M
M. Helen Kalavathy
Researcher at Anna University
Publications - 15
Citations - 989
M. Helen Kalavathy is an academic researcher from Anna University. The author has contributed to research in topics: Adsorption & Activated carbon. The author has an hindex of 7, co-authored 12 publications receiving 874 citations.
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Kinetic and isotherm studies of Cu(II) adsorption onto H3PO4-activated rubber wood sawdust
TL;DR: Adsorption mechanism studies revealed that the process was complex and followed both surface adsorption and particle diffusion and the rate-controlling parameter and effective diffusion coefficient were determined using the Reichenberg plot.
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Modelling, analysis and optimization of adsorption parameters for H3PO4 activated rubber wood sawdust using response surface methodology (RSM).
TL;DR: The pseudo-second-order model was found to explain the kinetics of Cu(2+) adsorption most effectively and is found to be the optimum conditions for the maximum uptake of copper ions in batch mode.
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Moringa oleifera - a solid phase extractant for the removal of copper, nickel and zinc from aqueous solutions.
TL;DR: In this article, the effects of various operating variables such as solution pH, contact time, carbon dose, adsorbate concentration and temperature on the removal of metal ions have been studied.
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Comparison of copper adsorption from aqueous solution using modified and unmodified Hevea brasiliensis saw dust
TL;DR: In this article, a modified rubber wood (Hevea brasiliensis) saw dust (RSD) was modified using phosphoric acid and sodium hydroxide with different impregnation ratios (IR) to improve adsorption capacity for the removal of copper from aqueous solutions.
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Chemically activated Ipomoea carnea as an adsorbent for the copper sorption from synthetic solutions
TL;DR: An indigenously prepared zinc chloride activated Ipomoea carnea (morning glory), a low-cost and abundant adsorbent, was used for removal of Cu(II) ions from aqueous solutions in a batch adsorption system as mentioned in this paper.