Nature Environment and Pollution Technology

Bhanupriya Mordhiya ¹, Kailash Daga ¹, Suresh Chandra ¹, Sonia Aggarwal ¹

Affiliations
1 Environ-Industrial Laboratory, Department of Chemistry, J.N.V. University, Jodhpur-342 001, Rajasthan, IN

Abstract

The adsorption of methylene blue dye in aqueous solution on low cost adsorbent, prepared from barks of Moringa oleifera, was studied. The adsorption equilibrium isotherms have been reported. The effect of pH, contact time, adsorbent dose and initial dye concentration on adsorption process was investigated. The adsorption equilibrium data fitted both Freundlich and Langmuir isotherm equally well. Experiment was done using batch process.

Keywords

Methylene Blue Adsorption, Activated Carbon, Moringa oleifera, Adsorption Isotherms.

Full Text

   

Kailash Daga ¹, Santosh Chaudhary ¹, V. Pallavi ¹

Affiliations
1 Enviro-Industrial Lab., Department of Chemistry, M.B.M. Engineering College, J. N.V. University, Jodhpur, Rajasthan, IN

Abstract

The study was aimed at investigating the use of activated carbon prepared from Salvadora persica (ACSP) and the results were compared with the polyvinyl alcohol coated carbon prepared from Salvadora persica (PVAC-SP). Various factors affecting the adsorption process including solution pH, contact time, adsorbent dose and initial dye concentration were studied in a batch process. PVAC-SP was found to be most effective at pH 8. The kinetics of adsorption process was well described by the pseudo 2^nd order kinetics model. The maximum adsorption of dye with ACSP and PVAC-SP were found to be 71.3% and 92.7% respectively.

Keywords

Alvadora persica, Activated Carbon, Chromotrope 2R, Adsorption Isotherm

Full Text

   

Kailash Daga ¹, V. Pallavi ¹, Santosh Chaudhary ¹

Affiliations
1 Enviro-Industrial Laboratory, Deptt. of Chemistry, M.B.M. Engineering College, Jodhpur-342 011, Rajasthan, IN

Abstract

Wastewater containing heavy metal pollutants cause direct toxicity, both to human and other living organisms due to their presence beyond specified limits. Industrial effluents containing nickel play an important role in polluting water bodies. The removal of nickel ions from aqueous solution by polyvinyl alcohol coated carbon prepared from Datura stramonium as an adsorbent is reported in this paper. The effect of pH, initial metal ion concentration, contact time and adsorbent dose were studied. The adsorption capacity of Datura stramonium was dependent on the pH of the nickel solution, maximum nickel removal (78.9 %) was obtained at pH of 6. The adsorption experimental data fit well with the Langmuir and Freundlich adsorption isotherms. The kinetics of the adsorption process follows the pseudo second-order kinetics model. The results indicate that Datura stramonium can be employed as a low cost alternative to commercial adsorbents in the removal of nickel (II) from wastewater.

Keywords

Adsorption, Wastewater, Heavy Metals, Nickel, Adsorption Isotherms.

Full Text

   

Kailash Daga ¹, Poonam Gehlot ¹

Affiliations
1 Enviro-Industrial Laboratory, Department of Chemistry, M. B. M. Engineering College, Jai Narain Vyas University, Jodhpur-342 001, Rajasthan, IN

Abstract

The aim of the work is to study the adsorption of surfactants onto adsorbents in a batch adsorber. A comparative evaluation of the low cost and biodegradable naturally occurring adsorbents of plant origin as potential adsorbent is made against poly vinyl alcohol coated charcoal for removal of surfactants from aqueous solution. Batch kinetic and isotherm experiments were conducted to determine the adsorptive behaviour of the surfactant from aqueous solution.

Full Text