JOURNAL OF HAZARDOUS MATERIALS
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2019
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IF 7.65
Prakash C. Loni,Mengxiaojun Wu,Weiqi Wang,Hongmei Wang,Liyuan Ma,Chaoyang Liu,Yuyang Song,Olli H Tuovinen
In this study, we demonstrate that a bacterial isolate Paraccocus versutus XT0.6 from the Xikuangshan antimony mine, the world largest antimony deposit, is capable of stibnite dissolution, oxidation of Sb(III), and formation of secondary Sb(V) bearing mineral. The isolate could oxidize dissolved Sb(III) aerobically and anaerobically. It was able to dissolve Sb(III) in solid minerals, which was subsequently oxidized to Sb(V) completely. Part of Sb(V) was scavenged by the formation of secondary Sb(V)-bearing mineral mopungite [NaSb(OH) 6 ] in the biotic experiments. In contrast, Sb(III) released from mineral/rocks was only partially oxidized to Sb(V) and no secondary Sb-bearing mineral was formed in abiotic controls. These results demonstrated that microbial processes involved in the mobilization, oxidation, and transformation of antimony in minerals/rocks under ambient environmental conditions and offer new insights in biogeochemistry of Sb at mining areas.
研究领域:
环境科学
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微生物学
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地球化学
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产品关联
DOI
PubMed
高影响因子
BMC MICROBIOLOGY
·
2016
·Vol. 16
·期 1
·1-11
·
IF 2.581
Wang Dan,Zhu Fengqiu,Wang Qian,Rensing Christopher,Yu Peng,Gong Jing,Wang Gejiao
Background Microbial antimonite [Sb(III)] oxidation converts toxic Sb(III) into less toxic antimonate [Sb(V)] and plays an important role in the biogeochemical Sb cycle. Currently, little is known about the mechanisms underlying bacterial Sb(III) resistance and oxidation. Results In this study, Tn5 transposon mutagenesis was conducted in the Sb(III)-oxidizing strain Pseudomonas stutzeri TS44 to isolate the genes responsible for Sb(III) resistance and oxidation. An insertion mutation into gshA, encoding a glutamate cysteine ligase involved in glutathione biosynthesis, generated a strain called P. stutzeri TS44-gshA 540 . This mutant strain was complemented with a plasmid carrying gshA to generate strain P. stutzeri TS44-gshA-C. The transcription of gshA , the two superoxide dismutase (SOD)-encoding genes sodB and sodC as well as the catalase-encoding gene katE was monitored because gshA -encoded glutamate cysteine ligase is responsible for the biosynthesis of glutathione (GSH) and involved in the cellular stress defense system as are superoxide dismutase and catalase responsible for the conversion of ROS. In addition, the cellular content of total ROS and in particular H 2 O 2 was analyzed. Compared to the wild type P. stutzeri TS44 and TS44-gshA-C, the mutant P. stutzeri TS44-gshA 540 had a lower GSH content and exhibited an increased content of total ROS and H 2 O 2 and increased the Sb(III) oxidation rate. Furthermore, the transcription of sodB , sodC and katE was induced by Sb(III). A positive linear correlation was found between the Sb(III) oxidation rate and the H 2 O 2 content ( R
2 = 0.97), indicating that the accumulated H 2 O 2 is correlated to the increased Sb(III) oxidation rate. Conclusions Based on the results, we propose that a disruption of the pathway involved in ROS-protection allowed H 2 O 2 to accumulate. In addition to the previously reported enzyme mediated Sb(III) oxidation, the mechanism of bacterial oxidation of Sb(III) to Sb(V) includes a non-enzymatic mediated step using H 2 O 2 as the oxidant.
研究领域:
微生物学
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环境科学
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DOI
PubMed
高影响因子
PLANT AND SOIL
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2025
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IF 4.1
Xiong Zicong,Ling Caiyuan,Zhang Qian,Tang Junwei,Gu Jingying,Su Yuan,Yang Weiwei,Zhang Chaolan
Background and aims The oxidation of antimony (Sb) by rhizosphere microorganisms is regarded as a strategy to mitigate the phytotoxicity of Sb(III). This study aims to isolate a highly efficient Sb-oxidizing bacterium (named HC02) from Sb-contaminated soil and to investigate the bacterium's impact on the growth of Brassica napus under practical soil conditions. Methods The oxidative properties of HC02 were assessed in LB liquid medium at a concentration of 0.05 mM. The Brassica napus pot experiment involved inoculating HC02 using two methods: root irrigation treatment (IR02) and root dipping treatment (DR02). The growth of Brassica napus , its Sb content, the chemical properties of the rhizosphere soil, and the chemical forms of Sb present were analyzed. Results The oxidation rate of 0.05 mM Sb(III) by HC02 exceeds 90% within 48 h. HC02 possesses the ability to secrete 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase and indole acetic acid (IAA). The addition of HC02 significantly promoted the growth of Brassica napus . Furthermore, both IR02 and DR02 treatments resulted in a significant reduction of total Sb content in roots, with decreases of 38.7% and 41.6%, respectively. Additionally, these treatments also led to a reduction in Sb(III) content in leaves, with reductions of 7.9% and 20.2%. Conclusions HC02 exhibits a strong oxidizing ability towards Sb(III). The incorporation of HC02 promotes the growth of Brassica napus while effectively preventing the absorption and accumulation of Sb. This research offers a theoretical foundation for the safe utilization of Sb-contaminated soil and the secure production of vegetables. Graphical • Lysinibacillus HC02 is a new highly efficient antimony-oxidizing bacterium. • Antimony toxicity of Brassica napus can be mitigate by Lysinibacillus HC02. • The mechanisms of HC02 regulating absorption and accumulation of Sb in Brassica napus was revealed.
研究领域:
环境微生物学
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植物生理学
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DOI
高影响因子
RSC Advances
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2025
·Vol. 15
·期 21
·16734-16741
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IF 4.6
Xiaofang Sun,Chuanbin Zhang,Youwen Pan,Haiyang Mei,Jiawen Song,Mengfei Zhou
The traditional standard method for the determination of the heavy metal pollutant antimony (Sb) in water, 5-Br-PADAP spectrophotometry, involves the consumption of many kinds of chemical reagents and has low sensitivity. For highly toxic liquid and gas containing Sb(III), this paper presents a green determination method based on UV/O3 synergistic oxidation-malachite green-dispersive liquid–liquid microextraction (DLLME)-spectrophotometry, which can achieve the enrichment of a trace amount of antimony in water and high-precision detection. Using the selective complexation and color development of protonated alkaline dye and the solubility difference of the complexes involved, an enrichment and determination method for trace Sb(V) in surface water was established for the first time. Based on the feature of the UV/O3 system of rapid and complete oxidation of Sb(III), and the easy elimination of the disturbance of residual oxidant, the green determination method for trace total antimony (TSb) was constructed based on advanced oxidation processes (AOPs). To verify the validity of the proposed method, all the process parameters and environmental factors affecting the oxidation efficiency of Sb(III) and the enrichment performance of DLLME were investigated and optimized. The results showed that the proposed method exhibited good linearity (R2 = 0.9943), a low method detection limit (MDL = 0.3208 μg L−1), and high precision (1.63%) and accuracy (0.64%) in the range of 1–30 μg L−1, under the optimized process conditions. By the difference method, the trace free antimony (Sb(III), Sb(V)) and total antimony (TSb) can be determined simultaneously.
研究领域:
环境科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Junfeng Kong,Huazhen Cao,Weilun Qian,Lining Yu,Anyang Tang,Wenyu Feng,Huibin Zhang,Guoqu Zheng
Arsenic is a harmful associated element in antimony ore, which might bring out the risk of leakage during complex industrial production of high-purity antimony. Herein, we reported a novel and efficient way to remove the trace arsenic impurity from acidic SbCl 3 solution by utilizing copper-system bimetallic particles. Specifically, galvanically coupled Cu 2 Sb/Cu was in-situ synthesized by introducing precursor copper powder to the specific SbCl 3 solution. DFT studies revealed that Sb(III) was easily reduced by Cu to form Cu 2 Sb due to the strong adsorption of Sb(III) on Cu (111) crystal plane. The Cu 2 Sb/Cu coupling exhibited excellent activity for As(III) reduction, over 99.4% arsenic were removed under optimal conditions and residual arsenic concentration dropped to only 2.7 mg L −1 . Crucially, Sb(III) concentration changes could be neglected. Besides, the dearsenization residues were extensively characterized to analyze the evolvement and cause in the reaction process. The results confirmed that the arsenic removal mechanisms by Cu 2 Sb/Cu particles were multi-affected, including adsorption, displacement, and precipitation. And the strong electrostatic attraction of AsO + under high HCl conditions was identified as a key step to achieving dearsenization. This research will provide a theoretical guidance for the green synthesis of high-purity antimony and related products.
研究领域:
冶金学
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环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
BIORESOURCE TECHNOLOGY
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2022
·
IF 11.889
Liping Zhang,Yingbo Dong:,Junfei Liu,Wei Liu,Yanrong Lu,Hai Lin
Iron-loaded porous biochar (FPBC) was synthesized by co-pyrolysis method using sawdust and potassium ferrate at 500 (FPBC500) and 800°C (FPBC800), then characterized and applied to eliminate antimonite (Sb(III)) and antimonate (Sb(V)) in aqueous. Due to alkali erosion on feedstock and K/Fe-oxides attacking carbon, FPBC800 obtained a larger specific surface area (SSA) (515.49 m 2 ·g −1 ) that was 5.48-fold that of PFBC500, meaning the exposure of more active sites. Fe 3 O 4 was formed on FPBC500, but Fe 0 and Fe 3 C were generated on FPBC800. FPBC800 showed the optimal sorption performance for Sb(III) (144.48 mg·g −1 ) and Sb(V) (45.29 mg·g −1 ), which were much higher than that of FPBC500. Noteworthily, Sb(III) anchored on FPBC was oxidized to Sb(V) with less ecotoxicity; moreover, FPBC800 with Fe 0 showed stronger oxidization. Although pH-dependent sorption of Sb(III)/Sb(V) on FPBC occurred, the resistance to environmental factors showed a potential for eliminating actual pollution, demonstrating an easy-to-operate construction strategy for modified biochar.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOM
·
2022
·Vol. 74
·期 3
·915-923
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IF 2.597
Fu Chengcheng,Ru Juanjian,Hua Yixin,Xue Yu,Bu Jiaojiao,Wang Zhiwei,Zhang Yuan
For the decontamination of Pb in a contaminated Sb alloy, the separation behaviors of Sb and Pb are investigated in choline chloride-ethylene glycol deep eutectic solvent (ChCl-EG DES) at 323–363 K. Linear sweep voltammetry measurements are recorded for determining the electrochemical behaviors of Sb and Pb in a 0.1-M SbCl 3 +ChCl-EG solution. The oxidation potentials of Sb and Pb are + 0.021 V and − 0.05 V at 323 K, respectively, which implies that the addition of SbCl 3 benefits the dissolution of Sb, while that of Pb is opposite. In addition, the reduction potential of Sb(III) is more positive than that of Pb(II), which suggests that the separation of Sb from the Pb-containing Sb alloy is feasible. The effects of temperature and current density are discussed during the electrorefining process. The results show that high-purity Sb powders (99.978%) can be obtained at 30 mA cm −2 and 343 K, and that the current efficiency is about 95.42%.
研究领域:
材料科学
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冶金学
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环境化学
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应用电化学
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资源回收
✓ 已验证
DOI
高影响因子
Sustainable Energy & Fuels
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2020
·Vol. 4
·期 11
·5732-5738
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IF 5.503
Dongdong Li,Junzhi Li,Junming Cao,Xiyao Fu,Liang Zhou,Wei Han
Sb and Sb2O3 are attractive anode materials for sodium ion batteries due to their relatively low cost and high theoretical capacity. However, the poor cycling stability caused by serious volume expansion hinders their development. In this work, we use electrospinning and carbon thermal reduction to easily synthesize Sb/Sb2O3@N-doped carbon nanofiber membranes. The flexible Sb/Sb2O3@NCNF membranes are directly used as free-standing electrodes in SIBs showing a high specific capacity and excellent cycling stability (527.3 mA h g−1 after 100 cycles at 0.1 A g−1). They can still deliver a reversible specific capacity around 400 mA h g−1 after 700 cycles even at 1 A g−1. The flexible free-standing design, simple synthesis methods and excellent electrochemical properties make the Sb/Sb2O3@NCNF electrodes an ideal anode candidate material for sodium ion batteries.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2023
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IF 9.8
Wangjun Lin,Linfeng Peng,Hui Li,Tangfu Xiao,Jianqiao Wang,Nana Wang,Xiangting Zhang,Hanmo Zhang
Fe(II)-induced phase transformations of secondary iron minerals have attracted considerable attention due to their influence on antimony (Sb) mobility. However, Fe(II)-induced natural multicomponent secondary iron mineral (nmSIM) transformations and the corresponding repartitioning of Sb on nmSIM under acidic conditions upon Fe(II) exposure have not been systematically examined. Herein, we investigated the effect of Fe(II) on nmSIM mineralogy and Sb mobility in Sb(V)-bearing nmSIM at pH 3.8 and 5.6 at various Fe(II) concentrations over 15 d. The Sb(V)-bearing nmSIM phase transformation occurred under both strongly and weakly acidic conditions without Fe(II) exposure, while the presence of Fe(II) significantly intensified the transformation, and substantial amounts of intermediary minerals, including jarosite , ferrihydrite , lepidocrocite and fougerite, formed during the initial reaction stage, especially at pH 5.6. X-ray diffraction (XRD) analyses confirmed that goethite and hematite were the primary final-stage transformation products of Sb(V)-bearing nmSIM, regardless of Fe(II) exposure. Throughout the Sb(V)-bearing nmSIM transformation at pH 3.8, Sb release was inversely related to the Fe(II) concentration in the initial stage, and after maximum release was achieved, Sb was gradually repartitioned onto the nmSIM. No Sb repartitioning occurred in the absence of Fe(II) at pH 5.6, but the introduction of Fe(II) suppressed Sb release and improved Sb repartitioning on nmSIM. This transformation was conducive to Sb reimmobilization on Sb(V)-bearing nmSIM due to the structural incorporation of Sb into the highly crystalline goethite and hematite generated by the Sb(V)-bearing nmSIM transformation, and no reduction of Sb(V) occurred. These results imply that Fe(II) can trigger mineralogical changes in Sb(V)-bearing nmSIM and have important impacts on Sb partitioning under acidic conditions. These new insights are essential for assessing the mobility and availability of Sb in acid mine drainage areas.
研究领域:
环境科学
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矿物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL GEOLOGY
·
2025
·
IF 3.6
Ting Lu,Li Shao,Aiwen Wu,Zengping Ning,Tangfu Xiao,Enzong Xiao
This study investigates the geochemical behavior of antimony (Sb) during the suboxic weathering of stibnite through both chemical and microbial processes. Our study revealed that microbial process suppresses the stibnite dissolution compared to chemical processes, contrasting with established models of Sb geochemical behaviors in oxic environments. In early stages, chemical weathering group (AS) and a microbial weathering group (BS) achieved comparable aqueous Sb concentrations (∼0.2 mM), yet through divergent mechanisms: AS formed passivating sénarmontite (Sb₂O₃) coatings via rapid surface oxidation, while BS established biofilms that physically decoupled Sb release from oxidative dissolution. In late stages, a paradigm shift occurred: AS exhibited 3-fold higher aqueous Sb (∼0.6 mM) compared to BS, with >95 % Sb(V) due to Fe(II)/Fe(III) redox cycling. This process enhanced Sb(III) oxidation kinetics and promoted Sb(V)-Fe(III) oxyhydroxide coprecipitation, confirmed by XPS spectra. In contrast, BS maintained stable Sb levels (0.2 mM) with limited Sb(V) accumulation (58 %). Microbial consortia sequestered Fe(II) through enzymatic reduction, disrupting iron redox cycling and reducing Sb release. This “biogenic passivation” mechanism stabilized Sb, differing from oxic systems where biofilms typically accelerate Sb(III) oxidation. The findings improve predictions of Sb mobility in suboxic environments and suggest biofilm-mediated strategies for Sb pollution control.
研究领域:
环境地球化学
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微生物生态学
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生物地球化学
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环境科学
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矿物学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Yu Xin,Shuqing Nie,Shi Pan,Chang Miao,Haoyi Mou,Minyue Wen,Wei Xiao
The SnSb and TiO 2 nanoparticles uniformly embedded into continuous and conductive carbon nanofibers (CNFs) are successfully fabricated through facile electrospinning combined with calcination treatments. The characterization results of the targeted composite nanofibers (Sb-SnSb/TiO 2 @CNFs-2) confirm that the presence of TiO 2 is of significant importance to construct the elaborately designed and intact fiber structure, in which the optimal dosage of the TiO 2 precursor is precisely controlled at 2 mmol. Moreover, high theoretical specific capacity of SnSb, available inhibitory effect of TiO 2 , and great electronic conductivity of CNFs are cooperatively integrated into the Sb-SnSb/TiO 2 @CNFs-2 composite nanofibers, guaranteeing the enhanced lithium storage capacity and cycling performance when being employed as the anode electrodes. Specifically, the Sb-SnSb/TiO 2 @CNFs-2 electrode can not only deliver initial discharge specific capacity of 1146.6 mAh/g at 100 mA/g and reversible discharge specific capacity of 580.4 mAh/g after 100 cycles, but also retain discharge specific capacity of 561.3 mAh/g after rate cycles along with recovering the current density to 100 mA/g. Importantly, the Sb-SnSb/TiO 2 @CNFs-2 electrode is also endowed with prominent advantages in the pseudocapacitive contribution of 66.89 % at 0.8 mV/s. Those investigations and findings of the Sb-SnSb/TiO 2 @CNFs-2 composite electrodes with facile fabrication process and excellent electrochemical performance can contribute to the practical application of the alloy anodes in the field of the energy storage.
研究领域:
材料科学
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能源存储
·
纳米技术
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2022
·
IF 6.371
Yunhao Zhu,Jie Shao,Yu Jiang,Kejia Zhang,Qiang Shi,Qunting Qu,Honghe Zheng
Alloying-type anodes exhibit unique advantages in terms of capacity and working potentials for practical application in sodium-ion batteries (SIBs). Sb-based nanocrystallites are prepared through a low-cost and large-scalable route by reducing the industrial antimony white (Sb 2 O 3 ) in aqueous solutions under mild conditions and studied as the anode materials of SIBs. Compared with the pristine Sb 2 O 3 and partially reduced Sb/Sb 2 O 3 hybrid, the totally reduced product (pure Sb nanocrystallite) manifests the most steady desodiation potential, highest capacity at around 0.75 V vs. Na + /Na, highest initial Coulombic efficiency, longest cycling life, and fastest charge/discharge rate. The different electrochemical performance of as-prepared materials is discussed from the perspective of Na-storage mechanisms. The results demonstrate that the as-prepared pure Sb nanocrystallite is more promising than its oxides for practical application in SIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）