Removal of Cu(II) and Fe(III) from aqueous solutions by dead sulfate reducing bacteria

Bio-mediated detoxification of heavy metal contaminated soil and phytotoxicity reduction using novel strain of Brevundimonas vancanneytii SMA3

“…Moreover, the peak in the 800-1000 cm −1 range may have been the consequence of carboxylic group ion exchange. Similar to this study, Quan et al [ 42 ] reported that the biosorption process of heavy metal involve hydroxyl, carboxyl and amine functional groups. Microorganisms employ various mechanisms to mitigate the toxicity of heavy metals, such as forming bonds between their cell surfaces and metal ions [ 52 , 53 ].…”

“…Subsequent to centrifugation, the collected solid residue (bacterial biomass) underwent FTIR analysis to investigate the interaction between heavy metals and the functional groups present on the selected bacteria. By utilizing the control as a reference in KBr, a comparison was made between the analysis of the treated sample and its distinct peaks indicative of various bond stretching and bending motions [ 42 ]. The spectral wave numbers (cm −1 ) for the FTIR peaks ranged from 4000 to 400 cm −1 .…”

Removal of copper from copper-contaminated river water and aqueous solutions using Methylobacterium extorquens modified Erzurum clayey soil

“…Z-90 has the ability to adsorb maximum Cu at pH 5 which is similar to our results and similar to the results of Quan et al, and adsorption occurs at pH ranges from 3-6. This pH range is widely accepted as being optimal for metal uptake of almost all types of adsorbent (Quan et al 2013, Elouear et al 2008). …”

“…Temperature affects the adsorption rate by altering the molecular interactions and the solubility of the adsorbate (Quan et al 2013). The effect of temperature infl uencing the adsorption has been studied in the range of 20-80°C.…”