Utilization of rice husk silica as adsorbent for BTEX passive air sampler under high humidity condition

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Publication Details

Author list: Areerob T., Grisdanurak N., Chiarakorn S.

Publisher: Springer

Publication year: 2016

Journal: Environmental Science and Pollution Research (0944-1344)

Volume number: 23

Issue number: 6

Start page: 5538

End page: 5548

Number of pages: 11

ISSN: 0944-1344

eISSN: 1614-7499

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84947104320&doi=10.1007%2fs11356-015-5768-9&partnerID=40&md5=ee1f0b951efafccfca794e65bcc4ba88

Languages: English-Great Britain (EN-GB)

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Abstract

Selective adsorbent of benzene, toluene, ethylbenzene, and xylenes (BTEX) was developed based on mesoporous silica materials, RH-MCM-41. It was synthesized from rice husk silica and modified by silane reagents. The silane reagents used in this study were trimethylchlorosilane (TMS), triisopropylchlorosilane (TIPS), and phenyldimethylchlorosilane (PDMS). Physiochemical properties of synthesized materials were characterized by small-angle X-ray diffraction (XRD), Fourier-transformed infrared spectroscopy (FTIR), and surface area analysis. Materials packed in passive air sampler were tested for BTEX uptake capacity. The tests were carried out under an influence of relative humidity (25 to 99 %). Overall, RH-MCM-41 modified by TMS outperformed compared to those modified by other silane agents. The comparative BTEX adsorption on this material and commercial graphitized carbon black was reported. ฉ 2015, Springer-Verlag Berlin Heidelberg.

Keywords

Passive air sample