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Guan W, Zhang Z, Liu Y, Ji Y, Tong X, Liu Y, Chen J, Alvarez PJJ, Chen W, Zhang T. Crystalline Phase Regulates Microbial Methylation Potential of Mercury Bound to MoS 2 Nanosheets: Implications for Safe Design of Mercury Removal Materials. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:13110-13119. [PMID: 38989600 DOI: 10.1021/acs.est.4c01552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
Transition-metal dichalcogenides (TMDs) have shown great promise as selective and high-capacity sorbents for Hg(II) removal from water. Yet, their design should consider safe disposal of spent materials, particularly the subsequent formation of methylmercury (MeHg), a highly potent and bioaccumulative neurotoxin. Here, we show that microbial methylation of mercury bound to MoS2 nanosheets (a representative TMD material) is significant under anoxic conditions commonly encountered in landfills. Notably, the methylation potential is highly dependent on the phase compositions of MoS2. MeHg production was higher for 1T MoS2, as mercury bound to this phase primarily exists as surface complexes that are available for ligand exchange. In comparison, mercury on 2H MoS2 occurs largely in the form of precipitates, particularly monovalent mercury minerals (e.g., Hg2MoO4 and Hg2SO4) that are minimally bioavailable. Thus, even though 1T MoS2 is more effective in Hg(II) removal from aqueous solution due to its higher adsorption affinity and reductive ability, it poses a higher risk of MeHg formation after landfill disposal. These findings highlight the critical role of nanoscale surfaces in enriching heavy metals and subsequently regulating their bioavailability and risks and shed light on the safe design of heavy metal sorbent materials through surface structural modulation.
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Affiliation(s)
- Wenyu Guan
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Road, Tianjin 300350, China
| | - Zhanhua Zhang
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Road, Tianjin 300350, China
| | - Yaqi Liu
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Road, Tianjin 300350, China
| | - Yunyun Ji
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Road, Tianjin 300350, China
| | - Xin Tong
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Road, Tianjin 300350, China
| | - Yaqi Liu
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Road, Tianjin 300350, China
| | - Jiubin Chen
- School of Earth System Science, Tianjin University, 92 Weijin Road, Tianjin 300072, China
| | - Pedro J J Alvarez
- Department of Civil and Environmental Engineering, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Wei Chen
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Road, Tianjin 300350, China
| | - Tong Zhang
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Road, Tianjin 300350, China
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Shen L, Tong H, Zhang Z, Liu B, Sun M, Wu H, Zhou C, Zhu L, Xie S, Zhou Y, Tang G, Liu J, Yang H. Insights into the enhanced mechanism of selenium-doped iron nitride carbon catalysts for elemental mercury removal in flue gas. J Colloid Interface Sci 2024; 674:194-208. [PMID: 38925065 DOI: 10.1016/j.jcis.2024.06.150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 06/03/2024] [Accepted: 06/20/2024] [Indexed: 06/28/2024]
Abstract
This study developed a novel selenium-doped metal nitride carbon, Fe-NC-Se, via pyrolysis and impregnated hydrothermal methods for elemental mercury removal from coal-fired flue gas. The Fe-NC-Se demonstrated a remarkable mercury removal performance, achieving an average efficiency of 96.98% within 60 min at an optimal Se/Fe ratio of 2:1 and temperature of 110 °C, which was 2.5 times higher than that of the pristine Fe-NC (iron nitride carbon). Notably, Fe-NC-Se maintained an 84% efficiency in a high SO2 environment (1600 ppm), indicating strong resistance to SO2 poisoning. Long-term testing over 24 h showed a consistent removal efficiency of 84.75%, suggesting potential for recyclability. Advanced characterization techniques, including TEM (transmission electron microscopy) and XPS (X-ray photoelectron spectrometer), along with Density Functional Theory calculations, were employed to explore the removal mechanism. Results indicated that selenium doping enhanced surface charge transfer and the reactivity of surface atoms, facilitating mercury oxidation and sequestration. The oxidized Hg2+ was anchored by Se and partially stabilized by C, N, and Fe atoms, enhancing the catalyst's effectiveness. This work not only advances the design of mercury abatement catalysts but also supports the industrial applicability of Fe-NC-Se in flue gas treatment.
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Affiliation(s)
- Linzhi Shen
- School of Energy and Mechanical Engineering, Nanjing Normal University, 210023 Nanjing, China
| | - Hui Tong
- School of Energy and Mechanical Engineering, Nanjing Normal University, 210023 Nanjing, China
| | - Zhen Zhang
- School of Energy and Mechanical Engineering, Nanjing Normal University, 210023 Nanjing, China.
| | - Biao Liu
- School of Energy and Mechanical Engineering, Nanjing Normal University, 210023 Nanjing, China
| | - Menglong Sun
- School of Energy and Mechanical Engineering, Nanjing Normal University, 210023 Nanjing, China
| | - Hao Wu
- School of Energy and Mechanical Engineering, Nanjing Normal University, 210023 Nanjing, China
| | - Changsong Zhou
- School of Energy and Mechanical Engineering, Nanjing Normal University, 210023 Nanjing, China
| | - Lingli Zhu
- School of Energy and Mechanical Engineering, Nanjing Normal University, 210023 Nanjing, China
| | - Shengyu Xie
- School of Energy and Mechanical Engineering, Nanjing Normal University, 210023 Nanjing, China
| | - Yaming Zhou
- Shanghai Research Institute of Chemical Industry Co., Ltd, 200062 Shanghai, China
| | - Guanghua Tang
- Nanjing Guodian Environmental Protection Technology Co., Ltd, 210061 Nanjing, China
| | - Jing Liu
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Hongmin Yang
- School of Energy and Mechanical Engineering, Nanjing Normal University, 210023 Nanjing, China.
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Li J, Gao Y, Li C, Wang F, Chen H, Yang X, Jeyakumar P, Sarkar B, Luo Z, Bolan N, Li X, Meng J, Wang H. Pristine and Fe-functionalized biochar for the simultaneous immobilization of arsenic and antimony in a contaminated mining soil. JOURNAL OF HAZARDOUS MATERIALS 2024; 469:133937. [PMID: 38460259 DOI: 10.1016/j.jhazmat.2024.133937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 02/28/2024] [Accepted: 02/29/2024] [Indexed: 03/11/2024]
Abstract
This study examined the effectiveness of pristine biochar (BC) and Fe-functionalized biochar (FBC) in remediating As-Sb co-contaminated soil, and revealed the resulting impact on soil enzymatic activities and bacterial communities. Results from incubation experiments showed that the 1.5% FBC treatment reduced the bioavailable As and Sb concentration by 13.5% and 27.1%, respectively, in compared to the control, and reduced the proportion of specifically adsorbed and amorphous Fe-Mn oxide-bound metal(loid) fractions in the treated soil. Among the BC treatments, only the 1.5% BC treatment resulted in a reduction of bioavailable As by 11.7% and Sb by 21.4%. The 0.5% BC treatment showed no significant difference. The FBC achieved high As/Sb immobilization efficiency through Fe-induced electrostatic attraction, π-π electron donor-acceptor coordination, and complexation (Fe-O(H)-As/Sb) mechanisms. Additionally, the 1.5% FBC treatment led to a 108.2% and 367.4% increase in the activities of N-acetyl-β-glucosaminidase and urease in soils, respectively, compared to the control. Furthermore, it significantly increased the abundance of Proteobacteria (15.2%), Actinobacteriota (37.0%), Chloroflexi (21.4%), and Gemmatimonadota (43.6%) at the phylum level. Co-occurrence network analysis showed that FBC was better than BC in increasing the complexity of bacterial communities. Partial least squares path modeling further indicated that the addition of biochar treatments can affect soil enzyme activities by altering soil bacterial composition. This study suggests that FBC application offers advantages in simultaneous As and Sb immobilization and restructuring the bacterial community composition in metal(loid)-contaminated soil.
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Affiliation(s)
- Jiayi Li
- Agronomy College, Shenyang Agricultural University, Shenyang 110866, China; School of Environmental and Chemical Engineering, Foshan University, Foshan 528000, China
| | - Yurong Gao
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Caibin Li
- Yancao Production Technology Center, Bijie Yancao Company of Guizhou Province, Bijie 551700, China
| | - Fenglin Wang
- School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Hanbo Chen
- Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province, School of Environment and Natural Resources, Zhejiang University of Science & Technology, Hangzhou 310023, China
| | - Xing Yang
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, School of Ecology and Environment, Hainan University, Haikou 570228, China
| | - Paramsothy Jeyakumar
- Environmental Sciences, School of Agriculture & Environment, Massey University, Private Bag 11 222, Palmerston North 4442, New Zealand
| | - Binoy Sarkar
- Future Industries Institute, University of South Australia, Mawson Lakes, SA 5095, Australia
| | - Zhenbao Luo
- Yancao Production Technology Center, Bijie Yancao Company of Guizhou Province, Bijie 551700, China
| | - Nanthi Bolan
- UWA School of Agriculture and Environment, The University of Western Australia, Perth, Western Australia 6009, Australia
| | - Xiaofei Li
- School of Environmental and Chemical Engineering, Foshan University, Foshan 528000, China
| | - Jun Meng
- Agronomy College, Shenyang Agricultural University, Shenyang 110866, China.
| | - Hailong Wang
- Agronomy College, Shenyang Agricultural University, Shenyang 110866, China; School of Environmental and Chemical Engineering, Foshan University, Foshan 528000, China; Guangdong Provincial Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China.
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Zeng Y, Xu L, Su J, Liu S, Ali A, Zhang P, Cao S. Denitrification driven by additional ferrous (Fe 2+) and manganous (Mn 2+) and removal mechanism of tetracycline and cadmium (Cd 2+) by biogenic Fe-Mn oxides. ENVIRONMENTAL RESEARCH 2024; 246:118159. [PMID: 38218519 DOI: 10.1016/j.envres.2024.118159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/05/2024] [Accepted: 01/06/2024] [Indexed: 01/15/2024]
Abstract
Zoogloea sp. MFQ7 achieved excellent denitrification of 91.71% at ferrous to manganous ratio (Fe/Mn) of 3:7, pH of 6.5, nitrate concentration of 25 mg L-1 and carbon to nitrogen ratio of 1.5. As the Fe/Mn ratio increasd, the efficiency of nitrate removal gradually decreased, indicating that strain MFQ7 had a higher affinity for Mn2+ than Fe2+. In situ generated biogenic Fe-Mn oxides (BFMO) contained many iron-manganese oxides (MnO2, Mn3O4, FeO(OH), Fe2O3, and Fe3O4) as well as reactive functional groups, which play an significant part in tetracycline (TC) and cadmium (Cd2+) adsorption. The adsorption of TC and Cd2+ by BFMO can better fit the pseudo-second-order and Langmuir models. In addition, multiple characterization results of before and after adsorption indicated that the removal mechanism of BFMO on TC and Cd2+ was probably surface complexation adsorption and redox reactions.
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Affiliation(s)
- Yuxin Zeng
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Liang Xu
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Junfeng Su
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China.
| | - Shuyu Liu
- School of Environment and Chemistry Engineering, Shanghai University, Shanghai, 200444, China.
| | - Amjad Ali
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Peng Zhang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Shumiao Cao
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
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Zhao D, Li Z, Zhu K, Lu A, Wang Y, Jiang J, Tang C, Shen XC, Ruan C. Highly dispersed amorphous nano-selenium functionalized carbon nanofiber aerogels for high-efficient uptake and immobilization of Hg(II) ions. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133162. [PMID: 38086302 DOI: 10.1016/j.jhazmat.2023.133162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 11/22/2023] [Accepted: 11/30/2023] [Indexed: 02/08/2024]
Abstract
Owing to the strong Hg-Se interaction, Se-containing materials are promising for the uptake and immobilization of Hg(II) ions; compared with metal selenides or selenized compounds, elemental Se contains the highest ratio of Se. However, it remains a challenge to fully expose all the potential Se binding sites and achieve high utilization efficiency of elemental Se. Through rational design on the structure, dispersity, and size of materials, Se/CNF aerogels composed of abundant well-dispersed and amorphous nano-Se have been prepared and applied for the high-efficient uptake and immobilization of Hg(II) ions. The well-dispersion of nano-Se increases the exposure of Se sites, the amorphous structure benefits the easy cleavage of Se-Se bonds, the 3D porous networks of aerogels permit fast ions transport and easy operation. Benefiting from the combination effect of strong Hg-Se interaction and sufficient exposure of Se-enriched sites, the Se/CNF aerogels demonstrate strong binding ability (Kd = 3.8 ×105 mL·g-1), high capacity (943.4 mg·g-1), and preeminent selectivity (αMHg > 100) towards highly toxic Hg(II) ions. Notably, the utilization efficiency of Se in Se/CNF aerogels is as high as 99.5%. Moreover, the strong Hg-Se interaction and extraordinary stability of HgSe could minimize the environmental impact of the spent Se/CNF adsorbents after its disposal.
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Affiliation(s)
- Dongmin Zhao
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Zhuoyan Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Kaini Zhu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Ai Lu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Ying Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Jingjing Jiang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Cong Tang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Xing-Can Shen
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, People's Republic of China.
| | - Changping Ruan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, People's Republic of China.
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Soares VR, Silva EC, Gomes CG, Vieira MA, Fajardo AR. Fluorescent composite beads: An advanced tool for environmental monitoring and harmful pollutants removal from water. CHEMOSPHERE 2024; 350:140911. [PMID: 38145844 DOI: 10.1016/j.chemosphere.2023.140911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 11/18/2023] [Accepted: 12/04/2023] [Indexed: 12/27/2023]
Abstract
The quality and safety of water sources have been significantly impacted by various pollutants, including trace elements. To address this concern, this study utilized composite beads made of alginate and carbon quantum dots (CDs) for detecting and removing As(III) and Se(IV) ions in tap water. Fluorescent CDs were hydrothermally synthesized and incorporated into an alginate-Ca2+ matrix through a straightforward procedure. Characterization analyses revealed distinct properties of the composite beads, containing varying amounts of CDs, compared to the pristine beads. Optimal adsorption parameters (30 mg of adsorbent, 10 mg/L of initial pollutant concentration, 35 °C, and 180 min of contact time) for the beads containing 30 w/w-% of CDs (Alg@CDs30) were determined through a fractional factorial design. These composite beads exhibited the highest adsorption capacity for both metals, achieving a removal rate of 94.5% for As(III) and 98.0% for Se(IV) in tap water. Kinetic and isothermal analyses indicated that the adsorption of both metals on Alg@CDs30 involves a combination of chemisorption and diffusion processes. Recycling experiments demonstrated that the composite beads could be reused up to 20 times without a noticeable loss of adsorption efficiency. Regarding the sensing property, our experiments revealed a significant reduction in the fluorescence emission intensity of Alg@CDs30 upon interaction with As(III) and Se(IV), confirming its ability to detect both ions in tap water, with limits of detection (LOD) of 2.6 ± 0.5 μg/L for As(III) and 1.1 ± 0.2 μg/L for Se(IV). The alginate-Ca2+ matrix s contributed to the stability of the CDs' fluorescence. These results confirm the potential of Alg@CDs beads as effective tools for the simultaneous monitoring and removal of hazardous metal ions from real water samples.
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Affiliation(s)
- Victória R Soares
- Laboratório de Tecnologia e Desenvolvimento de Compósitos e Materiais Poliméricos (LaCoPol), Universidade Federal de Pelotas (UFPel), Campus Capão do Leão s/n, 96010-900, Pelotas-RS, Brazil
| | - Emilly C Silva
- Laboratório de Tecnologia e Desenvolvimento de Compósitos e Materiais Poliméricos (LaCoPol), Universidade Federal de Pelotas (UFPel), Campus Capão do Leão s/n, 96010-900, Pelotas-RS, Brazil
| | - Charlie G Gomes
- Laboratório de Metrologia Química (LabMequi), Universidade Federal de Pelotas (UFPel), Campus Capão do Leão s/n, 96010-900, Pelotas-RS, Brazil
| | - Mariana A Vieira
- Laboratório de Metrologia Química (LabMequi), Universidade Federal de Pelotas (UFPel), Campus Capão do Leão s/n, 96010-900, Pelotas-RS, Brazil
| | - André R Fajardo
- Laboratório de Tecnologia e Desenvolvimento de Compósitos e Materiais Poliméricos (LaCoPol), Universidade Federal de Pelotas (UFPel), Campus Capão do Leão s/n, 96010-900, Pelotas-RS, Brazil.
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Yilmaz E, Yavuz E. Use of transition metal dichalcogenides (TMDs) in analytical sample preparation applications. Talanta 2024; 266:125086. [PMID: 37633038 DOI: 10.1016/j.talanta.2023.125086] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 08/10/2023] [Accepted: 08/15/2023] [Indexed: 08/28/2023]
Abstract
Since the discovery of graphene, nano-sized two-dimensional (2D) transition metal dichalcogenides (TMDs) such as MoS2, MoSe2, MoTe2, NbS2, NbSe2, WS2, WSe2, TaS2 and TaSe2, which have been classified as next-generation nanomaterials resembling graphene (G) have complementary basic properties with those of graphene in terms of their practical applications. TMDs are attracting great attention due to their attractive physical, chemical and electronic properties. Despite being overshadowed by graphene in terms of frequency of use, TMDs have been used frequently in many areas in recent years instead of carbon-based materials such as graphene (G), graphene oxide (GO), carbon nanotubes (CNTs) and nanodiamonds (NDs). It is seen that the first and frequent uses of TMDs, which are classified as new generation materials, are in the fields of catalysis, electronic applications, hydrogen production processes and energy storage, but it has been used as an adsorbent in sample preparation techniques in recent years. Similar to graphene, layers of TMDs are held together by weak van der Waals interactions. The sandwiched layers of TMDs provide sufficient and effective interlayer spaces so that foreign molecules, ions and atoms can easily enter these spaces between the layers. Intermolecular interactions increase with the entry of different materials into these spaces, and thus, high activity, adsorption capacity and efficiency are obtained in adsorption-based analytical sample preparation methods. Although there are about 35 research articles using TMDs, which are classified as promising materials in analytical sample preparation techniques, no review studies have been found. This review, which was designed with this awareness, contains important informations on the properties of metal dichalcogenides, their production methods and their use in analytical sample preparation techniques.
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Affiliation(s)
- Erkan Yilmaz
- Technology Research & Application Center (TAUM), Erciyes University, 38039, Kayseri, Turkey; ERNAM-Erciyes University, Nanotechnology Application and Research Center, 38039, Kayseri, Turkey; Erciyes University, Faculty of Pharmacy, Department of Analytical Chemistry, 38039, Kayseri, Turkey; ChemicaMed Chemical Inc., Erciyes University Technology Development Zone, 38039 Kayseri, Turkey.
| | - Emre Yavuz
- Erzincan Binali Yildirim University, Cayirli Vocational School, Department of Medical Services and Technicians, 24503, Erzincan, Turkey.
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Cheng X, Luo T, Chu F, Feng B, Zhong S, Chen F, Dong J, Zeng W. Simultaneous detection and removal of mercury (II) using multifunctional fluorescent materials. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:167070. [PMID: 37714350 DOI: 10.1016/j.scitotenv.2023.167070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/02/2023] [Accepted: 09/12/2023] [Indexed: 09/17/2023]
Abstract
Environmental problems caused by mercury ions are increasing due to growing industrialization, poor enforcement, and inefficient pollutant treatment. Therefore, detecting and removing mercury from the ecological chain is of utmost significance. Currently, a wide range of small molecules and nanomaterials have made remarkable progress in the detection, detoxification, adsorption, and removal of mercury. In this review, we summarized the recent advances in the design and construction of multifunctional materials, detailed their sensing and removing mechanisms, and discussed with emphasis the advantages and disadvantages of different types of sensors. Finally, we elucidated the problems and challenges of current multifunctional materials and further pointed out the direction for the future development of related materials. This review is expected to provide a guideline for researchers to establish a robust strategy for the detection and removal of mercury ionsin the environment.
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Affiliation(s)
- Xiang Cheng
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China; Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha 410013, China; The Molecular Imaging Research Center, Central South University, Changsha 410013, China
| | - Ting Luo
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China; Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha 410013, China; The Molecular Imaging Research Center, Central South University, Changsha 410013, China
| | - Feiyi Chu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China; Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha 410013, China; The Molecular Imaging Research Center, Central South University, Changsha 410013, China
| | - Bin Feng
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China; Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha 410013, China; The Molecular Imaging Research Center, Central South University, Changsha 410013, China
| | - Shibo Zhong
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China; Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha 410013, China; The Molecular Imaging Research Center, Central South University, Changsha 410013, China
| | - Fei Chen
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China; Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha 410013, China; The Molecular Imaging Research Center, Central South University, Changsha 410013, China
| | - Jie Dong
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China; Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha 410013, China; The Molecular Imaging Research Center, Central South University, Changsha 410013, China
| | - Wenbin Zeng
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China; Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha 410013, China; The Molecular Imaging Research Center, Central South University, Changsha 410013, China.
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Indurkar PD, Raj SK, Kulshrestha V. Multivariate modeling and process optimization of Hg(II) remediation using solvothermal synthesized 2D MX/Fe 3O 4 by response surface methodology: characteristics and mechanism study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27687-7. [PMID: 37233927 DOI: 10.1007/s11356-023-27687-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 05/12/2023] [Indexed: 05/27/2023]
Abstract
Two-dimensional MXene with layered structure has recently emerged as a nanomaterial with fascinating characteristics and applicability. Herein, we prepared the newly modified magnetic MXene (MX/Fe3O4) nanocomposite using solvothermal approach and investigated its adsorption behavior to study the removal efficiency of Hg(II) ions from aqueous solution. The effect of adsorption parameters such as adsorbent dose, time, concentration, and pH were optimized using response surface methodology (RSM). The experimental data fitted well with quadratic model to predict the optimum conditions for maximum Hg(II) ion removal efficiency which were found to be at adsorbent dose 0.871 g/L, time 103.6 min, concentration 40.17 mg/L, and 6.5 pH respectively. To determine the adequacy of the developed model, a statistical analysis of variance (ANOVA) was used, which demonstrated high agreement between the experimental data and the suggested model. According to isotherm result, the experimental data were following the best agreement with the Redlich-Peterson isotherm model. The results of the experiments revealed that the maximum Langmuir adsorption capacity of 699.3 mg/g was obtained at optimum conditions, which was closed to the experimental adsorption capacity of 703.57 mg/g. The adsorption phenomena was well represented by the pseudo-second-order model (R2 = 0.9983). On the whole, it was clear that MX/Fe3O4 has lot of potential as a Hg(II) ion impurity removal agent in aqueous solutions.
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Affiliation(s)
- Pankaj D Indurkar
- Membrane Science & Separation Technology Division, CSIR-Central Salt & Marine Chemicals Research Institute, G. B. Marg, Bhavnagar, 364002, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
| | - Savan K Raj
- Membrane Science & Separation Technology Division, CSIR-Central Salt & Marine Chemicals Research Institute, G. B. Marg, Bhavnagar, 364002, India
- Department of Physics, The MK Bhavnagar University, Bhavnagar, 364 002, India
| | - Vaibhav Kulshrestha
- Membrane Science & Separation Technology Division, CSIR-Central Salt & Marine Chemicals Research Institute, G. B. Marg, Bhavnagar, 364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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10
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Zhang S, Qian L, Zhou Y, Guo Y. High selective removal towards Hg(II) from aqueous solution with magnetic diatomite-based adsorbent functionalized by poly(3-aminothiophenol): conditional optimization, application, and mechanism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:56121-56136. [PMID: 36913017 DOI: 10.1007/s11356-023-26070-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
A novel diatomite-based (DMT) material was obtained by post-functionalization of DMT/CoFe2O4 with 3-aminothiophenol and applied to remove Hg(II) ions from aqueous solution. The obtained adsorbent of DMT/CoFe2O4-p-ATP was detected by various characterization means. The optimization of response surface methodology reveals that magnetic diatomite-based material of DMT/CoFe2O4-p-ATP has an optimal adsorption capability of 213.2 mg/g towards Hg(II). The removal process of Hg(II) is fitted well to pseudo-second-order and Langmuir models, respectively, indicating that the adsorption process is controlled by monolayer chemisorption. DMT/CoFe2O4-p-ATP exhibits superior affinity towards Hg(II) through electrostatic attraction and surface chelation, compared with other coexisting heavy metal ions. Meanwhile, the prepared adsorbent DMT/CoFe2O4-p-ATP displays excellent recyclability, good magnetic separation performance, and satisfying stability. The as-prepared diatomite-based DMT/CoFe2O4-p-ATP can be a promising adsorbent for mercury ions.
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Affiliation(s)
- Shuyuan Zhang
- Department of Municipal Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Lin Qian
- Department of Municipal Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Yu Zhou
- Department of Municipal Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Yongfu Guo
- Department of Municipal Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China.
- Jiangsu Collaborative Innovation Center of Water Treatment Technology and Material, Suzhou, 215009, Jiangsu, China.
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11
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Tong Y, Wu Y, Bai H, Li S, Jiang L, Zhou Q, Chen C. Highly efficient and simultaneous magnetic solid phase extraction of heavy metal ions from water samples with l-Cysteine modified magnetic polyamidoamine dendrimers prior to high performance liquid chromatography. CHEMOSPHERE 2023; 313:137340. [PMID: 36455659 DOI: 10.1016/j.chemosphere.2022.137340] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/17/2022] [Accepted: 11/19/2022] [Indexed: 06/17/2023]
Abstract
Due to the strong metal-sulfur interaction between mercapto groups and metal ions, which can be used to functionalize polyamidoamine dendrimer decorated Fe3O4 nanoparticles for high enrichment of trace heavy metal ions from waters. Based on this concept, polyamidoamine dendrimer modified Fe3O4 nanomaterials were functionalized with l-Cysteine and a new magnetic solid phase extraction for rapid adsorption and separation of Hg2+, Pb2+, Co2+ and Cd2+ from waters was established. The factors affecting extraction efficiency have been optimized. Upon the optimal parameters, the established method provided good linear ranges of 0.1-200 μg L-1 for Hg2+ and 0.05-200 μg L-1 for Pb2+, Co2+ and Cd2+, and high sensitivity with limits of detection (LOD) of 0.018 μg L-1, 0.014 μg L-1, 0.013 μg L-1 and 0.025 μg L-1 for Cd2+, Pb2+, Co2+ and Hg2+, respectively. Real water samples were utilized to validate the proposed method, and achieved results revealed that the proposed method was sensitive, effective, stable and suitable for monitoring Pb2+, Cd2+, Co2+and Hg2+ in environmental waters. This work provided a novel strategy for the simultaneous analysis of target cations in waters, and a new direction for developing decoration method of nanomaterials according to specific purpose.
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Affiliation(s)
- Yayan Tong
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Yalin Wu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing, 102249, China; Beijing Municipal Research Institute of Eco-Environmental Protection, Beijing, 100037, China
| | - Huahua Bai
- Beijing Municipal Research Institute of Eco-Environmental Protection, Beijing, 100037, China
| | - Shuangying Li
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Liushan Jiang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Qingxiang Zhou
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing, 102249, China.
| | - Chunmao Chen
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing, 102249, China
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12
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Gao Y, Fang Z, Lin W, Chen H, Bhatnagar A, Li J, Xie Y, Bao Y, Chen J, Zhao H, Meng J, Chen W, Wang H. Large-flake graphene-modified biochar for the removal of bisphenol S from water: rapid oxygen escape mechanism for synthesis and improved adsorption performance. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 317:120847. [PMID: 36496064 DOI: 10.1016/j.envpol.2022.120847] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/21/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
The combined effects of graphene and biochar for enhanced adsorption of organic pollutants have not been demonstrated yet. Therefore, the mechanisms of graphene-modified biochar synthesis and its application to adsorption of contaminants remain unclear. In this study, the effect of flake-size graphene on biochar modification and its bisphenol S (BPS) adsorption performance was explored for the first time. Three sizes of graphene oxide were used as the precursor to prepare graphene/biochar composites using pyrolysis. It was found that the graphene with a small flake size was interspersed in the macropores of biochar, while the biochar was completely or mostly wrapped by the large-sized graphene sheet, which effectively prevented the agglomeration and pore blockage of biochar. Large-flake graphene oxide modified biochar (LGB) showed the highest adsorption capacity towards BPS, exhibiting 2.8 times higher adsorption than pristine biochar. Density functional theory (DFT) calculation suggested that the maximum diffusion barrier of O atoms in graphene coated cellulose (most frequently used biochar representative) could be reduced significantly (∼46%) at pyrolysis temperature of 873 K. Taking the advantage of small amount of graphene and enhanced adsorption performance, LGB could be a promising adsorbent for the removal of certain organic pollutants from wastewater and is conducive for the development of high-valued biochar modification.
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Affiliation(s)
- Yurong Gao
- Agronomy College, Shenyang Agricultural University, Shenyang, 110866, China; Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, 528000, China; Key Laboratory of Biochar and Soil Improvement, Ministry of Agriculture and Rural Affairs, China
| | - Zheng Fang
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, 528000, China
| | - Wenhui Lin
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, 528000, China
| | - Hanbo Chen
- Agronomy College, Shenyang Agricultural University, Shenyang, 110866, China; Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, 528000, China; Key Laboratory of Biochar and Soil Improvement, Ministry of Agriculture and Rural Affairs, China
| | - Amit Bhatnagar
- Department of Separation Science, LUT School of Engineering Science, LUT University, Sammonkatu 12, FI-50130, Mikkeli, Finland
| | - Jianhong Li
- Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
| | - Yanhai Xie
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, 528000, China
| | - Yanping Bao
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, 528000, China
| | - Junfeng Chen
- School of Life Science, Qufu Normal University, Qufu, 273165, China
| | - Hongting Zhao
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, 528000, China
| | - Jun Meng
- Agronomy College, Shenyang Agricultural University, Shenyang, 110866, China; Key Laboratory of Biochar and Soil Improvement, Ministry of Agriculture and Rural Affairs, China
| | - Wenfu Chen
- Agronomy College, Shenyang Agricultural University, Shenyang, 110866, China; Key Laboratory of Biochar and Soil Improvement, Ministry of Agriculture and Rural Affairs, China
| | - Hailong Wang
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, 528000, China; Guangdong Green Technologies Co., Ltd., Foshan, 528100, China.
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13
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Ma T, Zhang J, Zhang L, Zhang Q, Xu X, Xiong Y, Ying Y, Fu Y. Recent advances in determination applications of emerging films based on nanomaterials. Adv Colloid Interface Sci 2023; 311:102828. [PMID: 36587470 DOI: 10.1016/j.cis.2022.102828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 12/12/2022] [Accepted: 12/22/2022] [Indexed: 12/28/2022]
Abstract
Sensitive and facile detection of analytes is crucial in various fields such as agriculture production, food safety, clinical diagnosis and therapy, and environmental monitoring. However, the synergy of complicated sample pretreatment and detection is an urgent challenge. By integrating the inherent porosity, processability and flexibility of films and the diversified merits of nanomaterials, nanomaterial-based films have evolved as preferred candidates to meet the above challenge. Recent years have witnessed the flourishment of films-based detection technologies due to their unique porous structures and integrated physical/chemical merits, which favors the separation/collection and detection of analytes in a rapid, efficient and facile way. In particular, films based on nanomaterials consisting of 0D metal-organic framework particles, 1D nanofibers and carbon nanotubes, and 2D graphene and analogs have drawn increasing attention due to incorporating new properties from nanomaterials. This paper summarizes the progress of the fabrication of emerging films based on nanomaterials and their detection applications in recent five years, focusing on typical electrochemical and optical methods. Some new interesting applications, such as point-of-care testing, wearable devices and detection chips, are proposed and emphasized. This review will provide insights into the integration and processability of films based on nanomaterials, thus stimulate further contributions towards films based on nanomaterials for high-performance analytical-chemistry-related applications.
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Affiliation(s)
- Tongtong Ma
- College of Biosystems Engineering and Food Science, Key Laboratory of Intelligent Equipment and Robotics for Agriculture of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Jie Zhang
- College of Biosystems Engineering and Food Science, Key Laboratory of Intelligent Equipment and Robotics for Agriculture of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Lin Zhang
- College of Biosystems Engineering and Food Science, Key Laboratory of Intelligent Equipment and Robotics for Agriculture of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Qi Zhang
- College of Biosystems Engineering and Food Science, Key Laboratory of Intelligent Equipment and Robotics for Agriculture of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Xiahong Xu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
| | - Yonghua Xiong
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Yibin Ying
- College of Biosystems Engineering and Food Science, Key Laboratory of Intelligent Equipment and Robotics for Agriculture of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Yingchun Fu
- College of Biosystems Engineering and Food Science, Key Laboratory of Intelligent Equipment and Robotics for Agriculture of Zhejiang Province, Zhejiang University, Hangzhou 310058, China.
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14
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Han Y, Tao J, Khan A, Ullah R, Ali N, Ali N, Malik S, Yu C, Yang Y, Bilal M. Design and fabrication of chitosan cross-linked bismuth sulfide nanoparticles for sequestration of mercury in river water samples. ENVIRONMENTAL RESEARCH 2022; 215:113978. [PMID: 35985490 DOI: 10.1016/j.envres.2022.113978] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 07/21/2022] [Accepted: 07/21/2022] [Indexed: 06/15/2023]
Abstract
The existence of heavy metals in ecological systems poses great threats to living organisms due to their toxicant and bio-accumulating properties. Mercury is a known toxicant with notable malignant impacts. It has long been known to cause toxic threats to the health of living organisms since the break out of Minamata disease. The turbulent expulsion of mercury-based pollutants from the industrial sector, requires a proper solution. Many attempts have been made to design a greener and more efficient route for a satisfactory removal of mercury. In the current study, bismuth sulfide nanoparticles (BiSNPs) have been synthesized via the co-precipitation method. The BiSNPs were supported with crosslinked chitosan to enhance their sorption capacity and avoid leaching. The average size of the BiSNPs was 42 nm based on SEM micrographs. The SEM analysis of the bismuth sulfide chitosan-crosslinked beads (BiS-CB) showed that the beads possessed a spherical and smooth morphology with a size of 1.02 mm. The FTIR analysis showed that the beads possessed the characteristics bands of imine groups of chitosan, bismuth, sulfur, and glycosidic linkages present in the molecules. The XRD analysis confirmed the phase crystallinity of the BiS-CB with an average crystallite size of 11 nm. The BiS-CB was employed for the sorption of mercury from water samples. The maximum sorption capacity of 65.51 mg/g was achieved at optimized conditions of pH 5, concentration 80 ppm, in 45 min at 30 °C. The mechanism studied for mercury removal showed that sorption followed the complexation mechanism according to the SHAB concept. In conclusion, the results showed that the BiS-CB sorbent exhibited an excellent sorption capacity to remove mercury.
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Affiliation(s)
- Yonghong Han
- School of Pharmacy and Traditional Chinese Medicine, Jiangsu College of Nursing, Huaian, Jiangsu, 223005, PR China.
| | - Juan Tao
- School of Pharmacy and Traditional Chinese Medicine, Jiangsu College of Nursing, Huaian, Jiangsu, 223005, PR China
| | - Adnan Khan
- Institute of Chemical Sciences, University of Peshawar, Khyber Pakhtunkhwa, 25120, Pakistan
| | - Rizwan Ullah
- Institute of Chemical Sciences, University of Peshawar, Khyber Pakhtunkhwa, 25120, Pakistan
| | - Nisar Ali
- Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huai'an, 223003, China
| | - Nauman Ali
- Institute of Chemical Sciences, University of Peshawar, Khyber Pakhtunkhwa, 25120, Pakistan
| | - Sumeet Malik
- Institute of Chemical Sciences, University of Peshawar, Khyber Pakhtunkhwa, 25120, Pakistan
| | - Chunhao Yu
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Department of Pharmaceutical Engineering, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huaian, 223003, China
| | - Yong Yang
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Department of Pharmaceutical Engineering, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huaian, 223003, China
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huai'an, 223003, China.
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15
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Zhou Y, Zeng Z, Guo Y, Zheng X. Selective adsorption of Hg(ii) with diatomite-based mesoporous materials functionalized by pyrrole-thiophene copolymers: condition optimization, application and mechanism. RSC Adv 2022; 12:33160-33174. [PMID: 36425157 PMCID: PMC9673902 DOI: 10.1039/d2ra05938j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 11/03/2022] [Indexed: 11/29/2023] Open
Abstract
A novel diatomite-based mesoporous material of MCM-41/co-(PPy-Tp) was prepared with MCM-41 as carrier and functionalized with the copolymer of pyrrole and thiophene. The physicochemical characteristics of the as-prepared materials were characterized by various characterization means. The removal behaviour of Hg(ii) was adequately investigated via series of single factor experiments and some vital influence factors were optimized via response surface methodology method. The results exhibit that diatomite-based materials MCM-41/co-(PPy-Tp) has an optimal adsorption capability of 537.15 mg g-1 towards Hg(ii) at pH = 7.1. The removal process of Hg(ii) onto MCM-41/co-(PPy-Tp) is controlled by monolayer chemisorption based on the fitting results of pseudo-second-order kinetic and Langmuir models. In addition, the adsorption of Hg(ii) ions onto MCM-41/co-(PPy-Tp) is mainly completed through forming a stable complex with N or S atoms in MCM-41/co-(PPy-Tp) by electrostatic attraction and chelation. The as-developed MCM-41/co-(PPy-Tp) displays excellent recyclability and stabilization, has obviously selective adsorption for Hg(ii) in the treatment of actual electroplating wastewater. Diatomite-based mesoporous material functionalized by the copolymer of pyrrole and thiophene exhibits promising application prospect.
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Affiliation(s)
- Yu Zhou
- Department of Municipal Engineering, Suzhou University of Science and Technology Suzhou 215009 China
| | - Zheng Zeng
- Department of Municipal Engineering, Suzhou University of Science and Technology Suzhou 215009 China
| | - Yongfu Guo
- Department of Municipal Engineering, Suzhou University of Science and Technology Suzhou 215009 China
- Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment Suzhou 215009 Jiangsu China
| | - Xinyu Zheng
- Department of Municipal Engineering, Suzhou University of Science and Technology Suzhou 215009 China
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16
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Zhao H, Huang J, Huang L, Yang Y, Xiao Z, Chen Q, Huang Q, Ai K. Surface control approach for growth of cerium oxide on flower-like molybdenum disulfide nanosheets enables superior removal of uremic toxins. J Colloid Interface Sci 2022; 630:855-865. [DOI: 10.1016/j.jcis.2022.10.142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 10/17/2022] [Accepted: 10/27/2022] [Indexed: 11/06/2022]
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17
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Analogize of metal-organic frameworks (MOFs) adsorbents functional sites for Hg2+ ions removal. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121471] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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18
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Li P, Huang J, Gao C, Xu G, Wang G, Zhang B, Duan C. Effective and reusable 3D Cu xS nanocluster structured magnetic adsorbent for mercury extraction from wastewater. CHEMOSPHERE 2022; 301:134818. [PMID: 35513077 DOI: 10.1016/j.chemosphere.2022.134818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 04/24/2022] [Accepted: 04/29/2022] [Indexed: 06/14/2023]
Abstract
The elimination of mercury from polluted water using an effective, cost-economic, and sustainable method was investigated in this work. A modulated multilayer magnetic Hg2+ extractor was prepared with a self-assembly engineering that permitting robust anchoring and uniform distribution of the negatively charged 3D CuxS nanocluster onto a polydopamine (PDA) covered positively strengthened Fe3O4 surface. The developed PAD@Fe3O4 supported copper sulfide composite (CuxS/PAD@Fe3O4) presented an unparalleled Hg2+ uptake performance with adsorption capacity of 1394.61 mg/g (without saturation), and extraordinary selectivity with distribution coefficient value Kd of 17419.2 mL/g. A complexation reaction during Hg2+ affinity was taken place on CuxS/PAD@Fe3O4 surface, and almost no components losses occurring during the adsorption. Furthermore, the as-prepared CuxS/PAD@Fe3O4 micron-adsorbent can be easily magnetic recovery and recycled with hydrochloric acid elution. The purification of 50 L Hg2+ containing wastewater, initial concentration of 20 μg/L can be achieved with CuxS/PAD@Fe3O4 dosage of 0.1 g and treatment cost of 0.077 US $. The outlet Hg2+ concentration met drinking water standard of the United States Environmental Protection Agency. The CuxS/PAD@Fe3O4 magnetic adsorbent can be fabricated cheaply and holds promise for scale-up applications.
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Affiliation(s)
- Peng Li
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou City, Jiangsu, 221008, PR China.
| | - Jiu Huang
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou City, Jiangsu, 221008, PR China
| | - Chen Gao
- School of Water Resource & Environmental Engineering, East China University of Technology, Nanchang City, Jiangxi, 330013, PR China
| | - Guiyin Xu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Guanghui Wang
- School of Water Resource & Environmental Engineering, East China University of Technology, Nanchang City, Jiangxi, 330013, PR China
| | - Bo Zhang
- School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou City, Jiangsu, 221008, PR China
| | - Chenglong Duan
- School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou City, Jiangsu, 221008, PR China
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19
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López YC, Ortega GA, Reguera E. Hazardous ions decontamination: From the element to the material. CHEMICAL ENGINEERING JOURNAL ADVANCES 2022. [DOI: 10.1016/j.ceja.2022.100297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
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20
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Yang Y, Ali A, Su J, Chang Q, Xu L, Su L, Qi Z. Phenol and 17β-estradiol removal by Zoogloea sp. MFQ7 and in-situ generated biogenic manganese oxides: Performance, kinetics and mechanism. JOURNAL OF HAZARDOUS MATERIALS 2022; 429:128281. [PMID: 35066225 DOI: 10.1016/j.jhazmat.2022.128281] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 12/22/2021] [Accepted: 01/12/2022] [Indexed: 06/14/2023]
Abstract
The pollution of multifarious pollutants such as heavy metal, organic compounds, and nitrate are a hot research topic at present. In this study, the functions of Zoogloea sp. MFQ7 and its biological precipitation formed during bacterial manganese oxidation on the removal of phenol and 17β-estradiol (E2) were investigated. Strain MFQ7, a manganese-oxidizing bacteria, can remove 98.34% of phenol under pH of 7.1, a temperature of 30 ℃ and Mn2+ concentration of 24.34 mg L-1, additionally, the optimum E2 removal by strain MFQ7 was 100.00% at pH of 7.1, temperature of 28 ℃ and Mn2+ concentration of 28.45 mg L-1 by using response surface methodology (RSM) based on Box-Behnken design (BBD) model. The maximum adsorption capacity of bio-precipitation for phenol and E2 was 201.15 mg g-1 and 65.90 mg g-1, respectively. Furthermore, adsorption kinetics and isotherms analysis, XPS, FTIR spectra, Mn(III) trapping experiments elucidated chemical adsorption and Mn(III) oxidation contribute to the removal of phenol and E2 by biogenic manganese oxides. These findings indicated that the adsorption and oxidation of manganese are expected to be one of the effective means to remove these typical organic pollutants containing phenol and E2.
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Affiliation(s)
- Yuzhu Yang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Amjad Ali
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Junfeng Su
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.
| | - Qiao Chang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Liang Xu
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Lindong Su
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Xi'an Yiwei Putai Environmental Protection Company Limited, Xi'an 710055, China
| | - Zening Qi
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Xi'an Yiwei Putai Environmental Protection Company Limited, Xi'an 710055, China
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21
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Wang Z, Jia Y, Liu X, Liao L, Wang Z, Wang Z. Removal of boron in desalinated seawater by magnetic metal-organic frame-based composite materials: Modeling and optimizing based on methodologies of response surface and artificial neural network. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118090] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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22
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Köse K, Tüysüz M, Aksüt D, Uzun L. Modification of cyclodextrin and use in environmental applications. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:182-209. [PMID: 34212318 DOI: 10.1007/s11356-021-15005-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 06/14/2021] [Indexed: 05/27/2023]
Abstract
Water pollution, which has become a global problem in parallel with environmental pollution, is a problem that needs to be solved urgently, considering the gradual depletion of water resources. The inadequacy of the water treatment methods and the materials used somehow directed the researchers to look for dual character structures such as biocompatible and biodegradable β-cyclodextrin (β-CD). β-CD, which is normally insoluble in water, is used in demanding wastewater applications by being modified with the help of different agents to be water soluble or transformed into polymeric adsorbents as a result of co-polymerization via cross-linkers. In this way, in addition to the host-guest interactions offered by β-CD, secondary forces arising from these interactions provide advantages in terms of regeneration and reusability. However, the adsorption efficiency and synthesis steps need to be improved. Based on the current studies presented in this review, in which cross-linkers and modification methods are also mentioned, suggestions for novel synthesis methods of new-generation β-CD-based materials, criticisms, and recent methods of removal of micropollutants such as heavy metals, industrial dyes, harmful biomolecules, and pharmaceutics wastes are mentioned.
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Affiliation(s)
- Kazım Köse
- Department of Joint Courses, Hitit University, 19040, Çorum, Turkey.
| | - Miraç Tüysüz
- Department of Chemistry, Faculty of Science, Hacettepe University, Ankara, Turkey
| | - Davut Aksüt
- Department of Chemistry, Faculty of Science, Hacettepe University, Ankara, Turkey
| | - Lokman Uzun
- Department of Chemistry, Faculty of Science, Hacettepe University, Ankara, Turkey
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23
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Santucci V, Fiore S. Recovery of Waste Polyurethane from E-Waste. Part II. Investigation of the Adsorption Potential for Wastewater Treatment. MATERIALS (BASEL, SWITZERLAND) 2021; 14:7587. [PMID: 34947183 PMCID: PMC8704397 DOI: 10.3390/ma14247587] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 11/25/2021] [Accepted: 12/06/2021] [Indexed: 12/04/2022]
Abstract
This study explored the performances of waste polyurethane foam (PUF) derived from the shredding of end-of-life refrigerators as an adsorbent for wastewater treatment. The waste PUF underwent a basic pre-treatment (e.g., sieving and washing) prior the adsorption tests. Three target pollutants were considered: methylene blue, phenol, and mercury. Adsorption batch tests were performed putting in contact waste PUF with aqueous solutions of the three pollutants at a solid/liquid ratio equal to 25 g/L. A commercial activated carbon (AC) was considered for comparison. The contact time necessary to reach the adsorption equilibrium was in the range of 60-140 min for waste PUF, while AC needed about 30 min. The results of the adsorption tests showed a better fit of the Freundlich isotherm model (R2 = 0.93 for all pollutants) compared to the Langmuir model. The adsorption capacity of waste PUF was limited for methylene blue and mercury (Kf = 0.02), and much lower for phenol (Kf = 0.001). The removal efficiency achieved by waste PUF was lower (phenol 12% and methylene blue and mercury 37-38%) compared to AC (64-99%). The preliminary results obtained in this study can support the application of additional pre-treatments aimed to overcome the adsorption limits of the waste PUF, and it could be applied for "rough-cut" wastewater treatment.
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Affiliation(s)
| | - Silvia Fiore
- Department of Engineering for Environment, Land, and Infrastructures (DIATI), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy;
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24
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Sun Y, Li D, Lu X, Sheng J, Zheng X, Xiao X. Flocculation of combined contaminants of dye and heavy metal by nano-chitosan flocculants. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 299:113589. [PMID: 34467861 DOI: 10.1016/j.jenvman.2021.113589] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 08/15/2021] [Accepted: 08/20/2021] [Indexed: 06/13/2023]
Abstract
In this study, two multifunctional nano-chitosan flocculants (CPAM-NCS1 and CPAM-NCS2) were made through the graft modification of cationic monomer and carboxymethylchitosan (CMCTS) to remove combined contaminants. The effects of various factors (pH, flocculant dosage and hydraulic mixing conditions) on the flocculation performance under single and composite pollution conditions were systematically investigated, the optimal chemical oxygen demand (COD) and the chromaticity removal rates in the dye wastewater were 79.9% and 83.9% at wastewater pH 7, the fast stirring rate 300 rpm, the fast stirring time 8 min, and the dosage of CPAM-NCS1 80 mg/L, respectively. The optimal removal rates of Cu (II) obtained by CPAM-NCS1 and CPAM-NCS2 at were 80.3% and 75.2% at 60 mg/L and the wastewater pH 7, respectively. The optimal removal rates of Cu (II) and disperse orange were 85.3% and 89.4%, respectively, in a composite pollutant system in which Cu (II) and disperse orange coexisted when the pH of the composite system was 9 and the dosage of CPAM -NCS1 was 60 mg/L. This study proved that nanoflocculants made by modifying CMCTS with different structures can demonstrate ideal flocculation removal performance for dye and heavy metal wastewaters.
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Affiliation(s)
- Yongjun Sun
- College of Urban Construction, Nanjing Tech University, Nanjing, 211800, China.
| | - Deng Li
- College of Urban Construction, Nanjing Tech University, Nanjing, 211800, China
| | - Xi Lu
- Jiangsu Key Laboratory of Industrial Water-Conservation & Emission Reduction, College of Environment, Nanjing Tech University, Nanjing, 211800, China
| | - Jinwei Sheng
- College of Urban Construction, Nanjing Tech University, Nanjing, 211800, China
| | - Xing Zheng
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Xuefeng Xiao
- College of Urban Construction, Nanjing Tech University, Nanjing, 211800, China
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25
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Chang Q, Ali A, Su J, Wen Q, Bai Y, Gao Z. Simultaneous removal of nitrate, manganese, and tetracycline by Zoogloea sp. MFQ7: Adsorption mechanism of tetracycline by biological precipitation. BIORESOURCE TECHNOLOGY 2021; 340:125690. [PMID: 34352640 DOI: 10.1016/j.biortech.2021.125690] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 06/13/2023]
Abstract
A Mn(II) oxidizing-denitrifying and tetracycline (TC) removal bacterium Zoogloea sp. MFQ7 was isolated in this study. Nitrogen removal was 83.49% by nitrogen balance experiment. The maximum removal efficiencies of nitrate, Mn(II), and TC by strain MFQ7 within 96 h was 100.00, 74.56, and 63.59% at C/N of 2.0, pH of 7.0, Mn(II) of 20 mg L-1, temperature of 30.0 °C, and TC of 0.2 mg L-1. SEM illustrated that biogenic manganese oxides (BMO) was petal-like, XRD and XPS analyses confirmed that MnO2 was the main component of BMO. Besides, the maximum adsorption capacity of BMO for TC was 52.21 mg g-1. FTIR detected the changes in TC adsorption by BMO. Pseudo-second-order model (R2 = 0.994) explained the adsorption kinetics of TC on BMO and Langmuir isotherm model (R2 = 0.983) suggested that it was homogeneous adsorption, thermodynamics data (ΔG < 0, ΔH = 18.31 kJ mol-1, ΔS = 72.8 J (mol*K)-1) confirmed that adsorption was endothermic and spontaneous.
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Affiliation(s)
- Qiao Chang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Amjad Ali
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Junfeng Su
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.
| | - Qiong Wen
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Yihan Bai
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Zhihong Gao
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
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26
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Shao H, Yin D, Li D, Ma Q, Yu W, Dong X. Simultaneous Visual Detection and Removal of Cu 2+ with Electrospun Self-Supporting Flexible Amidated Polyacrylonitrile/Branched Polyethyleneimine Nanofiber Membranes. ACS APPLIED MATERIALS & INTERFACES 2021; 13:49288-49300. [PMID: 34632771 DOI: 10.1021/acsami.1c13722] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Sensitive detection and effective removal of copper ions (Cu2+) from water are still arduous tasks required to protect public health and environmental safety because of the serious impacts of Cu2+ on humans and other organisms. Herein, we report the design and fabrication of self-supporting flexible amidated polyacrylonitrile/branched polyethyleneimine nanofiber membranes (abbreviated as aPAN/BPEI NMs) via facile electrospinning and a subsequent hydrothermal method, which are used not only as strips for the visual detection of Cu2+ but also as effective adsorbents for the removal of Cu2+ from water. Because aPAN/BPEI NMs are self-supporting, they can be easily removed from the solution to reduce secondary pollution to the environment. Based on the high Cu2+ binding capacity of BPEI, Cu2+ ions are adsorbed on the aPAN/BPEI NMs, which leads to the appearance of new absorbance bands at 280 and 636 nm and a color change from yellow to blue. aPAN/BPEI NMs are utilized for the visual detection of Cu2+ with a linear range of 50-700 μM and limits of detection of 11.5 and 4.8 μM (absorption peaks at 280 and 636 nm). More importantly, aPAN/BPEI NMs exhibit excellent selectivity and certain recovery with a simple treatment. Furthermore, by utilizing the adsorption characteristics of Cu2+ in aqueous media, it can be effectively removed by aPAN/BPEI NMs with a remarkable adsorption capacity of 209.53 mg·g-1. Additionally, the removal of Cu2+ by aPAN/BPEI NMs does not exhibit interference by other foreign ions. The adsorption process conforms well to the pseudo-second order (PSO) kinetic model and Jovanovich model, proving that adsorption occurs via chemical and monolayer adsorption mechanisms. Accordingly, this work will provide theoretical and technical support for the design and fabrication of novel heavy metal ion detection-removal integrated materials exhibiting high sensitivity and strong adsorption.
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Affiliation(s)
- Hong Shao
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022, P. R. China
| | - Duanduan Yin
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022, P. R. China
| | - Dan Li
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022, P. R. China
| | - Qianli Ma
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022, P. R. China
| | - Wensheng Yu
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022, P. R. China
| | - Xiangting Dong
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022, P. R. China
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27
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Dai X, Zhou X, Liu H, Wang T, Zhang Y, Zhang H, Sun B. Molecular-level insights into the immobilization of vapor-phase mercury on Fe/Co/Ni-doped hierarchical molybdenum selenide. JOURNAL OF HAZARDOUS MATERIALS 2021; 420:126583. [PMID: 34252656 DOI: 10.1016/j.jhazmat.2021.126583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 06/18/2021] [Accepted: 07/03/2021] [Indexed: 06/13/2023]
Abstract
A novel and efficient adsorbent (TM-MoSe2, TM = Fe, Co, Ni) for mercury removal was developed and studied. The adsorption of mercury species (Hg0, HgCl, and HgCl2) and the oxidation of Hg0 by HCl on TM-MoSe2 (001) surface were explored at molecular level by density functional theory (DFT). The results shown that the Hg0 adsorption capacity of MoSe2 was improved by the doping of Fe/Co/Ni, which was also confirmed by experiments. The initial Hg0 removal efficiency of MoSe2-based adsorbents reached 96.4-100.0%. In addition, HgCl was mainly adsorbed on TM-MoSe2 (001) surface in the form of dissociation. The escape of Hg atom from HgCl resulted in the release of Hg0 again. However, HgCl2 could be fixed well on the surface of adsorbent through molecular adsorption or dissociative adsorption. For the oxidation process of Hg0 by HCl, it abided with the Langmuir-Hinshelwood mechanism. In comparison with direct oxidation (Hg → HgCl2), two-step pathway (Hg → HgCl → HgCl2) was an achievable reaction route with lower energy. Furthermore, the Hg → HgCl process was the rate-limiting step of the two-step pathway. The proposed adsorption and oxidation mechanism of mercury species on TM-MoSe2 (001) provide advanced strategies on the development of adsorbents for industrial mercury removal.
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Affiliation(s)
- Xuekun Dai
- Key Laboratory of Power Station Energy Transfer Conversion and System, Ministry of Education, North China Electric Power University, Beijing 102206, PR China
| | - Xishan Zhou
- Key Laboratory of Power Station Energy Transfer Conversion and System, Ministry of Education, North China Electric Power University, Beijing 102206, PR China
| | - Hanzi Liu
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, PR China
| | - Tao Wang
- Key Laboratory of Power Station Energy Transfer Conversion and System, Ministry of Education, North China Electric Power University, Beijing 102206, PR China
| | - Yongsheng Zhang
- Key Laboratory of Power Station Energy Transfer Conversion and System, Ministry of Education, North China Electric Power University, Beijing 102206, PR China
| | - Huicong Zhang
- Key Laboratory of Power Station Energy Transfer Conversion and System, Ministry of Education, North China Electric Power University, Beijing 102206, PR China.
| | - Baomin Sun
- Key Laboratory of Power Station Energy Transfer Conversion and System, Ministry of Education, North China Electric Power University, Beijing 102206, PR China
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28
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Yadav N, Garg VK, Chhillar AK, Rana JS. Detection and remediation of pollutants to maintain ecosustainability employing nanotechnology: A review. CHEMOSPHERE 2021; 280:130792. [PMID: 34162093 DOI: 10.1016/j.chemosphere.2021.130792] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 04/27/2021] [Accepted: 04/30/2021] [Indexed: 06/13/2023]
Abstract
Environmental deterioration due to anthropogenic activities is a threat to sustainable, clean and green environment. Accumulation of hazardous chemicals pollutes soil, water and air and thus significantly affects all the ecosystems. This article highlight the challenges associated with various conventional techniques such as filtration, absorption, flocculation, coagulation, chromatographic and mass spectroscopic techniques. Environmental nanotechnology has provided an innovative frontier to combat the aforesaid issues of sustainable environment by reducing the non-requisite use of raw materials, electricity, excessive use of agrochemicals and release of industrial effluents into water bodies. Various nanotechnology based approaches including surface enhance scattering, surface plasmon resonance; and distinct types of nanoparticles like silver, silicon oxide and zinc oxide have contributed significantly in detection of environmental pollutants. Biosensing technology has also gained significant attention for detection and remediation of pollutants. Furthermore, nanoparticles of gold, ferric oxide and manganese oxide have been used for the on-site remediation of antibiotics, organic dyes, pesticides, and heavy metals. Recently, green nanomaterials have been given more attention to address toxicity issues of chemically synthesized nanomaterials. Hence, nanotechnology has provided a platform with tremendous applications to have sustainable environment for present as well as future generations. This review article will help to understand the fundamentals for achieving the goals of sustainable development, and healthy environment.
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Affiliation(s)
- Neelam Yadav
- Department of Biotechnology, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Sonepat, Haryana, 131039, India; Centre for Biotechnology, Maharshi Dayanand University, Rohtak, Haryana, 124001, India.
| | - Vinod Kumar Garg
- Department of Environmental Science and Technology, Central University of Punjab, Bathinda, Punjab, 151001, India.
| | - Anil Kumar Chhillar
- Centre for Biotechnology, Maharshi Dayanand University, Rohtak, Haryana, 124001, India
| | - Jogender Singh Rana
- Department of Biotechnology, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Sonepat, Haryana, 131039, India
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29
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Gao Y, Xu S, Liu Z, Yu K, Pan X. Dual-Emission Fluorescence Probe Based on CdTe Quantum Dots and Rhodamine B for Visual Detection of Mercury and Its Logic Gate Behavior. MICROMACHINES 2021; 12:713. [PMID: 34207022 PMCID: PMC8234752 DOI: 10.3390/mi12060713] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/15/2021] [Accepted: 06/16/2021] [Indexed: 01/14/2023]
Abstract
It is urgent that a convenient and sensitive technique of detecting Hg2+ be developed because of its toxicity. Conventional fluorescence analysis works with a single fluorescence probe, and it often suffers from signal fluctuations which are influenced by external factors. In this research, a novel dual-emission probe assembled through utilizing CdTe quantum dots (QDs) and rhodamine B was designed to detect Hg2+ visually. Only the emission of CdTe QDs was quenched after adding Hg2+ in the dual-emission probe, which caused an intensity ratio change of the two different emission wavelengths and hence facilitated the visual detection of Hg2+. Compared to single emission QDs-based probe, a better linear relationship was shown between the variation of fluorescence intensity and the concentration of Hg2+, and the limit of detection (LOD) was found to be11.4 nM in the range of 0-2.6 μM. Interestingly, the intensity of the probe containing Hg2+ could be recovered in presence of glutathione (GSH) due to the stronger binding affinity of Hg2+ towards GSH than that towards CdTe QDs. Based on this phenomenon, an IMPLICATION logic gate using Hg2+/GSH as inputs and the fluorescence signal of QDs as an output was constructed.
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Affiliation(s)
- Yuefeng Gao
- College of Marine Engineering, Dalian Maritime University, Dalian 116026, China; (Y.G.); (Z.L.); (K.Y.)
| | - Sai Xu
- School of Science, Dalian Maritime University, Dalian 116026, China
| | - Zhijian Liu
- College of Marine Engineering, Dalian Maritime University, Dalian 116026, China; (Y.G.); (Z.L.); (K.Y.)
| | - Kezhen Yu
- College of Marine Engineering, Dalian Maritime University, Dalian 116026, China; (Y.G.); (Z.L.); (K.Y.)
| | - Xinxiang Pan
- College of Marine Engineering, Dalian Maritime University, Dalian 116026, China; (Y.G.); (Z.L.); (K.Y.)
- Maritime College, Guangdong Ocean University, Zhanjiang 524088, China
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30
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Zhu W, Yang Z, Yasin A, Liu Y, Zhang L. Preparation of Poly(acrylic acid-acrylamide/starch) Composite and Its Adsorption Properties for Mercury (II). MATERIALS 2021; 14:ma14123277. [PMID: 34198504 PMCID: PMC8231955 DOI: 10.3390/ma14123277] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/04/2021] [Accepted: 06/09/2021] [Indexed: 01/31/2023]
Abstract
The poly(acrylic acid-acrylamide/starch) composite was synthesized by solution polymerization, aiming to adsorb mercury (II) in water. The resulted copolymer was characterized by particle size exclusion chromatography (SEC), Fourier transform infrared spectroscopy (FTIR), thermogravimetry (TG), scanning electron microscopy (SEM) and dynamic light scattering particle size analyzer (DLS). It turned out that starch was successfully incorporated with the macromolecular polymer matrix and played a key role for improving the performance of the composites. These characterization results showed that the graft copolymer exhibited narrow molecular weight distribution, rough but uniform morphology, good thermal stability and narrow particle size distribution. The graft copolymer was used to remove Hg(II) ions from aqueous solution. The effects of contact time, pH value, initial mercury (II) concentration and temperature on the adsorption capacity of Hg(II) ions were researched. It was found that after 120 min of interaction, poly(acrylic acid-acrylamide/starch) composite achieved the maximum adsorption capacity of 19.23 mg·g−1 to Hg(II) ions with initial concentration of 15 mg·L−1, pH of 5.5 at 45 °C. Compared with other studies with the same purpose, the composites synthesized in this study present high adsorption properties for Hg(II) ion in dilute solution. The adsorption kinetics of Hg(II) on the poly(acrylic acid-acrylamide/starch) composite fits well with the pseudo second order model.
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Affiliation(s)
- Wenjuan Zhu
- School of Chemical and Environmental Engineering, Xinjiang University of Engineering, Urumqi 830026, China; (Z.Y.); (L.Z.)
- Correspondence:
| | - Zhiyong Yang
- School of Chemical and Environmental Engineering, Xinjiang University of Engineering, Urumqi 830026, China; (Z.Y.); (L.Z.)
| | - Akram Yasin
- Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China; (A.Y.); (Y.L.)
| | - Yanxia Liu
- Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China; (A.Y.); (Y.L.)
| | - Letao Zhang
- School of Chemical and Environmental Engineering, Xinjiang University of Engineering, Urumqi 830026, China; (Z.Y.); (L.Z.)
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