Water, Air, & Soil Pollution最新文献

{"title":"Synergistic Integration of Fenton Oxidation and ZIF-8 Adsorption: A Novel Strategy for Dual Arsenic Species Removal in Wastewater","authors":"Shuyan Zang,&nbsp;Shuai Wang,&nbsp;Xue Li,&nbsp;Xinru Chen,&nbsp;Qian Wang,&nbsp;Juan Wang","doi":"10.1007/s11270-025-08626-3","DOIUrl":"10.1007/s11270-025-08626-3","url":null,"abstract":"<div><p>The removal of both organic and inorganic arsenic is crucial for safeguarding the environment and human health, which constitutes a key aspect of sustainable development. In this study, a novel method integrating Fenton oxidation with ZIF-8 adsorption was developed for the simultaneous treatment of roxarsone (ROX) and arsenite (As(III)) from wastewater. ZIF-8 was hydrothermally synthesized and characterized using X-ray Photoelectron Spectroscopy (XPS), Fourier Transform Infrared Spectroscopy (FT-IR), X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Elemental Mapping (EM), Brunauer–Emmett–Teller (BET) surface area analysis, and zeta potential analysis. Comprehensive characterization demonstrated that the synthesized ZIF-8 exhibited a well-defined rhombic dodecahedral morphology with smooth crystal surfaces and an exceptionally high specific surface area of 1836.23 m²/g. Under the optimized conditions for Fenton oxidation (4.90 mmol/L H₂O₂, 0.1380 g/L FeSO₄·7H₂O, pH 3, 30 min) and ZIF-8 adsorption (0.1 g/L ZIF-8, pH 6, 180 min, 25℃), the integrated system exhibited remarkable removal efficiencies of 92.32% for ROX (20 mg/L) and 95.16% for As(III) (1 mg/L). Specifically, compared to the individual processes, the removal efficiency of ROX was increased by 20.59% (versus Fenton-only) and 52.63% (versus ZIF-8-only), while that of As(III) was enhanced by 29.17% and 35.51%, respectively. Additionally, the integrated system exhibited maximum adsorption capacities of 107.76 mg/g for ROX and 17.70 mg/g for As(III), further confirming the presence of synergistic effects between Fenton oxidation and ZIF-8 adsorption. The adsorption processes for ROX and As(III) followed pseudo-second-order kinetics and were best described by the Langmuir adsorption model, suggesting chemisorption and monolayer adsorption on a homogeneous surface. The removal mechanism in the synergistic method involved three primary pathways: oxidation reactions (•OH), electrostatic interactions (-OH/-NH₂), and precipitation (FeAsO₄). This study demonstrates that the proposed synergistic method (Fenton@ZIF-8) is a promising technology for the simultaneous removal of both organic and inorganic arsenic species from contaminated water, with strong potential for practical application in wastewater remediation.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 15","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227943","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":"Mechanism and Improvement of Electrocoagulation Technology for Removing Microplastics from Wastewater-Current Status and Future Directions","authors":"Siao Zhang,&nbsp;Sen Wang,&nbsp;Zeng Liu,&nbsp;Xi He,&nbsp;Lifeng Shi,&nbsp;Yukuo Liu,&nbsp;Hao Wang","doi":"10.1007/s11270-025-08672-x","DOIUrl":"10.1007/s11270-025-08672-x","url":null,"abstract":"<div><p>Electrocoagulation (EC) presents a highly efficient and sustainable solution for microplastic (MPs) removal from wastewater, offering advantages of operational simplicity, minimal sludge production, and reduced chemical usage compared to conventional methods. This review critically analyzes the current state and mechanisms of EC for MPs remediation, encompassing charge neutralization, sweep flocculation, electro-flotation, and oxidative degradation facilitated by electrochemically generated reactive species. The critical influence of operational parameters—electrode material (e.g., Al, Fe, composites), configuration, current density, pH, and inter-electrode spacing—on removal efficiency is evaluated. Crucially, the role of dissolved organic matter (DOM) in real matrices, impacting MPs removal via adsorption competition or synergistic co-removal, is addressed. Advancements in reactor design (e.g., turbulent/serpentine flow) and power supply (e.g., pulsed current mitigating passivation) are detailed. Hybrid EC systems (e.g., EC-electrooxidation, EC-membrane filtration) demonstrate superior MPs removal (&gt; 95%). While highly effective (&gt; 90% optimized), challenges regarding MPs properties (type, size, shape), DOM complexity, and scale-up requirements are identified. Future research priorities include optimizing configurations, elucidating degradation pathways, developing cost-effective electrodes, and pilot-scale validation for industrial implementation.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 15","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145256094","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":"Novel Filamentous Algae Nutrient Scrubber (FANS) for Agricultural Drainage Nutrient Removal and Recovery","authors":"Harizah B. Hariz,&nbsp;Valerio Montemezzani,&nbsp;Yeri Shim,&nbsp;Denise Rendle,&nbsp;Curtis Picken,&nbsp;James Sukias,&nbsp;Mashanta Mohsin,&nbsp;Jason B. K. Park,&nbsp;Rupert J. Craggs","doi":"10.1007/s11270-025-08640-5","DOIUrl":"10.1007/s11270-025-08640-5","url":null,"abstract":"<div><p>Filamentous algae nutrient scrubbers (FANS) have the potential to recover nutrients from agricultural drainage. This study was conducted on two dairy farms in North Waikato, New Zealand, with the aim of evaluating different FANS configurations for nutrient removal, algae productivity and nutrient recovery from agricultural drainage across seasons. We compared the performance of three different configurations of FANS: standard FANS with filamentous algae attached to a bottom surface (textured liner) (water depth: 19 mm; hydraulic retention time (HRT): 9 min; horizontal water velocity (HWV): 0.0006 m s⁻¹) and novel suspended FANS with algae attached to a floating mesh with a water depth of either 38 mm (shallow) or 214 mm (deep) (18 and 102 min HRT; 0.011, and 0.022 m s⁻¹ HWV respectively). Algae productivity and nutrient removal rates varied seasonally in all FANS configurations with summer values of up to five-fold (productivity), four-fold (nitrate removal) and three-fold (phosphate removal) higher than in winter. Shallow suspended FANS were the best configuration in warmer months with the highest biomass productivity on both farms (4.3–5.1 g VS m⁻².d in summer) and (3.7–3.8 g VS m⁻².d in spring). While during colder months, algae productivity was relatively similar for all FANS configurations. Moreover, shallow suspended FANS had the highest nutrient removal rates throughout the year of monitoring. This study highlights the potential of shallow suspended FANS as a better operation mode than standard FANS. Algae species relative abundance also varied across FANS configuration, with greater dominance of green filamentous algae with increasing FANS depth, providing a more consistent biomass quality year-round which may be important for beneficial use options.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 15","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227892","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":"Novel Gas-Bubbled Immobilized Algal Cultures for the Bioremediation of Natural Waters: Exploring Applications in Aquaculture","authors":"Kübra Özenç,&nbsp;Serdar Göncü","doi":"10.1007/s11270-025-08659-8","DOIUrl":"10.1007/s11270-025-08659-8","url":null,"abstract":"<div><p>The biological treatment of nitrogen- and phosphorus-rich waters is increasingly adopting algal cultures over traditional methods. Algae-based treatment offers advantages, including lower energy and chemical use, and generation of reusable biomass. In this study, nitrogen and phosphorus were removed from natural waters using a novel gas-bubbled, immobilized <i>Chlorella vulgaris</i> (<i>C. vulgaris</i>) culture, developed through a patented method (TR2022051245W). This method enables buoyant immobilization, enhancing light exposure, removing the need for post-treatment separation (e.g., filtration), and facilitating harvesting even in high-turbidity waters. Experiments were conducted using a bench-scale batch reactor system. Process optimization was carried out using a 3 × 3 Taguchi design to assess nutrient removal efficiencies under various combinations of light–dark cycle duration, pH levels, and aeration rates. After 45 h of treatment, removal efficiencies reached 78.30% for nitrate nitrogen (NO₃⁻-N), 95.98% for ammonium nitrogen (NH₄⁺-N) and 99.54% for phosphate (PO₄⁻³). Post-treatment analysis showed that the immobilized algal biomass exhibited a 9.1% increase in dry matter, a 200% increase in protein content, and a 191% increase in total nitrogen, with preliminary qualitative observations highlighting its potential as a sustainable feedstock for aquaculture; however, comprehensive quantitative feeding trials are planned for future studies to fully validate this application. While the results promising, the batch-scale setup, limited experimental replications, and 45-h treatment duration may present scalability challenges without innovations in hydraulic retention time, which are discussed in detail in the manuscript. This study introduces a novel buoyant immobilization approach to algae-based bioremediation, offering efficient nutrient removal and valuable resource recovery within a circular economy framework.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 15","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227917","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":"Comparative Study of Cyanine Acid Dye Removal By ZnO and CuO Nanoparticles Decorated On Activated Carbon From Banana Peel","authors":"Ahmah Rafat,&nbsp;Saeedeh Hashemian,&nbsp;Masoud Reza Shishabor","doi":"10.1007/s11270-025-08435-8","DOIUrl":"10.1007/s11270-025-08435-8","url":null,"abstract":"<div><p>Activated carbon from banana peel was prepared using calcination of banana peel as biomass at 600 ̊C (ACB). ZnO and CuO nanoparticles were synthesis and decorated on ACB, respectively. The prepared samples were characterized by FTIR, XRD, FESEM, EDX, TGA and BET methods. The results showed ZnO and CuO decorated on ACB have particle size of 45nm and 38 nm and surface area of 242 m² g⁻¹ and 325 m² g⁻¹, respectively. The produced samples were studied as sorbents for removal of cyanine acid blue dye (CAB) from aqueous solutions. The adsorption efficiency was examined by varying process parameters such as contact time, pH and mass of sorbents. Results showed the order of percent removal of CAB at contact time 60 min and pH 10 was as follow: ACB &lt; ZnO &lt; CuO &lt; ZnO decorated on ACB &lt; CuO decorated on ACB. CuO decorated on ACB with interconnected pores and band gap 1.42 eV demonstrated excellent adsorption activity for CAB. The kinetic study revealed the fitness of pseudo second order kinetic model for the absorption of CAB dye. Thermodynamic parameters presented endothermic and spontaneous adsorption of CAB onto sorbents. TOC analysis showed the mineralization of CAB dye was about 62%. This study presented cost effective synthesis and reusability of ZnO and CuO decorated on ACB that is highly effective for adsorption of CAB.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 15","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145256603","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":"Distinct Influence of Conventional and Biodegradable Microplastics on Soil Microorganisms and Nitrogen Cycling: Emphasizing the Effect of Biodegradable Polylactic Acid","authors":"Yuxin Ruan,&nbsp;Liangbin Lin,&nbsp;Yiyong Lin,&nbsp;Yanru Zhang,&nbsp;Jianfei Chen,&nbsp;Qingrong Qian","doi":"10.1007/s11270-025-08629-0","DOIUrl":"10.1007/s11270-025-08629-0","url":null,"abstract":"<div><p>Biodegradable plastics are a feasible option to reduce plastic pollution, but the environmental effects of their release of microplastics (MPs) into the soil are still unclear. In this study, three typical types of MPs: polyethylene, polyvinyl chloride, and biodegradable polylactic acid (PLA), with two particle sizes, were selected to systematically investigate the effects of short-term (one month) exposure to MPs on soil physicochemical properties, enzyme activities, and bacterial community structure and functions. The results showed that MPs exposure apparently increased the total organic carbon (TOC) and total nitrogen contents (TN) by 27.08–48.58% and 4.5–20.9%, respectively, while decreasing the ammonium nitrogen (NH₄⁺-N) and nitrate nitrogen (NO₃⁻-N) contents by 56.5–68.8% and 3.2–24%, respectively, but had no significant effect on pH and total phosphorus (TP) content. Small particle size (50 μm) MPs and PLA-MP had greater effects on soil enzyme activity. 50 μm PLA significantly decreased soil bacterial diversity (decreased by 9%, <i>P</i> &lt; 0.05) and caused greater changes in bacterial community compositions and functions than other MPs. <i>Nocardioides</i> and <i>Bacillus</i> were proposed as MPs-degraders due to they were specifically enriched by MPs. Short-term exposure to MPs inhibited the nitrification process and organic degradation and synthesis processes, but enhanced the denitrification and nitrogen fixation processes. Our study highlighted the effect of smaller particle sizes of biodegradable PLA-MP on soil microbial community structure and function.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 15","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227864","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":"Assessment and Remediation of Two Most Polluted Urban Sites of Yamuna River, India: An Algal-Based Approach","authors":"Pooja Baweja,&nbsp;Salam Sonia Devi,&nbsp;Dharmendra Kumar,&nbsp;Dinabandhu Sahoo","doi":"10.1007/s11270-025-08649-w","DOIUrl":"10.1007/s11270-025-08649-w","url":null,"abstract":"<div><p>Water pollution is a criticalw environmental issue affecting rivers and water bodies worldwide. River Yamuna particularly its 22 km stretch through Delhi, is one of the most polluted areas, often referred to as the \"dead stretch,\" contributing 80% of the river's total pollution. The present study investigates the physicochemical parameters and heavy metal content in water samples from two highly polluted sites, Geeta Colony and Sonia Vihar, and compares them with pond water. It also evaluates the effectiveness of phycoremediation using various microalgae strains, including <i>Scenedesmus sp.</i>, <i>Chlorella sp.</i>, <i>Chlorococcum sp.</i>, <i>Klebsormidium sp.</i>, and a Blue-Green Algae (BGA) consortium (<i>Phormidium</i> sp., <i>Spirulina</i> sp., <i>Cladophora</i> sp. <i>Gloeocapsa</i> sp.). The results show significantly higher pollution and heavy metal levels in the Yamuna River compared to pond water. At Sonia Vihar, the highest recorded pH was 8.7 ± 1.04, BOD was 5.6 ± 0.24 mg/L, nitrate (NO₃⁻) and chloride (Cl⁻) levels as 966.56 ± 19.51 mg/L and 872.22 ± 17.35 mg/L respectively. Geeta Colony had the highest salinity at 967 ± 18.56 PPM, conductivity at 2000 ± 46.7 µs/cm, COD at 13.6 ± 3.21 mg/L, and phosphate (PO₄³⁻) at 21.86 ± 2.01 mg/L. Heavy metals like zinc (129.81 ± 5.4 µg/L at Sonia Vihar) and lead (39.96 ± 3.21 µg/L at Geeta Colony) were significantly higher. Phycoremediation showed substantial pollutant removal potential, with the Blue Green Algae (BGA) consortium achieving the highest removal efficiency: 91.01% of NO₃⁻, 78.9% of PO₄³⁻, 87.45% of sulfate (SO₄²⁻), and 80.44% of Cl⁻. <i>Scenedesmus</i> sp. effectively reduced biological oxygen demand (BOD) and chemical oxygen demand (COD), removing 83.08% of NO₃⁻, 69.03% of PO₄³⁻, 53.88% of SO₄²⁻, and 65.25% of Cl⁻. <i>Chlorella</i> sp. showed the highest Cl⁻ removal. The study underscores the severe pollution in the Yamuna River and the potential of algae-based remediation techniques to improve water quality.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 15","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227931","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":"Microwave Pyrolysis for Efficient Treatment of Radioactive Oil Sludge Waste: Experimental and Machine Learning Approaches","authors":"Claudia Monteiro Paixão,&nbsp;Júlio Takehiro Marumo,&nbsp;Roberto Vicente,&nbsp;Leandro Goulart de Araujo","doi":"10.1007/s11270-025-08664-x","DOIUrl":"10.1007/s11270-025-08664-x","url":null,"abstract":"<div><p>Oil sludge waste (OSW) represents a substantial liability for the oil industry, given its composition of water, crude oil (heavier fractions), and sediments, as well as the presence of naturally occurring radioactive materials (NORM). This study presents a novel approach focused on the microwave-based drying of OSW containing NORM, a topic that has received little to no attention in the literature. While microwave pyrolysis has been explored for sludge treatment in general, previous studies have not addressed the specific challenges associated with the safe drying and volume reduction of radioactive OSW. Moreover, to the best of our knowledge, no prior work has applied machine learning algorithms to model and interpret the relationship between OSW composition and process performance during microwave drying of such complex waste. In this study, a dedicated system was developed to selectively remove water and oil from OSW while concentrating the radioactive content in the solid fraction, enabling safer and more compact disposal. The system was designed to take advantage of rapid and selective volumetric heating promoted by microwave irradiation, and to facilitate the capture of volatile compounds and radionuclides at the gas outlet. The process resulted in an average condensate recovery of 71% under microwave power of 993 W and a total treatment time of 15 min. The findings demonstrated that microwave treatment was an effective approach for treating OSW and obtaining dry sediment from samples with higher water and oil content.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 15","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227936","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":"Coagulation-based Physicochemical Removal of Polyester and Polypropylene from Wastewater: Impact of Experimental Conditions and Colloidal Charges","authors":"Muhammad Tariq Khan","doi":"10.1007/s11270-025-08596-6","DOIUrl":"10.1007/s11270-025-08596-6","url":null,"abstract":"<div><p>Microplastics (MPs) have been identified as a global environmental and health threat due to their existence in diverse ecosystems. The level of exposure to these unregulated emerging contaminants defines the potential harm to the environment and public health. Several treatment technologies have been used to remove MPs from wastewater. However, the existing treatment technologies have failed to achieve complete elimination of MPs and require additional energy and cost. This study focused on removing MPs from simulated wastewater using iron chloride (FeCl₃) coagulation. Jar test experiments were conducted to determine the removal efficiency of target MPs polyester (PEST) and polypropylene (PP). Zeta potential (ZP), Fourier Transform Infrared (FTIR), and Scanning Electron Microscopy (SEM) techniques were used to investigate the PEST and PP removal mechanism. The removal efficiency for both types of MPs was influenced by various experimental conditions, including pH, dosage of used coagulant, settling time, and stirring speed. The highest removal efficiencies for PEST and PP at the optimum dosage of FeCl₃ (4.57 mg/L) and pH (7) were 95 ± 1.10% and 61.50 ± 1.32%, respectively. However, these removal efficiencies slightly declined to 91 ± 1.00% for PEST and 59.50 ± 1.00% for PP when the coagulant dosage was increased to 5 mg/L, which showed that charge inversion occurred at a high dosage. The mechanisms for removing MPs were identified as charge neutralization and adsorption. This was demonstrated by the SEM images that agglomeration and adsorption occurred in the PEST/PP and coagulant system. The ZP changes and elemental confirmation by FTIR spectra further confirmed the formation of new bonds during the interaction between PEST/PP and FeCl₃. This study presents a potential solution by providing an effective and efficient technology for MP removal from synthetic wastewater. However, it is of significant importance to replicate this in real-world wastewater problems and further research.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 15","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227941","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":"Recovery of Metals from Stainless-Steel Wastewater for Their Catalytic Application in the Biodegradation of 2,4,6-Trichlorophenol","authors":"Francisco J. Mares-Carbajal,&nbsp;Aurora M. Pat-Espadas,&nbsp;Petia Mijaylova,&nbsp;Francisco J. Cervantes","doi":"10.1007/s11270-025-08660-1","DOIUrl":"10.1007/s11270-025-08660-1","url":null,"abstract":"<div><p>2,4,6-Trichlorophenol (TCP) is a widely used compound in various industrial sectors, posing a significant threat to both environmental and human health. To address this issue, a novel treatment system is proposed, employing anaerobic sludge enriched with metals recovered from a metallurgical effluent as a biocatalyst for TCP biodegradation. The enrichment of anaerobic sludge with recovered metals (1%, wt/wt) enhanced TCP removal efficiency, achieving 86.7% degradation after 24 h of incubation, compared to only 72.1% in the unamended control (38% increase in degradation rate). Metabolites analysis revealed the formation of 2,4-dichlorophenol, 4-chlorophenol, and phenol as intermediate degradation products, which were generated and subsequently degraded more rapidly in the enriched system than in the control. The stoichiometric release of chloride ions further confirmed reductive dehalogenation as the primary degradation pathway. Additionally, the presence of Fe(III) minerals is proposed to contribute as electron acceptors, thereby enhancing the degradation process. This treatment strategy is consistent with the principles of circular economy. It demonstrates the potential reuse of metals recovered from industrial wastewater to serve as biocatalysts in anaerobic treatment systems, which may promote the removal of a broad range of emerging contaminants. This approach could be particularly effective in the treatment of wastewaters from hospitals, as well as the pharmaceutical and chemical industries.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 15","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11270-025-08660-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}