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Xie T, Wang Y, Zhang Q, Shen S, Guo W, Chen X, Wang Q, Qu L, Li C. Wood aerogels decorated amino-functionalized MIL-101(Cr) as efficient filter for multistage purification of wastewater. CHEMOSPHERE 2024; 350:141052. [PMID: 38160956 DOI: 10.1016/j.chemosphere.2023.141052] [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: 04/27/2023] [Revised: 12/10/2023] [Accepted: 12/26/2023] [Indexed: 01/03/2024]
Abstract
Exploring novel water purifier to efficiently remove heavy metal ions from the wastewater is of vital importance. Inspired by the hierarchical structure of natural wood and the chelation of amino group, a high-efficiency water purifier with ethylenediamine functionalized MIL-101(Cr) octahedrons anchored on the wood aerogel (MIL-101(Cr)-ED/WA) was constructed. Benefiting from the two-pronged approach with the hierarchical structure of the wood aerogel frame for multistage filtration and the -NH2 that capable of chelation with metal ions, the fabricated MIL-101(Cr)-ED/WA exhibits excellent water purification performances, and its adsorption capacity of toxic Pb2+ ions could reach up to 6.46 mmol g-1. Furthermore, it demonstrates superior recyclability without secondary pollution and is also suitable for simultaneous treatment of multiple metal species. In general, this work will broaden the utilization of wood-based structural engineering materials in the treatment of heavy metal wastewater.
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Affiliation(s)
- Tingting Xie
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang Province, 311300, PR China
| | - Yuanyuan Wang
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang Province, 311300, PR China
| | - Qian Zhang
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang Province, 311300, PR China
| | - Shunyu Shen
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang Province, 311300, PR China
| | - Weijia Guo
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang Province, 311300, PR China
| | - Xin Chen
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang Province, 311300, PR China
| | - Qian Wang
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang Province, 311300, PR China
| | - Lijie Qu
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang Province, 311300, PR China.
| | - Caicai Li
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang Province, 311300, PR China.
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2
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Li T, Xu H, Zhang Y, Zhang H, Hu X, Sun Y, Gu X, Luo J, Zhou D, Gao B. Treatment technologies for selenium contaminated water: A critical review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 299:118858. [PMID: 35041898 DOI: 10.1016/j.envpol.2022.118858] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 01/11/2022] [Accepted: 01/13/2022] [Indexed: 06/14/2023]
Abstract
Selenium is an indispensable trace element for humans and other organisms; however, excessive selenium in water can jeopardize the aquatic environment. Investigations on the biogeochemical cycle of selenium have shown that anthropogenic activities such as mining, refinery, and coal combustion mainly contribute to aquatic selenium pollution, imposing tremendous risks on ecosystems and human beings. Various technologies thus have been developed recently to treat selenium contaminated water to reduce its environmental impacts. This work provides a critical review on the applications, characteristics, and latest developments of current treatment technologies for selenium polluted water. It first outlines the present status of the characteristics, sources, and toxicity of selenium in water. Selenium treatment technologies are then classified into three categories: 1) physicochemical separation including membrane filtration, adsorption, coagulation/precipitation, 2) redox decontamination including chemical reduction and catalysis, and 3) biological transformation including microbial treatment and constructed wetland. Details of these methods including their overall efficiencies, applicability, advantages and drawbacks, and latest developments are systematically analyzed and compared. Although all these methods are promising in treating selenium in water, further studies are still needed to develop sustainable strategies based on existing and new technologies. Perspectives on future research directions are laid out at the end.
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Affiliation(s)
- Tianxiao Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Hongxia Xu
- Key Laboratory of Surficial Geochemistry of Ministry of Education, School of Earth Sciences and Engineering, Hydrosciences Department, Nanjing University, Nanjing, 210023, People's Republic of China.
| | - Yuxuan Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Hanshuo Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Xin Hu
- State Key Laboratory of Analytical Chemistry for Life Science, Center of Material Analysis and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, People's Republic of China
| | - Yuanyuan Sun
- Key Laboratory of Surficial Geochemistry of Ministry of Education, School of Earth Sciences and Engineering, Hydrosciences Department, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Xueyuan Gu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Jun Luo
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Dongmei Zhou
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Bin Gao
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32611, USA
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Nakakubo K, Nishimura T, Biswas FB, Endo M, Wong KH, Mashio AS, Taniguchi T, Nishimura T, Maeda K, Hasegawa H. Speciation analysis of inorganic selenium in wastewater using a highly selective cellulose-based adsorbent via liquid electrode plasma optical emission spectrometry. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127250. [PMID: 34600387 DOI: 10.1016/j.jhazmat.2021.127250] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 09/13/2021] [Accepted: 09/14/2021] [Indexed: 06/13/2023]
Abstract
Speciation of selenium (Se) is typically carried out using a sophisticated technique such as ICP-MS after preconcentration using an adsorbent; however, the separation and preconcentration of inorganic Se has not been realized in the solutions containing high concentrations of SO42-. A dithiocarbamate-modified cellulose (DMC) was used in this study for the selective extraction and preconcentration of inorganic Se in wastewater, with a portable liquid electrode plasma-optical emission spectrometry (LEP-OES) being employed for quantification. DMC was found to selectively and quantitatively adsorb selenite (SeIV) over a wide range of pH (1.0-8.0); however, less than 3.0% of selenate (SeVI) was adsorbed in a pH range of 3.0-11. Quantitative extraction of SeIV was achieved even in the presence of 3.5 mol L-1 SO42-. The maximum sample volume from which 10 mg of DMC could quantitatively extract SeIV was found to be 500 mL. KOH (0.60 mL, 1.5 mol L-1) was found to quantitatively desorb SeIV retained on the adsorbent and yielded an enrichment factor of 833. The recovery of Se species from synthetic flue-gas desulfurization wastewater containing SeIV and SeVI at concentrations of 5.0 µmol L-1 was 96.2 ± 1.8% and 105.8 ± 1.8%, respectively.
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Affiliation(s)
- Keisuke Nakakubo
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan.
| | - Takashi Nishimura
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Foni B Biswas
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan; Department of Chemistry, Faculty of Science, University of Chittagong, Chittagong 4331, Bangladesh
| | - Masaru Endo
- Daicel Corporation, 1239 Shinzaike, Aboshi-ku, Himeji-Shi, Hyogo 671-1283, Japan
| | - Kuo H Wong
- Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Asami S Mashio
- Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Tsuyoshi Taniguchi
- Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Tatsuya Nishimura
- Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Katsuhiro Maeda
- Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma, Kanazawa 920-1192, Japan.
| | - Hiroshi Hasegawa
- Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan.
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Weber M, Rodriguez RD, Zahn DRT, Stöwe K, Mehring M. Polymorphism and Visible-Light-Driven Photocatalysis of Doped Bi 2O 3:M (M = S, Se, and Re). Inorg Chem 2022; 61:1571-1589. [PMID: 34982539 DOI: 10.1021/acs.inorgchem.1c03330] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
δ-Bi2O3:M (M = S, Se, and Re) with an oxygen-defective fluorite-type structure is obtained by a coprecipitation method starting from the bismuth oxido cluster [Bi38O45(OMc)24(dmso)9]·2dmso·7H2O (A) in the presence of additives such as Na2SO4, Na2SeO4, NH4ReO4, Na2SeO3·5H2O, and Na2SO3. The coprecipitation of the starting materials with aqueous NaOH results in the formation of alkaline reaction mixtures, and the cubic bismuth(III)-based oxides Bi14O20(SO4) (1c), Bi14O20(SeO4) (2c), Bi14O20(ReO4.5) (3c), Bi12.25O16.625(SeO3)1.75 (4c), and Bi10.51O14.765(SO3)0.49(SO4)0.51 (5c) are obtained after microwave-assisted heating; formation of compound 5c is the result of partial oxidation of sulfur. The compounds 1c, 2c, 4c, and 5c absorb UV light only, whereas compound 3c absorbs in the visible-light region of the solar spectrum. Thermal treatment of the as-prepared metastable bismuth(III) oxide chalcogenates 1c and 2c at T = 600 °C provides a monotropic phase transition into their tetragonal polymorphs Bi14O20(SO4) (1t) and Bi14O20(SeO4) (2t), while compound 3c is transformed into the tetragonal modification of Bi14O20(ReO4.5) (3t) after calcination at T = 700 °C. Compounds of the systems Bi2O3-SOx (x = 2 and 3) and Bi2O3-Re2O7 are thermally stable up to T = 800 °C, whereas compounds of the system Bi2O3-SeO3 completely lose SeO3. Thermal treatment of 4c and 5c in air results in the oxidation of the tetravalent to hexavalent sulfur and selenium, respectively, upon heating to T = 400-500 °C. The as-prepared cubic bismuth(III)-based oxides 1c-5c were studied with regard to the photocatalytic decomposition of rhodamine B under visible-light irradiation with compound 3c showing the highest turnover and efficiency.
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Affiliation(s)
- Marcus Weber
- Fakultät für Naturwissenschaften, Institut für Chemie, Professur Koordinationschemie, Technische Universität Chemnitz, Chemnitz 09107, Germany.,Center for Materials, Architectures and Integration of Nanomembranes (MAIN), Technische Universität Chemnitz, Rosenbergstraße 6, Chemnitz 09107, Germany
| | - Raul D Rodriguez
- Fakultät für Naturwissenschaften, Institut für Physik, Professur Halbleiterphysik, Technische Universität Chemnitz, Chemnitz 09107, Germany.,Tomsk Polytechnic University, Lenina avenue 30, 634034 Tomsk, Russia
| | - Dietrich R T Zahn
- Center for Materials, Architectures and Integration of Nanomembranes (MAIN), Technische Universität Chemnitz, Rosenbergstraße 6, Chemnitz 09107, Germany.,Fakultät für Naturwissenschaften, Institut für Physik, Professur Halbleiterphysik, Technische Universität Chemnitz, Chemnitz 09107, Germany
| | - Klaus Stöwe
- Fakultät für Naturwissenschaften, Institut für Chemie, Professur Chemische Technologie, Technische Universität Chemnitz, Chemnitz 09107, Germany
| | - Michael Mehring
- Fakultät für Naturwissenschaften, Institut für Chemie, Professur Koordinationschemie, Technische Universität Chemnitz, Chemnitz 09107, Germany.,Center for Materials, Architectures and Integration of Nanomembranes (MAIN), Technische Universität Chemnitz, Rosenbergstraße 6, Chemnitz 09107, Germany
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5
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Li Q, Wang Y, Xing L, Qi T, Zhang L, Liu J, Zhang S, Ma Y, Wang L. Selenium uptake and simultaneous catalysis of sulfite oxidation in ammonia-based desulfurization. J Environ Sci (China) 2021; 103:207-218. [PMID: 33743903 DOI: 10.1016/j.jes.2020.10.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 10/13/2020] [Accepted: 10/13/2020] [Indexed: 06/12/2023]
Abstract
Accelerating the (NH4)2SO3 oxidation gives rise to the reclaiming of byproduct, while there are secondary environmental risks from reduction of the coexisted selenium species by sulfite. In this study, a bi-functional Co-SBA-15-SH, were synthesized through Co impregnation and sulfhydryl (-SH) decoration, which can simultaneously uptake Se and accelerate sulfite oxidation efficiently. Meanwhile, the adsorption kinetics and migration mechanism of Se species were revealed through characterization and density functional calculations, with maximum adsorption capacity of 223 mg/g. The inhibition of Se0 re-emission and poisonous effect of Se on sulfite oxidation was also investigated. Using the findings of this study, the ammonia desulfurization can be improved by enabling purification of the byproduct and lowering the toxicity of effluent by removing toxic pollutants.
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Affiliation(s)
- Qiangwei Li
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, PR China
| | - Yuguo Wang
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, PR China
| | - Lei Xing
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, PR China
| | - Tieyue Qi
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, PR China
| | - Lin Zhang
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, PR China
| | - Jie Liu
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, PR China
| | - Shihan Zhang
- MOE Key Laboratory of Resources and Environmental Systems Optimization, North China Electric Power University, Beijing, 102206, P.R. China
| | - Yongliang Ma
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China; School of Environment, Tsinghua University, Beijing 100084, China
| | - Lidong Wang
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, PR China.
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6
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Zhang L, Jiang SC, Guan Y. Efficient removal of selenate in water by cationic poly(allyltrimethylammonium) grafted chitosan and biochar composite. ENVIRONMENTAL RESEARCH 2021; 194:110667. [PMID: 33400948 DOI: 10.1016/j.envres.2020.110667] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 12/16/2020] [Accepted: 12/21/2020] [Indexed: 06/12/2023]
Abstract
The discovery of cheap and eco-friendly functional materials for the removal of anionic heavy metal ions is still challenging in the treatment of heavy metal-contaminated water. Herein, a new poly(allyltrimethylammonium) grafted chitosan and biochar composite (PATMAC-CTS-BC) was introduced for the removal of selenate (SeO42-) in water. Results suggest that the PATMAC-CTS-BC showed a rapid removal of SeO42- with efficiency of >97% within 10 min and it followed a pseudo-second-order model. High capacity of SeO42- adsorption by the composite was achieved, with maximum value of 98.99 mg g-1 based on Langmuir model, considerably higher than most of reported adsorbents. The thermodynamic results reflected the spontaneous and exothermic nature of SeO42- adsorption onto the composite. The composite could be applied at a wide initial pH range (2-10) with high removal efficiency of SeO42- because of permanent positive charges of quaternary ammonium groups (=N+-). The removal mechanisms of SeO42- were mainly attributed to electrostatic interactions with =N+- and protonated -NH3+ groups, and redox-complexation interactions with -NH2, -NH-, and -OH groups. Besides SeO42-, the hexavalent chromium (Cr2O72-) was considered as example to further demonstrate the anion removal capability of cationic hydrogel-BC composite. The study outcomes open up new opportunities to efficiently remove anionic heavy metal ions (e.g., SeO42- and Cr2O72-) in water using these materials.
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Affiliation(s)
- Lixun Zhang
- Department of Civil and Environmental Engineering, University of California, Irvine, CA, 92612, United States; Guangdong Provincial Engineering Technology Research Center for Urban Water Cycle and Water Environment Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, PR China
| | - Sunny C Jiang
- Department of Civil and Environmental Engineering, University of California, Irvine, CA, 92612, United States
| | - Yuntao Guan
- Guangdong Provincial Engineering Technology Research Center for Urban Water Cycle and Water Environment Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, PR China.
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Nasiri S, Alizadeh N. Hydroxypropyl-β-cyclodextrin-polyurethane/graphene oxide magnetic nanoconjugates as effective adsorbent for chromium and lead ions. Carbohydr Polym 2021; 259:117731. [PMID: 33673994 DOI: 10.1016/j.carbpol.2021.117731] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 01/26/2021] [Accepted: 01/26/2021] [Indexed: 12/29/2022]
Abstract
In this work, hydroxypropyl-β-cyclodextrin-polyurethane magnetic nanoconjugates/reduced graphene oxide (HPMNPU/GO) supramolecules were prepared. The adsorbent was characterized using FTIR and SEM. The adsorbent was evaluated for its efficiency to remove Cr6+ and Pb2+ from aqueous solutions through batch adsorption studies following a Definitive Screening Design (DSD). Effects of solution pH, contact time, adsorbent dosage, initial metal concentration, ionic strength, GO/NC ratio and temperature on Cr 6+ and Pb 2+ adsorption were investigated. Optimization of the adsorption process was done using a desirability function of the Design Expert V11 software. A good agreement between experimental and predicted data proved the efficiency of this model for prediction of real optimum point. The batch experiments implied that the pseudo-second-order model (lowest sum of square error (SSE) values and correlation coefficients (R2) > 0.999) was better to describe the adsorption kinetics of Cr6+ and Pb2+ onto the HPMNPU/GO.
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Affiliation(s)
- Shohreh Nasiri
- Department of Chemistry, Faculty of Science, University of Guilan, Rasht, P.B. 41335-1914, Iran
| | - Nina Alizadeh
- Department of Chemistry, Faculty of Science, University of Guilan, Rasht, P.B. 41335-1914, Iran.
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Zhao Y, Gai L, Liu H, An Q, Xiao Z, Zhai S. Network interior and surface engineering of alginate-based beads using sorption affinity component for enhanced phosphate capture. Int J Biol Macromol 2020; 162:301-309. [PMID: 32574733 DOI: 10.1016/j.ijbiomac.2020.06.159] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/23/2020] [Accepted: 06/16/2020] [Indexed: 11/27/2022]
Abstract
In order to alleviate the environmental problems caused by excessive discharge of phosphate, an environmental friendly and highly efficient bio-sorbent (SA-La@PEI) for phosphate was fabricated by combing strategies of sorption affinity component mediated and poly(ethylenimine) surface engineering of alginate beads. Various characterization methods like SEM, FTIR, XRD and XPS were adopted to examine the morphology and functional group composition of SA-La@PEI. Through detailed tests, SA-La@PEI exhibited excellent adsorption performance of 121.2 mg/g, which was better than most published materials. More importantly, the outstanding phosphate selectivity of SA-La@PEI was exposed when NO3-, HCO3-, SO42- and Cl- were added to the phosphate solution. Considering the integrated components in composites, both chemical precipitation and electrostatic attraction can be considered as the dominant mechanisms of phosphate adsorption. Totally, as-prepared SA-La@PEI beads might be a promising sorbent for the decontamination of excessive phosphate because of its low-cost, excellent adsorption performance and mechanical strength.
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Affiliation(s)
- Yumeng Zhao
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Lixue Gai
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Hao Liu
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Qingda An
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China.
| | - Zuoyi Xiao
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Shangru Zhai
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China.
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9
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Activating Bi2O3 by ball milling to induce efficiently oxygen vacancy for incorporating iodide anions to form BiOI. Chem Phys 2020. [DOI: 10.1016/j.chemphys.2020.110739] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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10
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Zhao Y, Guo L, Shen W, An Q, Xiao Z, Wang H, Cai W, Zhai S, Li Z. Function integrated chitosan-based beads with throughout sorption sites and inherent diffusion network for efficient phosphate removal. Carbohydr Polym 2019; 230:115639. [PMID: 31887964 DOI: 10.1016/j.carbpol.2019.115639] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 10/15/2019] [Accepted: 11/17/2019] [Indexed: 10/25/2022]
Abstract
A novel, cost-effective and biomass-derived adsorbent was fabricated by coating polydopamine on lanthanum-chitosan hydrogel (La-CS@PDA), which were endowed with a plentiful of amine groups. The diffusion structure of channel-network of La-CS@PDA made it well used in phosphate removal in wastewater treatment. The Langmuir isotherm delivered the maximal adsorption capacity about 195.3 mg/g, which was superior to most reported phosphate removal materials. More significantly, in the presence of competitive anions Cl-, SO42-, HCO3-, NO3-, F- and HCrO4-, the resultant La-CS@PDA still conducted distinct selectivity for phosphate, which could be attributed to the selective binding sites of La species in the composite. Under continuous adsorption, the dynamic experimental data fitted well with Thomas model which imitates industrial practical application. By virtue of more fortes of high efficiency, ease of separation and expectable mechanical strength, as-prepared La-CS@PDA might be a promising candidate of dephosphorizing sorbent.
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Affiliation(s)
- Yumeng Zhao
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Lin Guo
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Wei Shen
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Qingda An
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China.
| | - Zuoyi Xiao
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Haisong Wang
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Weijie Cai
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Shangru Zhai
- Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China.
| | - Zhongcheng Li
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
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11
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Lu M, Li L, Shen S, Chen D, Han W. Highly efficient removal of Pb2+ by a sandwich structure of metal–organic framework/GO composite with enhanced stability. NEW J CHEM 2019. [DOI: 10.1039/c8nj05091k] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sandwich-structured MIL-101(Fe)/GO was successfully synthesized by a one-step hydrothermal method, and exhibited a high adsorption capacity and fast adsorption kinetics.
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Affiliation(s)
- Mengjie Lu
- Jilin Supercapacitor Engineering Laboratory
- College of Physics
- Jilin University
- Changchun 130012
- P. R. China
| | - La Li
- Jilin Supercapacitor Engineering Laboratory
- College of Physics
- Jilin University
- Changchun 130012
- P. R. China
| | - Siqi Shen
- Jilin Supercapacitor Engineering Laboratory
- College of Physics
- Jilin University
- Changchun 130012
- P. R. China
| | - Duo Chen
- Jilin Supercapacitor Engineering Laboratory
- College of Physics
- Jilin University
- Changchun 130012
- P. R. China
| | - Wei Han
- Jilin Supercapacitor Engineering Laboratory
- College of Physics
- Jilin University
- Changchun 130012
- P. R. China
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