TY - JOUR
T1 - Removal of arsenic(V) onto chitosan
T2 - From sorption mechanism explanation to dynamic water treatment process
AU - Gérente, C.
AU - Andrès, Y.
AU - McKay, G.
AU - Le Cloirec, P.
PY - 2010/4/15
Y1 - 2010/4/15
N2 - The aim of this work consists in a feasibility study to understand how arsenate ions could be removed from contaminated water by sorption onto chitosan, a biopolymer extracted from the wastes of the seafood industries. Firstly, a batch adsorption study investigates different models, namely Langmuir, Freundlich, Tempkin, and Redlich-Peterson. The sorption mechanism is shown to be sorption by an electrostatic attraction, with thermodynamic parameters indicating an exothermic and spontaneous reaction. The main influencing parameters are the temperature, the pH and the presence of other ions. Secondly, a semi-dynamic membrane process is proposed: a stirred batch reactor is coupled with a microfiltration immersed-membrane. A mass balance model is used to describe the adsorption process and the breakthrough curves are well simulated.
AB - The aim of this work consists in a feasibility study to understand how arsenate ions could be removed from contaminated water by sorption onto chitosan, a biopolymer extracted from the wastes of the seafood industries. Firstly, a batch adsorption study investigates different models, namely Langmuir, Freundlich, Tempkin, and Redlich-Peterson. The sorption mechanism is shown to be sorption by an electrostatic attraction, with thermodynamic parameters indicating an exothermic and spontaneous reaction. The main influencing parameters are the temperature, the pH and the presence of other ions. Secondly, a semi-dynamic membrane process is proposed: a stirred batch reactor is coupled with a microfiltration immersed-membrane. A mass balance model is used to describe the adsorption process and the breakthrough curves are well simulated.
KW - Arsenic
KW - Biosorption
KW - Environmental chemical engineering
KW - Water treatment
UR - http://www.scopus.com/inward/record.url?scp=77649336940&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2010.02.005
DO - 10.1016/j.cej.2010.02.005
M3 - Article
AN - SCOPUS:77649336940
SN - 1385-8947
VL - 158
SP - 593
EP - 598
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
IS - 3
ER -