TY  - JOUR
EP  - 370
SN  - 13858947
TI  - Sorption of cadmium from aqueous solution by surfactant-modified carbon adsorbents
SP  - 365
N1  - cited By 92
AV  - none
VL  - 148
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-61849132327&doi=10.1016%2fj.cej.2008.09.010&partnerID=40&md5=ea153fb5fe72d2764f726d6e6e242924
JF  - Chemical Engineering Journal
A1  - Nadeem, M.
A1  - Shabbir, M.
A1  - Abdullah, M.A.
A1  - Shah, S.S.
A1  - McKay, G.
Y1  - 2009///
KW  - Adsorbents; Adsorption; Ammonium compounds; Anionic surfactants; Cadmium; Cadmium compounds; Cationic surfactants; Charcoal; Chemical modification; Diffusers (optical); Dyes; Isotherms; Metal recovery; Powder metals
KW  -  Adsorbent dosages; Agitation speed; Aqueous solutions; BET surface area; Carbon adsorbents; Carbon powders; Cetyl tri methyl ammonium bromides; Contact time; Enhanced surfaces; Freundlich isotherms; Langmuir adsorption isotherms; Metal concentrations; Moringa oleifera; Non-ionic surfactants; Optimized conditions; Powder activated carbons; SEM images; Sodium dodecyl sulphate; Sorption capacities; Sorption datum; Surfactants; Triton x-100
KW  -  Activated carbon
KW  -  Moringa oleifera
ID  - scholars730
N2  - Sorption capacities for cadmium, Cd(II) on indigenously prepared, steam activated, untreated, surfactant-modified carbon powder, from husk and pods of Moringa oleifera were investigated. The optimized conditions for all the experimental runs were pH 8.0 ± 0.2, temperature 30 ± 0.5 °C, contact time 120 min, agitation speed 160 rpm, initial metal concentration 30 mg L-1 and adsorbent dosage 1.0 g L-1, respectively. Maximum Cd(II) removal, 98.0 was observed when cetyltrimethyl ammonium bromide (CTAB), cationic surfactant-treated carbon was used as an adsorbent. The Cd(II) removal percentages for sodium dodecyl sulphate (SDS), anionic surfactant, Triton X-100 (non-ionic surfactant) treated and untreated powder activated carbons were found to be 95.60, 81.50 and 73.36, respectively. SEM images and BET surface area, porosity and pore volume measurements have revealed that surfactant-treated carbons have superior porosity and enhanced surface area than untreated carbons. The sorption data were correlated better with the Langmuir adsorption isotherm than Freundlich isotherm with R2 values ranging from 0.91 to 0.98. © 2008 Elsevier B.V. All rights reserved.
IS  - 2-3
ER  -