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Lead removal from synthetic wastewater by biosorbents prepared from seeds of artocarpus heterophyllus and Syzygium Cumini

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Haque, Shafiul

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

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Elsevier Ltd

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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 mu g/mL, pH 5.8 and bioadsorbent dose 60 mg) resulted in Pb+2 removal similar to 96% for SBAh and similar to 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 (R-2 = 0.99) whereas Elovich model best fitted for SBSc (R-2 = 0.98). Further, both the biosorbents followed Temkin adsorption isotherm model.

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Keywords

Biochar, Bio-sorbent, Lead removal, Seeds, Aqueous-solution, Heavy-metals, Adsorption, PB(II), Ions, Biosorption, Efficient, Biosorbents, Kinetics, Sorption, Artocarpus heterophyllus (SBAh), Syzygium cumini (SBSc), Artocarpus heterophyllus, Syzygium cumini, Lead compounds, Artocarpu heterophylli (SBAh), Optimized conditions, Response-surface methodology, Synthetic wastewater, Syzygium cumini ((SBAh) and syzygium cumini), Diffusion, FTIR spectroscopy, Functional group, Plant, Wastewater, Wastewater treatment, Chemicals removal (water treatment)

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Haque, S. vd. (2022). "Lead removal from synthetic wastewater by biosorbents prepared from seeds of Artocarpus Heterophyllus and Syzygium Cumini". Chemosphere, 287.

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