JOURNAL OF HAZARDOUS MATERIALS
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2025
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IF 11.3
Kai Tang,Xiaocong Cao,Xinxing Geng,Wenguo Huang,Hao Liu,Zhicong Yan,Zongxiu Wu,Changen Yang,Jia Tang,Zhi Zhou
Scleractinian corals are increasingly threatened by environmental contaminants such as nanoplastics (NPs) and antibiotics. The early life stages of corals are particularly vulnerable to environmental stressors, yet their impacts under environmentally relevant concentrations remain poorly understood. Here, we exposed Pocillopora damicornis larvae to NPs (100 μg/L) and sulfamethoxazole (SMX, 0.1 μg/L) for 48 hours to assess their effects on survival, settlement, tissue structure, and bacterial symbionts. Exposure of NPs and SMX significantly reduced larval survival, caused tissue necrosis and mesenterial filament dissociation, and altered the composition of bacterial symbionts, including an decrease in Pseudoalteromonas . Compared to the Control group, co-exposure of NPs and SMX induced more severe tissue damage and broader functional shifts in microbial communities, including elevated methylotrophy, photoheterotrophy, photoautotrophy, and reduced anaerobic respiration. These findings suggest that coral larvae are highly sensitive to NPs and SMX, which may alter bacterial symbiont community to disturb nutrient cycling and energy metabolism, cause tissue damage, and ultimately impair larval survival, thereby threatening coral reef replenishment and recovery.
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高影响因子
Environmental Progress & Sustainable Energy
·
2026
·
IF 2.3
Yingjian Yu,Yulong Li,Jing Zhu,Fang Deng,Menghu Wang,Lie Yang
Antibiotics pose significant risks to human health and ecosystems due to their environmental persistence and high hydrophilicity. In this study, sulfamethoxazole (SMX) was selected as a target contaminant, and a molten copper chloride-modified sludge-derived biochar (Cu-SBC) was developed to activate periodate (PI) for the efficient removal of antibiotics from water. The results indicated that the introduction of copper significantly altered the surface chemistry of the biochar, thereby simultaneously enhancing its adsorption capacity for SMX and its activation performance toward PI. The Cu-SBC/PI system achieved complete degradation of SMX within 50 min and exhibited strong environmental adaptability and good reusability. Quenching experiments and electrochemical analyses revealed that SMX degradation predominantly occurred via a non-radical pathway facilitated by an electron transfer mechanism. Moreover, seed germination tests confirmed the effective detoxification capability of the Cu-SBC/PI system toward SMX degradation. This study provides a novel strategy for designing sludge-based biochar catalysts and offers a promising technical approach for the efficient degradation of antibiotics in aquatic environments.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Xuedong Zhang,Lele Ni,Mustafa Evren Ersahin,Hale Ozgun,Guoshuai Liu
Synergistic microenvironment enables low-energy electro-Fenton SMZ degradation. • Amino-CNT site enhances oxygen utilization and FeN 5 boosts •OH generation. • Stable SMZ removal over 20 cycles and across pH 3–11 and real water matrices. The practical effectiveness of the electro-Fenton (EF) technology is severely constrained by sluggish oxygen mass transport and inefficient activation of hydrogen peroxide (H 2 O 2 ). Herein, a synergistic catalytic microenvironment was constructed by integrating a biomimetic FeN 5 single-atom nanozyme with an amino-functionalized carbon nanotube support (CNT−NH 2 ) to overcome these dual challenges. Experimental and theoretical results reveal that the −NH 2 groups on CNT−NH 2 induce a local oxygen-enriched interface, significantly enhancing oxygen (O 2 ) supply and promoting the 2e − oxygen reduction reaction (2e − ORR) for efficient in situ H 2 O 2 generation. Simultaneously, the FeN 5 sites facilitate hydroxyl radical (•OH) production by mimicking peroxidase activity, thereby lowering the activation energy for O−O bond cleavage in H 2 O 2 . The resultant FeN 5 −CNT−NH 2 EF system achieves complete degradation of sulfamethoxazole (100% in 45 min) with a remarkably low specific energy consumption (0.0235 kWh g −1 TOC), and demonstrates excellent stability and broad applicability in complex water matrices. This work provides a novel perspective for constructing high-performance EF process through synergistic microenvironment engineering. Download: Download high-res image (144KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yu Xiao,Yangqi Liu,Xi Zhang,Jinping Cheng,Pin Gao
PVC MPs disrupt the spatial purification gradient in constructed wetlands. • PVC MPs accelerate the collapse of denitrification and inhibit sulfamethoxazole removal. • PVC MPs intensify the deterministic community assembly and fragment microbial co-occurrence networks. • PVC MPs reverse the attenuation trend of ARGs and enrich ARG-harboring pathogens. Co-occurrence of antibiotics and microplastics (MPs) in constructed wetlands (CWs) poses substantial threats to stable pollutant removal performance. However, their long-term combined impacts on the functional integrity of CWs along spatial flow paths remain poorly understood. Although the individual effects of sulfamethoxazole (SMX) on CWs have been extensively documented, this study established replicated continuous-flow horizontal subsurface flow CWs fed with SMX-spiked wastewater to systematically investigate effects of polyvinyl chloride (PVC) MPs on pollutant removal and microbial community assembly. The results showed that PVC MPs exerted negligible effects on overall removal of organic carbon and ammonia, but significantly accelerated decline in denitrification and SMX degradation along the flow direction. Relative to the SMX-only control system, the final removal efficiencies of total nitrogen and SMX in the microplastic exposure system were 6.0% and 15.3% lower, respectively. PVC MPs disrupted the inherent spatial purification gradient along flow direction, triggered unexpected pollutant accumulation and concentration inversion, and intensified deterministic process of microbial community assembly. This shift suppressed proliferation of core functional denitrifying taxa (e.g., Zoogloea and Comamonas ), while favoring growth of stress-tolerant generalist taxa. Functional metagenomic prediction revealed that these taxonomic shifts were accompanied by disruption of spatial functional gradients associated with carbon and nitrogen metabolic pathways. PVC MPs amplified ecological risks by converting the downstream section of CWs into hotspots for antibiotic resistance genes (ARGs), resulting in upregulated expression of genes related to cell motility and membrane transport, which facilitated horizontal gene transfer of sul1 , sul2 , and intI1 . This MP-induced selective pressure drove enrichment of potential ARG-carrying pathogens in the outlet zone. These findings provide novel mechanistic insights for risk assessment of MP-antibiotic co-contamination in engineered CW systems. Download: Download high-res image (212KB) Download: Download full-size image
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Sustainable Materials and Technologies
·
2026
·
IF 9.7
Qiang Chen,Lei Xu,Le Liang,Chen Chen,Xiao-He Wu,Baoling Yuan,Ming-Lai Fu
With the large-scale disposal of spent lithium-ion batteries (SLIBs) and the ongoing accumulation of organic pollutants in water bodies, the resource recovery of solid waste and water pollution control have emerged as critical challenges in the environmental field. To address the dual challenges of SLIBs and persistent organic pollutants, a nickel‑cobalt‑manganese oxide catalyst (NCM-APS) was synthesized via hydrothermal treatment of SLIB leachate with ammonium persulfate (APS) for peroxymonosulfate (PMS) activation. The catalyst featured a nanostructured morphology, large surface area, and abundant hydroxyl groups, enabling efficient PMS activation. Under optimized conditions, nearly complete removal of 10 μmol/L sulfamethoxazole (SMX) was achieved within 20 min, and 82.4% removal of 50 μmol/L SMX occurred within 1 h. The catalyst exhibited favorable stability to a certain extent, maintaining activity in the presence of common coexisting ions (Cl − , NO 3 − , SO 4 2− ) and after repeated cycles. Reactive species analysis suggested the generation of SO 4 • − , HO • , 1 O 2 , and O 2 • − , with 1 O 2 as the predominant oxidant. High-resolution mass spectrometry and Fukui function analysis elucidated the SMX degradation pathway. This work demonstrates a sustainable strategy for SLIB upcycling and highlights the practical potential of PMS-based advanced oxidation processes in wastewater treatment.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Shuangyuan Liu,Xinyu Li,Yubei Xiong,Ting Wang,Cong Pan,Chuanyin Liu,Ping He,Shilong Li
In the field of advanced oxidation processes, the efficient activation of hydrogen peroxide (H 2 O 2 ) plays a crucial role in the degradation of organic pollutants. Herein, sulfur-doped CuFeO 2 (S-CuFeO 2 ) was synthesized and exhibited enhanced catalytic activity for sulfamethoxazole (SMX) degradation via H 2 O 2 activation. Sulfur incorporation into the CuFeO 2 lattice modulates the electronic structure and surface properties, thereby facilitating H 2 O 2 activation and promoting O O bond cleavage and the generation of highly reactive oxygen species (ROSs). Combined quenching experiments, electron spin resonance (ESR), X-ray photoelectron spectroscopy (XPS), and density functional theory (DFT) calculations reveal that hydroxyl radicals (HO • ) and superoxide radicals (O 2 •− ) dominate the SMX degradation in oxidation process. In addition, the S-CuFeO 2 /H 2 O 2 system demonstrates good stability, low metal leaching, and effective performance in different water matrices and for various organic pollutants. Toxicity evaluation further indicates a reduction in overall toxicity during degradation. This work provides mechanistic insight into H 2 O 2 activation by sulfur-doped catalysts and offers a feasible strategy for designing efficient catalysts for antibiotic-contaminated wastewater treatment. Download: Download high-res image (199KB) Download: Download full-size image
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Yonglei Xing,Xiaohua Mai,Wenbo Lv,Fang Wan,Xiaoyong Jin,Gang Ni
Hollow carbon-coated CoSe 2 cubes (CCS2) were derived from a CoFe-PBA template. • Tuning Se-vacancy density reshapes Co electronic state for PMS activation. • CCS2 removed 95% SMX in 10 min with an apparent rate constant of 1.39 min −1 . • 1 O 2 and SO 4 •− dominate, while ·OH, O 2 •− and Co(IV)=O play auxiliary roles. • CCS2/PMS retained high activity over pH 3–11 and in real water matrices. The growing variety and chemical intricacy of refractory organic species in aqueous environments has elevated the design of robust, sustainable, and eco-compatible peroxymonosulfate (PMS) activation platforms into a key research thrust within advanced oxidation. Targeting the recurring drawbacks of common heterogeneous catalysts (insufficient active-site exploitation, considerable metal dissolution, and weak cyclic stability), we built a carbon-shelled cobalt selenide system (CCS) starting from CoFe-PBA, by sequentially performing hydrothermal selenization, polydopamine wrapping, and inert-atmosphere annealing. Modulating the selenium vacancy (V Se ) population proved to substantially reinforce PMS activation. Among the synthesized series, CCS2 emerged as the top performer, eliminating 95% of 20 mg L −1 sulfamethoxazole (SMX) over 10 min. Multi-technique characterization coupled with mechanistic probing revealed that incorporating V Se rearranged the electron distribution around Co atoms, raised the proportion of Co 2+ , and tightened the anchoring of oxygen-containing surface species. Concurrently, under-coordinated Se centers played a role in maintaining the Co 3+ /Co 2+ redox cycle, which together drove PMS through several parallel activation channels. Spin-trapping EPR measurements, quenching experiments, and selective probe assays jointly confirmed coexistence of SO 4 •− , •OH, 1 O 2 , and high-valent Co-O species in the CCS2/PMS system, with 1 O 2 and SO 4 •− as the principal contributors driving SMX abatement. These results elucidate the way anion vacancies tailor the electronic landscape and synergistic catalytic pathways of transition-metal selenides under PMS activation, providing a new conceptual route for designing durable sulfate-radical-based AOP catalysts via defect engineering. Download: Download high-res image (262KB) Download: Download full-size image
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 6
·125429
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IF 7.5
Fu Wei,Quanli Chen,Xilong Liu,Xiaozhuo Li,Chenhui Zhang,Yuyang Zhang,Qian Zhang
8 mg·L⁻¹ SMX is the threshold, beyond which TN removal severely deteriorates (<30%). • Inhibition stems from AMO/NR activity loss, causing gene-function decoupling. • Thauera abnormally surges under SMX stress but fails to execute actual N-removal. • Microbes shift from N-removal to survival defense, enriching sul1/sul2 ARGs. • SMX activates ABC transporters and quorum sensing for resistance and survival. To investigate the microscale inhibition mechanism of sulfamethoxazole (SMX) on nitrogen removal in Aerobic granular sludge–sequencing batch reactor(AGS–SBRs), system responses were evaluated under gradient SMX concentrations (0–20 mg·L⁻¹). Pollutant sensitivity followed TN > NH₄⁺–N > COD, exhibiting distinct disruption thresholds. Specifically, 8 mg·L⁻¹ emerged as a critical threshold for nitrification inhibition, where NH₄⁺-N removal decreased to 89.88%. As stress intensified to 10 mg·L⁻¹ , TN removal severely deteriorated to below 30%, marking the collapse of denitrification. LC-MS and metagenomic analyses revealed that at low concentrations, SMX was detoxified via S-N bond cleavage and hydroxylation, followed by high-mass coupling polymerization and β-oxidation-driven complete mineralization. However, at 8 mg·L⁻¹ , an enzymatic degradation bottleneck emerged. This accumulation of SMX served as the turning point for microbial succession, significantly inhibiting Nitrosomonas while causing an abnormal abundance surge of Thauera . Under this stress, although nitrogen transformation genes remained abundant, AMO and NR enzymatic activities were suppressed by 12.59% and 33.42%, causing severe gene function decoupling. Consequently, the microbial strategy shifted fundamentally from metabolic degradation to survival defense, evidenced by the marked enrichment of sul1 and sul2 resistance genes, alongside Thauera’s peak contributions to ABC transporters and quorum sensing. These findings provide multidimensional insights for threshold regulation in antibiotic-containing wastewater treatment. Download: Download high-res image (243KB) Download: Download full-size image
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Journal of Water Process Engineering
·
2026
·
IF 6.6
Yifeng Xu,Zhixin Li,Benquan Mao,Linchuan Fang,Lai Peng
The high consumption of antibiotics has raised increasing concerns due to their adverse effects on ecosystems and human health. Intimately coupled photocatalysis and biodegradation (ICPB) technology attracts growing focuses for its performance in antibiotic removal. However, microbial detachment under irradiation and difficulty in photocatalyst recovery hinder the practical application of the ICPB. In this study, the removal performance of sulfamethoxazole (SMX) was investigated by a visible light-driven ICPB system in a layered reactor, using calcium alginate (CA) to encapsulate ZnO/g-C 3 N 4 as photocatalytic microspheres. The results indicated that CA could not only immobilize the photocatalyst for recovering, but also had a strong adhesive ability to prevent microorganisms detaching from biofilm carriers, thus achieving higher SMX removal efficiency in the ICPB-CA system (51.9%) than the ICPB system without CA (31.7%). Layered reactor facilitated an extremely enhanced SMX removal by the ICPB system (86.6%) compared to the non-layered ICPB system, due to the alleviation in shading effects of microorganisms on the photocatalysts through a physical separation. Combing the smaller molecules and less biotoxicities of degradation products compared to SMX, it was inferred that ICPB had the potential in elimination of antimicrobial activities of antibiotics during wastewater treatment. The findings imply the feasible application of ICPB by adopting CA encapsulation in the layered system during treatment of antibiotics in wastewater.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Xue Meng,Siyu Yu,Xiaoya Hou,Kaifang Fu,Yan Wang,Yongbao Chu,Yang Zhang
Electrocatalytic membranes have demonstrated considerable potential for emerging contaminants (such as antibiotics) degradation in wastewater treatment, yet their practical application remains constrained by the inherent current-intensive of electrochemical processes. This study addresses this critical challenge through the development of a cobalt phthalocyanine-functionalized carbon nanotube electrocatalytic membrane (EM CoPc@CNT ) featuring atomic-level dispersion of Co species on the CNT support. The single-atom Co sites in EM CoPc@CNT exhibit a unique electronic structure characterized by elevated electron density and enhanced electron delocalization. This electronic configuration effectively reduces the energy barrier for *H 2 O 2 formation while rendering the subsequent conversion to *OH radicals thermodynamically favorable. Consequently, EM CoPc@CNT sustains ·OH generation and achieves over 95% sulfamethoxazole (SMX) degradation efficiency even at low current density (0.15 mA/cm 2 ), a regime where conventional electrocatalytic membranes exhibit negligible activity. These results overcome the longstanding current-density dependence of electrocatalytic membranes, providing support for their practical implementation.
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CHEMOSPHERE
·
2022
·
IF 8.943
Xiaojin Hu,Junyu Huo,Huijun Xie,Zhen Hu,Shuang Liang,Jian Zhang
For decades, sulfamethoxazole (SMX) has been frequently detected in the aquatic environments due to its high usage and refractory to degradation. Constructed wetland (CW) is regarded as an efficient advanced wastewater technology to eliminate organic pollutants including SMX. In CW system, substrate adsorption and further biodegradation are extremely important in SMX removal; however, the removal performance of SMX by CWs with different substrates varies greatly, and the biotransformation pathways, products, and mechanisms of SMX remain unclear. To address this, we constructed a CW with conventional substrate (CS, gravel) as control (C-CW) and three CWs with emerging substrates (ES, biochar, zeolite and pyrite for B-CW, Z-CW and P-CW, respectively), and explored the performance and mechanisms of SMX removal in CWs. Results illustrated that the removal performance of SMX in CWs with ES reached 94.89–99.35%, and significantly higher than that with CS of 89.50% ( p < 0.05). Biodegradation contributed >90% SMX removal in all CWs. The microbial compositions and functions differed among CWs at the middle layer (mixed layer), which shaped diverse resistance pattern and metabolism pathways of microbiomes under SMX stress: P-CW and B-CW cope with SMX stress by enhancing material and energy metabolism, whereas Z-CW does that by enhancing metabolism and exocytosis of xenobiotics . Additionally, nine transformation pathways with 15 transformation products were detected in this study. A reversible process of desamino-SMX being reconverted to SMX might exist in P-CW, which caused a lower SMX removal efficiency in P-CW. This study provided a comprehensive insight into the processes and mechanisms of SMX removal in CWs with different substrates, which would be a useful guidance for substrate selection in CWs in terms of enhanced micropollutants removal.
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Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Xuqian Wang,Yuanyuan Peng,Tonghui Xie,Yongkui Zhang,Yabo Wang,Huan Yang
Photocatalysis represents an environmental-benign approach for organic pollutant treatment. Herein, a photocatalytic system composed of Ni x P/biocarbon composite as reactive center and erythrosine B (ErB) as sensitizer was constructed for the removal of sulfamethoxazole (SMX) antibiotic under visible light irradiation. Ni x P/biocarbon composites were fabricated via a facile impregnation-pyrolysis approach using baker’s yeast as both phosphorus and carbon precursor. It was found that Ni x P with pure Ni 12 P 5 , almost pure Ni 2 P or mixed crystal phases could be obtained by simply adjusting Ni:P molar ratio in precursor and pyrolysis temperature. Interestingly, the variation of Ni x P crystal phases remarkably affected photocatalytic removal efficiency of SMX. The obtained Ni x P(1:4)− 900 sample with mixed phases of Ni 12 P 5 and Ni 2 P displayed excellent photodegradation performance with 98.71% removal efficiency for SMX ( C 0 = 20 mg L −1 ) in ErB-sensitized photocatalytic system. Moreover, the reusability of Ni x P/biocarbon composite was confirmed by four consecutive runs. The slight loss of activity in recycle study could be fully recovered after thermal regeneration. Further investigation indicated that photo-generated electrons from excited ErB molecules could be transferred to Ni x P/biocarbon, triggering a series of reactions to form various reactive oxygen species (eg., •O 2 − , H 2 O 2 , •OH) for SMX degradation. The better photocatalytic activity of Ni x P mixed crystal phases should be ascribed to its faster electron transfer ability. Overall, this study provides useful guidance in terms of the development of transition metal phosphide and efficient photocatalytic system.
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