Title :
The performance of the CTMAB-DTPA modified bentonite as a sorbent for Cu2+, Cd2+ and phenol
Author :
Sun, Yin-Xia ; Ren, Zong-Li ; Xing, Jian
Author_Institution :
Sch. of Chem. & Biol. Eng., Lanzhou Jiaotong Univ., Lanzhou, China
Abstract :
CTMAB-DTPA-bentonite (hexadecyl trimethyl ammonium bromide-diethylene triamine pentaacetic acid-bentonite) was synthesized by placing alkylammonium cation and organic chelating agents onto bentonite. The simultaneous adsorption of organic pollutant (phenol) and heavy metals (Cu2+ and Cd2+) mixed contaminant on CTMAB-DTPA-bentonite was investigated. The CTMAB-DTPA-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 :
cadmium; contamination; copper; purification; wastewater treatment; CTMAB-DTPA modified bentonite; Cd2+; Cu2+; Freundlich isotherm equation; Langmuir isotherm equation; alkylammonium cation; aqueous solution; heavy metal; hexadecyl trimethyl ammonium bromide-diethylene triamine pentaacetic acid-bentonite; mixed contaminant; organic chelating agent; organic pollutant adsorption; phenol; wastewater purification; Equations; Ions; Mathematical model; Metals; Organic compounds; Surface contamination; adsorption isotherm; modified bentonite; simultaneous adsorption;
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.2012.6349600
