Pollution Research Paper

Vol.17, Issue 04, 1998; Page No.(381-384)

MODIFIED COCONUT HUSK FOR MERCURY REMOVAL FROM WASTEWATER

T.S. ANIRUDHAN AND M.K. SREEDHAR

Abstract

The adsorption technique using coconut husk has been implied for the removal or Hg (II) ions from wastewater. I he dried and powdered husk is contacted with acidified formaldehyde and the resin product so obtained is highly efficient in removing I Ig(II) ions from the solution. The extent of removal was dependent on concentration, pll and temperature of the solution. The sorbcnt is effective for the quantitative removal of 1 loin at pH 6.0. The presence 01 light metal ions interferes with the sorption of mercury. The temperature dependence indicates the endothermic nature of the process, The applicability of Freundlich isotherm to the adsorbent - lig(ll) system was tested at 30, 40, 50 and 60°C. Thermodynamic Parameters have been computed. The adsorbed mercury can be recovered using acid treatment.

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