TY - GEN
T1 - Biosorption of Pb(II) from aqueous solution using modified wheat straw
AU - Huang, Kai
AU - Sun, Gensheng
AU - Su, Rui
AU - Jiao, Shuqiang
AU - Zhu, Hongmin
PY - 2011/11/16
Y1 - 2011/11/16
N2 - The objective of this study was to convert wheat straw to metal ion adsorbent for waste water treatment. Ground wheat straw particles were modified with 0.5M citric acid to activate its natural adsorption capacity. The biosorption characteristics of Pb(II) onto modified wheat straw (MWS) gel, were evaluated as a function of pH, time, biomass dosage, initial concentration and temperature. Within the pH range studied (1.5-5.0), the optimal pH value suitable for the uptaking of Pb(II) was estimated at pH 5.0. Different models are used to fit experimental data and it indicates that the adsorption process follows Langmuir model and pseudo-second-order model. The maximum adsorption capacity obtained from the Langmuir model is 0.18mol kg1 for the prepared sorbent. Equilibrium time is attained at 5-10min for the studied Pb(II) ion concentrations. The present study verified that such-modified wheat straw can be used as an effective and low-cost biosorbent for removal of Pb(II) from aqueous solution.
AB - The objective of this study was to convert wheat straw to metal ion adsorbent for waste water treatment. Ground wheat straw particles were modified with 0.5M citric acid to activate its natural adsorption capacity. The biosorption characteristics of Pb(II) onto modified wheat straw (MWS) gel, were evaluated as a function of pH, time, biomass dosage, initial concentration and temperature. Within the pH range studied (1.5-5.0), the optimal pH value suitable for the uptaking of Pb(II) was estimated at pH 5.0. Different models are used to fit experimental data and it indicates that the adsorption process follows Langmuir model and pseudo-second-order model. The maximum adsorption capacity obtained from the Langmuir model is 0.18mol kg1 for the prepared sorbent. Equilibrium time is attained at 5-10min for the studied Pb(II) ion concentrations. The present study verified that such-modified wheat straw can be used as an effective and low-cost biosorbent for removal of Pb(II) from aqueous solution.
KW - Lead removal
KW - biosorption
KW - citric acid treatment
KW - modified wheat straw
UR - http://www.scopus.com/inward/record.url?scp=80955132744&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80955132744&partnerID=8YFLogxK
U2 - 10.1109/ICECENG.2011.6058124
DO - 10.1109/ICECENG.2011.6058124
M3 - Conference contribution
AN - SCOPUS:80955132744
SN - 9781424481637
T3 - 2011 International Conference on Electrical and Control Engineering, ICECE 2011 - Proceedings
SP - 3856
EP - 3859
BT - 2011 International Conference on Electrical and Control Engineering, ICECE 2011 - Proceedings
T2 - 2nd Annual Conference on Electrical and Control Engineering, ICECE 2011
Y2 - 16 September 2011 through 18 September 2011
ER -