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Papaya (Carica Papaya) Seed As A Low-Cost Sorbent For Zinc Removal, Siew-Teng Ong, Shiau-Ping Yip, Pei-Sin Keng, Siew-Ling Lee, Yung-Tse Hung
Papaya (Carica Papaya) Seed As A Low-Cost Sorbent For Zinc Removal, Siew-Teng Ong, Shiau-Ping Yip, Pei-Sin Keng, Siew-Ling Lee, Yung-Tse Hung
Civil and Environmental Engineering Faculty Publications
The potential of using papaya seed as a sorbent for the removal of Zn from aqueous solution was investigated. The sorption characteristics of the sorbent was studied under various experimental conditions, such as pH, contact time, concentration of Zn(II), agitation rate and sorbent’s particle size. The equilibrium data have been studied using Langmuir, Freundlich and Brunauer-Emmett-Teller equations. The best correlation was obtained using Langmuir isotherm with the regression coefficient value of 0.9799 and maximum sorption capacity of 19.88 mg/g. The effective pH for the maximum uptake of Zn(II) was at pH 5.0. An increase in percentage uptake of Zn(II) can …