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Wei C, Jiang F, Cao Q, Liu M, Wang J, Ji L, Yu Z, Shi M, Li F. Insights into the Mechanism of Efficient Cr(VI) Removal from Aqueous Solution by Iron-Rich Wheat Straw Hydrochar: Coupling DFT Calculation with Experiments. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:13355-13364. [PMID: 38952283 DOI: 10.1021/acs.langmuir.4c00387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/03/2024]
Abstract
Agricultural solid waste has become one of the raw materials for hydrothermal carbon production, promoting resource utilization. This study synthesized two types of ball-milling carbons (Fe-MHBC vs MHBC) with and without FeCl3 modification using wheat straw hydrochars. Cr(VI) adsorption on these two types of ball-milling carbons was investigated. According to Langmuir's maximum adsorption capacity analysis, Fe-MHBC had a capacity of 116.29 mg g-1. The thermodynamic analysis based on isothermal adsorption reveals the spontaneous process of the reaction between the two materials. The adsorption of Cr(VI) on Fe-MHBC exhibited excellent agreement with the pseudo-second-order kinetics model. Furthermore, X-ray photoelectron spectroscopy analysis showed that Fe(II) in the material reduced Cr(VI) when it participated in the reaction. The acidic conditions facilitate the elimination of Cr(VI). The Fe-MHBC has a higher zeta potential, which enhances the electrostatic attraction of Cr(VI) particles. Even with a starting pH of 10, the removal rate can be consistently maintained at over 64%. The adsorption of Cr(VI) was inhibited by various anions and higher ion concentrations. Density functional theory demonstrates that the presence of Fe enhances the adsorption capacity and electron transfer flux of Cr(VI). Fe-MHBC effectively eliminates Cr(VI) by the process of electrostatic adsorption, redox, and complexation reactions. This study demonstrated that hydrochar materials modified by FeCl3 through a ball-milling process show considerable potential as effective adsorbents in the treatment of Cr(VI) pollution, offering a viable and environmentally friendly solution for mitigating this prevalent environmental issue.
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Affiliation(s)
- Chengcheng Wei
- College of Resources and Environment Science, Anhui Science and Technology University, Fengyang 233010, China
| | - Fei Jiang
- College of Resources and Environment Science, Anhui Science and Technology University, Fengyang 233010, China
| | - Qi Cao
- College of Resources and Environment Science, Anhui Science and Technology University, Fengyang 233010, China
| | - Min Liu
- College of Resources and Environment Science, Anhui Science and Technology University, Fengyang 233010, China
| | - Jie Wang
- College of Resources and Environment Science, Anhui Science and Technology University, Fengyang 233010, China
| | - Licheng Ji
- College of Resources and Environment Science, Anhui Science and Technology University, Fengyang 233010, China
| | - Zhongpu Yu
- College of Resources and Environment Science, Anhui Science and Technology University, Fengyang 233010, China
| | - Mengting Shi
- College of Resources and Environment Science, Anhui Science and Technology University, Fengyang 233010, China
| | - Feiyue Li
- College of Resources and Environment Science, Anhui Science and Technology University, Fengyang 233010, China
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2
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Tang JY, Xiong YS, Li MX, Jia R, Zhou LS, Fan BH, Li K, Li W, Li H, Lu HQ. Hyperbranched polyethyleneimine-functionalised chitosan aerogel for highly efficient removal of melanoidins from wastewater. JOURNAL OF HAZARDOUS MATERIALS 2023; 447:130731. [PMID: 36640505 DOI: 10.1016/j.jhazmat.2023.130731] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 12/23/2022] [Accepted: 01/03/2023] [Indexed: 06/17/2023]
Abstract
Melanoidins are hazardous dark-coloured substances contained in molasses-based distillery wastewater. Adsorption is an effective approach to eliminate melanoidins from wastewater. However, melanoidin adsorption capacities of available adsorbents are unsatisfactory, which seriously limits their practical application. A hyperbranched polyethyleneimine-functionalised chitosan aerogel (HPCA) was fabricated as an effective adsorbent for melanoidin scavenging. HPCA demonstrated superior melanoidin adsorption efficiency because of its high specific surface area, abundant amino functional groups, and high hydrophilicity. Melanoidin removal rate of HPCA was 94.95%, which remained at 91.45% after 5 cycles. Notably, using the Langmuir isothermal model, the maximum melanoidin adsorption capacity of HPCA was determined to be 868.36 mg/g, surpassing those of most of previously reported adsorbents. Toxicity experiments indicated that HPCA can be considered a safe adsorbent with excellent biocompatibility that hardly threatens aquatic organisms. The efficient melanoidin removal of HPCA was attributed to electrostatic attraction, H-bonding, and van der Waals force. However, the adsorption might be predominantly controlled by electrovalent interaction between protonated amino groups of HPCA and carboxyl/carboxylate groups of melanoidins. Two novel models, namely, external diffusion resistance-internal diffusion resistance mixed model and adsorption on active site model, were employed to describe the dynamic mass transfer characteristics of melanoidin adsorption by HPCA.
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Affiliation(s)
- Jia-Yi Tang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Yan-Shu Xiong
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Ming-Xing Li
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Ran Jia
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Li-Shu Zhou
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Bo-Huan Fan
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Kai Li
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Wen Li
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning, China.
| | - Hong Li
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Hai-Qin Lu
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China.
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3
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Zhao Z, Wang X, Wang S, Xiao Z, Zhai S, Ma J, Dong X, Sun H, An Q. Three-Dimensional Hierarchical Seaweed-Derived Carbonaceous Network with Designed g-C 3N 4 Nanosheets: Preparation and Mechanism Insight for 4-Nitrophenol Photoreduction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:11054-11067. [PMID: 36049185 DOI: 10.1021/acs.langmuir.2c01700] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The development of g-C3N4-based photocatalysts with abundant active sites is of great significance for photocatalytic reactions. Herein, a smart and robust strategy was presented to fabricate three-dimensional (3D) g-C3N4 nanosheet-coated alginate-based hierarchical porous carbon (g-C3N4@HPC), including coating melamine on calcium alginate (CA) hydrogel beads, freeze-drying hydrogel beads as well as pyrolysis at high temperatures. The resulting photocatalyst possessed a significantly high surface area and a large amount of interconnected macropores compared with porous carbon without the melamine coating. The unique structural features could effectively inhibit the curling and agglomeration of g-C3N4 nanosheets, provide abundant photocatalytic active sites, and promote mass diffusion. Therefore, the g-C3N4@HPC composite exhibited remarkable photocatalytic activity and outstanding stability toward the photoreduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) by NaBH4 under natural sunlight and simulated visible-light irradiation (λ > 420 nm) using a 300 W xenon lamp. Moreover, the mechanism toward the photocatalytic reaction was extensively studied by quenching experiments and electron spin resonance (ESR) experiments. The results showed that active hydrogen species were able to be achieved by following a dual-channel pathway in the NaBH4 system, which included photocatalytic reduction of H+ ions and photocatalytic oxidation of BH4- ions. This work not only opens up a new way to design efficient photocatalysts for various reactions but also provides a reference for an in-depth study of the photoreduction mechanism.
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Affiliation(s)
- Zhenyu Zhao
- Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, P. R. China
| | - Xuting Wang
- Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, P. R. China
| | - Shifu Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Zuoyi Xiao
- Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, P. R. China
| | - Shangru Zhai
- Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, P. R. China
| | - Jiliang Ma
- Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, P. R. China
| | - Xiaoli Dong
- Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, P. R. China
| | - Haodong Sun
- Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, P. R. China
| | - Qingda An
- Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, P. R. China
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4
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Wang Q, Shao J, Xu J, Dong F, Xiong Y, Chen Q. In-situ formed Cyclodextrin-functionalized graphene oxide / poly (N-isopropylacrylamide) nanocomposite hydrogel as an recovery adsorbent for phenol and microfluidic valve. J Colloid Interface Sci 2021; 607:253-268. [PMID: 34500424 DOI: 10.1016/j.jcis.2021.08.130] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/19/2021] [Accepted: 08/20/2021] [Indexed: 10/20/2022]
Abstract
Phenolic compounds are important industrial raw materials for various industrial applications, but phenol-containing wastewater creates significant environmental and biological hazards. To address these issues, a three-dimensional network graphene oxide-cyanoethyltriethoxysilane-β-cyclodextrin/poly (N-isopropylacrylamide) (GO-CTES-β-CD/PNIPAM) nanocomposite hydrogel as a phenol recovery adsorbent is prepared herein by in-situ polymerization. Double graft modification on the graphene oxide (GO) via the silane coupling agent 2-cyanoethyltriethoxysilane (CTES) and single (6-tetraethylenepentamine-6-deoxy)-β-cyclodextrin (NH-β-CD) compensated the loss of the active sites on both GO and N-isopropylacrylamide (NIPAM), and the hydrogel shows excellent mechanical properties as the chemical crosslinking and physical entanglement of the two components. Consequently, the composite hydrogel achieved an adsorption capacity of 131.64 mg·g-1 for the common environmental toxin 4-NP. After five repeated adsorption-desorption cycles, the hydrogel retained 74% of the initial 4-NP removal ratio. The adsorption results followed pseudo-first-order kinetics, corresponding to heterogeneous multilayer adsorption, which was regulated by a combination of surface adsorption and intra-particle diffusion mechanisms. In general, the nanocomposite hydrogel shows promising application in the field of recycling phenols from wastewater. Also, high photothermal conversion and temperature-sensitive properties are also demonstrated, which makes the hydrogel possessing great potential to be applied in smart microvalves.
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Affiliation(s)
- Qian Wang
- Department of Polymer Materials and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China
| | - Jiaojing Shao
- Department of Polymer Materials and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China
| | - Jing Xu
- Department of Polymer Materials and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China
| | - Fuping Dong
- Department of Polymer Materials and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China
| | - Yuzhu Xiong
- Department of Polymer Materials and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China.
| | - Qianlin Chen
- School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
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5
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Sustainable Removal of Contaminants by Biopolymers: A Novel Approach for Wastewater Treatment. Current State and Future Perspectives. Processes (Basel) 2021. [DOI: 10.3390/pr9040719] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Naturally occurring substances or polymeric biomolecules synthesized by living organisms during their entire life cycle are commonly defined as biopolymers. Different classifications of biopolymers have been proposed, focusing on their monomeric units, thus allowing them to be distinguished into three different classes with a huge diversity of secondary structures. Due to their ability to be easily manipulated and modified, their versatility, and their sustainability, biopolymers have been proposed in different fields of interest, starting from food, pharmaceutical, and biomedical industries, (i.e., as excipients, gelling agents, stabilizers, or thickeners). Furthermore, due to their sustainable and renewable features, their biodegradability, and their non-toxicity, biopolymers have also been proposed in wastewater treatment, in combination with different reinforcing materials (natural fibers, inorganic micro- or nano-sized fillers, antioxidants, and pigments) toward the development of novel composites with improved properties. On the other hand, the improper or illegal emission of untreated industrial, agricultural, and household wastewater containing a variety of organic and inorganic pollutants represents a great risk to aquatic systems, with a negative impact due to their high toxicity. Among the remediation techniques, adsorption is widely used and documented for its efficiency, intrinsic simplicity, and low cost. Biopolymers represent promising and challenging adsorbents for aquatic environments’ decontamination from organic and inorganic pollutants, allowing for protection of the environment and living organisms. This review summarizes the results obtained in recent years from the sustainable removal of contaminants by biopolymers, trying to identify open questions and future perspectives to overcome the present gaps and limitations.
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6
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Lei C, Song Y, Meng F, Sun Y, Tsang DCW, Yang K, Lin D. Iron-crosslinked alginate derived Fe/C composites for atrazine removal from water. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 756:143866. [PMID: 33293096 DOI: 10.1016/j.scitotenv.2020.143866] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 11/10/2020] [Accepted: 11/10/2020] [Indexed: 06/12/2023]
Abstract
Fe/C composite is emerging as a promising nanoscale zero-valent iron (nZVI) based material for wastewater treatment to counteract the limitations of nZVI, while its preparation method, structure-activity relationship, and working mechanisms and conditions still need to be studied. In this study, Fe/C composites derived from iron-crosslinked alginate was successfully achieved via high temperature pyrolysis. Ferric ions were only transformed into Fe3O4/γ-Fe2O3 at low pyrolysis temperature (≤500 °C), whereas Fe0/Fe3C became the primary Fe species with the formation of graphitic carbon at elevated pyrolysis temperature (≥700 °C). Fe/C composites from higher pyrolysis temperature presented better performance in atrazine (ATZ) removal, and the optimal pyrolysis temperature was 800 °C (Fe/C-800). Batch experiments showed that the removal kinetics of ATZ (10 mg L-1) by Fe/C-800 (0.2 g L-1) followed pseudo-second-order model, and 24-h ATZ removal efficiency maintained at 93.5 ± 1.0% within pH 3-9. The adsorption by the graphitic carbon phase of Fe/C-800 was the principal contributor to the pH-independent superior performance in ATZ removal, and the Langmuir model fitted adsorption capacity was 64.8 mg g-1 at pH 6. Although the carbon-phase adsorbed ATZ was basically unavailable for degradation, Fe0/Fe3C-mediated ATZ degradation contributed to the great reactivity of Fe/C-800 at pH 3. Fe0/Fe3C in Fe/C-800 was more efficient for ATZ degradation than commercial nZVI, and oxidative dealkylation by Fe0/Fe3C mediated Fenton reaction was the predominant ATZ degradation pathway rather than reductive dechlorination. Moreover, the produced ATZ degradation intermediates could be further adsorbed by Fe/C-800, mitigating potential secondary pollution. Thus, iron-crosslinked alginate derived Fe/C composites can be an excellent alternative for nZVI in organics-polluted water treatment with great reactivity and wide pH applicability.
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Affiliation(s)
- Cheng Lei
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
| | - Yan Song
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
| | - Fanxu Meng
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
| | - Yuqing Sun
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Kun Yang
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Zhejiang University, Hangzhou 310058, China
| | - Daohui Lin
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Zhejiang University, Hangzhou 310058, China.
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7
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Han X, Zhang Y, Zheng C, Yu X, Li S, Wei W. Enhanced Cr(VI) removal from water using a green synthesized nanocrystalline chlorapatite: Physicochemical interpretations and fixed-bed column mathematical model study. CHEMOSPHERE 2021; 264:128421. [PMID: 33011481 DOI: 10.1016/j.chemosphere.2020.128421] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 09/10/2020] [Accepted: 09/19/2020] [Indexed: 06/11/2023]
Abstract
Apatite-based minerals have attracted much attention in the remediation of heavy metal-contaminated environment. However, exploring apatite with efficient adsorption performance for inorganic oxyanions such as Cr(VI) remains a challenge. Herein, a novel nanocrystalline chlorapatite (ClAP) was promptly prepared by a green method using eggshell wastes as calcium source with the purpose to enhance Cr(VI) adsorption capability. The generated ClAP was characterized by XRD, SEM-EPMA, TEM, FTIR, and BET analyses. Batch and column experiments were subsequently carried out to explore the influencing factors, adsorption capacity and removal mechanism. Results showed that ClAP exhibited excellent stability and adsorption performance for Cr(VI) (63.47 mg g-1), which was much greater than that of hydroxyapatite and most reported materials. The adsorption process was fitted well by the pseudo-second-order model and the Langmuir model. In fixed bed column experiments, a novel time-fractional derivative model exhibited much better suitability in interpreting the observed breakthrough curves of Cr(VI) than traditional models. Furthermore, the reusability of ClAP in column was evaluated. Results showed that the adsorption capacity maintained well after consecutively reused for five cycles. Studies of the effect of pH, as well as FTIR and XPS investigations indicated that Cr(VI) adsorption was mainly ascribed to electrostatic interactions and surface complexation, while the reduction of Cr(VI) to the low-toxicity Cr(III) also existed in the adsorption process. The ClAP adsorbent was also successfully used for Cr(VI) remediation from real wastewater. Hence, nanocrystalline ClAP can be a promising material for enhancing the elimination of oxyanion contaminants such as Cr(VI) from water.
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Affiliation(s)
- Xuan Han
- School of Environment, Nanjing Normal University, Nanjing, 210023, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China
| | - Yong Zhang
- Department of Geological Sciences, University of Alabama, Tuscaloosa, AL, 35487, USA
| | - Chunmiao Zheng
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Shenzhen, 518055, China; School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Xiangnan Yu
- College of Mechanics and Materials, Hohai University, Nanjing, 210098, China
| | - Shiyin Li
- School of Environment, Nanjing Normal University, Nanjing, 210023, China
| | - Wei Wei
- School of Environment, Nanjing Normal University, Nanjing, 210023, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China; Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Shenzhen, 518055, China.
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8
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Nasrollahzadeh M, Sajjadi M, Iravani S, Varma RS. Starch, cellulose, pectin, gum, alginate, chitin and chitosan derived (nano)materials for sustainable water treatment: A review. Carbohydr Polym 2021; 251:116986. [PMID: 33142558 PMCID: PMC8648070 DOI: 10.1016/j.carbpol.2020.116986] [Citation(s) in RCA: 244] [Impact Index Per Article: 81.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 08/20/2020] [Accepted: 08/21/2020] [Indexed: 12/12/2022]
Abstract
Natural biopolymers, polymeric organic molecules produced by living organisms and/or renewable resources, are considered greener, sustainable, and eco-friendly materials. Natural polysaccharides comprising cellulose, chitin/chitosan, starch, gum, alginate, and pectin are sustainable materials owing to their outstanding structural features, abundant availability, and nontoxicity, ease of modification, biocompatibility, and promissing potentials. Plentiful polysaccharides have been utilized for making assorted (nano)catalysts in recent years; fabrication of polysaccharides-supported metal/metal oxide (nano)materials is one of the effective strategies in nanotechnology. Water is one of the world's foremost environmental stress concerns. Nanomaterial-adorned polysaccharides-based entities have functioned as novel and more efficient (nano)catalysts or sorbents in eliminating an array of aqueous pollutants and contaminants, including ionic metals and organic/inorganic pollutants from wastewater. This review encompasses recent advancements, trends and challenges for natural biopolymers assembled from renewable resources for exploitation in the production of starch, cellulose, pectin, gum, alginate, chitin and chitosan-derived (nano)materials.
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Affiliation(s)
| | - Mohaddeseh Sajjadi
- Department of Chemistry, Faculty of Science, University of Qom, Qom, 37185-359, Iran
| | - Siavash Iravani
- Faculty of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Rajender S Varma
- Chemical Methods and Treatment Branch, Water Infrastructure Division, Center for Environmental Solutions and Emergency Response, U. S. Environmental Protection Agency, 26 West Martin Luther King Drive, Cincinnati, OH, 45268, USA; Regional Centre of Advanced Technologies and Materials, Palacký University in Olomouc, Šlechtitelů 27, 783 71, Olomouc, Czech Republic.
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9
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Xiao C, Lin J. Efficient Removal of Cr(VI) Ions by a Novel Magnetic 4-Vinyl Pyridine Grafted Ni 3Si 2O 5(OH) 4 Multiwalled Nanotube. ACS OMEGA 2020; 5:23099-23110. [PMID: 32954160 PMCID: PMC7495723 DOI: 10.1021/acsomega.0c02874] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 08/24/2020] [Indexed: 06/11/2023]
Abstract
The contamination of water systems by heavy metals greatly threatens human health and ecological safety. An efficient adsorbent is critical for the removal of these contaminants. In this work, magnetic Ni3Si2O5(OH)4 nanotubes (NTs) have been synthesized via in situ hydrothermal reduction and further functionalized by grafting poly(4-vinyl pyridine) (P4VP) brushes on its surface via atom transfer radical polymerization. Characterizations by Fourier transform infrared, X-ray diffraction, thermogravimetric analysis, transmission electron microscopy, and X-ray photoelectron spectroscopy proved that P4VP was successfully grafted on the surface of magnetic Ni3Si2O5(OH)4 NTs. The resultant Ni3Si2O5(OH)4-g-P4VP NTs are efficient nanosorbents for removing Cr(VI) anions from water. The Cr(VI) adsorption capacity of Ni3Si2O5(OH)4-g-P4VP NTs reaches 1.49 mmol/g at a pH of 3. The pseudo-second-order kinetic model and the Freundlich isothermal model are suitable to describe the adsorption process. The analysis using Weber-Morris and Boyd models indicates that both intraparticle diffusion and external film diffusion affect the Cr(VI) adsorption process. The adsorption enthalpy is estimated to be 18.37 kJ/mol. More than 90% of the Cr(VI) adsorption capacity of the Ni3Si2O5(OH)4-g-P4VP NTs remains after eight adsorption and desorption cycles.
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Affiliation(s)
- Chunmei Xiao
- College
of Materials Science & Engineering, Huaqiao University, Xiamen Campus, Xiamen 361021, China
- College
of Chemical Engineering and Materials, Quanzhou
Normal University, Quanzhou 362002, China
| | - Jianming Lin
- College
of Materials Science & Engineering, Huaqiao University, Xiamen Campus, Xiamen 361021, China
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10
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High-efficacy adsorption of Cr(VI) and anionic dyes onto β-cyclodextrin/chitosan/hexamethylenetetramine aerogel beads with task-specific, integrated components. Int J Biol Macromol 2019; 128:268-278. [DOI: 10.1016/j.ijbiomac.2019.01.139] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 12/23/2018] [Accepted: 01/24/2019] [Indexed: 11/23/2022]
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11
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Phosphorus removal and recovery from water with macroporous bead adsorbent constituted of alginate-Zr4+ and PNIPAM-interpenetrated networks. Int J Biol Macromol 2019; 126:1133-1144. [DOI: 10.1016/j.ijbiomac.2018.12.269] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 12/06/2018] [Accepted: 12/30/2018] [Indexed: 11/18/2022]
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12
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Jin L, Sun G, Zhang H, Yuan G, Ma J, Peng X, Cui Y. Design of a preorganized adsorbent for the removal of chromate from wastewater under neutral conditions. Chem Commun (Camb) 2019; 55:3485-3488. [DOI: 10.1039/c9cc00940j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A preorganized structure with two positive nitrogen ions linked by a carbon atom was designed. This structure acts like crab pincers to tightly entrap chromate.
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Affiliation(s)
- Limin Jin
- School of Chemistry and Chemical Engineering
- Institute for Smart Materials & Engineering
- University of Jinan
- Jinan
- China
| | - Guoxin Sun
- School of Chemistry and Chemical Engineering
- Institute for Smart Materials & Engineering
- University of Jinan
- Jinan
- China
| | - Hao Zhang
- School of Chemistry and Chemical Engineering
- Institute for Smart Materials & Engineering
- University of Jinan
- Jinan
- China
| | - Guangzheng Yuan
- School of Chemistry and Chemical Engineering
- Institute for Smart Materials & Engineering
- University of Jinan
- Jinan
- China
| | - Jiapeng Ma
- School of Chemistry and Chemical Engineering
- Institute for Smart Materials & Engineering
- University of Jinan
- Jinan
- China
| | - Xiujing Peng
- School of Chemistry and Chemical Engineering
- Institute for Smart Materials & Engineering
- University of Jinan
- Jinan
- China
| | - Yu Cui
- School of Chemistry and Chemical Engineering
- Institute for Smart Materials & Engineering
- University of Jinan
- Jinan
- China
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Shen W, Jiang X, An QD, Xiao ZY, Zhai SR, Cui L. Combining mussel and seaweed hydrogel-inspired strategies to design novel ion-imprinted sorbents for ultra-efficient lead removal from water. NEW J CHEM 2019. [DOI: 10.1039/c8nj06154h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lead(ii) is one of the most toxic heavy metals and is a serious threat to the environment and human health.
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Affiliation(s)
- Wei Shen
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- P. R. China
| | - Xiao Jiang
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- P. R. China
| | - Qing-Da An
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- P. R. China
| | - Zuo-Yi Xiao
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- P. R. China
| | - Shang-Ru Zhai
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- P. R. China
| | - Li Cui
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- P. R. China
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14
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Guo DM, An QD, Li R, Xiao ZY, Zhai SR. Ultrahigh selective and efficient removal of anionic dyes by recyclable polyethylenimine-modified cellulose aerogels in batch and fixed-bed systems. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.06.081] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Sathvika T, Soni A, Sharma K, Praneeth M, Mudaliyar M, Rajesh V, Rajesh N. Potential Application of Saccharomyces cerevisiae and Rhizobium Immobilized in Multi Walled Carbon Nanotubes to Adsorb Hexavalent Chromium. Sci Rep 2018; 8:9862. [PMID: 29959352 PMCID: PMC6026182 DOI: 10.1038/s41598-018-28067-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 06/14/2018] [Indexed: 01/05/2023] Open
Abstract
The presence of harmful contaminants in the waste stream is an important concern worldwide. The convergence of biotechnology and nanoscience offers a sustainable alternative in treating contaminated waters. Hexavalent chromium, being carcinogenic deserves effective and sustainable methods for sequestration. Here in, we report the immobilization of a prokaryote (Rhizobium) and eukaryote (Saccharomyces cerevisiae) in multiwalled carbon nanotubes (MWCNTs) for the effective adsorption of hexavalent chromium. The carboxylic groups were introduced into the MWCNTs during oxidation using potassium permanganate and were subjected to EDC-HOBT coupling to bind with microbial cell surface. FTIR, TGA, BET, FESEM-EDAX, HRTEM, XPS and confocal microscopy were the investigative techniques used to characterize the developed biosorbents. Experimental variables such as pH, adsorbent dosage, kinetics, isotherms and thermodynamics were investigated and it was observed that the system follows pseudo second order kinetics with a best fit for Langmuir isotherm. Electrostatic interactions between the functional groups in the microbial cell wall and hydrochromate anion at pH 2.0 propel the adsorption mechanism. The lab scale column studies were performed with higher volumes of the Cr(VI) contaminated water. Sodium hydroxide was used as the desorbing agent for reuse of the biosorbents. The sustainable biosorbents show prospects to treat chromium contaminated water.
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Affiliation(s)
- T Sathvika
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad campus, Jawahar Nagar, Hyderabad, 500 078, India
| | - Amitesh Soni
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad campus, Jawahar Nagar, Hyderabad, 500 078, India
| | - Kriti Sharma
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad campus, Jawahar Nagar, Hyderabad, 500 078, India
| | - Malipeddi Praneeth
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad campus, Jawahar Nagar, Hyderabad, 500 078, India
| | - Manasi Mudaliyar
- Department of Biological Sciences, Birla Institute of Technology and Science, Pilani, Hyderabad campus, Jawahar Nagar, Hyderabad, 500 078, India
| | - Vidya Rajesh
- Department of Biological Sciences, Birla Institute of Technology and Science, Pilani, Hyderabad campus, Jawahar Nagar, Hyderabad, 500 078, India
| | - N Rajesh
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad campus, Jawahar Nagar, Hyderabad, 500 078, India.
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16
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Pang LJ, Hu JT, Zhang MJ, Yang CG, Wu GZ. An efficient and reusable quaternary ammonium fabric adsorbent prepared by radiation grafting for removal of Cr(VI) from wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:11045-11053. [PMID: 29411276 DOI: 10.1007/s11356-018-1355-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 01/22/2018] [Indexed: 06/08/2023]
Abstract
A novel quaternary ammonium polyethylene nonwoven fabric for removing chromium ions from water was prepared via radiation-induced grafting of glycidyl methacrylate and further modification with N,N'-dimethylethylenediamine. The structural and morphological characteristics of the adsorbent were analyzed using Fourier transform infrared spectroscopy (FTIR), thermogravimetry and differential thermogravimetry (TG/DTG), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). The influences of several principal factors, including pH value, initial Cr(VI) concentration, contact time, and coexisting anions (including SO42-, CO32-, NO3-, PO43-, and Cl-), on adsorption performance were investigated via batch tests. The results showed that the optimum removal efficiency was 99.2% at pH 3 and the maximum adsorption quantity for Cr(VI) at 25 °C was 336 mg/g. The adsorption kinetic parameters were better fitted with the pseudo-second-order kinetic model, and the equilibrium data were described very well by the Freundlich isotherm model. Furthermore, the as-synthesized adsorbent exhibited excellent regeneration and recyclability while maintaining high adsorption performance after five adsorption/desorption cycles.
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Affiliation(s)
- Li-Juan Pang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jiang-Tao Hu
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China
| | - Mao-Jiang Zhang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China
| | - Chen-Guang Yang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China
| | - Guo-Zhong Wu
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China.
- School of Physical Science and Technology, Shanghai Tech University, Shanghai, 200031, China.
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17
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Pei YY, An QD, Xiao ZY, Zhai SR, Zhai B. Biomass-based carbon beads with a tailored hierarchical structure and surface chemistry for efficient batch and column uptake of methylene blue. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3285-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Li R, An QD, Xiao ZY, Zhai B, Zhai SR, Shi Z. Preparation of PEI/CS aerogel beads with a high density of reactive sites for efficient Cr(vi) sorption: batch and column studies. RSC Adv 2017. [DOI: 10.1039/c7ra06914f] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
PEI/CS aerogel beads with a high density of reactive amino groups, with the aim of efficient Cr(vi) removal from aqueous solutions under column conditions, were easily prepared via combinational yet controllable sol–gel and freeze drying processes.
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Affiliation(s)
- Ran Li
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Qing-Da An
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Zuo-Yi Xiao
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Bin Zhai
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Shang-Ru Zhai
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Zhan Shi
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- China
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19
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Guo DM, An QD, Xiao ZY, Zhai SR, Shi Z. Polyethylenimine-functionalized cellulose aerogel beads for efficient dynamic removal of chromium(vi) from aqueous solution. RSC Adv 2017. [DOI: 10.1039/c7ra09940a] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Cellulose aerogel beads with high a density of reactive amino groups were facilely prepared via a cross-linking reaction for efficient dynamic removal of Cr(vi) from aqueous solutions.
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Affiliation(s)
- Dong-Mei Guo
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Qing-Da An
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Zuo-Yi Xiao
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Shang-Ru Zhai
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Zhan Shi
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- China
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