• POIBA VENKATA RAO
• CHIRANJEEVI KALESH POSINA

Urbanization and industrialization leads to migration of heavy metals from industrial waste to underground water is deteriorating human beings life and sustainability. Perhaps the plant biomass is an economical and readily available as biosorbent for the biosorption of lead ions from aqueous solutions. Present experimental work comprising of the equilibrium, kinetics and thermodynamic study for biosorption of lead ions from aqueous solution using ‘Cassia siamea pods powder’ as a biosorbent in a batch process. The plant ‘Cassia siamea’ (common name: sima tangedu) is obtained from Andhra University campus, visakhapatnam, andhrapradesh, India. The biosorption process was carried out in batch process by varying six parameters: Agitation time, biosorbent size, biosorbent dosage, pH of the aqueous solution, Initial Pb ion concentration and temperature of the process. The results shows that biosorption of lead is augmented with an increase in biosorbent dosage(optimum dosage 35 g/L) , equilibrium agitation time(40 minutes) and at pH 6, the maximum biosorption of lead (83.5787 %) onto cassia siamea pods powder is observed. And present experimental data was well suited to Langmuir isotherm model(R2=0.99889) over Freundlich and Temkin isotherm models. The thermodynamic data shows that % biosorption of lead is increased with an increase in temperature.

Biosorption, heavy metals, concentration, PH, equilibrium time, isotherms.

"Performance and optimization of cassia siamea pods powder for the removal of heavy metals(lead) by using biosorption ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.502-517, June 2019, Available :http://www.jetir.org/papers/JETIR1908231.pdf

"Performance and optimization of cassia siamea pods powder for the removal of heavy metals(lead) by using biosorption ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp502-517, June 2019, Available at : http://www.jetir.org/papers/JETIR1908231.pdf