纳米纤维素去除水体系重金属离子的研究进展
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摘要
水体系重金属污染治理是目前全世界所面临的一个重大挑战。传统治理方法由于成本高、效率低等问题已不符合当今社会可持续发展战略。纳米纤维素凭借其来源丰富、可再生、化学反应活性高、比表面积大、密度低等优点,在水体系重金属离子去除领域有着光明的应用前景。然而,纳米纤维素吸附材料在水体系重金属去除领域还存在吸附量较低,吸附选择性、再生性、性能稳定性较差,制备成本较高等问题,这限制了其在水体系重金属离子去除领域的工业化应用。通过改性和结构设计不断提高纳米纤维素材料的吸附效率是行之有效的途径,本文从化学改性和结构设计两方面出发,系统地综述了纳米纤维素在水体系重金属离子去除领域的研究现状,并对其中存在的科学技术问题进行总结。最后,展望了纳米纤维素在水体系重金属离子去除领域的发展趋势。
Heavy metal pollution treatment in water is one of the great challenges all over the world.Traditional treatment methods cannot meet the growing requirements of the sustainable development of our society because of high treatment cost and low efficiency. Nanocellulose has advantages of earth abundance, excellent chemical reactivity, large specific surface area, and relatively low density, and demonstrates its foreseeable applications in the removal of heavy metal ions in water. However, removing metal ions in water by nanocellulose adsorbents remains a challenge due to its low adsorption capacity,poor selectivity, poor reproducibility, and performance instability, which restricts its commercial applications. One of the effective methods to enhance the adsorption efficiency is by modifying the surface properties of nanocellulose and/or designing the structure of nanocellulose absorbents. This review first covered the recent advances in nanocellulose for removing heavy metal ions in water in terms of chemical modifications and structural design of nanocellulose. Then, the scientific problems existing in this field were summarized in detail. Finally, the future development trend of nanocellulose in the field of heavy metal ions removal in water was envisioned.
Heavy metal pollution treatment in water is one of the great challenges all over the world.Traditional treatment methods cannot meet the growing requirements of the sustainable development of our society because of high treatment cost and low efficiency. Nanocellulose has advantages of earth abundance, excellent chemical reactivity, large specific surface area, and relatively low density, and demonstrates its foreseeable applications in the removal of heavy metal ions in water. However, removing metal ions in water by nanocellulose adsorbents remains a challenge due to its low adsorption capacity,poor selectivity, poor reproducibility, and performance instability, which restricts its commercial applications. One of the effective methods to enhance the adsorption efficiency is by modifying the surface properties of nanocellulose and/or designing the structure of nanocellulose absorbents. This review first covered the recent advances in nanocellulose for removing heavy metal ions in water in terms of chemical modifications and structural design of nanocellulose. Then, the scientific problems existing in this field were summarized in detail. Finally, the future development trend of nanocellulose in the field of heavy metal ions removal in water was envisioned.
引文
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[4] BAI H, ZAN X, JUAY J, et al. Hierarchical heteroarchitectures functionalized membrane for high efficient water purification[J].Journal of Menbrane Science, 2015, 475:245-251.
[5] WILLNER, MARJORIE R, VIKESLAND, et al. Nanomaterial enabled sensors for environmental contaminants[J]. Journal of Nanobiotechnology, 2018, 16(1):95.
[6] TAN K W, HEO S K, FOO M L, et al. An insight into nanocellulose as soft condensed matter:challenge and future prospective toward environmental sustainability[J]. Science of the Total Environment.2019, 650(1):1306-1329.
[7] MAHFOUDHI N, BOUFI S. Nanocellulose as a novel nanostructured adsorbent for environmental remediation:a review[J]. Cellulose, 2017,24(3):1171-1197.
[8] KLEMM D, CRANSTON E D, FISCHER D, et al. Nanocellulose as a natural source for groundbreaking applications in materials science:Today’s state[J]. Materials Today, 2018, 21(7):720-748.
[9] ZHU H, LUO W, CIESIELSKI P N, et al. Wood-derived materials for green electronics, biological devices, and energy applications[J].Chemical Reviews, 2016, 116(16):9305-9374.
[10] P??KK?M, ANKERFORS M, KOSONEN H, et al. Enzymatic hydrolysis combined with mechanical shearing and high-pressure homogenization for nanoscale cellulose fibrils and strong gels[J].Biomacromolecules, 2007, 8(6):1934-1941.
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[12] KLEMM D, KRAMER F, MORITZ S, et al. Nanocelluloses:a new family of nature-based materials[J]. Angewandte Chemie, 2011, 50(24):5438-5466.
[13] KATRINA P Y S, YEAN L P, SHEE K M. Nanocellulose:recent advances and its prospects in environmental remediation[J]. Beilstein Journal of Nanotechnology, 2018, 9:2479-2498.
[14] MARZOUGUI Z, DAMAK M, ELLEUCH B, et al. Occurrence and enhanced removal of heavy metals in industrial wastewater treatment plant using coagulation-flocculation process[C]//Euro-Mediterranean Conference for Environmental Integration, Springer, Cham, 2017:535-538.
[15] MALEKI H, HüSING N. 16-Aerogels as promising materials for environmental remediation——a broad insight into the environmental pollutants removal through adsorption and(photo)catalytic processes[J]. New Polymer Nanocomposites for Environmental Remediation,2018:389-436.
[16] HOKKANEN S, REPO E, SILLANP??M. Removal of heavy metals from aqueous solutions by succinic anhydride modified mercerized nanocellulose[J]. Chemical Engineering Journal, 2013, 223(3):40-47.
[17] HOKKANEN S, REPO E, SUOPAJ?RVI T, et al. Adsorption of Ni(Ⅱ), Cu(Ⅱ)and Cd(Ⅱ)from aqueous solutions by amino modified nanostructured microfibrillated cellulose[J]. Cellulose, 2014, 21(3):1471-1487.
[18] GENG B, WANG H, WU S, et al. Surface-tailored nanocellulose aerogels with thiol-functional moieties for highly efficient and selective removal of Hg(Ⅱ)ions from water[J]. ACS Sustainable Chemistry&Engineering, 2017, 5(12):11715-11726.
[19] LIU P, BORRELL P F, BO?I?M, et al. Nanocelluloses and their phosphorylated derivatives for selective adsorption of Ag+, Cu2+and Fe3+from industrial effluents[J]. Journal of Hazardous Materials, 2015,294:177-185.
[20] YAO C, WANG F, CAI Z, et al. Aldehyde-functionalized porous nanocellulose for effective removal of heavy metal ions from aqueous solutions[J]. RSC Advances, 2016, 6(95):92648-92654.
[21] KARDAM A, RAJ K R, SRIVASTAVA S, et al. Nanocellulose fibers for biosorption of cadmium, nickel, and lead ions from aqueous solution[J]. Clean Technologies&Environmental Policy, 2014, 16(2):385-393.
[22] SINGH K, ARORA J K, SINHA T J M, et al. Functionalization of nanocrystalline cellulose for decontamination of Cr(Ⅲ)and Cr(Ⅵ)from aqueous system:computational modeling approach[J]. Clean Technologies&Environmental Policy, 2014, 16(6):1179-1191.
[23]侯淑娜,苏巧权,林春香.纳米纤维素的改性及应用[J].中华纸业,2017, 38(22):11-17.HOU S N, SU Q Q, LIN C X. Modification and application of nanocellulose[J]. China Pulp&Paper Industry, 2017, 38(22):11-17.
[24] PUTRO J N, SANTOSO S P, ISMADJI S, et al. Investigation of heavy metal adsorption in binary system by nanocrystalline cellulosebentonite nanocomposite:improvement on extended Langmuir isotherm model[J]. Microporous&Mesoporous Materials, 2017, 246:166-177.
[25] IM W, LEE S, ABHARI A R, et al. Optimization of carboxymethylation reaction as a pretreatment for production of cellulose nanofibrils[J].Cellulose, 2018, 25(2):1-11.
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