水合氧化铁负载D418树脂对磷的吸附性能研究
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摘要
摘要利用原位沉淀法将水合氧化铁(HFO)负载于氨基膦酸树脂D418上,制备一种对污水中磷具有良好吸附性能的复合吸附剂(HFO-D418),研究了pH、共存离子对HFO-D418去除水中磷的影响,结合红外光谱对HFO-D418吸附磷的机制进行探讨。结果表明,D418与HFO-D418对磷的吸附均在pH为7.0时达到最佳,最大吸附量分别为9.21、36.12mg/g。共存离子的存在将降低两种吸附剂对磷的吸附量,相比而言,HFO-D418受共存离子的影响较D418小,4种共存离子中,CO_3~(2-)对吸附的影响最大,NO_3~-的影响最小。HFO-D418再生性能优异,以4%(质量分数,下同)NaOH+4%NaCl为解吸剂,经5次再生循环后HFO-D418解吸率仍为80%左右。D418与HFO-D418对磷的吸附过程符合准一级动力学方程,D418离子交换作用及HFO与磷的络合反应、静电吸引是HFO-D418吸附磷的主要作用机制。
Hydrated ferric oxide(HFO)was loaded on amino phosphonic acid resin D418 by using in-situ precipitation method,the obtained composite adsorbent(HFO-D418)presented perfect performance for the removal of phosphorus from wastewater.The influence of different parameters such as pH,coexisting ions on phosphorus removal by HFO-D418 was investigated,and the mechanism of adsorption was analyzed based on infrared spectroscopy.The results showed the optimum phosphorus adsorption pH of D418 and HFO-D418 were both 7.0 and the maximum adsorption capacities were 9.21,36.12 mg/g,respectively.The presence of coexisting ion could reduce the adsorption capacity of phosphorus by D418 and HFO-D418,whereas the effect of HFO-D418 was less than that of D418.Among the four coexisting ions,CO_3~(2-) had the greatest effect and NO_3~- was the least.HFO-D418 presented excellent regeneration property and the regenerated efficiency,after five times of regeneration by 4%(mass ration,the same below)NaOH+4% NaCl,the desorption rate of HFO-D418 was still about 80%.The kinetic equation fitted well with first order kinetic equation for both sorbent.Ion exchange of D418,complexation between HFO and phosphorus and their electrostatic interaction were the main adsorption mechanisms of phosphorous on HFO-D418.
Hydrated ferric oxide(HFO)was loaded on amino phosphonic acid resin D418 by using in-situ precipitation method,the obtained composite adsorbent(HFO-D418)presented perfect performance for the removal of phosphorus from wastewater.The influence of different parameters such as pH,coexisting ions on phosphorus removal by HFO-D418 was investigated,and the mechanism of adsorption was analyzed based on infrared spectroscopy.The results showed the optimum phosphorus adsorption pH of D418 and HFO-D418 were both 7.0 and the maximum adsorption capacities were 9.21,36.12 mg/g,respectively.The presence of coexisting ion could reduce the adsorption capacity of phosphorus by D418 and HFO-D418,whereas the effect of HFO-D418 was less than that of D418.Among the four coexisting ions,CO_3~(2-) had the greatest effect and NO_3~- was the least.HFO-D418 presented excellent regeneration property and the regenerated efficiency,after five times of regeneration by 4%(mass ration,the same below)NaOH+4% NaCl,the desorption rate of HFO-D418 was still about 80%.The kinetic equation fitted well with first order kinetic equation for both sorbent.Ion exchange of D418,complexation between HFO and phosphorus and their electrostatic interaction were the main adsorption mechanisms of phosphorous on HFO-D418.
引文
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[2]DENG S,LI D,YANG X,et al.Iron[Fe(0)]-rich substrate based on iron-carbon micro-electrolysis for phosphorus adsorption in aqueous solutions[J].Chemosphere,2017,168:1486-1493.
[3]DE BASHAN L E,BASHAN Y.Recent advances in removing phosphorus from wastewater and its future use as fertilizer(1997-2003)[J].Water Research,2004,38(19):4222-4246.
[4]XU D,XU J,WU J,et al.Studies on the phosphorus sorption capacity of substrates used in constructed wetland systems[J].Chemosphere,2006,63(2):344-352.
[5]WEI L L,WANG G Z,JIANG J Q,et al.Co-removal of phosphorus and nitrogen with commercial 201×7anion exchange resin during tertiary treatment of WWTP effluent and phosphate recovery[J].Desalination and Water Treatment,2015,56:1633-1647.
[6]LIU C,WANG Q,HUANG F,et al.Removal of phosphorus from anaerobic membrane bioreactor effluent by ion exchange resin[J].Separation Science,2016,51(17):2833-2843.
[7]叶志平,李焕文,林颖.树脂法去除并回收富营养化河涌水中的磷[J].环境工程学报,2013,7(8):3025-3030.
[8]SU Y,CUI H,LI Q,et al.Strong adsorption of phosphate by amorphous zirconium oxide nanoparticles[J].Water Research,2013,47(14):5018-5026.
[9]ACELAS N Y,MARTIN B D,LPEZ D,et al.Selective removal of phosphate from wastewater using hydrated metal oxides dispersed within anionic exchange media[J].Chemosphere,2015,119:1353-1360.
[10]ZHANG T,XU H,LI H,et al.Microwave digestion-assisted HFO/biochar adsorption to recover phosphorus from swine manure[J].Science of the Total Environment,2018,621:1512-1526.
[11]LI H,CHAO S,ZHANG Y,et al.Arsenate adsorption by hydrous ferric oxide nanoparticles embedded in crosslinked anion exchanger:effect of the host pore structure[J].ACS Applied Materials&Interfaces,2016,8(5):3012-3020.
[12]SENDROWSKI A,BOYER T H.Phosphate removal from urine using hybrid anion exchange resin[J].Desalination,2013,322(4):104-112.
[13]孙耀冉,李明愉,曾庆轩,等.氨基膦酸型螯合离子交换剂的合成方法研究进展[J].离子交换与吸附,2016,32(3):280-288.
[14]YANG W,YU Z,PAN B,et al.Simultaneous organic/inorganic removal from water using a new nanocomposite adsorbent:a case study of p-nitrophenol and phosphate[J].Chemical Engineering Journal,2015,268:399-407.
[15]BLANEY L M,CINAR S,SENGUPTA A K.Hybrid anion exchanger for trace phosphate removal from water and wastewater[J].Water Research,2007,41(7):1603-1613.
[16]PITAKTEERATHAM N,HAFUKA A,SATOH H,et al.High efficiency removal of phosphate from water by zirconium sulfate-surfactant micelle mesostructure immobilized on polymer matrix[J].Water Research,2013,47(11):3583-3590.
[17]PAN B,WU J,PAN B,et al.Development of polymer-based nanosized hydrated ferric oxides(HFOs)for enhanced phosphate removal from waste effluents[J].Water Research,2009,43(17):4421-4429.
[18]ZHANG L,GAO Y,XU Y,et al.Different performances and mechanisms of phosphate adsorption onto metal oxides and metal hydroxides:a comparative study[J].Journal of Chemical Technology&Biotechnology,2016,91(5):1232-1239.
[19]HIEMSTRA T,VAN RIEMSDIJK W H.Fluoride adsorption on goethite in relation to different types of surface sites[J].Journal of Colloid and Interface Science,2000,225(1):94-104.
[20]CHEN N,FENG C,ZHANG Z,et al.Preparation and characterization of lanthanum(Ⅲ)loaded granular ceramic for phosphorus adsorption from aqueous solution[J].Journal of the Taiwan Institute of Chemical Engineers,2012,43(5):783-789.
[21]巫淼鑫,凌达仁,黄冬梅,等.红外光谱法研究螯合树脂对金属离子的选择性Ⅰ.氨基膦酸型树脂对过渡元素的选择吸附[J].离子交换与吸附,1994,10(5):398-401.
[22]张红,缪恒锋,阮文权,等.铁负载阴离子交换树脂高效除磷研究[J].环境工程学报,2015,9(1):25-31.
[23]FANJAT N,LUCAZEAU G,DIANOUX A J.Study of Na3Fe2(PO4)3and Na3Cr2(PO4)3in their paramagnetic phases by neutron scattering[J].Journal of Physics&Chemistry of Solids,1992,53(3):395-403.
[24]BUI T H,HONG S P,YOON J.Development of nanoscale zirconium molybdate embedded anion exchange resin for selective removal of phosphate[J].Water Research,2018,134:22-31.
[25]陈家凯,聂广泽,刘志英,等.树脂基纳米钛锆氧化物复合吸附剂同步去除水中磷和氟[J].环境科学,2017,38(5):1947-1956.
[26]MEZENNER N Y,BENSMAILI A.Kinetics and thermodynamic study of phosphate adsorption on iron hydroxide-eggshell waste[J].Chemical Engineering Journal,2009,147(2):87-96.
[27]CHEN L,ZHAO X,PAN B,et al.Preferable removal of phosphate from water using hydrous zirconium oxide-based nanocomposite of high stability[J].Journal of Hazardous Materials,2015,284:35-42.
[28]LIU J,WAN L,ZHANG L,et al.Effect of pH,ionic strength,and temperature on the phosphate adsorption onto lanthanum-doped activated carbon fiber[J].Journal of Colloid and Interface Science,2011,364(2):490-496.
[29]WANG Z,SHI M,LI J,et al.Influence of moderate pre-oxidation treatment on the physical,chemical and phosphate adsorption properties of iron-containing activated carbon[J].Journal of Environmental Sciences,2014,26(3):519-528.
[30]ZHOU Q,WANG X,LIU J,et al.Phosphorus removal from wastewater using nano-particulates of hydrated ferric oxide doped activated carbon fiber prepared by sol-gel method[J].Chemical Engineering Journal,2012,200:619-626.
[31]王惠松,金承钰,吕升,等.活性炭负载Fe(OH)3复合吸附剂的制备及磷吸附性能[J].实验室研究与探索,2016,35(4):22-25.