Time filter

Source Type

Kannan N.,Center for Research and PostGraduate Studies in Chemistry | Senthilkumar P.,P.A. College
Indian Journal of Environmental Protection | Year: 2012

Studies on the removal of dye Solochrome dark blue (SDB) by adsorption onto straw carbon (SC) have been made. Effect of various experimental parameters, such as initial concentration of dye (SDB), contact time, dose of adsorbent (SC), initial pH and particle size of SC has been investigated using batch adsorption technique at room temperature (30±1°C). The percentage removal of dye-SDB increased with decrease in the initial concentration, initial pH of the solution and particle size of adsorbent (SC) and increased with the increase in the contact time and dose of adsorbent (SC). Adsorption data were modeled with the Freundlich and Langmuir adsorption isotherms and various first order kinetic equations at 30±1°C. The kinetics of adsorption is found to be first order with intra-particle diffusion as one of the rate limiting steps. The results indicate that the SC could be employed as an adsorbent material alternative to CAC in wastewater treatment for the removal of colour and dye, in general and SDB, in particular from the textile effluent. © 2012 - Kalpana Corporation.


Kannan N.,Center for Research and Postgraduate Studies in Chemistry | Veemaraj T.,Center for Research and Postgraduate Studies in Chemistry
Indian Journal of Environmental Protection | Year: 2011

The adsorption of nickel (II) ions from agricultural materials, such as lemon peel carbon (LPC), pomegranate shell carbon (PSC) and its compared with commercial activated carbon (CAC) were carried out at 3 0 ± 1 °C under various experimental conditions. The percentage removal increased with decrease in initial concentration and particle size and increase in contact time and dose of adsorbent. The adsorption is highly pH sensitive. Adsorption data were modelled with various isotherms and first order kinetic equations. Intraparticle diffusion is one of the rate determining steps. LPC and PSC could be used as low-cost adsorbents as alternative to commercial activated carbon (CAC) in effluent treatment, especially for the removal of metal ions. It is confirmed by FT-IR studies before and after adsorption. © 2011 - Kalpana Corporation.


Meenakshisundaram M.,Center for Research and Postgraduate Studies in Chemistry | Srinivasagan G.,Center for Research and Postgraduate Studies in Chemistry | Srinivasagan G.,Rajapalayam Rajus College | Kannan N.,Center for Research and Postgraduate Studies in Chemistry | And 2 more authors.
Indian Journal of Environmental Protection | Year: 2013

The removal of Victoria Blue (VB) dye in aqueous solution on Ceiba pentandra shell carbon (CPSC) has been studied by batch adsorption technique. The effect of various experimental parameters has also been investigated. The extent of dye removal increased with decrease in the initial concentration, increased with increase in contact time, amount of adsorbent and the initial pH. Adsorption data have been analyzed using the Freundlich and Langmuir adsorption isotherms and first order kinetic equations, namely Natarajan-Khalaf, Lagergren and Bhattarcharya-Venkobacher equations. The kinetics of adsorption was found to be first order with respect to intra-particle diffusion as the rate determining step. These results indicate that CPSC is one of the best adsorbent that can be used in wastewater treatment for the removal of colours and dyes. © 2013 - Kalpana Corporation.

Loading Center for Research and PostGraduate Studies in Chemistry collaborators
Loading Center for Research and PostGraduate Studies in Chemistry collaborators