纳米/微米氧化铁对阿散酸类添加剂去除效果的影响研究
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摘要
以纳米和微米氧化铁为反应材料,研究了纳米/微米氧化铁对不同浓度阿散酸去除效果的影响.结果表明:纳米氧化铁对不同浓度阿散酸的去除效果优于微米氧化铁;当阿散酸浓度在2.5～50mg/L以及纳米氧化铁投加量为100mg/L时,去除率随初始浓度的升高而下降,整体在21.7%～62.5%;纳米和微米氧化铁氧化分解阿散酸会导致氨氮和高毒性的无机砷的释放.研究结果有助于进一步理解阿散酸类添加剂在水体中的行为.
The removal efficiency of arsanilic acid at different concentrations was investigated by using nano and micro Fe_2O_3.The results indicated that:The removal of arsanilic acid by using nano Fe_2O_3 was better than micro Fe_2O_3;When the concentration of arsenic acid was 2.5～50 mg/L and the dosage of nano-iron oxide was 100 mg/L,the removal rate decreased with the increase of initial concentration,and the total amount was between 21.7% and 62.5%;The degradation of arsanilic acid with nano and micro Fe_2O_3 led to the release of ammonia nitrogen and highly toxic inorganic arsenic.The results of the study help to further understand the behavior of azadic acid additives in water.
The removal efficiency of arsanilic acid at different concentrations was investigated by using nano and micro Fe_2O_3.The results indicated that:The removal of arsanilic acid by using nano Fe_2O_3 was better than micro Fe_2O_3;When the concentration of arsenic acid was 2.5～50 mg/L and the dosage of nano-iron oxide was 100 mg/L,the removal rate decreased with the increase of initial concentration,and the total amount was between 21.7% and 62.5%;The degradation of arsanilic acid with nano and micro Fe_2O_3 led to the release of ammonia nitrogen and highly toxic inorganic arsenic.The results of the study help to further understand the behavior of azadic acid additives in water.
引文
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[14]JOSHI T P,ZHANG G,CHENG H,et al.Transformation of para arsanilic acid by manganese oxide:Adsorption,oxidation,and influencing factors[J].Water Research,2017,116:126-134.
[15]XIE X,HU Y,CHENG H.Rapid degradation of p-arsanilic acid with simultaneous arsenic removal from aqueous solution using Fenton process[J].Water Research,2016,89:59-67.
[2]YAO L,LI G,DANG Z,et al.Arsenic speciation in turnip as affected by application of chicken manure bearing roxarsone and its metabolites[J].Plant and Soil,2009,316(1/2):117-124.
[3]ZHANG Y,YIN J,SHI Y,et al.Arsenic accumulation in two vegetables grown in soils amended with arsenic-bearing chicken manures[J].Communications in Soil Science and Plant Analysis,2012,43(12):1732-1742.
[4]NACHMAN K E,GRAHAM J P,PRICE L B,et al.Arsenic:A roadblock to potential animal waste management solutions[J].Environmental Health Perspectives,2005,113(9):1123-1124.
[5]STOLZ J F,PERERA E,KILONZO B,et al.Biotransformation of 3-nitro-4-hydroxybenzene arsonic acid(roxarsone)and release of inorganic arsenic by Clostridium species[J].Environmental Science and Technology,2007,41(3):818-823.
[6]BOLAN N,ADRIANO D,MAHIMAIRAJA S.Distribution and bioavailability of trace elements in livestock and poultry manure byproducts[J].Critical Reviews in Environmental Science and Technology,2004,34(3):291-338.
[7]FU Q L,HE J Z,BLANEY L,et al.Sorption of roxarsone onto soils with different physicochemical properties[J].Chemosphere,2016,159:103-112.
[8]TIAN C,ZHAO J,ZHANG J,et al.Enhanced removal of roxarsone by Fe3O4@3Dgraphene nanocomposites:Synergistic adsorption and mechanism[J].Environmental Science:Nano,2017,4(11),2134-2143.
[9]梅婷.典型土壤矿物对有机砷类药物吸附行为研究[D].南京:南京师范大学,2015.MEI Ting.Study on typical soil minerals on the adsorption behavior of organic arsenic drugs[D].Nanjing:Nanjing Normal University,2015.(in Chinese)
[10]JOSHI T P,ZHANG G,JEFFERSON W A,et al.Adsorption of aromatic organoarsenic compounds by ferric and manganese binary oxide and description of the associated mechanism[J].Chemical Engineering Journal,2017,309:577-587.
[11]WANG H,WANG Y N,SUN Y,et al.A microscopic and spectroscopic study of rapid antimonite sequestration by apoorly crystalline phyllomanganate:Differences from passivated arsenite oxidation[J].RSC Advances,2017,7(61):38377-38386.
[12]王华伟,李晓月,李卫华,等.pH和络合剂对五价锑在水钠锰矿和水铁矿表面吸附行为的影响[J].环境科学,2017,38(1):180-187.WANG Hua-wei,LI Xiao-yue,LI Wei-hua,et al.Effects of pH and complexing agents on Sb(Ⅴ)adsorption onto birnessite and ferrihydrite surface[J].Environmental Science,2017,38(1):180-187.(in Chinese)
[13]NASSAR N N,HASSAN A,PEREIRA-ALMAO P.Effect of the particle size on asphaltene adsorption and catalytic oxidation onto alumina particles[J].Energy&Fuels,2011,25(9):3961-3965.
[14]JOSHI T P,ZHANG G,CHENG H,et al.Transformation of para arsanilic acid by manganese oxide:Adsorption,oxidation,and influencing factors[J].Water Research,2017,116:126-134.
[15]XIE X,HU Y,CHENG H.Rapid degradation of p-arsanilic acid with simultaneous arsenic removal from aqueous solution using Fenton process[J].Water Research,2016,89:59-67.