Removal of Lead and Zinc from Industrial Waste water by Amla leaves Nano-bioadsorbent

Authors

  • Nimisha Jadon Assistant Professor School of Studies in Environmental Chemistry, Jiwaji University, Gwalior, Madhya Pradesh
  • Bharti Goyal Research Scholar, Department of Chemistry, Kamla Raja Girls Government Post Graduate College, Gwalior Madhya Pradesh
  • Manoj Goyal Assistant Professor, Department of Pharmacy IPS College, Gwalior, Madhya Pradesh,

Abstract

In the present research work, amla leaves (Phyllanthusemblica) were used for preparing nanobioadsorbent to remove heavy metals viz. Lead (Pb) and Zinc (Zn) present in wastewater. The major advantage of using amla leaves as bioadsorbent is its easy availability, abundance, low cost, biodegradable and eco-friendly nature. Prepared bioadsorbent was characterized by infrared spectroscopy (IR), SEM and BET techniques. Variation in the experimental conditions such as pH, adsorbent dosage, stirring speed and contact time, were analysed at 30oC by UV-visible spectrophotometer at wavelength 479nm for Pb and 597nm for Zn. The rate of adsorption was studied under different conditions, including pH (Britton Robinson Buffer range 2-12), adsorbent dose (0.5g-
2g), contact time (0-60 min) and metal ions initial concentration (25ppm-100ppm). The maximum percentage removal of Pb and Zn were 97.4 % and 99% respectively by keeping the optimum experimental conditions such as initial metal ion concentration of 25 ppm, pH 8, adsorbent dose 1.5g, contact time 60 min etc. Results also showed that the percentage uptake of Pb and Zn decreased
gradually as the concentration increased from 25 to 100 ppm. The adsorption data were well studied for adsorption isotherms and kinetic models and followed the first order kinetics and best fitted to langumir and frendulich adsorption isotherm.

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Published

2022-05-31

Issue

Vol. 9 No. 1 (2022)

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