Study of cyanide removal from contaminated water using zinc peroxide nanomaterial

作     者：Himani Uppal S. Swarupa Tripathy Sneha Chawla Bharti Sharma M.K. Dalai S.P. Singh Sukhvir Singh Nahar Singh 

作者机构：CSIR-National Physical Laboratory New Delhi 110012 India Electronic Science Kurukshetra University Kurukshetra Haryana 136119 India Academy of Scientific and Innovative Research (AcSIR) India 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2017年第29卷第5期

页      面：76-85页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：U.G.C New Delhi for the financial support through JRF(No.116459) 

主　　题：Cyanide Zinc peroxide Adsorption Ion chromatograph 

摘      要：The present study highlights the potential application of zinc peroxide （ZnO2） nanomaterial as an efficient material for the decontamination of cyanide from contaminated water. A process patent for ZnO2 synthesis has been granted in United States of America （US Patent number 8,715,612; May 2014）, South Africa, Bangladesh, and India. The ZnO2 nanomaterial was capped with polyvinylpyrrolidone （PVP） to control the particle size. The PVP capped ZnO2 nanomaterial （PVP-ZnO2） before and after adsorption of cyanide was characterized by scanning electron microscope, transmission electron microscope, X-ray diffractorneter, Fourier transform infrared spectroscopy and time of flight-secondary ion mass spectrom- etry. The remaining concentration of cyanide after adsorption by PVP-ZnO2 was determined using ion chromatograph. The adsorption of cyanide over PVP-ZnO2 was also studied as a function of pH, adsorbent dose, time and concentration of cyanide. The maximum removal of cyanide was observed in pH range 5.8-7.8 within 15 rain. The adsorption data was fitted to Langmuir and Fruendlich isotherm and it has been observed that data follows both the isotherms and also follows second order kinetics.