pH对图水羟砷铁矾形成的影响及其除砷固砷研究
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- 论文作者：岳梦青 ; 柴立元 ; 李青竹 ; 张观石 ; 张梦雪
- 年：2016
- 作者机构：中南大学冶金与环境学院;国家重金属污染防治工程技术研究中心;
- 论文关键词：图水羟砷铁矾 ; 三价砷 ; 酸性废水
- 英文论文关键词：Tooeleite ; arsenite ; acid wastewater
- 会议召开时间：2016-12-01
- 会议录名称：第六届重金属污染防治及风险评价研讨会暨重金属污染防治专业委员会2016年学术年会论文集
- 语种：中文
- 分类号：X703
- 学会代码：HJKP
- 会议名称：第六届重金属污染防治及风险评价研讨会暨重金属污染防治专业委员会2016年学术年会
- 会议地点：中国福建厦门
- 主办单位：中国环境科学学会
- 学会名称：中国环境科学学会
- 页数：7
- 文件大小：11994k
- 原文格式：D
- 会议级别：全国
摘要
含砷废水,尤其是三价砷,严重危害了生态环境和人类健康。重新矿化法作为一种新型处理方法近年来受到关注。本文借鉴天然含三价砷矿物图水羟砷铁矾的地球化学行为,研究了不同pH条件下图水羟砷铁矾的形成,对所得沉淀进行了XRD、SEM、XPS、FTIR及粒度分布的相关表征并研究了其除砷固砷行为。结果表明,在pH1.8-4.5范围内形成了图水羟砷铁矾,高pH形成无定型砷铁矿物相。其中pH4条件下除砷率高达99%以上,所得图水羟砷铁矾颗粒尺寸大且稳定性相对较好。因此,调控形成图水羟砷铁矾的方法对于冶炼高砷酸性废水中三价砷的直接去除及稳定化有广阔的应用前景。
Wastewater containing arsenic, especially arsenite, poses a severe threat to the environment and human health. Recently, the method of remineralization has been proposed as a new type of solidification method. Inspired by the existence of natural unique mineral(tooeleite), a potential novel technique for direct removal of As(Ⅲ) by the formation of tooeleite was proposed in this study. The obtained precipitates were characterized and researched on its arsenic removal and stabilization behavior. The results showed that tooeleite can be formed in the range of pH 1.8-4.5 and higher p H lead to the formation of amorphous phase. The best arsenic removal efficiency, over 99%, was achieved in the condition of pH 4, and the particle size and stability is relatively good. Therefore, the direct removal and stabilization of arsenic in the acid wastewater by the formation of tooeleite has broad application prospects.
Wastewater containing arsenic, especially arsenite, poses a severe threat to the environment and human health. Recently, the method of remineralization has been proposed as a new type of solidification method. Inspired by the existence of natural unique mineral(tooeleite), a potential novel technique for direct removal of As(Ⅲ) by the formation of tooeleite was proposed in this study. The obtained precipitates were characterized and researched on its arsenic removal and stabilization behavior. The results showed that tooeleite can be formed in the range of pH 1.8-4.5 and higher p H lead to the formation of amorphous phase. The best arsenic removal efficiency, over 99%, was achieved in the condition of pH 4, and the particle size and stability is relatively good. Therefore, the direct removal and stabilization of arsenic in the acid wastewater by the formation of tooeleite has broad application prospects.
引文
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[21]M.Gotic,S.Music,M?ssbauer,FT-IR and FE SEM investigation of iron oxides precipitated from Fe SO4solutions,Journal of Molecular Structure,834–836(2007)445-453.
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[24]M.D.G.Luna,L.M.Bellotindos,R.N.Asiao,M.-C.Lu,Removal and recovery of lead in a fluidized-bed reactor by crystallization process,Hydrometallurgy,155(2015)6-12.
[2]W.Zhang,P.Singh,T.B.Issa,Arsenic(III)Remediation from Contaminated Water by Oxidation and Fe/Al Co-Precipitation,Journal of Water Resource and Protection,03(2011)655-660.
[3]M.J.Kim,J.Nriagu,S.Haack,Arsenic species and chemistry in groundwater of southeast Michigan,Environmental Pollution,120(2002)379-390.
[4]S.Paikaray,J.G?ttlicher,S.Peiffer,As(III)retention kinetics,equilibrium and redox stability on biosynthesized schwertmannite and its fate and control on schwertmannite stability on acidic(p H 3.0)aqueous exposure,Chemosphere,86(2012)557-564.
[5]L.G.Twidwell,K.O.Plessas,P.G.Comba,D.R.Dahnke,Removal of Arsenic from Wastewaters and Stabilization of Arsenic Bearing Waste Solids:Summary of Experimental Studies,Mineral Processing and Extractive Metallurgy Review,15(2007)237-246.
[6]W.P.Ela,A.E.Sáez,S.Kommineni,A.Dotson,Innovative Technologies for Arsenic Residuals Stabilization,in:Advancing the Science of Water,2006.
[7]刘璟,黄晰,谌书,刘娟,武长虹,人工合成图水羟砷铁矾的矿物学研究,岩石矿物学杂志,31(2012)901-906.
[8]M.Raghav,J.Shan,A.E.Sáez,W.P.Ela,Scoping candidate minerals for stabilization of arsenic-bearing solid residuals,Journal of Hazardous Materials,263,Part 2(2013)525-532.
[9]F.P.Cesbron,S.A.Williams,Tooeleite,a new mineral from the U.S.Mine,Tooele County,Utah,Mineralogical Magazine,56(1992)71-73.
[10]G.Morin,G.Rousse,E.Elkaim,Crystal structure of tooeleite,Fe6(As O3)4SO4(OH)4·4H2O,a new iron arsenite oxyhydroxy-sulfate mineral relevant to acid mine drainage,American Mineralogist,92(2007)193-197.
[11]J.Liu,S.Deng,F.Zhao,H.Cheng,R.L.Frost,Spectroscopic characterization and solubility investigation on the effects of As(V)on mineral structure tooeleite(Fe6(As O3)4SO4(OH)4·4H2O),Spectrochimica acta.Part A,Molecular and biomolecular spectroscopy,134(2015)428-433.
[12]E.P.A.U.S.,Toxicity Chracteristic Leaching Procedure(Method 1311),in,Office of Solid Waste,Washington DC.,1992.
[13]T.Jong,D.L.Parry,Evaluation of the stability of arsenic immobilized by microbial sulfate reduction using TCLP extractions and long-term leaching techniques,Chemosphere,60(2005)254-265.
[14]J.Mc Leod,A.H.J.Paterson,J.R.Jones,J.E.Bronlund,Primary nucleation of alpha-lactose monohydrate:The effect of supersaturation and temperature,International Dairy Journal,21(2011)455-461.
[15]李娜,三氯化铁除砷(III)机理,化工学报,63(2012)2224-2228.
[16]T.Nishimura,R.G.Robins,Confirmation that tooeleite is a ferric arsenite sulfate hydrate,and is relevant to arsenic stabilisation,Minerals Engineering,21(2008)246-251.
[17]S.V.Dang,J.Kawasaki,L.C.Abella,J.Auresenia,H.Habaki,P.-a.D.Gaspillo,H.Kosuge,H.T.Doan,Removal of arsenic from simulated groundwater by adsorption using iron-modified rice husk carbon,Journal of Water and Environment Technology,7(2009)43-56.
[18]C.D.Wagner,W.M.Riggs,L.E.Davis,J.F.Moulder,Handbook of X Ray Photoelectron Spectroscopy,Perkin–Elmer Corporation,1979.
[19]D.W.Oscarson,P.M.Huang,C.Defosse,A.Herbillon,Oxidative power of Mn(IV)and Fe(III)oxides with respect tp As(III)in terrestrial and aquatic environments,Nature,291(1981)50-51.
[20]P.K.Dutta,S.O.Pehkonen,V.K.Sharma,A.K.Ray,Photocatalytic Oxidation of Arsenic(III):Evidence of Hydroxyl Radicals,Environmental Science&Technology,39(2005)1827-1834.
[21]M.Gotic,S.Music,M?ssbauer,FT-IR and FE SEM investigation of iron oxides precipitated from Fe SO4solutions,Journal of Molecular Structure,834–836(2007)445-453.
[22]S.Depalma,S.Cowen,T.Hoang,H.A.Al-Abadleh,Adsorption thermodynamics of p-arsanilic acid on iron(oxyhydr)oxides:In-situ ATR-FTIR studies,Environmental Science&Technology,42(2008)1922-1927.
[23]N.Rahman,U.Haseen,Development of polyacrylamide chromium oxide as a new sorbent for solid phase extraction of As(iii)from food and environmental water samples,RSC Advances,5(2015)7311-7323.
[24]M.D.G.Luna,L.M.Bellotindos,R.N.Asiao,M.-C.Lu,Removal and recovery of lead in a fluidized-bed reactor by crystallization process,Hydrometallurgy,155(2015)6-12.