“…Moreover, anionic functional groups like hydroxyl, carboxyl, amine, sulfhydryl, or sulfonate amide, which are the major constituents of EPS/S-layer and cell envelop, also caused unspecific entrapment of different heavy metals (Bruins et al, 2000;Etesami, 2018). A recent study by Wani et al (2020) reported the biosorption of Cr(VI) by EPS and the biofilm-producing strain of Paenibacillus thiaminolyticus. Similarly, Upadhyay et al (2017) also reported the involvement of Chatterjee et al, 2004;Akinci et al, 2010;Edition, 2011;Lamhamdi et al, 2011;Gillis et al, 2012;Srivastava et al, 2017 Copper Chatterjee and Chatterjee, 2000;Li et al, 2009;Edition, 2011;Leyssens et al, 2017;Srivastava et al, 2017;Ozfidan-Konakci et al, 2020. Zinc (Zn) Zn(II) 3 mgL −1 in drinking water and 300 mg kg −1 in agricultural soil Sagardoy et al, 2009;Plum et al, 2010;Edition, 2011;Srivastava et al, 2017;Akanbi-Gada et al, 2019;Mossa et al, 2020.…”