Lead removal from synthetic wastewater by biosorbents prepared from seeds of Artocarpus Heterophyllus and Syzygium Cumini

Deen Dayal Giri, Alaa Alhazmi, Akbar Mohammad, Shafiul Haque, Neha Srivastava, Vijay Kumar Thakur, Vijai Kumar Gupta*, Dan Bahadur Pal*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The present investigation deals with removal of lead (Pb+2) ions from waste water using biosorbent prepared from seeds of Artocarpus heterophyllus (SBAh) and Syzygium cumini (SBSc). Biosorbents surface has been characterized through FT-IR spectroscopy to probe the presence of functional groups. Response surface methodology enabled optimized conditions (Pb+2 concentration 2 μg/mL, pH 5.8 and bioadsorbent dose 60 mg) resulted in Pb+2 removal ~96% for SBAh and ~93% for SBSc at agitation speed 300 rpm. The adsorption capacity has been found to be 4.93 mg/g for SBAh and 3.95 mg/g for SBSc after 70 min. At optimal experimental conditions, kinetics of biosorption was explained well by inter-particle diffusion model for SBAh (R2 = 0.99) whereas Elovich model best fitted for SBSc (R2 = 0.98). Further, both the biosorbents followed Temkin adsorption isotherm model.

Original languageEnglish
Article number132016
JournalChemosphere
Volume287
Early online date27 Aug 2021
DOIs
Publication statusFirst published - 27 Aug 2021

Keywords

  • Artocarpus heterophyllus (SBAh)
  • Bio-sorbent
  • Biochar
  • Lead removal
  • Seeds
  • Syzygium cumini (SBSc)

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