Title :
Preparation of organic chelating agents modified bentonite for mixed contaminant removal from aqueous solutions
Author :
Sun, Yin-Xia ; Ren, Zong-Li ; Li, Ya-Qing
Author_Institution :
Sch. of Chem. & Biol. Eng., Lanzhou Jiaotong Univ., Lanzhou, China
Abstract :
Natural Na-bentonites were modified with an organic chelating agent, sodium diethyldithiocarbamatre (DDTC), to prepare a new adsorbent (DDTC-bentonite) for mixed contaminant (Cu2+, Cd2+ and phenol) removal. The optimal conditions for preparation the DDTC-bentonite were investigated. Moreover, the DDTC-bentonite showed significant adsorption for the mixed contaminant from aqueouss solution. The Langmuir and Freundlich isotherm equations were applied to the data and values of parameters of these isotherm equations were evaluated.
Keywords :
adsorption; cadmium; chemical engineering; chemical technology; clay; copper; materials preparation; organic compounds; wastewater treatment; Cd; Cu; DDTC-bentonite preparation; Freundlich isotherm equations; Langmuir isotherm equations; adsorbent; adsorption; aqueous solutions; cadmium removal; copper removal; mixed contaminant removal; natural sodium-bentonites; organic chelating agents; phenol removal; sodium diethyldithiocarbamatre; Equations; Materials; Mathematical model; Metals; Organic compounds; Surface contamination; DDTC-bentonite; adsorption isotherm; preparation;
Conference_Titel :
Geomatics for Integrated Water Resources Management (GIWRM), 2012 International Symposium on
Conference_Location :
Lanzhou, Gansu
Print_ISBN :
978-1-4673-1283-7
DOI :
10.1109/GIWRM.2012.6349601
