Chemosphere最新文献

{"title":"Effects of feeding and aeration strategies on N₂O production and emission by an aerobic granular sludge system for municipal wastewater treatment.","authors":"Bruna S Magnus, Cássio M Schambeck, Jéssica A Xavier, Danúbia Freitas, Lorena B Guimarães, Wanderli Leite, Mario T Kato, Rejane Hr da Costa","doi":"10.1016/j.chemosphere.2024.143899","DOIUrl":"10.1016/j.chemosphere.2024.143899","url":null,"abstract":"<p><p>The effects of a single feeding cycle followed by a continuous aeration phase (AND_C) and a step-feeding cycle followed by intermittent aerobic/idle phases (AND_I) on the production and emission of nitrous oxide (N₂O) from aerobic granular sludge (AGS) from real domestic sewage were studied. Higher N₂O emissions were observed in the AND_I treatment, and 9.2 ± 4.1% of the influent TN was emitted as N₂O, while in the AND_C treatment, 4.6 ± 2.5% of the influent TN was emitted as N₂O. Both strategies were similar for carbon and total phosphorus removal; but AND_I was advantageous for ammonium nitrogen and total nitrogen removal. Regarding the microbial populations associated with N₂O production, genera such as Thauera, a heterotrophic denitrifier, were found to have a relative abundance of 2.1% in AND_C and 3.8% in AND_I. Defluviccocus and Tetrasphaera, organisms capable of denitrification and phosphorus removal, especially the latter, were present in AND_C. Under AND_I conditions, these organisms may have been replaced by fast-growing organisms, such as Thauera. Principal component analysis (PCA) showed that incomplete denitrification was the dominant effect in the AND_C strategy. This may be related to the nitrate and phosphate concentrations and effluent characteristics (low C:N ratio). In the AND_I strategy, incomplete denitrification and low polyhydroxyalkanoate (PHA) consumption were the main effects. This is indicated by the high nitrite and phosphate concentrations. Therefore, according to the PCA results, the combination of the AND_C and AND_I strategies can play a crucial operational role in the dynamics of N₂O production and emission, especially considering that real domestic wastewater was used in the present research.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143899"},"PeriodicalIF":0.0,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142792881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biogenic sulfide by sulfur disproportionation enhances nitrate removal and reduces N₂O production during sulfur autotrophic denitrification.","authors":"Zhikun Lu, Yifeng Xu, Chuanzhou Liang, Wenshan Guo, Huu Hao Ngo, Lai Peng","doi":"10.1016/j.chemosphere.2024.143915","DOIUrl":"10.1016/j.chemosphere.2024.143915","url":null,"abstract":"<p><p>Sulfur autotrophic denitrification (SADN) is regarded as a cost-effective bioremediation technology for nitrate-contaminated water. Nevertheless, the low bioavailability of sulfur is a major challenge that hinders nitrogen removal efficiency. A sulfur autotrophic disproportionation (SADP) process was proposed to convert sulfur to biogenic sulfide, greatly increasing the availability of electron donors. Throughout the 201-day laboratory-scale test, it was observed that the SADP process achieved desirable performance with 198.87 ± 39.8 mg S/L biogenic sulfide production per day, which could provide sufficient electron donors for the SADN process in treatment of 671.22 ± 134.40 mg N/L/d nitrate. Microbial community analysis confirmed the presence and dominancy of sulfur-disproportionating bacteria (SDB) (e.g., Desulfocaspa sp. taking up to 8.27% of the entire microbial community), while Thiobacillus was the most dominant genus of sulfur oxidizing bacteria (SOB), accounting for 87.32% of the entire community. Further experiments revealed that the addition of chemical and biogenic sulfides enhanced the nitrate removal rate of the SADN process by a factor of 1.31 and 1.34, respectively. Additionally, biogenic sulfide was found to be the most effective nitrous oxide (N₂O) mitigator, reducing emission by 82% and 95% in denitrification and denitritation processes, respectively. The results demonstrated that the integrated SADP and SADN processes was a more effective and carbon-neutral alternative in treatment of nitrate-contaminated water.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143915"},"PeriodicalIF":0.0,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142796639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Retraction notice to \"Effects of burning rice straw residue on-field on soil organic carbon pools: Environment-friendly approach from a conventional rice paddy in central Viet Nam\"[Chemosphere 294 (2022) 133596].","authors":"Nguyen-Sy Toan, Do Hong Hanh, Nguyen Thi Dong Phuong, Phan Thi Thuy, Pham Duy Dong, Nguyen Thanh Gia, Le Duc Tam, Tran Thi Ngoc Thu, Do Thi Van Thanh, Kuan Shiong Khoo, Pau Loke Show","doi":"10.1016/j.chemosphere.2024.143823","DOIUrl":"10.1016/j.chemosphere.2024.143823","url":null,"abstract":"","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143823"},"PeriodicalIF":0.0,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142824551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Taloring sawdust derived hydrochar via red mud for cadmium removal: Electron transfer insight and recyclability assessment.","authors":"Ting Cui, Dingxiang Chen, Ran Duan, Fan Yang, Danting Li, Lin Tian, Yong Zhang, Huabin Wang, Rui Xu","doi":"10.1016/j.chemosphere.2024.143924","DOIUrl":"10.1016/j.chemosphere.2024.143924","url":null,"abstract":"<p><p>Iron modified bio-adsorbents gained a lot of attention recently, especially some iron-contain wastes were employed for fabrication. However, the influence of indigenous impurities in wastes was merely investigated. In this study, red mud (RM), an iron-rich by-product was employed as source to prepare Fe modified hydrochar (RM@HC) by a facile hydrothermal method, and then employed for Cd(II) removal from wastewater. The RM@HC demonstrated excellent adsorption performance with capacity of 598.26 mg/g and maintained with a wide pH range. Further, the removal mechanisms were comprehensively elucidated and calculated, which was attributed to the various interactions include physical adsorption (29.07%), reduction (27.61%), and co-precipitation (25.81%). Moreover, the abundant metal oxides in RM@HC contributed to the removal through co-precipitation by building a highly alkaline environment. This work provided a promising choice for the sustainable reutilization of RM by designing a green bio-adsorbent to remove heavy metals from wastewater.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143924"},"PeriodicalIF":0.0,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142804084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring strategies for kitchen waste treatment and remediation from the perspectives of microbial ecology and genomics.","authors":"Zheyu Gu, Lei He, Tao Liu, Meiyan Xing, Leiyu Feng, Guilin Luo","doi":"10.1016/j.chemosphere.2024.143925","DOIUrl":"10.1016/j.chemosphere.2024.143925","url":null,"abstract":"<p><p>Nowadays, the rapid growth of population has led to a substantial increase in kitchen waste and wasted sludge. Kitchen waste is rich in organic matter, including lignocellulose. Synergistic treatment involving kitchen waste and wasted sludge can enhance treatment process. Vermicomposting can facilitate microbial activities on organic matter. Nevertheless, the underlying mechanisms remain unclear. In this study, metagenomics was used to analyze microbial functional genes in vermicomposting. Redundancy analysis found that TOC, TN and DTN adversely affect earthworm growth and reproduction. The relative abundance of Bacteroidetes and Firmicutes increased with earthworms, thereby potentially augmenting lignocellulose degradation. The predominant functional genes included amino acid, carbohydrate, and inorganic ion conversion and metabolism. Metagenomics analysis demonstrated that GH1, GH3, GH5, GH6, GH9, GH12, GH44, GH48 and GH74, GT41, GT4, GT2, and GT51 were dominant. Furthermore, there was higher abundance of carbohydrate-active enzymes in the vermicomposting, particularly during the later phases (30-45 days). Co-occurrence network revealed that Cellvibrio in the vermicomposting exhibited a relatively dense positive correlation with other microbial groups. The findings elucidated the mechanism of vermicomposting as a promising approach for managing kitchen waste and wasted sludge.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143925"},"PeriodicalIF":0.0,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142808722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Retraction notice to \"MXenes based nano-heterojunctions and composites for advanced photocatalytic environmental detoxification and energy conversion: A review\" [Chemosphere 291 (2022) 132923].","authors":"Sunil Kumar Sharma, Amit Kumar, Gaurav Sharma, Dai-Viet N Vo, Alberto García-Peñas, Omid Moradi, Mika Sillanpää","doi":"10.1016/j.chemosphere.2024.143839","DOIUrl":"10.1016/j.chemosphere.2024.143839","url":null,"abstract":"","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143839"},"PeriodicalIF":0.0,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142824581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evidences of the Electrogenic Sulfur Oxidation in Constructed Wetlands.","authors":"Jun Yan, Xuehong Zhang, Wenrui Guo, Shubiao Wu, Yi Chen","doi":"10.1016/j.chemosphere.2024.143951","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.143951","url":null,"abstract":"<p><p>The sulfur redox cycling, mainly involving sulfide oxidation and sulfate reduction, remains a crucial factor that regulates the treatment performance of constructed wetlands (CWs). However, anoxic environments normally prevail in the CW systems, harboring vast reduced sulfur and sulfur minerals, where the occurrence and mechanism of anoxic sulfide oxidation remain unknown. In this study, CW microcosms filled with quartz sand (Qtz) and pyrite (Pyt) were established to investigate the anoxic sulfur oxidation under the bioelectrochemical manipulations. As a result, the δ³⁴S-sulfate increased from 8.75 ± 0.29‰ in the influent to 51.74 ± 16.21‰ (Pyt) and 46.12 ± 25.95‰ (Qtz) at the anoxic zone under the open-circuit condition, and to 34.50 ± 6.99‰ (Pyt) and 42.53 ± 19.59‰ (Qtz) at that under the close-circuit conditions. This suggested the concurrent sulfate reduction and electrogenic sulfide oxidation in the systems. Based on a modified isotopic fractionation model, the electrogenic sulfide oxidation were further calculated (i.e., up to 87.58 and 265.13 mgS·m^-2·d^-1 in Qtz and Pyt, respectively). Results of fluorescence in situ hybridization and metagenomic analyses demonstrated the occurrence of filamentous bacteria belonging to Desulfobulbaceae, with relative abundances of 0.32 ± 0.00% and 0.88 ± 0.25% in the anoxic zones of Qtz and Pyt, respectively. Pyrite was found to upregulate the functional genes encoding microbial transformation of elemental sulfur, sulfide, and thiosulfate. Interspecies network analyses revealed mutual relationships between the filamentous bacteria and microorganisms involved in sulfur, iron, and carbon transformations. Together, this study provided new insights to the electrogenic sulfide oxidation in CWs.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143951"},"PeriodicalIF":0.0,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142831108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced Oxidative Bioleaching for Nickel and Metal Recovery from Arsenic Ores Moves Toward Efficient and Sustainable Extraction.","authors":"Zohreh Boroumand, Hadi Abdollahi, Shabnam Najafi Asli Pashaki, Mirsaleh Mirmohammadi, Yousef Ghorbani","doi":"10.1016/j.chemosphere.2024.143944","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.143944","url":null,"abstract":"<p><p>The research focuses on extracting nickel and other valuable elements through oxidative bioleaching from two distinct arsenic-rich ores of varying grades. This process involved utilizing a mix of mesophilic and moderately thermophilic bacteria in shake flasks with different pulp density levels to bio-leach nickeline. Mesophilic bacteria achieved over 99% nickel dissolution from both low- and high-grade ores within 10 and 28 days, respectively, at pulp densities of 0.5% and 1%. In contrast, abiotic control and chemical tests showed significantly lower nickel dissolution rates (approximately 6.9% and 26.1% for low-grade; 10.3% and 45% for high-grade samples). Moderately thermophilic bacteria achieved complete nickel dissolution from the low-grade ore at a 0.5% pulp density, while dissolution from the high-grade ore reached approximately 63%. In comparison, abiotic controls and chemical achieved only 19% and 39% dissolution for the high-grade ore, and 21.9% and 45% for the low-grade ore, respectively. X-ray diffraction (XRD) analysis confirmed the formation of scorodite as a secondary phase due to arsenic solubilization from primary minerals in the presence of iron. Kinetic modelling revealed that the bioleaching of the low-grade ore was predominantly controlled by a mixed reaction mechanism, whereas chemical factors limited the bioleaching rate of the high-grade ore. This research underscores the efficacy of oxidative bioleaching using mixed bacterial cultures and highlights its potential for efficiently extracting nickel and other valuable metals (cobalt and copper) from arsenic-bearing ores under controlled pulp density conditions.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143944"},"PeriodicalIF":0.0,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142824614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microbial-induced reassembly of phosphate sol: New insight into the removal and fixation of divalent manganese in natural aquatic environment.","authors":"Mingyan Wang, Hui Xu, Cuiyun Zeng, Jia Yang, Feifan He, Hua Zhang, Shuiliang Chen, Feng Zhao","doi":"10.1016/j.chemosphere.2024.143934","DOIUrl":"10.1016/j.chemosphere.2024.143934","url":null,"abstract":"<p><p>The commonly used precipitation method struggles to effectively remove low-concentration heavy metals from water. Herein, we demonstrate that the formation of non-settleable phosphate sols at a low low-concentration is the main reason by using phosphate precipitation as an example and report a new method called microbial-induced reassembly (MIR) of the phosphate sols for the removal and fixation of divalent manganese (Mn(II)) from low-concentration wastewater under neutral conditions. Under the induction of microorganisms, the Mn₃(PO₄)₂ sols formed in low Mn(II) concentration could be reassembled into larger and flower-like precipitates with good settleability, allowing for the removal and fixation of low-concentration Mn(II) through natural settlement. Moreover, MIR is able to reduce Mn(II) levels from 10 mg/L to as low as 0.1 mg/L, achieving nearly 100% removal. The interaction between bacterial protein functional groups and Mn²⁺ ions drives the reassembly of Mn₃(PO₄)₂ sols. MIR of phosphate sol is applicable to both Gram-negative bacteria, such as Escherichia coli, and Gram-positive bacteria, such as Staphylococcus aureus, as well as mixed aerobes. It is also suitable for the removal and fixation of other heavy metals like copper and zinc. This study offers a novel approach for the removal of low-concentration heavy metals from water, more importantly provides a new insight into the migration and fixation of heavy metals in the form of phosphate precipitates induced by microbes in natural aquatic environments.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143934"},"PeriodicalIF":0.0,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142819902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biochar promotes the dissolution of inorganic inactive phosphorus by mediating the bacterial community during corn stover and cattle manure composting.","authors":"Linqin Zhao, Ying Li, Bowen Fan, Mengmeng Wang, Ning Sun, Fengjun Yang","doi":"10.1016/j.chemosphere.2024.143946","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.143946","url":null,"abstract":"<p><p>Phosphorus (P) is a macroelement primarily found in insoluble forms in nature. Enhancing the effectiveness of P is crucial for sustainable agricultural development and ecosystems. The research employed a combination of sequential extraction methods, high-throughput sequencing techniques, microbial culturing, and ecological network analysis of bacterial communities, along with module comparison, to explore the dynamics of different P fractions in calcareous soils. The objective of incorporating biochar into the composting of maize stover and cattle dung was to uncover potential microbial processes that could facilitate the activation of inorganic non-labile P. Findings revealed that during the composting process with biochar, bacterial populations played three distinct roles in the transformation of inorganic non-labile P compounds (such as occluded P and Ca₁₀-P). Primarily, the introduction of biochar significantly increased both the diversity and abundance of bacterial communities. Additionally, it enhanced the ability of phosphate-solubilizing bacteria to maintain the structure of bacterial ecological networks by boosting their complexity, interconnectedness, and stability. Moreover, the incorporation of biochar stimulated the P-related metabolic activities within the bacterial community, significantly enriching key metabolic pathways such as the citrate (TCA) cycle, glycolysis/gluconeogenesis, the pentose phosphate pathway, galactose metabolism, starch, and sucrose metabolism, as well as the metabolism of amino and nucleotide sugars. Moreover, biochar addition intensified the connections between key operational taxonomic units (OTUs) and non-labile P while simultaneously increasing the total organic carbon concentration and enhancing alkaline phosphatase activity. This study provides valuable insights for enhancing P effectiveness in calcareous soils.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143946"},"PeriodicalIF":0.0,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142824882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}