Water, Air, & Soil Pollution最新文献

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Effect of ZnO and MnO2 Incorporation On Ciprofloxacin Adsorption By Electrochemically Exfoliated graphene@ZnO@MnO2 Nanocomposite ZnO和MnO2掺入对电化学剥离纳米复合材料吸附环丙沙星graphene@ZnO的影响
IF 3.5 4区 环境科学与生态学
Water, Air, & Soil Pollution Pub Date : 2026-10-13 DOI: 10.1007/s11270-026-10073-7
Le Phuong Hoang, Thi Thao Truong, Van-Truong Nguyen, Nguyen Thi Thuy Hang
{"title":"Effect of ZnO and MnO2 Incorporation On Ciprofloxacin Adsorption By Electrochemically Exfoliated graphene@ZnO@MnO2 Nanocomposite","authors":"Le Phuong Hoang,&nbsp;Thi Thao Truong,&nbsp;Van-Truong Nguyen,&nbsp;Nguyen Thi Thuy Hang","doi":"10.1007/s11270-026-10073-7","DOIUrl":"10.1007/s11270-026-10073-7","url":null,"abstract":"<div><p>Ciprofloxacin (CIP), a widely detected fluoroquinolone antibiotic in aquatic environments, has raised increasing concern due to its persistence and potential environmental risks. In this study, graphene (ESG) and graphene@ZnO@MnO<sub>2</sub> nanocomposite (ESG@ZnO@MnO<sub>2</sub>) were synthesized via electrochemical exfoliation and comparatively evaluated for CIP removal from aqueous solution. Characterization results confirmed the successful incorporation of ZnO and MnO<sub>2</sub> onto graphene sheets and revealed enhanced surface properties of the nanocomposite. ESG@ZnO@MnO<sub>2</sub> exhibited a higher specific surface area (56.28 m<sup>2</sup> g<sup>−1</sup>) than ESG (37.54 m<sup>2</sup> g<sup>−1</sup>). The removal efficiency was strongly dependent on solution pH, reaching optimal performance at pH 7. Kinetic data were well fitted by the pseudo-second-order model, suggesting that surface interactions played an important role in the adsorption process. Equilibrium data were best described by the Sips isotherm model, indicating energetically heterogeneous adsorption sites. Under identical conditions, the Langmuir maximum adsorption capacity of ESG@ZnO@MnO<sub>2</sub> (131.58 mg g<sup>−1</sup>) was nearly double that of ESG (66.98 mg g<sup>−1</sup>), reflecting the combined contribution of graphene and metal oxide components toward enhanced CIP removal. Thermodynamic analysis indicated that the adsorption process was spontaneous and endothermic. Mechanistic analysis suggested that weak electrostatic interactions, hydrogen bonding, π–π interactions, and possible coordination with surface metal oxide sites collectively contributed to CIP adsorption. In addition, ESG@ZnO@MnO<sub>2</sub> retained 80.65% of its removal efficiency after five regeneration cycles, demonstrating good stability and reusability. These findings demonstrate that electrochemically synthesized graphene-based nanocomposites are promising and environmentally friendly adsorbents for the efficient removal of antibiotic contaminants from water.</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":"237 23","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189378","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}
引用次数: 0
Iron-modified Calcinated Coconut Fiber Biochar for Simultaneous Removal of Copper and Zinc: Optimization, Production Cost Assessment, and Machine Learning Modeling 铁改性焙烧椰子纤维生物炭同时去除铜和锌:优化,生产成本评估和机器学习建模
IF 3.5 4区 环境科学与生态学
Water, Air, & Soil Pollution Pub Date : 2026-10-13 DOI: 10.1007/s11270-026-10060-y
Xuan Thanh Bui, Thuy Trang Khuat, Phacharapol Induvesa, Nguyen Thuy Chung
{"title":"Iron-modified Calcinated Coconut Fiber Biochar for Simultaneous Removal of Copper and Zinc: Optimization, Production Cost Assessment, and Machine Learning Modeling","authors":"Xuan Thanh Bui,&nbsp;Thuy Trang Khuat,&nbsp;Phacharapol Induvesa,&nbsp;Nguyen Thuy Chung","doi":"10.1007/s11270-026-10060-y","DOIUrl":"10.1007/s11270-026-10060-y","url":null,"abstract":"<div><p>This study developed and evaluated an iron modified biochar (AcBC) from coconut fiber in Ben Tre, Vietnam, for the adsorption of Cu<sup>2</sup>⁺ and Zn<sup>2</sup>⁺. Characterization (SEM–EDS, BET, XRD, FTIR) showed that mineral rich coconut fiber pyrolyzed without inert gas undergoes strong surface mineralization, forming crystalline silicates that block pores and functional groups, resulting in raw biochar (RBC) with low surface area, limited porosity, and few active sites. After iron salt co precipitation with NaOH, AcBC exhibited major improvements, including a nearly 20- fold increase in surface area form 5 to 100 m<sup>2</sup>/g, well developed mesopores, and the return of functional groups. Silicate minerals also contributed to adsorption by providing active sites and supporting iron oxide and iron silicate formation. AcBC achieved about twenty percent higher removal efficiency and maximum capacities of 34.75 mg/g for Cu<sup>2</sup>⁺ and 29.69 mg/g for Zn<sup>2</sup>⁺, more than double those of RBC. To systematically describe the adsorption mechanisms, four kinetic models (pseudo-first-order, pseudo-second-order, Weber-Morris intraparticle diffusion, and Boyd) and four isotherm models (Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich) were utilized. Crucially, tree-based machine learning interpreted via SHAP analysis successfully quantified the mechanisms; Extreme Gradient Boosting accurately predicted adsorption capacity R<sup>2</sup> &gt; 92%, identifying specific surface area, % Si, and % O as the most important material properties, while that of cation descriptors relative atomic mass, effective ionic radius and first order hydrolysis constants. With low cost production, simple synthesis, and strong performance, AcBC represents a practical and scalable option for treating heavy metal contaminated wastewater in developing regions.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"237 23","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189205","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}
引用次数: 0
Biochar Synthesis from Watermelon Rind Waste: Characterization of Physicochemical and Adsorption Properties 西瓜皮废弃物合成生物炭:理化及吸附性能表征
IF 3.5 4区 环境科学与生态学
Water, Air, & Soil Pollution Pub Date : 2026-10-12 DOI: 10.1007/s11270-026-10035-z
Ahmed M. Kamil, Anitha C. Kumar, Jephin K. Jose, Sabu Thomas
{"title":"Biochar Synthesis from Watermelon Rind Waste: Characterization of Physicochemical and Adsorption Properties","authors":"Ahmed M. Kamil,&nbsp;Anitha C. Kumar,&nbsp;Jephin K. Jose,&nbsp;Sabu Thomas","doi":"10.1007/s11270-026-10035-z","DOIUrl":"10.1007/s11270-026-10035-z","url":null,"abstract":"<div><p>In recent years, sustainable and cost-efficient wastewater treatment technology has been pursued using biomass-based adsorbents. This study investigates the conversion of watermelon rind into biochar (WRB), comparing its yields, physicochemical properties, and adsorption capacities across three pyrolysis temperatures at two residence times. The biochar produced from watermelon rind was 37.5%, 32.6%, and 30.6% at 400, 500, and 600 °C, respectively, at a residence time of 1 h. When the residence time was extended to 3 h, the yields decreased to 33.9%, 29.8%, and 25.9%, respectively. Proximate analysis presents increased fixed carbon and reduced volatile content. Ultimate analysis, X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FTIR) spectra expose structural differences exhibiting higher aromatic content at elevated pyrolysis temperatures, while pyrolysis-induced loss of functional groups like hydroxyl (O–H) and carboxyl (-COOH) bonds diminished biochar adsorption properties. The biochar produced at 400 °C in 1 h exhibited the highest adsorption capacity. The effects of initial concentration of safranine dye (SMS), contact time, pH, and temperature on adsorption efficiency were measured through batch adsorption experiments. The experimental results were fitted using the Langmuir isotherm (q<sub>max</sub> = 34.965 mg g<sup>−1</sup>) and pseudo-second-order model. The adsorption process is found to be spontaneous and endothermic. The results suggest that biochar can be used as an effective, economical, and eco-friendly adsorbent in the removal of cationic dyes in our experiment and has great potential in terms of large-scale treatment of wastewater.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"237 23","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189049","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}
引用次数: 0
ZnO Nanoparticle-Reinforced Sodium Alginate/Poly(vinylpyrrolidone) Microbeads for Efficient Removal of Methylene Blue from Aqueous Solutions ZnO纳米颗粒增强海藻酸钠/聚(乙烯基吡咯烷酮)微珠高效去除水溶液中的亚甲基蓝
IF 3.5 4区 环境科学与生态学
Water, Air, & Soil Pollution Pub Date : 2026-10-12 DOI: 10.1007/s11270-026-10075-5
Sedanur Altun, Mustafa Ersin Pekdemir, Ahmet Ulu
{"title":"ZnO Nanoparticle-Reinforced Sodium Alginate/Poly(vinylpyrrolidone) Microbeads for Efficient Removal of Methylene Blue from Aqueous Solutions","authors":"Sedanur Altun,&nbsp;Mustafa Ersin Pekdemir,&nbsp;Ahmet Ulu","doi":"10.1007/s11270-026-10075-5","DOIUrl":"10.1007/s11270-026-10075-5","url":null,"abstract":"<div><p>In this study, ZnO nanoparticle (NP)-reinforced sodium alginate/poly(vinylpyrrolidone) (SA/PVP) microbeads were developed as efficient adsorbents for the removal of methylene blue (MB) from aqueous solutions. ZnO NPs were synthesized via a hydrothermal method and subsequently incorporated into a SA/PVP polymer matrix. The resulting mixture was introduced dropwise into a CaCl₂ crosslinking solution using a syringe-assisted dripping technique to produce ZnO NP-loaded microbeads. The synthesized ZnO NPs were characterized by UV–Vis spectroscopy, dynamic light scattering (DLS), scanning electron microscopy (SEM), and X-ray diffraction (XRD), while the structural and thermal properties of the prepared microbeads were analyzed using ATR-IR, SEM–EDX, XRD, and thermogravimetric analysis (TGA). The adsorption performance of the ZnO NP-reinforced SA/PVP microbeads toward MB was evaluated by investigating the effects of ZnO loading, initial dye concentration, pH, adsorbent dosage, contact time, and temperature. Under optimal conditions (pH 7–8, adsorbent dosage 16.4 mg, temperature 313 K, and contact time 6 h), the maximum MB removal efficiency reached 83.85%. Adsorption kinetics followed the pseudo-second-order model, while equilibrium data were best described by the Freundlich isotherm model, with a Langmuir maximum adsorption capacity of 29.76 mg g⁻<sup>1</sup>. Thermodynamic analysis indicated that the adsorption process was endothermic and thermally assisted. Moreover, the suggested microbeads exhibited the high reusability and adsorption rate (∼93%) without significant loss after sixth adsorption–desorption cycles. The adsorption mechanism was mainly governed by electrostatic interactions, hydrogen bonding, and van der Waals forces between MB molecules and functional groups of the ZnO NP-reinforced SA/PVP microbeads. These findings demonstrate that the developed hybrid microbeads offer promising potential for environmental remediation of dye-contaminated water.</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":"237 23","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149188987","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}
引用次数: 0
Evaluation of the Most Important Variables for Aerobic Biodegradation of Hyper-saline Phenolic Wastewater by Artificial Neural Network 人工神经网络评价高盐酚醛废水好氧生物降解最重要变量
IF 3.5 4区 环境科学与生态学
Water, Air, & Soil Pollution Pub Date : 2026-10-12 DOI: 10.1007/s11270-026-10061-x
Faeze Hashemi, Mehdi Ahmadi, Heydar Maleki, Mohammad Rafiee, Neamatollah Jaafarzadeh, Ali Akbar Babaei
{"title":"Evaluation of the Most Important Variables for Aerobic Biodegradation of Hyper-saline Phenolic Wastewater by Artificial Neural Network","authors":"Faeze Hashemi,&nbsp;Mehdi Ahmadi,&nbsp;Heydar Maleki,&nbsp;Mohammad Rafiee,&nbsp;Neamatollah Jaafarzadeh,&nbsp;Ali Akbar Babaei","doi":"10.1007/s11270-026-10061-x","DOIUrl":"10.1007/s11270-026-10061-x","url":null,"abstract":"<div><p>Aerobic granular sequencing batch reactor (AGSBR) offers a promising biological solution for treating toxic and saline industrial wastewaters. In this study, AGSBR was cultivated from a mixed microbial consortium over 115 days and subsequently operated for 220 days (total operation: 335 days) to remove phenol from synthetic saline effluents. A multilayer perceptron artificial neural network (ANN) was employed to evaluate the relative importance of influent phenol concentration (IPC), total dissolved solids (TDS), and aeration time (AT) on process performance. The results showed that increase of IPC from 100 to 500 mg/L reduced the highest phenol removal from 100 to 83%. Prolonging AT from 6 to 18 h enhanced removal efficiency from 64 to 83% at 500 mg/L phenol, while elevating TDS from 10 to 30 g/L (1 to 3%) decreased efficiency from 83 to 75% under the same phenol concentration. Sensitivity analysis revealed that TDS and AT were approximately twice as influential as IPC in determining phenol removal efficiency. These findings underscore the critical roles of salinity control and aeration management in maintaining effective phenol biodegradation. Accordingly, for robust and reliable treatment of hypersaline phenolic wastewater, strict regulation of TDS and AT is strongly recommended.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"237 23","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189047","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}
引用次数: 0
Remediation of Heavy Metal-Contaminated Soils in Alpine and Arid Mining Regions: Synthesis and Performance of a Multifunctional Amendment 高寒和干旱矿区重金属污染土壤的修复:多功能改良剂的合成与性能
IF 3.5 4区 环境科学与生态学
Water, Air, & Soil Pollution Pub Date : 2026-10-12 DOI: 10.1007/s11270-026-10039-9
Jie Zhou, Peicong Zhang, Jianhua Liu, Yi Huang, Jialin He, Jinshu Zhang, Yubin Li, Chengye Yang
{"title":"Remediation of Heavy Metal-Contaminated Soils in Alpine and Arid Mining Regions: Synthesis and Performance of a Multifunctional Amendment","authors":"Jie Zhou,&nbsp;Peicong Zhang,&nbsp;Jianhua Liu,&nbsp;Yi Huang,&nbsp;Jialin He,&nbsp;Jinshu Zhang,&nbsp;Yubin Li,&nbsp;Chengye Yang","doi":"10.1007/s11270-026-10039-9","DOIUrl":"10.1007/s11270-026-10039-9","url":null,"abstract":"<div><p>Heavy metal (HM) contamination, freeze–thaw (F-T) cycling, and dry, nutrient-poor conditions jointly degrade the soils of lead–zinc mining areas on the Qinghai–Tibet Plateau (QTP) and severely inhibit plant growth. To address these problems, a multifunctional inorganic–organic composite amendment was developed from locally sourced solid wastes. The composite amendment prepared at the optimal mass ratio of diatomite, biochar, gypsum, magnesium hydroxide, and soil (5:6:1:1.45:103, designated as EK) significantly improved soil physicochemical properties: water saturation increased by 14.71%, whereas daily evaporation decreased by 23.33%. In addition, the cation exchange capacity (CEC), phosphorus retention, and potassium retention increased by 44.88%, 20.34%, and 100.70%, respectively. Under F-T conditions, the modified soil showed a two- to three-fold improvement in both adsorption capacity (Q<sub>e</sub>) and removal efficiency (R) for different HMs in single- and multi-metal systems when compared to the control (CK). The removal efficiency of Pb<sup>2+</sup> was especially high, at over 80%. Isotherm analysis showed that the experimental adsorption data for Pb<sup>2+</sup> and Zn<sup>2+</sup> were well described by the Freundlich isotherm model, suggesting that the adsorption mainly occurred on energetically heterogeneous surfaces. The kinetic studies showed that the adsorption of Pb<sup>2+</sup> followed the pseudo-second-order model, while that of ions with smaller ionic radii (Zn<sup>2+</sup>, Cu<sup>2+</sup>, Cd<sup>2+</sup>) was better fitted by the pseudo-first-order model. The effect of EK on plant growth was further investigated in a pot experiment with rye. EK improved rye growth even under the combined stresses of F–T cycling and HM contamination, demonstrating its application potential for soil remediation in lead–zinc mining areas of the QTP.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"237 23","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189048","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}
引用次数: 0
Innovative Bio-sorption of Pb2+ and Cu2+ from Wastewater Samples using Cannabis sativa L. Buds: Kinetics, Isotherm and Re-usability Studies 大麻芽对废水中Pb2+和Cu2+的生物吸附:动力学、等温线和再利用研究
IF 3.5 4区 环境科学与生态学
Water, Air, & Soil Pollution Pub Date : 2026-10-12 DOI: 10.1007/s11270-026-10040-2
Thandeka Mbatha, Precious Mahlambi, Sandisiwe Zondo
{"title":"Innovative Bio-sorption of Pb2+ and Cu2+ from Wastewater Samples using Cannabis sativa L. Buds: Kinetics, Isotherm and Re-usability Studies","authors":"Thandeka Mbatha,&nbsp;Precious Mahlambi,&nbsp;Sandisiwe Zondo","doi":"10.1007/s11270-026-10040-2","DOIUrl":"10.1007/s11270-026-10040-2","url":null,"abstract":"&lt;div&gt;&lt;p&gt;Heavy metal pollution, mainly from industrial wastewater, is an ongoing worldwide concern that threatens water quality. The present study investigated the potential of &lt;i&gt;Cannabis sativa&lt;/i&gt; L&lt;i&gt;.&lt;/i&gt; buds, both raw and chemically modified with glycine and sodium bicarbonate, to decontaminate Lead (Pb&lt;sup&gt;2+&lt;/sup&gt;) and Copper (Cu&lt;sup&gt;2+&lt;/sup&gt;) ions from wastewater. Fourier transform Infrared spectroscopy results showed that the chemical modification process altered the surface functional groups, as evidenced by shifts in the functional group peak intensities of the modified bio-adsorbents compared to those of the unmodified bio-adsorbent before adsorption. After the adsorption process, a reduction in peak intensities was observed due to adsorption interactions with metal ions. Scanning electron microscopy revealed an irregular and multi-layered surface with interconnected pore network structures of all assessed bio-adsorbents. However, sodium bicarbonate modified cannabis appeared to be more porous than both bio-adsorbents. Energy-dispersive X-ray spectroscopy identified carbon and oxygen as the major elemental components of the bio-adsorbents. X-ray diffraction spectroscopy revealed that the sodium bicarbonate modified bio-adsorbent exhibited a more crystalline form, while thermogravimetric analysis showed that it was more stable than glycine and raw cannabis biomaterial. These findings indicate that bio-adsorbents exhibit an enhanced adsorption capacity, whilst sodium bicarbonate modified cannabis is expected to perform better than the other bio-adsorbents. A batch adsorption method was employed and assessed by varying solution pH, temperature, mass dosage, initial metal concentration, and contact time in a binary system. The optimal adsorption conditions were determined to be a solution pH of 7, reaction time of 10 min, mass dosage of 10 mg, an initial adsorbate concentration of 10 mg/L, and an adsorption temperature of 25 ºC. According to the analysis of variance results, the effects of temperature and adsorbate concentration on the adsorption of metal ions showed the highest (&gt; 61%) and lowest (&gt; 3%) percentage contributions. The adsorption rates of Cu&lt;sup&gt;2+&lt;/sup&gt; and Pb&lt;sup&gt;2+&lt;/sup&gt; ions fitted a non-linear pseudo-first-order model, and the sorption mechanism was best described by a multilayered surface (the Freundlich isotherm). The metal ion adsorption process was found to be exothermic, spontaneous, and feasible. Sodium bicarbonate modified cannabis showed a larger maximum adsorption capacity (q&lt;sub&gt;max&lt;/sub&gt;) (31.222–56.875 mg/g) than glycine modified cannabis (28.983–53.888 mg/g) and raw cannabis (26.151–30.527 mg/g) for Cu&lt;sup&gt;2+&lt;/sup&gt; and Pb&lt;sup&gt;2+&lt;/sup&gt; ions, respectively. The percentage removal efficiency in real wastewater samples was 74–88% for the raw bio-adsorbent, 80–100% for glycine, and 96–100% for the sodium bicarbonate-modified bio-adsorbent for Cu&lt;sup&gt;2+&lt;/sup&gt; and Pb&lt;sup&gt;2+&lt;/sup&gt; ions, respectively. Though ","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"237 23","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11270-026-10040-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149188973","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}
引用次数: 0
Performance Assessment of fast Sand Filter for Water Pollution Removal: Head Loss Consideration 快砂过滤器去除水污染的性能评价:水头损失的考虑
IF 3.5 4区 环境科学与生态学
Water, Air, & Soil Pollution Pub Date : 2026-10-11 DOI: 10.1007/s11270-026-10070-w
Chaouche Meriem, Hachemi Abdelkader, Chebbi Meriem, Zeroual Ayoub
{"title":"Performance Assessment of fast Sand Filter for Water Pollution Removal: Head Loss Consideration","authors":"Chaouche Meriem,&nbsp;Hachemi Abdelkader,&nbsp;Chebbi Meriem,&nbsp;Zeroual Ayoub","doi":"10.1007/s11270-026-10070-w","DOIUrl":"10.1007/s11270-026-10070-w","url":null,"abstract":"<div><p>This study provides a short-term pilot-scale assessment of a rapid sand filter using locally available sand as a tertiary treatment process to improve the quality of treated wastewater in response to the limited implementation of advanced tertiary treatment systems in many wastewater treatment plants, particularly in water-stressed regions such as Algeria. The objective is to reduce water pollution to the recommended standard limits for potential reuse in agriculture and industrial processes, using a simple, low-cost, and locally available filter medium. Particular attention is also given to the critical role of filter media characteristics in filtration efficiency. Through granular analysis of particle size distribution, the effective diameter of the sand was 0.5 mm. The filter performance and removal efficiency of water quality parameters were evaluated using secondary treated wastewater collected from the wastewater treatment plant (WWTP) of Beni Merad. The initial physical and chemical characteristics of the wastewater were: total suspended solids (TSS) 132 mg/L, turbidity 10.2 NTU, chemical oxygen demand (COD) 128 mg O₂/L, and biochemical oxygen demand (BOD<sub><b>5</b></sub>) 95 mg O₂/L. The sand filter column was operated for six days, corresponding to 22 cumulative operating hours, at a constant filtration rate of 36 L.h-1, corresponding to a filtration velocity of 4.58 m·h⁻<sup>1</sup>. Treatment performance was evaluated through the removal of TSS, turbidity, COD, and BOD<sub><b>5</b></sub>, with filter achieved maximum removal efficiencies of 88.89%, 78.57%, 61.5%, and 47.83%, respectively. These findings show that local sand filtration can significantly improve the physicochemical quality of secondary treated wastewater, especially by reducing suspended solids, turbidity, and organic pollution. Hydraulic performance was monitored by continuously measuring head loss along the filter column. After 16 h of operation, head loss reached its maximum value of 0.61 m, indicating substantial hydraulic resistance and the onset of a backwashing requirement under the operating conditions used in this study and the filter was restarted for an additional 6 h. The main mechanisms governing sand filtration were sedimentation, mechanical trapping, particle accumulation within the filter bed, and adsorption onto sand grains. Overall, the results demonstrate the initial treatment and hydraulic response of the tested sand medium under real secondary wastewater conditions. local sand proved to be an effective, low-cost, and technically simple filter medium for tertiary wastewater treatment in short-term pilot-scale applications.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"237 23","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189093","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}
引用次数: 0
Ce-regulated FeMnOx/ATP Catalysts for Efficient and H2O/SO2-resistant Low-temperature NH3-SCR 高效耐H2O/ so2低温NH3-SCR的ce调节FeMnOx/ATP催化剂
IF 3.5 4区 环境科学与生态学
Water, Air, & Soil Pollution Pub Date : 2026-10-10 DOI: 10.1007/s11270-026-10007-3
Zhifang Zhou, Jiali Song, Lan Li, Fang Dong, Zhicheng Tang
{"title":"Ce-regulated FeMnOx/ATP Catalysts for Efficient and H2O/SO2-resistant Low-temperature NH3-SCR","authors":"Zhifang Zhou,&nbsp;Jiali Song,&nbsp;Lan Li,&nbsp;Fang Dong,&nbsp;Zhicheng Tang","doi":"10.1007/s11270-026-10007-3","DOIUrl":"10.1007/s11270-026-10007-3","url":null,"abstract":"<div><p>Nitrogen oxides (NO<sub>x</sub>) are major atmospheric pollutants, driving the development of low-cost and poisoning-resistant catalysts for efficient low-temperature NH<sub>3</sub>-selective catalytic reduction (NH<sub>3</sub>-SCR). Herein, Ce-modified Ce<sub>y</sub>-FeMnO<sub>x</sub>/ATP catalysts (y = 5, 7.5, 10 and 12.5%) were synthesized using attapulgite as the support. Among them, Ce<sub>10</sub>-FeMnO<sub>x</sub>/ATP exhibited the best performance, achieving over 90% NO conversion at 220–320 °C with activity losses below 15% under H<sub>2</sub>O or SO<sub>2</sub> poisoning. Comprehensive characterizations revealed that appropriate Ce incorporation improved active-phase dispersion, optimized the surface redox environment and acid-strength distribution and promoted NH<sub>3</sub> adsorption and activation. The enhanced NH<sub>3</sub>-SCR performance originated from the synergistic regulation of redox behavior, surface oxygen species, surface acidity and structural characteristics rather than from a single surface property. This work demonstrates an effective strategy for developing efficient and low-cost ATP-supported FeMn-based NH<sub>3</sub>-SCR catalysts.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"237 23","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189343","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}
引用次数: 0
Correction to: Temporal Dynamics, Ecotoxicological Hazard Characterization, and Human Cancer Risk Assessment of Polycyclic Aromatic Hydrocarbons in Crude Oil‑Contaminated Tropical Soils under Biochar Amendment and Bacterial Bioremediation 修正:生物炭修正和细菌生物修复下原油污染热带土壤中多环芳烃的时间动态、生态毒理学特征和人类癌症风险评估
IF 3.5 4区 环境科学与生态学
Water, Air, & Soil Pollution Pub Date : 2026-10-09 DOI: 10.1007/s11270-026-10053-x
Festus Olugbenga Adelana
{"title":"Correction to: Temporal Dynamics, Ecotoxicological Hazard Characterization, and Human Cancer Risk Assessment of Polycyclic Aromatic Hydrocarbons in Crude Oil‑Contaminated Tropical Soils under Biochar Amendment and Bacterial Bioremediation","authors":"Festus Olugbenga Adelana","doi":"10.1007/s11270-026-10053-x","DOIUrl":"10.1007/s11270-026-10053-x","url":null,"abstract":"","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"237 23","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149132562","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}
引用次数: 0
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