@inproceedings{9569b8f906a3488badf9c6bc99dda40a,
title = "Effects of acid and heat treatments on the structure of sepiolite and its adsorption of tannin",
abstract = "In this paper, it was investigated the changes of structure of sepiolites under different conditions of acid treatments and heat treatments using fourier transform infrared spectroscopy(FTIR). At the same time, through the tannin adsorption experiments, it was studied the changes adsorption properties of sepiolites by acid treatments and heat treatments. The H 2SO 4 treatment was found to be more effective for the removal of tannin than HCl and HNO 3 treatments. With increasing the acid concentration and acid treatment time of H 2SO 4, the removal rates and adsorption capacity of tannin by sepiolites were first increased and then decreased. The removal rates and adsorption capacity were 61.0\% and 23.7mg/g when the acid concentration was 4.0mol/l. And the removal rates and adsorption capacity were 62.5\% and 24.3mg/g when the acid treatment time was 16 hours. The calcinations treatment exhibited significant effects on the adsorption of tannin. The removal rates and adsorption capacity were 77.9\% and 30.8mg/g when the calcined temperature was 400°C. However, when the calcined temperature was 700°C, the removal rates and adsorption capacity were only 54.1\% and 20.8mg/g.",
keywords = "Acid treatments, Adsorption, Heat treatments, Sepiolite, Tannin",
author = "Chengyuan Su and Weiguang Li and Menglin Chen",
year = "2012",
doi = "10.4028/www.scientific.net/AMR.518-523.728",
language = "英语",
isbn = "9783037854167",
series = "Advanced Materials Research",
pages = "728--731",
booktitle = "Advances in Environmental Science and Engineering",
note = "1st International Conference on Energy and Environmental Protection, ICEEP 2012 ; Conference date: 23-06-2012 Through 24-06-2012",
}