TY - JOUR
T1 - Lead removal efficiency using biosorbents as alternative materials for permeable reactive barriers
AU - Soto-Rios, Paula Cecilia
AU - Nakano, Kazunori
AU - Fujibayashi, Megumu
AU - Leon-Romero, Marco
AU - Nishimura, Osamu
PY - 2014
Y1 - 2014
N2 - As alternative materials for heavy metal removal, this study investigated biosorbents to determine their suitability for permeable reactive barriers. The lead removal efficiencies of brown seaweed (Undaria pinnatifida) and reed (Phragmites australis) were determined under different conditions (batch and column system). The experimental results for these biomaterials fitted the Langmuir isotherm with high correlation values. It was verified that the influence of temperature on affinity was higher than that on adsorption capacity. While the lead removal efficiency of U. pinnatifida was higher than of P. australis in the batch experiments, lead removal efficiency decreased for both materials at approximately the same time in the column experiments. This indicates that the dominance of the chemical and physical adsorption mechanisms could result in differences in these systems.
AB - As alternative materials for heavy metal removal, this study investigated biosorbents to determine their suitability for permeable reactive barriers. The lead removal efficiencies of brown seaweed (Undaria pinnatifida) and reed (Phragmites australis) were determined under different conditions (batch and column system). The experimental results for these biomaterials fitted the Langmuir isotherm with high correlation values. It was verified that the influence of temperature on affinity was higher than that on adsorption capacity. While the lead removal efficiency of U. pinnatifida was higher than of P. australis in the batch experiments, lead removal efficiency decreased for both materials at approximately the same time in the column experiments. This indicates that the dominance of the chemical and physical adsorption mechanisms could result in differences in these systems.
UR - http://www.scopus.com/inward/record.url?scp=84905988742&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84905988742&partnerID=8YFLogxK
U2 - 10.2166/wst.2014.223
DO - 10.2166/wst.2014.223
M3 - Article
C2 - 25051478
AN - SCOPUS:84905988742
SN - 0273-1223
VL - 70
SP - 307
EP - 314
JO - Water Science and Technology
JF - Water Science and Technology
IS - 2
ER -