Efficient biosorption of lead(II) and cadmium(II) ions from aqueous solutions by functionalized cell with intracellular CaCO3 mineral scaffolds

Bioresource Technology
Xiaoming MaKui Wang

Abstract

The functionalized Saccharomyces cerevisiae cell with biogenic intracellular CaCO3 mineral scaffold, synthesized via a simple and environmentally friendly approach, was efficient for removing lead (II) and cadmium (II) ions from aqueous solutions. The CaCO3 mineral scaffold could promote the uptake of the heavy metal ions and increase the biosorption capabilities of the adsorbent. Compared with the Freundlich isotherm, Langmuir model more fitted the equilibrium data. The maximum removal capacity of functionalized cells for Pb(II) and Cd(II) was 116.69 and 42.63mgg(-1), respectively. Further investigation showed that the adsorbent had high removal efficiency for trace amount of heavy metal ions. Adsorption data were modeled using the pseudo-first-order, pseudo-second-order and intra-particle diffusion kinetics equations. The results indicated that pseudo-second-order kinetic equation and intra-particle diffusion model could better describe the adsorption kinetics. The heavy metal ions might be removed by functionalized cells via membrane transport of metal ions and precipitation transformation.

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Citations

Nov 23, 2015·Ecotoxicology and Environmental Safety·Klaiani B FontanaGiane G Lenzi
Jul 12, 2016·Ecotoxicology and Environmental Safety·Ashutosh MishraAshwani Kumar Rai
Jun 20, 2017·Journal of Oleo Science·Atta Ul HaqSaiqa Tubbsum
Aug 10, 2017·Environmental Technology·Rauf ForoutanMohammad Mesbah
Jun 3, 2017·Journal of Applied Biomaterials & Functional Materials·Haiwen MaQiangfei Chai
Sep 19, 2017·Applied Microbiology and Biotechnology·Zaman KhanMuhammad Arif
Nov 22, 2017·Environmental Science and Pollution Research International·Tianqi WangHuilun Chen
Feb 8, 2020·Journal of Environmental Health Science & Engineering·Elsayed ElkhatibMohamed Moharem
May 17, 2018·Environmental Science and Pollution Research International·Liyuan ChaiXu Yan
May 8, 2021·Frontiers in Microbiology·Andrea FerrariniEdoardo Puglisi

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