论文摘要
Coir pith is a highly potential adsorbent for adsorbing trimethylamine（TMA）. It harbors a higher adsorption capacity for TMA compared to commercial activated carbon（CAC）. It was found that lignin and holocellulose extracted from coir pith played an important role in TMA adsorption. Lignin itself had the highest TMA adsorption capacity（269.01 mg/g）followed by holocellulose（75.43 mg/g）, coir pith（14.3 mg/g） and CAC（10.26 mg/g）,respectively. The pseudo-first-and second orders were applied to the kinetic data. For the adsorption of TMA by coir pith, the best fit was achieved by the pseudo-second order.Thermodynamic studies showed an endothermic and physico-chemical adsorption process between TMA and the coir pith. TMA desorption study suggested that only 14%–47% of TMA was desorbed with distilled water. In addition, Fourier transform-infrared（FT-IR） spectra showed that C–H bond（methyl group）, C–O bond from phenolic alcohol and C–O bond from tertiary alcohol in lignin and holocellulose were involved in TMA adsorption. Coir pithbased filter showed high TMA adsorption efficiency（98%） and kept constant for more than48 days in a continuous system. Pilot scale experiment, coir pith beads filter could be succesfully applied as a packing material for TMA removal. Therefore, coir pith can be used as a promising packing material for TMA treatment at contaminated site.
论文目录
文章来源
类型: 期刊论文
作者: Nuttapong Santawee,Chairat Treesubsuntorn,Paitip Thiravetyan
来源: Journal of Environmental Sciences 2019年05期
年度: 2019
分类: 工程科技Ⅰ辑
专业: 环境科学与资源利用
单位: School of Bioresources and Technology, King Mongkut's University of Technology Thonburi,Pilot Plant Development and Training Institute, King Mongkut's University of Technology Thonburi
基金: financially supported by King Mongkut’s University of Technology Thonburi(KMUTT)through the“KMUTT 55th Anniversary commemorative fund”,the Petchra Pra Jom Klao Ph D scholarship(No.05,2557)for financially supporting Mr.Nuttapong Santawee
分类号: X701
页码: 43-53
总页数: 11
文件大小: 841K
下载量: 17