- Tytuł:
- Optimization and equilibrium studies of Pb(II) removal by Grewia Asiatica seed: a factorial design approach
- Autorzy:
-
Siyal, A. N.
Memon, S. Q.
Khaskheli, M. I. - Powiązania:
- https://bibliotekanauki.pl/articles/778329.pdf
- Data publikacji:
- 2012
- Wydawca:
- Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
- Tematy:
-
optymalizacja
usuwanie Pb(II)
odpady nasion Grewiii
metodologia powierzchni odpowiedzi
badania równowagi
biosorpcja
optimization
Pb(II) removal
Grewia seed waste
response surface methodology
factorial design
equilibrium studiem
biosorption - Opis:
- This study aims to explore the efficiency of an agro waste material for the remediation of Pb(II) contaminated water. A factorial design approach is adopted to optimize removal efficiency and to study the interaction between effective variables. A face-centered Draper-Lin composite design predicted 100% removal efficiency at optimum variables; pH 8, initial concentration of Pb(II) ion 12mg/L, sorbent dose 200mg and agitation time 110 min. Regration coefficient (R2 = 99.9%) of a plot of the predicted versus the observed values and p value (>0.05) confirms the applicability of the predicted model. Langmuir and Dubinin-Radushkevich (D-R) isotherm models were applicable to sorption data with the Langmuir sorption capacity of 21.61š0.78 mg/g. The energy of sorption was found to be 13.62š0.32 kJ/mol expected for ion-exchange or chemisorption nature of sorption process. Characterization of Grewia seed suggested a possible contribution of carboxyl and hydroxyl groups in the process of biosorption. The present study shows that Grewia seeds can be used effectively for the remediation of Pb(II) contaminated water.
- Źródło:
-
Polish Journal of Chemical Technology; 2012, 14, 1; 71-77
1509-8117
1899-4741 - Pojawia się w:
- Polish Journal of Chemical Technology
- Dostawca treści:
- Biblioteka Nauki
Artykuł