfate activation, the DCN-100 can completely photodegrade 2,4-dichlorophenol, and rate constant is 136.6 and 37.9 times that of CN and DCN-100 without peroxymonosulfate. The light-absorption of DCN-100 surpasses 550 nm, specific surface area rises from 45.03 to 98.58 m2/g, and charge behaviors are significantly improved. The effects of paraformaldehyde amount, PMS dosage, pH, 2,4-dichlorophenol concentration, different water-body, wavelength and recycling times on photodegradation performance were explored in detail. Via capture experiments, ESR, LC-MS, Fukui-function, TEXT toxicity assessment and DFT theoretical calculation, the main active substances, degradation pathway, intermediate toxicity and enhanced activity mechanism of DCN-100 were clarified. The research provides a cost-effective, high-efficiency and environmental-friendly photocatalysts to activate peroxymonosulfate for water remediating.</div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141039016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Porphyrinic based hydrogen-bonded organic framework/TiO2 nanocomposites for efficient photocatalytic degradation of sulfadiazine 基于卟啉的氢键有机框架/二氧化钛纳米复合材料用于高效光催化降解磺胺嘧啶

2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2024-05-17 DOI: 10.1016/j.jes.2024.05.015

Chunying Li , Yu Zhang , Mengfei Tian , Naveed Ahmad , Kaitao Jia , Zidan Luo , Bin Qiao , Jiabo Cheng , Chunjian Zhao

{"title":"Porphyrinic based hydrogen-bonded organic framework/TiO2 nanocomposites for efficient photocatalytic degradation of sulfadiazine","authors":"Chunying Li , Yu Zhang , Mengfei Tian , Naveed Ahmad , Kaitao Jia , Zidan Luo , Bin Qiao , Jiabo Cheng , Chunjian Zhao","doi":"10.1016/j.jes.2024.05.015","DOIUrl":"10.1016/j.jes.2024.05.015","url":null,"abstract":"<div>Porphyrinic hydrogen-bonded organic frameworks (porph-HOFs) have emerged as highly promising materials in the realm of photocatalysis due to their remarkable attributes, including low density, high surface area, efficient visible light absorption, and notable chemical stability. However, the rapid recombination of photogenerated charges remains a significant concern. In this work, a novel HOF-based photocatalyst, PFC-72/TiO2 was successfully designed with visible light response and high electron transfer capability. This involved bonding TiO2 nanoparticles to the PFC-72 framework synthesized using cobalt porphyrin as organic ligand and introducing bridging molecules 4-mercaptopyridine (4-PySH). Moreover, sulfadiazine (SDZ), a highly prevalent antibiotic, was effectively degraded from wastewater using PFC-72/TiO2. The high specific surface area of PFC-72 significantly improved the dispersion of TiO2 in PFC-72/TiO2, providing more active sites and improving the ability to adsorb SDZ. Characterizations and density functional theory analysis further confirmed that the photosensitization effect of porph-HOF extended the response range of TiO2 in PFC-72/TiO2 and reduced the recombination efficiency of photogenerated charges, consequently enhancing photocatalytic performance. Additionally, due to significantly improved robustness of PFC-72 and its axial coordination interaction with 4-PySH, PFC-72/TiO2 displayed excellent stability and recyclability. Consequently, optimized PFC-72/TiO2 exhibited a remarkable SDZ removal efficiency of 93.73% within 120 min, maintaining consistent photoactivity even after undergoing four cycles. Furthermore, intermediate products and degradation pathways were proposed based on UPLC-MS/MS.</div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141025140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Facile synthesis of boron-doped porous biochar as a metal-free adsorbent for efficient removal of aqueous tetracycline antibiotics 掺硼多孔生物炭的简易合成，作为无金属吸附剂高效去除水体中的四环素类抗生素

2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2024-05-17 DOI: 10.1016/j.jes.2024.04.044

Lu Xu , Yuetong Qi , Shaolei He , Chengzhi Wang , Xin Jin , Qize Wang , Kai Wang , Pengkang Jin

{"title":"Facile synthesis of boron-doped porous biochar as a metal-free adsorbent for efficient removal of aqueous tetracycline antibiotics","authors":"Lu Xu , Yuetong Qi , Shaolei He , Chengzhi Wang , Xin Jin , Qize Wang , Kai Wang , Pengkang Jin","doi":"10.1016/j.jes.2024.04.044","DOIUrl":"10.1016/j.jes.2024.04.044","url":null,"abstract":"<div>This study introduced a microwave-assisted pyrolysis method for the rapid and efficient preparation of boron-doped porous biochar. The resulting biochar exhibited a large specific surface area (933.39 m2/g), a rich porous structure (1.044 cm3/g), and abundant active sites. Consequently, the prepared boron-doped porous biochar exhibited higher efficiency in adsorbing tetracycline with a maximum adsorption capacity of 413.223 mg/g, which significantly exceeded that of unmodified biochar and most commercial and reported adsorbents. The correlation analysis between the adsorption capacity and adsorbent characteristics revealed that the formation of the –BCO2 group enhanced π–π electron donor–acceptor interactions between boron-doped porous biochar and tetracycline. This mechanism mainly contributed to the enhanced adsorption of tetracycline by boron-doped porous biochar. Additionally, the as-prepared boron-doped porous biochar exhibited broad applications in removing antibiotics (tetracycline), phenolics (bisphenol A), and dyes (methylene blue and rhodamine B). Moreover, the boron-doped porous biochar exhibited satisfactory stability, and its adsorption capacity can be nearly completely regenerated through simple heat treatment. This study provides new insights into the effectiveness of boron-doped carbonaceous materials in removing antibiotic contaminants.</div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141054391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0