The ability of activated carbon prepared from Papaya stem to adsorb Pb(II), Cu(II), Cr(III), Fe(II)
and Zn(II) ions from synthetic wastewater has been studied through batch experiment. Batch adsorption study
was performed to observe the effect of contact time, pH and initial metal ion concentration on adsorption of
Pb(II),Cu(II), Cr(III) , Fe(II) and Zn(II) ions from synthetic wastewater. The results obtained from the studies
reveal that, the adsorption of metal ions depends upon initial metal ion concentration, pH and contact time. The
optimum contact time, initial metal ion concentration and pH for Pb(II) is 5 hrs., 9 mg at pH 8, for Cu(II) 5 hrs,
8 mg at pH 8, for Cr(III) 5 hrs.9 mg at pH 8, for Fe(II) 5 hrs. 9 mg at pH 10 and for Zn (II) 5 hrs, 9 mg at pH 8
respectively. Langmuir and Freundlich isotherms were studied and the values obtained are in agreement with
Langmuir isotherm and better fitted to Freundlich isotherm. The aim of this work is to develop inexpensive,
easily available, effective adsorbents from papaya stem as alternative to existing commercial adsorbents.
Author Keywords:-
Adsorption, Heavy metal ions, Papaya stem Activated carbon, Synthetic wastewater
e-ISSN: 2319-183X, p-ISSN: 2319-1821 Source Type: Journal
Original Language: English
Document Type: Article
Number of pages: 04
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