采用悬浮聚合法制备了一种新型氨基大孔交联吸附树脂,并考察其对水中重金属Cu(Ⅱ)、Pb(Ⅱ)、Cd(Ⅱ)的吸附性能。结果表明,该树脂吸附重金属吸附动力学符合拟二级动力学模型,吸附速率的主要限速步骤为颗粒内扩散。对Cu(Ⅱ)、Pb(Ⅱ)和Cd(Ⅱ)的等温吸附均符合Langmuir模型,最大平衡吸附量分别为0.84、0.75和0.52mmol/g;对Cu(Ⅱ)、Pb(Ⅱ)和Cd(Ⅱ)的去除机制是主要配位吸附,由氨基提供吸附位点。在pH=1～6范围内,氨基大孔交联吸附树脂对重金属的吸附能力较好;在0～10mmol/L范围内,该树脂对重金属的吸附量随着离子强度的增加而明显降低。
A novel amino microporous adsorption resin was prepared by suspension polymerization,and its adsorption properties for Cu(Ⅱ),Pb(Ⅱ),and Cd(Ⅱ) were investigated.The resin showed that the adsorption kinetics heavy metals adsorbed by the resin followed the pseudo second-order kinetic model,and the intra-particle diffusion was the main rate-limiting step.The adsorption isotherms of Cu(Ⅱ),Pb(Ⅱ),and Cd(Ⅱ) were fitted to the Langmuir isotherm model,and the maximum equilibrium adsorption capacities were 0.84mmol/g,0.75mmol/g,and 0.52mmol/g,respectively.The removal mechanism for Cu(Ⅱ),Pb(Ⅱ) and Cd(Ⅱ) was mainly coordination adsorption,in which amino nitrogen atoms (—NH2) provided adsorption sites.In the range of pH 1～6,the adsorption capacity of amino macroporous cross-linked adsorption resin for heavy metals was better.In the range of 0～10mmol/L,the adsorption capacity of the resin for heavy metals decreased obviously with the increase of ionic strength.
[1] 刘君侠,童铭,李莹莹,等.武汉地区典型行业土壤重金属污染分析与评价[J].广东化工,2019,46(6):151-153.
[2] 陈文.重金属污染水体危害问题及处理技术进展[J].绿色科技,2020(4):58-61.
[3] 李笛,张发根,曾振祥.矿山酸性废水中微量有害重金属元素的中和沉淀去除[J].湘潭大学自然科学学报,2012,34(2):79-84.
[4] Rakesh S,Sagar B,Sijan D,et al.Technological trends in heavy metals removal from industrial wastewater:a review[J].Journal of Environmental Chemical Engineering,2021,9(4):1-18.
[5] 刘文明.南方鲇幼鱼体内镉累积与毒性效应关系的研究[D].重庆:西南大学,2023.
[6] Jaishankar M,Tseten T,Anbalagan N,et al.Toxicity,mechanism and health effects of some heavy metals[J].Interdisciplinary Toxicology,2014,7(2):60-72.
[7] Kumar M,Nandi M,Pakshirajan K.Recent advances in heavy metal recovery from wastewater by biogenic sulfide precipitation[J].Journal of Environmental Management,2021,278(P2):111-155.
[8] Fu F,Xie L,Tang B,et al.Application of a novel strategy—Advanced Fenton-chemical precipitation to the treatment of strong stability chelated heavy metal containing wastewater[J].Chemical Engineering Journal,2012,189:283-287.
[9] Bashir A,Malik L A,Ahad S,et al.Removal of heavy metal ions from aqueous system by ion-exchange and biosorption methods[J].Environmental Chemistry Letters,2019,17(2):729-754.
[10] Tavakoli O,Goodarzi V,Saeb M R,et al.Competitive removal of heavy metal ions from squid oil under isothermal condition by CR11 chelate ion exchanger[J].Journal of Hazardous Materials,2017,334:256-266.
[11] Xiang H,Min X,Tang C J,et al.Recent advances in membrane filtration for heavy metal removal from wastewater:a mini review[J].Journal of Water Process Engineering,2022,49:103-143.
[12] Almasian A,Giahi M,Fard G C,et al.Removal of heavy metal ions by modified PAN/PANI-nylon core-shell nanofibers membrane:filtration performance,antifouling and regeneration behavior[J].Chemical Engineering Journal,2018,351:1166-1178.
[13] Chai W S,Cheun J Y,Kumar P S,et al.A review on conventional and novel materials towards heavy metal adsorption in wastewater treatment application[J].Journal of Cleaner Production,2021,296:126-189.
[14] 胡智涛.吸附法处理重金属废水污染的研究进展[J].当代化工研究,2023(7):21-23.
[15] Chen H,Yang X,Liu Y,et al.KOH modification effectively enhances the Cd and Pb adsorption performance of N-enriched biochar derived from waste chicken feathers[J].Waste Management,2021,130:82-92.
[16] Deng R,Huang D,Wan J,et al.Chloro-phosphate impregnated biochar prepared by co-precipitation for the lead,cadmium and copper synergic scavenging from aqueous solution[J].Bioresource Technology,2019,293:122-172.
[17] Zagklis D P,Vavouraki A I,Kornaros M E,et al.Purification of olive mill wastewater phenols through membrane filtration and resin adsorption/desorption[J].Journal of Hazardous Materials,2015,285:69-76.
[18] Qiang X,Luo J,Guo S,et al.A novel process for molasses utilization by membrane filtration and resin adsorption[J].Journal of Cleaner Production,2019,207:432-443.
[19] 程振林.离子交换树脂在处理含重金属废水中的应用[J].塑料助剂,2022(5):67-70.
[20] 葛淑兰,陈龙华,李中文.大孔吸附树脂及其在黄酮类成分分离纯化中的应用进展[J].中国药师,2008(6):702-705.
[21] 魏书静,黄赟,查刘生.改善聚乙烯醇薄膜耐水性的研究进展[J].化工进展,2017,36(7):2540-2546.
[22] 嵇梦圆,胡逸文,梁程,等.农林废弃物基生物炭对重金属铅和镉的吸附特性[J].生态与农村环境学报,2020,36(1):106-114.
[23] 雷燕.多胺交联吸附树脂对Cu(Ⅱ)和磺胺类抗生素的吸附特性及交互影响机制[D].重庆:重庆大学,2018.
[24] 戴振茜.官能团修饰聚合物水凝胶对Pb(Ⅱ)的选择性去除[D].南昌:南昌航空大学,2022.
[25] Christophi C A,Axe L.Competition of Cd,Cu,and Pb adsorption on goethite[J].Journal of Environmental Engineering,2000,126(1):66-74.
[26] 张丹丹,刘绍刚,董慧峪,等.松香基三烯丙酯交联聚合树脂的合成及其对水中Pb(Ⅱ)、Cd(Ⅱ)和Cu(Ⅱ)的吸附性能与机制[J].环境科学学报,2022,42(3):162-175.
[27] 周仕元.含三蝶烯和杯芳烃的多孔有机聚合物的合成及其吸附水溶性有机污染物的研究[D].苏州:苏州大学,2022.
[28] Chen J X,Cai C J,Zhang H Z,et al.Investigation of removal of Pb(Ⅱ) and Hg(Ⅱ) by a novel cross-linked chitosan-poly(aspartic acid) chelating resin containing disulfide bond[J].Colloid and Polymer Science,2014,292(9):2157-2172.
[29] Shaaban A,Fadel D,Mahmoud A,et al.Synthesis and characterization of dithiocarbamate chelating resin and its adsorption performance toward Hg(Ⅱ),Cd(Ⅱ) and Pb(Ⅱ) by batch and fixed-bed column methods[J].Journal of Environmental Chemical Engineering,2013,1(3):208-217.
[30] Baraka A,Hall P J,Heslop M J.Preparation and characterization of melamine-formaldehyde-DTPA chelating resin and its use as an adsorbent for heavy metals removal from wastewater[J].Reactive and Functional Polymers,2007,67(7):585-600.
[31] Liu X,Liu M,Dong H,et al.Synthesis of a tertiary amine hydrochloride macroporous resin adsorbent for removal of oxyhalide anions from water:performance,adsorption mechanism,and toxicity[J].Journal of Water Process Engineering,2022,47:102-159.
