TY - JOUR
T1 - Application of response surface methodology for the biosorption of Acid Blue 25 dye using raw and HCl-treated macroalgae
AU - Daneshvar, Ehsan
AU - Kousha, Masoud
AU - Sohrabi, Mohammad Salar
AU - Panahbehagh, Bardia
AU - Bhatnagar, Amit
AU - Younesi, Habibollah
AU - Sternberg, Steven P.K.
N1 - Publisher Copyright:
© 2013 Balaban Desalination Publications. All rights reserved.
PY - 2015/2/6
Y1 - 2015/2/6
N2 - The present study was conducted to optimize the various experimental conditions, such as biomass loading, initial C.I. Acid Blue 25 (AB25) dye concentration, and initial solution pH for biosorption of dye on raw and HCl-treated brown alga, Padina australis and red alga, Jania adhaerens. Biosorption process was optimized in a batch system under Box–Behnken design. Second-order polynomial equation was successfully used to describe the effects of studied variables on response. The quadratic models exhibited higher R2 values, significant p-values, and insignificant lack-of-fit p-values showed high adequacy for predicting the response. Chemically modified red alga exhibited better AB25 dye biosorption capacity as compared to modified brown alga. Maximum dye removal efficiencies of 77.34, 71.28, 50.56, and 85.19% for P. australis, HCl-treated P. australis, J. adhaerens, and HCl-treated J. adhaerens, respectively, were obtained at optimal conditions. The surface modification on tested algal biomass was found to be strongly dependent on their cell wall constituents.
AB - The present study was conducted to optimize the various experimental conditions, such as biomass loading, initial C.I. Acid Blue 25 (AB25) dye concentration, and initial solution pH for biosorption of dye on raw and HCl-treated brown alga, Padina australis and red alga, Jania adhaerens. Biosorption process was optimized in a batch system under Box–Behnken design. Second-order polynomial equation was successfully used to describe the effects of studied variables on response. The quadratic models exhibited higher R2 values, significant p-values, and insignificant lack-of-fit p-values showed high adequacy for predicting the response. Chemically modified red alga exhibited better AB25 dye biosorption capacity as compared to modified brown alga. Maximum dye removal efficiencies of 77.34, 71.28, 50.56, and 85.19% for P. australis, HCl-treated P. australis, J. adhaerens, and HCl-treated J. adhaerens, respectively, were obtained at optimal conditions. The surface modification on tested algal biomass was found to be strongly dependent on their cell wall constituents.
KW - Acid Blue 25 dye
KW - Biosorption
KW - Chemical modification
KW - Macroalgae
KW - Response surface methodology
UR - http://www.scopus.com/inward/record.url?scp=84922849127&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84922849127&partnerID=8YFLogxK
U2 - 10.1080/19443994.2013.855666
DO - 10.1080/19443994.2013.855666
M3 - Article
AN - SCOPUS:84922849127
SN - 1944-3994
VL - 53
SP - 1710
EP - 1723
JO - Desalination and Water Treatment
JF - Desalination and Water Treatment
IS - 6
ER -