General Information
    • ISSN: 2010-0221
    • Frequency: Bimonthly
    • DOI: 10.18178/IJCEA
    • Editor-in-Chief: Prof. Dr. Shen-Ming Chen
    • Executive Editor: Mr. Ron C. Wu
    • Abstracting/ Indexing: Chemical Abstracts Services (CAS), Ulrich's Periodicals Directory, CABI, Electronic Journals Library, Google Scholar, ProQuest, and Crossref
    • E-mail:
  • Dec 06, 2017 News! Vol.8, No.6 has been published with online version. 9 peer reviewed papers are published in this issue.   [Click]
  • Oct 16, 2017 News! The papers published in Vol.8, No.4-5 have all received dois from Crossref.
Prof. Dr. Shen-Ming Chen
National Taipei University of Technology, Taiwan

IJCEA 2014 Vol.5(5): 415-419 ISSN: 2010-0221
DOI: 10.7763/IJCEA.2014.V5.420

Biosorption of Mercury onto Protonated Pistachio Hull Wastes – Effect of Variables and Kinetic Experiments

N. Rajamohan
Abstract—Batch parametric experiments were performed to study the applicability of protonated pistachio hull waste as a sorbent with respect to the effect of pH of the solution, initial metal concentration, sorbent dosage and temperature on the metal removal efficiency. Optimum conditions for mercury removal were found to be pH 7.0 and adsorbent dose - 1.0 g/L .The metal uptake increased with increase in the initial concentration of the metal. The sorption process was identified as endothermic in nature favouring use of high temperature. The kinetic studies revealed that pseudo-second order model fitted well and the constants were determined. The pseudo-second order rate constant and maximum uptake capacity were found as 1.99 × 10-3 g mg-1 min-1 and 48.78 mg g-1 with 50 mg L-1 metal concentration. Thermodynamic studies were conducted and the activation energy for the adsorption of mercury onto was found to be 10.26 KJ/ mol.

Index Terms—Absorbent, metal removal, pistachio hull waste.

N. Rajamohan is with the Department of Chemical Engineering, Faculty of Engineering, Sohar University, Sohar, Oman (e-mail:


Cite: N. Rajamohan, "Biosorption of Mercury onto Protonated Pistachio Hull Wastes – Effect of Variables and Kinetic Experiments," International Journal of Chemical Engineering and Applications vol. 5, no. 5, pp. 415-419, 2014.

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