Clean-soil Air Water最新文献

{"title":"Bioaugmentation-Driven Bioremediation: Microbial Community Dynamics and Hydrocarbon Degradation Efficiency in Marine Sediments","authors":"Xiaoyu Zhou,&nbsp;Yanhui Shi,&nbsp;Hanzhi Cao,&nbsp;Qing Jiang,&nbsp;Yang Liu,&nbsp;Xinyue Tang,&nbsp;Yana Zhang,&nbsp;Ziang Liu,&nbsp;Hao Wang","doi":"10.1002/clen.70261","DOIUrl":"https://doi.org/10.1002/clen.70261","url":null,"abstract":"<div>\u0000 \u0000 <p>Bioaugmentation is effective for remediating petroleum-contaminated seawater, but its application in marine sediments remains underexplored. This study investigated the enhancing effects and mechanisms of bioaugmentation on total petroleum hydrocarbons (TPHs) degradation in marine sediments over 60 days. The bioaugmentation (B) group achieved a TPH degradation rate 1.89 times higher than the natural restoration (N) group. GC-MS analysis revealed significantly lower residual C₁₃–C₂₂ hydrocarbon concentrations in Group B. Excitation–emission matrix spectroscopy showed elevated soluble microbial by-products and tyrosine-like substances in Group B, whereas tryptophan-like substances accumulated in Group N. Despite an initial decline following inoculation, microbial diversity indices (Chao1 and Shannon) in Group B increased progressively over time, eventually exceeding those of Group N by Day 60, indicating dynamic community restructuring. <i>Bacillus</i> dominated the initial stage of bioaugmentation, while <i>Sporolactobacillus</i> became dominant after 60 days, both of which were reported as potential petroleum degraders. Metagenomic analysis indicated that key genes involved in petroleum hydrocarbon degradation were substantially enriched in Group B throughout the remediation period, reflecting enhanced genetic potential. Molecular docking simulations suggested that alkylsuccinate synthase (assA) enzymes in petroleum-degrading bacteria might facilitate hydrocarbon binding through hydrogen bonds and hydrophobic interactions, which could potentially contribute to enhanced degradation. These in silico findings provided predictive structural insights into potential degradation mechanisms and required experimental validation. This study contributed to elucidating the degradation efficacy and potential mechanistic enhancements of bioaugmentation, highlighting its viability for the bioremediation of TPHs-contaminated marine sediments.</p>\u0000 </div>","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"54 8","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783819","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":"Evaluation of Air Pollution Tolerance Index (APTI) and Anticipated Performance Index (API) of Underutilized Minor Fruit Plants of Northeast India for Sustainable Urban Green Space","authors":"Bhargov Mudhukailya,&nbsp;Raihan Ahmed,&nbsp;Farishta Yasmin","doi":"10.1002/clen.70259","DOIUrl":"https://doi.org/10.1002/clen.70259","url":null,"abstract":"<div>\u0000 \u0000 <p>The present study evaluates the ability of selected plant species to tolerate air pollution and their potential contribution to sustainable urban green space development by integrating the air pollution tolerance index (APTI) with the anticipated performance index (API). Ten underutilized minor fruit plant species were investigated at polluted and control sites during the pre- and post-monsoon seasons in the Nagaon district, Assam, Northeast India. Four critical leaf biochemical variables, namely, ascorbic acid content, total chlorophyll content, relative water content, and leaf extract pH, were measured to determine APTI. Two-way ANOVA and correlation analyses showed statistically significant variation in APTI values, with a positive correlation between ascorbic acid content and APTI, indicated by a high Pearson correlation coefficient (<i>R</i>² = 0.9581). The highest APTI value was observed in <i>Baccaurea sapida</i> (Roxb.) Müll.Arg. (14.42 ± 0.29), whereas the lowest was recorded in <i>Terminalia chebula</i> Retz. (12.38 ± 0.35). Moreover, the API was assessed by integrating APTI values with relevant socioeconomic and biological characteristics, thereby identifying <i>Citrus maxima</i> (Burm.) Merr. (grade = 5, score = 75%) as a very good species that is highly suitable for plantation in green spaces and urban ecosystem development initiatives. Hence, this study highlights the potential of these plant species to combat air pollution while enhancing aesthetic value and providing socioeconomic and nutritional benefits.</p>\u0000 </div>","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"54 8","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783951","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":"State of the Practice Worldwide: Identification of Radiogenic Element Sources and Evaluation of Water Quality in Tuban Delta, Yemen","authors":"Emran Eisa Saleh,&nbsp;Dua'a Anis Taya,&nbsp;Wedad Ali Abdurabu,&nbsp;Hattan Natto","doi":"10.1002/clen.70206","DOIUrl":"https://doi.org/10.1002/clen.70206","url":null,"abstract":"<div>\u0000 \u0000 <p>This study presents an accurate assessment of natural radioactivity levels of ²²⁶Ra, ²³²Th, and ⁴⁰K in 49 groundwater samples collected from the Tuban Delta in Yemen. Gamma ray spectroscopy was employed to quantify the radioactivity concentrations in the analyzed samples. In addition to radionuclide assessment, heavy metal concentrations were also measured. The results revealed average activity concentrations ranging from 0.83 to 6.5 Bq/L for ²²⁶Ra, 1.2 to 3.7 Bq/L for ²³²Th, and 110 to 172.3 Bq/L for ⁴⁰K. To evaluate potential health risks, effective doses were calculated based on measured radionuclide concentrations and typical water consumption patterns, yielding ranges of 0.3–1.29 mSv/year for infants, 0.04–2.20 mSv/year for children, and 0.02–1.34 mSv/year for adults. Pearson's correlation analysis revealed strong positive relationships among major ions (Ca²⁺, Mg²⁺, Na⁺) and natural radionuclides (²²⁶Ra, ²³²Th), indicating geogenic influences on groundwater chemistry. Principal Component Analysis identified two main components explaining 83.7% of the variability, highlighting mineral dissolution and geochemical processes as key factors controlling water quality and radionuclide distribution in the Tuban Delta.</p>\u0000 </div>","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"54 8","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753467","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":"Glycine Betaine as a Reliable Strategy to Improve Drought Tolerance in Trachyspermum ammi","authors":"Afifa Kamal,&nbsp;Muhammad Shahbaz,&nbsp;Noreen Zahra,&nbsp;Nazoora Mujahid,&nbsp;Abida Kausar,&nbsp;Fahd Rasul,&nbsp;Muhammad Kamran,&nbsp;Saima Iqbal,&nbsp;Azamal Husen","doi":"10.1002/clen.70253","DOIUrl":"https://doi.org/10.1002/clen.70253","url":null,"abstract":"<div>\u0000 \u0000 <p>Drought is a major abiotic stress that limits crop growth and productivity by inducing physiological and biochemical changes. <i>Trachyspermum ammi</i> L. is cultivated in arid and semi-arid regions and is susceptible to drought stress. Osmoregulators like glycine betaine (GB) are known to enhance plant tolerance by regulating internal metabolic processes. This study aimed to evaluate the impact of GB foliar application on the physiological and morphological attributes of <i>T. ammi</i> under drought conditions. A pot experiment was conducted with three treatments: water spray (control), 5 mM GB, and 10 mM GB, whereas drought stress was maintained at 60% field capacity. Drought stress significantly decreased growth-related attributes. Further, it has been noticed that the drought stress significantly increased the activities of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX) in <i>T. ammi</i>. Application of GB at 10 mM significantly increased POD (41.2%) and CAT (312.3%) activities, whereas 5 mM GB led to the highest increase in ascorbate POD (100%) under drought stress. Foliar application of GB also mitigated the adverse effects, improving growth-related attributes, photosynthetic pigments, and ions uptake and decreasing malondialdehyde (MDA) and H₂O₂. Among treatments, 10 mM GB exhibited greater efficiency under drought, whereas 5 mM GB was more beneficial under control conditions. Taken together, the findings suggest that GB could serve as a potential drought-mitigating agent for <i>T. ammi</i> cultivation.</p>\u0000 </div>","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"54 8","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753731","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":"Spatiotemporal Distribution Characteristics and Influencing Factors of Nitrogen and Phosphorus Concentrations in the Taihu Basin","authors":"Zhipeng Xu,&nbsp;Jinhui Wang,&nbsp;Songao Min,&nbsp;Jiang Min,&nbsp;Lei Xie,&nbsp;Haozhen Zhang,&nbsp;Qidi Liu","doi":"10.1002/clen.70260","DOIUrl":"https://doi.org/10.1002/clen.70260","url":null,"abstract":"<div>\u0000 \u0000 <p>Nitrogen and phosphorus are key drivers of the lake eutrophication, whose spatiotemporal distribution characteristics and influencing factors are critical to the management of the aquatic environment. Taihu Basin constitutes a focal area within the Yangtze River Economic Belt, and its eutrophication control holds significant guiding implications for China. In this study, we accurately identified the distribution patterns of total nitrogen (TN) and total phosphorus (TP) in time scales and spatial differences by analyzing monthly monitoring data from 80 surface water sections in the Taihu Basin from June 2021 to March 2024. Lindeman–Merenda–Gold model and Pearson's correlation analysis revealed the correlation and relative contribution of the environmental factors to TN and TP and the decisive factors of TN and TP, respectively. The results showed that from 2021 to 2023, TN and TP concentrations in the Taihu Basin during summer exhibited an initial decline followed by an upward trend. In winter, TN showed an initial increase followed by a decrease, whereas TP demonstrated a declining trend. Spatially, TN and TP concentrations peaked in Zhejiang and Shanghai, respectively, whereas both were lowest in Jiangsu. Six environmental factors were associated with TN and TP. TN had the highest association with ammonia nitrogen (NH₃-N) (0.388), and TP had the highest correlation with permanganate index (COD_Mn) (0.485). Dissolved oxygen (DO), pH, and NH₃-N were the dominant driving factors for the seasonal variation of TN, whereas COD_Mn, DO, and NH₃-N significantly affected the seasonal variation of TP. These findings provide a scientific basis and valuable insights for targeted water environment management in the Taihu Basin.</p>\u0000 </div>","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"54 8","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753730","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":"Modulation of ERs/Nrf2–Keap1 Signaling Pathway by Ethinylestradiol in Juvenile Common Carp (Cyprinus carpio): Implications for Oxidative Stress and Estrogenic Effects","authors":"Abouzar Fathi,&nbsp;Amir Parviz Salati,&nbsp;Rashid Alijani Ardeshir,&nbsp;Fatemeh Salabi,&nbsp;Geoff R. MacFarlane","doi":"10.1002/clen.70255","DOIUrl":"https://doi.org/10.1002/clen.70255","url":null,"abstract":"<div>\u0000 \u0000 <p>This study investigates the acute effects of ethinylestradiol (EE2) on oxidative stress markers and key genes involved in the estrogen receptors (ERs)/Nrf2–Keap1 signaling pathway, which is crucial for managing oxidative stress. Juvenile common carp were exposed to nominal EE2 concentrations of 10, 50, and 100 ng/L for 7 days. Liver tissue was harvested for biochemical analyses, including assays for enzymatic antioxidant activities, including superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione reductase (GR), concentrations of glutathione (GSH) and its oxidized form (GSSG), malondialdehyde (MDA) as an index of lipid peroxidation, and gene expression analysis of <i>ERα</i>, <i>Vtg</i>, <i>Keap1</i>, <i>Nrf2</i>, and <i>HO-1</i>. The study found that EE2 exposure at higher concentrations (50 and 100 ng/L) significantly reduced the activity of key antioxidant enzymes in the liver of juvenile carp, indicating a compromised antioxidant defense system. This reduction was accompanied by increased oxidative stress, as showed by increased MDA values. Additionally, the expression of <i>Vtg</i>, <i>Keap1</i>, and <i>ERα</i> genes significantly increased in response to EE2 exposure, whereas dose-dependent decreases in the expression of Nrf2 and HO-1 genes were observed. The findings provide evidence that EE2 induces significant oxidative stress in the liver of juvenile common carp, disrupting key antioxidant defense mechanisms and altering gene expression in the ERs/Nrf2–Keap1 pathway. These findings underscore the potential risks posed by EE2 and similar endocrine-disrupting compounds (EDCs) to aquatic organisms.</p>\u0000 </div>","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"54 8","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752786","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":"Adsorptive Removal of Oxytetracycline From Aqueous Solutions Using KOH-Activated Biochar Derived From Grape-Leaf Waste: Adsorption Properties and Mechanism","authors":"Di Liu,&nbsp;Yanrong Cai,&nbsp;Xuechun Yu,&nbsp;Xinping Yang,&nbsp;Qiong Wang","doi":"10.1002/clen.70251","DOIUrl":"https://doi.org/10.1002/clen.70251","url":null,"abstract":"<div>\u0000 \u0000 <p>Oxytetracycline (OTC) was a kind of spectral antibacterial agent and widely used in livestock farming and disease prevention. It easily remained in the environment and was harmful to the health of humans and animals. Grape leaves, the waste of the grape production base in Beizhen, were used as raw materials to produce the biochar. The effects of adsorption time, temperature, adsorbent amount, pH, and OTC initial concentration on OTC adsorption capacity were investigated. The Box-Behnken method was used to optimize the experimental design. The grape-leaf biochar was modified with KOH for the efficient adsorptive removal of OTC in the wastewater. Compared with the unmodified biochar, the modified biochar can quickly adsorb low concentrations of OTC and has a better adsorption effect. The adsorption capacity of GLBC-2OH (modified biochar) was calculated by the Langmuir isotherm as 116.96 mg/g. The OTC removal rate can reach over 85%. The adsorption mechanism of GLBC-2OH for the OTC consisted of pore filling, π-π interaction, electrostatic interaction, hydrogen bonding, and the complexation between the OTC and the biochar. The GLBC-2OH adsorption was more suitable for pseudo-second-order kinetics and the Langmuir isotherm model, which was the chemisorption of monolayer adsorption. The analysis of thermodynamics showed that adsorption was a spontaneous, endothermic, and entropy-increasing reaction. The grape leaves were waste, and the biochar made from them was an effective adsorbent material for the removal of OTC in wastewater. Reuse of grape waste can increase income and protect the environment.</p>\u0000 </div>","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"54 8","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752812","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":"Exploring the Potential of Duckweed and Water Lettuce as a Versatile Source for Phytoremediation—A Comprehensive Review","authors":"Tejaswi Guttula,&nbsp;Omar Bashir,&nbsp;Zincia Sherin,&nbsp;Imdad Ul Hoque Mondal,&nbsp;Prashant Anil Pawase,&nbsp;Tawheed Amin","doi":"10.1002/clen.70244","DOIUrl":"https://doi.org/10.1002/clen.70244","url":null,"abstract":"<div>\u0000 \u0000 <p>Phytoremediation, an eco-friendly and cost-effective wastewater treatment method, applies the natural ability of plants to eliminate, convert or stabilize pollutants. This review was conducted using a structured literature approach based on PRISMA-inspired guidelines to ensure transparency in study selection and synthesis. Despite the fact that the phytoremediation potential of aquatic macrophytes have been reported in a number of studies, a majority of the reviews have concentrated on individual species or even individual pollutant with little comparative and mechanistic analysis. To fill this gap, this review presents a comprehensive analysis of duckweed (<i>Lemna minor</i>) and water lettuce (<i>Pistia stratiotes</i>) as multipurpose phytoremediation for the removal of heavy metals, organic pollutants, and excess nutrients. The most important phytoremediation processes include rhizofiltration, phytoextraction, rhizodegradation, phytotransformation, phytovolatilization, phytostabilization, and their physiological and biochemical mechanisms. In contrast to previous reviews, the given work synthesizes the recent research on the interaction between plants and microbes, the nutrient assimilation mechanisms, and the emerging hybrid remediation strategies along with the comparison of the performance of the two plants under various conditions of wastewater. Large-scale issues concerning biomass management, scalability, and site-specific efficiency are examined, and possible solutions to the existing challenges to facilitate effective implementation are discussed. Altogether, duckweed and water lettuce are promising and sustainable resources of wastewater purification and possess strong potential for integration into circular bioeconomy systems and future environmental management approaches.</p>\u0000 </div>","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"54 8","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752785","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":"Indigenous Bacteria Synergistically Degrade Indigo Dye in Textile Wastewater via Enzymes and EPS","authors":"Asma Boulehsa,&nbsp;Nadjla Chaib,&nbsp;Zine Eddine Boudjellab,&nbsp;Sidi Mohammed El Amine Abi-Ayad,&nbsp;Dalel Daâssi,&nbsp;Mohamed Ali Masmoudi,&nbsp;Mohamed Chamkha","doi":"10.1002/clen.70256","DOIUrl":"https://doi.org/10.1002/clen.70256","url":null,"abstract":"<div>\u0000 \u0000 <p>Textile dye effluents pose a significant environmental concern due to their persistence, toxicity, and limited amenability to conventional treatment processes. Among these, indigo dye, widely used in denim manufacturing, is particularly resistant to degradation and contributes substantially to aquatic pollution. In this study, indigenous bacterial strains isolated from industrial effluents and contaminated soils were identified as <i>Pseudomonas aeruginosa</i>, <i>Bacillus thuringiensis</i>, and <i>Bacillus cereus</i> on the basis of 16S rRNA gene sequencing. Physicochemical analysis of the textile wastewater revealed pronounced alkalinity, high salinity, and a substantial organic load. Under optimized conditions, individual strains achieved up to 97% decolorization within 24 h, whereas the constructed consortium reached 99%, indicating a clear synergistic effect. Spectroscopic analyses (UV–Vis and FTIR), together with liquid chromatography (LC)–mass spectrometry (MS), confirmed the transformation of indigo into more polar metabolites, supporting biodegradation rather than simple adsorption. Mechanistically, dye removal appears to involve a coupled process of enzymatic oxidation (laccase and protease activity) and extracellular polymeric substances (EPS)-mediated bioflocculation. The EPS matrix, dominated by proteins (P/C ≈ 1.98), likely enhanced pollutant capture and improved substrate accessibility, thereby increasing degradation efficiency. Importantly, validation in a 5 L fluidized bed bioreactor using real textile effluent demonstrated the robustness and scalability of the system. Overall, these findings underscore the promise of indigenous microbial consortia as effective, low-cost, and environmentally sustainable solutions for textile wastewater treatment.</p>\u0000 </div>","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"54 8","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752580","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":"A Comprehensive Study on Bioremediation of Electronic Waste in Developing Nations: A Pathway for Circular Economy and Sustainable Development","authors":"Tejaswini M. S. S. R.,&nbsp;Jannatun Zia","doi":"10.1002/clen.70249","DOIUrl":"https://doi.org/10.1002/clen.70249","url":null,"abstract":"<div>\u0000 \u0000 <p>The sustainable management of electronic waste in developing nations is becoming global concern. Electronic waste is often characterized as the waste discarded from electronic and electric devices that mainly arises from mobile phones, laptops, smartwatches, batteries, circuit boards, television sets, fluorescent lamps, and audio systems and is becoming the most rapidly growing waste stream in the world owing to fast technological progress and growth in consumers’ demands. This is mainly occurring due to involvement of informal recycling activities, lack of consumer awareness, lack of cost-effective technologies, and insufficient waste management infrastructure that leads to unscientific methods of disposing waste such as open burning, uncontrolled dumping that result in massive environmental pollution and threaten human health through heavy metals and persistent toxic substances. Keeping in view, bioremediation technology has recently been considered a viable and eco-friendly alternative approach for resource recovery and hazardous substances removal from discarded electronic wastes. Accordingly, the present review summarizes critically and comprehensively recent advances on microbial-mediated electronic waste bioremediation, which is affected by the presence of microbial strains, bioleaching mechanisms, degradation pathways, and resource recovery efficiencies as well as integrated physical–chemical–biological treatment processes. Furthermore, the current paper has also identified the knowledge gaps, processing constraints, scaling-up challenges, and practical issues for an industrial application. Moreover, it also discusses the essential techno-economic parameters that influence practicability of bioleaching, including recovery efficiency, operation cost, reactor optimum operation, and integration of the process. Furthermore, a sustainable electronic waste management framework is proposed for developing countries with the concept of circular economy, integration of formal and informal recycling sectors, policy-oriented public involvement, and effective resource recovery.</p>\u0000 </div>","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"54 8","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752600","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}