TITLE:
Biosorptive Removal of Lead Ions from Aqeuous Stream by Using Leaves, Stems and Roots of Momordica charantia Biomass
AUTHORS:
Badar Khan, Afifah Jabeen Khan
KEYWORDS:
Biosorption, Lead (Pb), Heavy Metal, Environment Protection, Wastewater Treatment, Momordica charantia Biomass
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.11 No.12,
December
8,
2023
ABSTRACT: Water pollution is one of the most important issues of the 21st century. It takes place when the pollutants are being entered into a water
reservoir without any treatment. Heavy metals are one of the major harmful
pollutants that exist in the water; therefore, it is necessary to remove these
toxic metals to keep our environment safe. Biosorption is an ecofriendly and
economical technique for the elimination of these toxic metals from polluted
water. In this research work roots, stems, and leaves of Momordica charantia (Bitter gourd) were used as biosorbent for the elimination of Pb (II) ions from
aqueous solution. Many different parameters such as metal ion solution pH,
biomass dosage, initial metal ions concentration and contact time were
optimized in the batch experiments. The calculated results revealed that biosorption
of Pb (II) was maximum at solution pH 5, biosorbent dosage of 0.1 g and 100 ppm
of initial metal ions concentration within 240 minutes of contact time. M.
charantia’s leaves
showed the highest level of lead biosorption capacity (47.62%), followed by stems
(42.36%) and roots (38.47%). The Freundlich isotherm and pseudo-second order
kinetics model fitted well for the analytical data. The results indicated that Momordica
charantia is an effective biosorbent for Pb (II) ions elimination from
wastewater.