Abstract
AbstractThis study is focused on the biosorption of lead(II) ion onto surface of Carissa carandas and Syzygium aromaticum biomass from aqueous solution. The operating parameters, pH of solution, biomass dosage, contact time, initial metal ion concentration, and temperature considerably affect the biosorption efficiency of Pb(II). Biosorbent C. carandas leaf powder showed higher sorption efficiency than that of biosorbent S. aromaticum powder under identical experimental conditions. It was observed that the lead(II) removal percentage was found highest of 95.11% for C. carandas and 91.04% for S. aromaticum at contact period of 180 min. Also, it was observed that the regression coefficient (R2 = 0.99) for the pseudo-second-order kinetic model is higher in comparison with the pseudo-first-order kinetic model and the calculated value of qe for the pseudo-second-order kinetic model is very close to the experimental value, which indicates that it fits well with the equilibrium data for Pb(II) sorption from aque...
Highlights
Industrialization is the biggest source of heavy metals pollution in environment
The adsorption of Pb(II) onto C. carandas was best described by the Freundlich isotherm model
The purpose of the present study is to evaluate the efficiency of C. carandas and S. aromaticum as biosorbent for removal of divalent lead from aqueous solution
Summary
Industrialization is the biggest source of heavy metals pollution in environment. Contrasting organic pollutants, the mainstream of which are vulnerable to biological degradation, heavy metal ions is not degradable into undamaging end products (Gautam, Sharma, Mahiya, & Chattopadhyaya, 2015). Heavy metals have been exceptionally released into the environment due to speedy industrialization and have become a major global concern. Heavy metals like cadmium (Cd), zinc (Zn), copper (Cu), nickel (Ni), lead (Pb), mercury (Hg), and chromium (Cr) are major habitually detected in industrial wastewaters, which instigate from metal plating, mining activities, smelting, battery manufacture, tanneries, petroleum refining, paint manufacture, pesticides, pigment manufacture, printing and photographic industries, etc. It causes many dangerous diseases like encephalopathy, nephropathy, anemia, mental retardation, seizures and it forms complexes with oxo-groups in enzymes and affect the hemoglobin synthesis (Ademorati, 1996; Schümann, 1990)
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