本文采用巯丙基三甲氧基硅烷(PropS-SH)对黄铁矿进行钝化处理,重点探讨了PropS-SH钝化黄铁矿的最优包膜条件,并对最优包膜条件下钝化处理的黄铁矿进行了为期4个月的淋滤实验,同时采用傅利叶红外(FI-IR)、扫描电镜(SEM)及静态水接触角等测量手段对钝化前后黄铁矿表面的化学及形貌特征进行了表征.结果表明,PropS-SH钝化黄铁矿的最佳包膜条件为:硅烷浓度10％、溶液pH 4.0、硅烷水解时间4h、硅烷水解温度40℃.在此最优包膜条件下,钝化处理的黄铁矿在为期4个月的淋滤实验中都呈现出良好的抗生物和化学氧化能力.钝化前后黄铁矿的表征结果说明,PropS-SH分子能通过化学吸附包膜于黄铁矿表面,从而使得矿物表面由亲水性变为疏水性.
参考文献
| [1] | Ata Akcil;Soner Koldas.Acid Mine Drainage (AMD): causes, treatment and case studies[J].Journal of cleaner production,200612/13(12/13):1139-1145. |
| [2] | Alejandro Sanchez-Chardi;Ciro Alberto Oliveira Ribeiro;Jacint Nadal.Metals in liver and kidneys and the effects of chronic exposure to pyrite mine pollution in the shrew Crocidura russula inhabiting the protected wetland of Donana[J].Chemosphere: Environmental toxicology and risk assessment,20093(3):387-394. |
| [3] | Axel Schippers;Dagmar Kock;Michael Schwartz.Geomicrobiological and geochemical investigation of a pyrrhotite-containing mine waste tailings dam near Selebi-Phikwe in Botswana[J].Journal of Geochemical Exploration: Journal of the Association of Exploration Geochemists,20072/3(2/3):151-158. |
| [4] | M. Benzaazoua;P. Marion;I. Picquet.The use of pastefill as a solidification and stabilization process for the control of acid mine drainage[J].Minerals Engineering,20042(2):233-243. |
| [5] | Gavin M. Mudd;Srijib Chakrabarti;Jayantha Kodikara.Evaluation of engineering properties for the use of leached brown coal ash in soil covers[J].Journal of hazardous materials,20073(3):409-412. |
| [6] | Johnson DB;Hallberg KB.Acid mine drainage remediation options: a review[J].Science of the Total Environment,20051/2(1/2):3-14. |
| [7] | Nyavor K.;Egiebor NO..CONTROL OF PYRITE OXIDATION BY PHOSPHATE COATING[J].Science of the Total Environment,19952/3(2/3):225-237. |
| [8] | V.P. Evangelou.Pyrite microencapsulation technologies: Principles and potential field application[J].Ecological engineering: The Journal of Ecotechnology,20012/3(2/3):165-178. |
| [9] | 兰叶青;黄骁;胡霭堂.有机难溶盐膜抑制黄铁矿氧化的研究[J].环境科学学报,1999(4):405-409. |
| [10] | Belzile N.;Chen YW.;Goldsack D.;Maki S..INHIBITION OF PYRITE OXIDATION BY SURFACE TREATMENT[J].Science of the Total Environment,19972(2):177-186. |
| [11] | 蔡美芳;党志;NELSON Belaile;陈雨薇.三乙烯四胺（TETA）抑制磁黄铁矿氧化的机理研究[J].环境化学,2005(5):528-532. |
| [12] | 蔡长江;卢桂宁;廖长君;陈梅芹;党志.三乙烯四胺二硫代氨基甲酸钠对黄铜矿氧化的影响[J].农业环境科学学报,2014(6):1210-1217. |
| [13] | Ouyang, Yuting;Liu, Yun;Zhu, Runliang;Ge, Fei;Xu, Tianyuan;Luo, Zan;Liang, Libo.Pyrite oxidation inhibition by organosilane coatings for acid mine drainage control[J].Minerals Engineering,2015:57-64. |
| [14] | 谭倩;陈秀杰;余涛;欧天成.离子色谱法和铬酸钡分光光度法测定水中硫酸盐的比较[J].环境卫生学杂志,2014(6):603-606. |
| [15] | 徐溢;唐守渊;滕毅;张晓凤.金属表面处理用硅烷试剂的水解与缩聚[J].重庆大学学报(自然科学版),2002(10):72-74. |
| [16] | Lee CJ.;Kim GS.;Hyun SH..Synthesis of silica aerogels from waterglass via new modified ambient drying[J].Journal of Materials Science,200211(11):2237-2241. |
| [17] | Ae-Young Jeong;Sang-Man Goo;Dong-Pyo Kim.Characterization of Hydrophobic SiO_2 Powders Prepared by Surface Modification on Wet Gel[J].Journal of Sol-Gel Science and Technology,20001/3(1/3):483-487. |
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