Bioaccumulation of copper, zinc, cadmium and lead by Bacillus sp., Bacillus cereus, Bacillus sphaericus and Bacillus subtilis

Abstract

This work presents some results on the use of microbes from the genus Bacillus for uptake of cadmium, zinc, copper and lead ions. Maximum copper bioaccumulations were 5.6 mol/g biomass for B. sphaericus, 5.9 mol/g biomass for B. cereus and B. subtilis, and 6.4 mol/g biomass for Bacillus sp. Maximum zinc bioaccumulations were 4.3 mol/g biomass for B. sphaericus, 4.6 mol/g biomass for B. cereus, 4.8 mol/g biomass for Bacillus sp. and 5.0 mol/g biomass for B. subtilis. Maximum cadmium bioaccumulations were 8.0 mol/g biomass for B. cereus, 9.5 mol/g biomass for B. subtilis, 10.8 mol/g biomass for Bacillus sp. and 11.8 mol/g biomass for B. sphaericus. Maximum lead biomaccumulations were 0.7 mol/g biomass for B. sphaericus, 1.1 mol/g biomass for B. cereus, 1.4 mol/g biomass for Bacillus sp. and 1.8 mol/g biomass for B. subtilis. The different Bacillus strains tested presented distinct uptake capacities, and the best results were obtained for B. subtilis and B. cereus.

Fungal Biosorption for Cadmium and Mercury Heavy Metal Ions Isolated from Some Polluted Localities in KSA

“…These results showed that both Alternaria alternata and Penicillium aurantiogriseum are suitable for using as cadmium and mercury accumulators in wastewater. Similar results with respect to biosorption of cadmium and other heavy metals by fungi and bacteria have been reported earlier (Chang et al, 1997;Puranik and Paknikar, 1999;Costa et al, 2001;Pardo et al, 2003;Kefala et al, 1999;Ghoslan et al, 1999;Say et al, 2001;Watanabe et al, 2003;Ozdemir et al, 2004;Ayangbenro, and Babalola, 2017). Kumar et al, (2014) 2.55 mg/g of Cr respectively.…”

Assessing in vitro solubilization potential of different zinc solubilizing bacterial (zsb) isolates

“…The bioaccumulation of Cu, Zn Cd and Pb in the cells of Bacillus sp. Bacillus cereus, Bacillus sphaericus and Bacillus subtilis were well studied (6). After enough absorption, the excess remains in the solution.…”

The release of light metals from a brown seaweed (Sargassum sp.) during zinc biosorption in a continuous system

“…Even though the literature presents papers using bacteria (da Costa and Duta, 2001), algal cells (Schmitt et al 2001), fungi (McAfee et al 2001) and other biomaterials (Lister and Line, 2001;Schneider et al 2001), little is known about the behavior of a continuous system, for this kind of treatment. The purpose of the present work was to investigate the behavior of continuous serial reactors for the uptake of zinc.…”

“…The biomass, in this case, must be selective, reusable and cheap, thus constituting an alternative technology for residual metal ions recovery. Non living biomass of seaweeds can be used for this purpose, being an efficient treatment for heavy metals contaminated effluents.For the uptake of heavy metals two different reactor configurations can be used: continuous stirred tank reactor and fixed bed columns.Even though the literature presents papers using bacteria (da Costa and Duta, 2001), algal cells (Schmitt et al 2001), fungi (McAfee et al 2001) and other biomaterials (Lister and Line, 2001;Schneider et al 2001), little is known about the behavior of a continuous system, for this kind of treatment. The purpose of the present work was to investigate the behavior of continuous serial reactors for the uptake of zinc.…”