Journal of Central South University最新文献_第10页

Contaminant transport modelling of heavy metal pollutants in soil and groundwater: An example at a non-ferrous smelter site 土壤和地下水中重金属污染物迁移模型：以有色金属冶炼厂为例

IF 4.4 2区材料科学

Journal of Central South University Pub Date : 2024-06-13 DOI: 10.1007/s11771-024-5639-y

Hai-li Zhang, Peng Zhao, Wen-yan Gao, Bao-hua Xiao, Xue-feng Yang, Lei Song, Xiang Feng, Lin Guo, Yong-ping Lu, Hai-feng Li, Jing Sun

{"title":"Contaminant transport modelling of heavy metal pollutants in soil and groundwater: An example at a non-ferrous smelter site","authors":"Hai-li Zhang, Peng Zhao, Wen-yan Gao, Bao-hua Xiao, Xue-feng Yang, Lei Song, Xiang Feng, Lin Guo, Yong-ping Lu, Hai-feng Li, Jing Sun","doi":"10.1007/s11771-024-5639-y","DOIUrl":"https://doi.org/10.1007/s11771-024-5639-y","url":null,"abstract":"The topsoil of smelter sites is subjected to severe contamination by heavy metals (HMs). Existing numerical simulations typically treat soil and groundwater separately owing to data limitations and computational constraints, which does not reflect the actual situation. Herein, a three-dimensional coupled soil-groundwater reactive solute transport numerical model was developed using the Galerkin finite element method with the smelter as the research object. This model treats soil and groundwater as a whole system, providing a quantitative characterization of HMs migration patterns in soil and groundwater. The model used the reaction coefficient (λ) and retention coefficient (R) to describe the release and adsorption capacities of HMs. Results from the model were consistent with actual pollution distributions in the field, indicating the efficacy of the soil-groundwater remediation technology for severe soil and localized groundwater pollution. The constructed three-dimensional coupled soil-groundwater reactive solute transport model can describe and predict the distribution and transport diffusion behavior of HMs at the study site with good efficacy. The model was also used to simulate and predict the effects of remediation technologies during the treatment of smelting site contamination, providing guidance for optimizing the treatment plan.","PeriodicalId":15231,"journal":{"name":"Journal of Central South University","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141509935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Soil microbial community in lead smelting area and the role of sulfur-oxidizing bacteria 铅冶炼区的土壤微生物群落及硫氧化细菌的作用

IF 4.4 2区材料科学

Journal of Central South University Pub Date : 2024-06-13 DOI: 10.1007/s11771-024-5601-z

Chuan Wu, Hong-ren Chen, Yong-ping Lu, Yan-ting Qi, Hai-feng Li, Xing-hua Luo, Yue-ru Chen, Wei Lou, Wei-chun Yang, Wai-chin Li

{"title":"Soil microbial community in lead smelting area and the role of sulfur-oxidizing bacteria","authors":"Chuan Wu, Hong-ren Chen, Yong-ping Lu, Yan-ting Qi, Hai-feng Li, Xing-hua Luo, Yue-ru Chen, Wei Lou, Wei-chun Yang, Wai-chin Li","doi":"10.1007/s11771-024-5601-z","DOIUrl":"https://doi.org/10.1007/s11771-024-5601-z","url":null,"abstract":"The long-term operation of the lead smelter has brought serious heavy metal pollution to the surrounding soil. The microbial community structure and composition of heavy metal contaminated soil is important for the risk assessment and pollution remediation. In this study, a lead smelter operating for more than 60 years was used to investigate the effects of heavy metal pollution on soil microbial community structure and composition in vertical profile. The results showed that the heavy metal content decreases gradually with increasing vertical depth of the soil. The diversity of soil microbial community with moderate pollution was higher than that with low pollution. Regardless of the pollution level, the diversity of soil microbial community was higher in the surface layer than in the bottom layer. The dominant relative abundance genera include Perlucidibaca, Limnobacter, Delftia, Hydrogenophaga, Thiobacillus, Sulfurifustis and Sphingopyxis, showing a higher abundance of sulfur-oxidizing bacteria (SOB). XRD results showed the presence of PbSO4 in soil, may be due to the enrichment of SOB for the oxidation of sulfur. This sulfur cycle characteristic may be potential for the stabilization and remediation of lead (Pb) into PbSO4.","PeriodicalId":15231,"journal":{"name":"Journal of Central South University","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141509931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Heavy metal(loid)s transformation in dust at a lead smelting site 铅冶炼厂粉尘中重金属的变化

IF 4.4 2区材料科学

Journal of Central South University Pub Date : 2024-06-13 DOI: 10.1007/s11771-024-5600-0

Wen-yan Gao, Kai-kai Wu, Ting Chen, Wai-chin Li, Hong-ren Chen, Yue-ru Chen, Hao Wu, Feng Zhu, Hai-dong Li, Chuan Wu, Sheng-guo Xue

{"title":"Heavy metal(loid)s transformation in dust at a lead smelting site","authors":"Wen-yan Gao, Kai-kai Wu, Ting Chen, Wai-chin Li, Hong-ren Chen, Yue-ru Chen, Hao Wu, Feng Zhu, Hai-dong Li, Chuan Wu, Sheng-guo Xue","doi":"10.1007/s11771-024-5600-0","DOIUrl":"https://doi.org/10.1007/s11771-024-5600-0","url":null,"abstract":"Emitted dust is the major contributor of heavy metal(loid)s in soils located near lead (Pb) smelters, but the mechanisms for transfer of the heavy metal(loid)s in dust are uncertain. The study systematically investigated the geochemical behaviors and liberation mechanisms of heavy metal(loid)s in this process. The results show that Pb, Zn, Cd, and As in two types of dust samples exceeded the allowable standards, and about 80% of Pb and Zn were present in mobile and bioavailable fractions. More than 70% of arsenic in bottom-blowing furnace dust existed in an acid-soluble fraction, while 60% of cadmium in reducing and fuming dust existed in the acid-soluble fraction. Pb isotope results showed that 97.12% of the Pb in the topsoil came from dust emitted during the smelting process. XRD and MLA results illustrated that PbSO4, ZnSO4, and CdSO4 were the major minerals in the dust, while the mineral phases of the topsoil were mainly quartz, calcite, dolomite, and muscovite. Based on a combination of mineralogical investigations and geochemical modelling, our findings suggest that liberation of the Pb, Zn, and Cd was primarily dependent on sulfate minerals under acidic conditions, whereas the liberation of As was related to adsorption by iron hydroxide.","PeriodicalId":15231,"journal":{"name":"Journal of Central South University","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141509932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surfactant-modified SiO2/FeS nanocomposites for remediation of cadmium pollution 用于镉污染修复的表面活性剂改性 SiO2/FeS 纳米复合材料

IF 4.4 2区材料科学

Journal of Central South University Pub Date : 2024-06-13 DOI: 10.1007/s11771-024-5605-8

Hong-yu Liu, Hua-gang Lyu, Wen Zhang, Jun Jiang, Xiao-hong Li, Sheng-guo Xue

{"title":"Surfactant-modified SiO2/FeS nanocomposites for remediation of cadmium pollution","authors":"Hong-yu Liu, Hua-gang Lyu, Wen Zhang, Jun Jiang, Xiao-hong Li, Sheng-guo Xue","doi":"10.1007/s11771-024-5605-8","DOIUrl":"https://doi.org/10.1007/s11771-024-5605-8","url":null,"abstract":"To improve the remediation and antioxygenic properties of ferrous sulfide (FeS) nanomaterials toward heavy metals is the focus of current research. This study employed a combination of sodium carboxymethylcellulose (CMC) and sodium dodecyl benzene sulfonate (SDBS) for the modification of FeS nanomaterials supported by porous silicon (SiO2/FeS) to serves as an efficient amendment for cadmium pollution. The optimized slurry with the mass ratio of CMC/SDBS to be 1:3 showed enhanced dispersion and antioxidant effects on SiO2/FeS (the mass ratio of surfactant to FeS was 1:1). This formulation exhibited the smallest particle size (D50 = 0.66 µm) and the highest absolute Zeta potential values exceeding 30 mV. Also, the obtained products demonstrated effective remediation of cadmium-contaminated solutions, with Cd(II) primarily forming stable CdS and CdSO4 products through ion exchange and chemical precipitation. The adsorption capacity of SiO2/FeS-CMC/SDBS 1:3 for cadmium in air and nitrogen was remained during 30 d, reaching about 158 mg/g. Notably, under low concentration Cd contamination, the adsorption capacity of SiO2/FeS-CMC/SDBS 1:3 exceeded that of SiO2/FeS-CMC and SiO2/FeS-SDBS without acidification risk. In summary, this research highlights the improved remediation and antioxygenic properties achieved through CMC and SDBS co-modification of SiO2/FeS, providing a new amendment for Cd remediation.","PeriodicalId":15231,"journal":{"name":"Journal of Central South University","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141509940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cooperative effect of citric acid and pyrite on the slow-release of silicon from coal gangue and the stabilization of arsenic: Implications for soil remediation 柠檬酸和黄铁矿对煤矸石中硅的缓释和砷的稳定的协同效应：对土壤修复的影响

IF 4.4 2区材料科学

Journal of Central South University Pub Date : 2024-06-13 DOI: 10.1007/s11771-024-5633-4

Xin Lyu, Sheng-yuan Feng, Hong-zhi Zhan, Jian-lan Lei, Zi-gang Shu, Pei-wen Zhou, Xi-lin Chai

{"title":"Cooperative effect of citric acid and pyrite on the slow-release of silicon from coal gangue and the stabilization of arsenic: Implications for soil remediation","authors":"Xin Lyu, Sheng-yuan Feng, Hong-zhi Zhan, Jian-lan Lei, Zi-gang Shu, Pei-wen Zhou, Xi-lin Chai","doi":"10.1007/s11771-024-5633-4","DOIUrl":"https://doi.org/10.1007/s11771-024-5633-4","url":null,"abstract":"The application of coal gangue as a soil amendment shows promise in increasing silicon availability, potentially serving as a silicon fertilizer in agriculture. However, the rapid release of silicon from coal gangue compared to the slow absorption by plants hinders its effective use. This study explored the formation of iron-containing secondary minerals on coal gangue surfaces using pyrite and citric acid to stabilize arsenic in contaminated soils and slow down silicon leaching. After co-ball milling, the silicon leaching rates for coal gangue and the composite C@PC-10 were 0.44% and 0.22% at 60 min, and 1.11% and 1.38% at 120 min, respectively. Stabilization tests showed that C@PC-10 achieved removal efficiencies of 71.3% for water-extractable arsenic and 55.9% for NaHCO3-extractable arsenic over 30 d. Acid-soluble arsenic decreased from 32.8% to 24.1%, while residual arsenic increased from 26.5% to 36.9%. Acid rain simulations demonstrated that C@PC-10 limited leachate arsenic concentration to 28.9 mg/L over 120 d, compared to untreated soil with 59.8 mg/L. Analytical techniques like XRD, XPS, and FT-IR confirmed that pyrite oxidation during ball milling led to the formation of jarosite and FeOOH, enhancing arsenic adsorption capacity. Overall, the C@PC-10 composite shows promise as a remediation material for controlled silicate release and arsenic mitigation in soil environments.","PeriodicalId":15231,"journal":{"name":"Journal of Central South University","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adsorption performance and mechanistic study of Pb, Cd and As by CaAl-LDH in wastewater CaAl-LDH 对废水中铅、镉和砷的吸附性能及机理研究

IF 4.4 2区材料科学

Journal of Central South University Pub Date : 2024-06-13 DOI: 10.1007/s11771-024-5627-2

Jin-feng Hou, Qian Sun, Xiu-zhen Hao

引用次数: 0

A hypoxic pyrolysis process to turn petrochemical sludge into magnetic biochar for cadmium-polluted soil remediation 将石化污泥转化为磁性生物炭用于镉污染土壤修复的缺氧热解工艺

IF 4.4 2区材料科学

Journal of Central South University Pub Date : 2024-06-13 DOI: 10.1007/s11771-024-5632-5

Yu-jun Wu, Li-ping Liu, Feng Li, Yi-xin Tang, Fei Ge, Jiang Tian, Ming Zhang

{"title":"A hypoxic pyrolysis process to turn petrochemical sludge into magnetic biochar for cadmium-polluted soil remediation","authors":"Yu-jun Wu, Li-ping Liu, Feng Li, Yi-xin Tang, Fei Ge, Jiang Tian, Ming Zhang","doi":"10.1007/s11771-024-5632-5","DOIUrl":"https://doi.org/10.1007/s11771-024-5632-5","url":null,"abstract":"Biochar has been considered as a promising material for soil remediation, particularly for its ability to reduce the bioavailability of cadmium (Cd) in soil through sorption. However, long-term remediation may cause Cd to be released from a fixed state, making the recovery of biochar as an adsorbent for Cd removal an area of increasing interest. The study aims to synthesize biochar with magnetic properties using petroleum sludge containing iron in one-step, and investigate their adsorption efficiency and passivation mechanism for Cd in liquid-solid phase, as well as ecological risks. The results indicate that the petrochemical sludge waste can be directly resourced into magnetic biochar (PSMBCs) using hypoxic pyrolysis, and that it exhibits good recycling performance in water/soil. Specifically, the obtained biochar showed strong sorption capacity for Cd (18.4 to 29.8 mg/g) due to surface mineralization and cation-π coordination, which played a critical role. After applying 1.5% of PSMBCs for 30 d in paddy soil, the bioavailable content of Cd was decreased by 85.0%. Importantly, the biochar leachates did not have any toxic effects on wheat root elongation. Therefore, this study presents a promising strategy for the benign disposal of petrochemical sludge and their utilization for the remediation of Cd-contaminated soil.","PeriodicalId":15231,"journal":{"name":"Journal of Central South University","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chromium stabilization by polysulfide supported nZVI@biochar in contaminated soil: Cr bioavailability and stabilization mechanism 多硫化物支撑的 nZVI@ 生物炭在受污染土壤中稳定铬：铬的生物利用率和稳定机制

IF 4.4 2区材料科学

Journal of Central South University Pub Date : 2024-06-13 DOI: 10.1007/s11771-024-5599-2

Jin-song Chen, Xin Wang, Xin-yao Yan, Xiao-ke Wang, Hui Ma, Sheng-yan Pu

引用次数: 0

Enhancing cadmium biosorption capacity in E. coli through heterologous expression of metal-chelating proteins: Insights into bioremediation potential and mechanisms 通过异源表达金属螯合蛋白提高大肠杆菌对镉的生物吸附能力：对生物修复潜力和机制的启示

IF 4.4 2区材料科学

Journal of Central South University Pub Date : 2024-06-13 DOI: 10.1007/s11771-024-5625-4

Chen Wu, Yu-jun Wu, Sheng-wei Yi, Feng Li

{"title":"Enhancing cadmium biosorption capacity in E. coli through heterologous expression of metal-chelating proteins: Insights into bioremediation potential and mechanisms","authors":"Chen Wu, Yu-jun Wu, Sheng-wei Yi, Feng Li","doi":"10.1007/s11771-024-5625-4","DOIUrl":"https://doi.org/10.1007/s11771-024-5625-4","url":null,"abstract":"Cadmium (Cd) is a biologically non-essential and toxic heavy metal that enters the environment through natural emissions or anthropogenic activities, posing threats to human health. The efficient expression of metal-chelating proteins (MCP) in microorganisms can enhance microbial remediation of Cd. In this study, a heterologous expression system (GEM01) of MCP encoded by the mcp gene in E. coli was constructed, and the adsorption effect and potential mechanism on Cd were explored. The results indicated that Cd2+ significantly enhanced the abundance of mcp gene in GEM01, thus increasing the Cd2+ biosorption capacity (8.09 mg/g, 2.32 times higher than the control). The retention of Cd2+ during the autolysis of GEM01 was 87.87%. Fluorescence spectroscopy and molecular dynamics simulations demonstrated that there was a strong interaction between Cd2+ and MCP. FT-IR demonstrated that some functional groups (e.g., carboxyl group and methyl group) in MCP were involved in the interaction between MCP and Cd2+. Molecular docking further demonstrated that polar and hydrophilic residues (e.g., aspartic acid, glutamic acid, serine, and histidine) on the surface of MCP bound to Cd2+ via electrostatic attraction. These findings offer new insights into Cd2+ bioremediation by MCP and genetic resources for microbial remediation of heavy metal pollution.","PeriodicalId":15231,"journal":{"name":"Journal of Central South University","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phosphorus additives driving the bacterial community succession during Bacillus spp. remediation of the uranium tailings 磷添加剂驱动铀尾矿修复过程中的细菌群落演替

IF 4.4 2区材料科学

Journal of Central South University Pub Date : 2024-06-13 DOI: 10.1007/s11771-024-5628-1

Chui-yun Tang, Juan Zhong, Ying Lyu, Jun Yao, Mu-jiang Li, Xing-yu Liu

{"title":"Phosphorus additives driving the bacterial community succession during Bacillus spp. remediation of the uranium tailings","authors":"Chui-yun Tang, Juan Zhong, Ying Lyu, Jun Yao, Mu-jiang Li, Xing-yu Liu","doi":"10.1007/s11771-024-5628-1","DOIUrl":"https://doi.org/10.1007/s11771-024-5628-1","url":null,"abstract":"Uranium tailings discharged into uranium tailings ponds could generate environmental pollution issues. Microbial-induced phosphate mineralization could reduce the release of uranium, in turn effectively managing pollution. However, it is unclear that how the phosphorus additives affect the microbial structure of uranium tailings under biomineralization. Herein, we evaluate the microbial community succession during Bacillus spp. remediation of uranium tailings, when adding hydroxyapatite (HS) and β-glycerol phosphate pentahydrate (GP). The results show that phosphorus additives effectively changed pH and uranium leaching concentration, significantly increased bacterial richness, and promoted microbial community succession, whilst promoting actinobacteria to Firmicutes and Proteobacteria populations. The two additives influenced the bacterial community succession patterns differently, with GP eliciting the greater enhancement. Additionally, GP enhanced the growth of core species and recognized the phylum firmicutes as a crucial taxon. The abundance of Bacillus, Pseudomonas, Desulfotomaculum, and Clostridium_sensu_stricto_12 was higher in GP treatments, indicating the substantial roles played by these genera in the microbial community. The results provide evidence of the involvement of the two phosphorus additives in bioremediation and bacterial community perturbations and thus provide new insights into the biomineralization technologies for uranium tailings.","PeriodicalId":15231,"journal":{"name":"Journal of Central South University","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0