Adsorption of Pb (II) Ions from Aqueous Solution by Citric Acid Modified and Unmodified Cucumeropsis manii (Melon) Pod Husks

Authors

  • J. I. Opurum
  • G .A. Cookey
  • C. C. Obunwo

Abstract

In this study, the biosorption of Pb(II) ion was studied in a batch sorption  method using 1.0M citric acid modified (CA-CM) and unmodified (UCM) Cucumeropsis manii  pod husk as low cost adsorbent. The influence of different parameters such as pH of the solution, initial concentration of metal ion and contact time was observed. The optimum pH was 6. The percentage removal of Pb(II) ion increased with increase in initial concentration of the metal ions. For the effect of contact time, the CA-CM adsorbent removed higher percentage (97%) of Pb (II) ion than the UCM adsorbent (77%) within an interval of 10 mins. Langmuir isotherm fitted the adsorption data better than Freundlich and Dubinin-Radushkevsich adsorption models and suggests physisorption. The adsorption capacity values determined from the three isotherm modelled were higher for the CA-CM than the UCM adsorbent. The result obtained show that the citric acid modified melon pod husk biomass is a good adsorbent for Pb(II) ion in aqueous solution.

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Published

2019-11-04

How to Cite

Opurum, J. I., Cookey, G. .A., & Obunwo, C. C. (2019). Adsorption of Pb (II) Ions from Aqueous Solution by Citric Acid Modified and Unmodified Cucumeropsis manii (Melon) Pod Husks. Journal of Chemical Society of Nigeria, 44(6). Retrieved from http://www.journals.chemsociety.org.ng/index.php/jcsn/article/view/369

Issue

Vol. 44 No. 6 (2019)

Section

Articles

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Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution (CC-BY) 4.0 License that allows others to share the work with an acknowledgment of the work’s authorship and initial publication in this journal.