Water contamination caused by poisonous heavy metals such as Hg(II), Cr(VI), Cd(II), and Pb(II) ions, among others, has gotten a lot of attention recently. Because of their toxicity, accumulation, and biomagnification, increasing quantities of heavy metals in the ecosystem poses a serious health risk. Lead pollution of drinking water is a serious concern due to lead pipes, plating units, and other sources. A firm covering surrounds the nut kernels in the pistachio vera shell (PVS). The current study examines the feasibility of powdered Pistachio vera shell (PVSP) - a bio waste - in sequestering Pb(II) ions after being treated with 0.1N HCl / NaOH to improve sorption efficacy (TPVSP). For material characterization, SEM, FTIR, and microscopic studies are recorded. The sorbent material's competence is experimentally verified in Batch mode under a variety of operating conditions, including particle size and dosage of TPVSP, agitation time interval between TPVSP and Pb(II) ions, initial concentrations of Pb(II) ions, pH of the adsorption medium, effects of cations, anions, and co-ions, and temperature influence on the Pb(II) – TPVSP system. Atomic Absorption Spectrophotometer is used to determine the residual amounts of Pb(II) ions in aqueous solutions (SHIMADZU-AA-6200). The adsorption capacity is described using the Langmuir and Freundlich models. To ensure the quantitative estimate of TPVSP, column experiments are undertaken, in which 40 mg TPVSP at a flow rate of 100 ml/10 mins removes 99 percent of Pb(II).
Author (S) Details
N. Muthulakshmi Andal
Department of Chemistry, PSGR Krishnammal College for Women, Coimbatore, India.
N. Shyamala Devi
Department of Chemistry, PSGR Krishnammal College for Women, Peelamedu, Coimbatore, India.
K. Vivithabharathi
Department of Chemistry, PSGR Krishnammal College for Women, Peelamedu, Coimbatore, India.
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