Zdravka Velkova

Novel composite biosorbent from <i>Bacillus cereus</i> for heavy metals removal from aqueous solutions

Kostadinka Todorova, Zdravka Velkova, Margarita Stoytcheva et al. · Biotechnology & Biotechnological Equipment · 2019 · 47 citations · Full text

Engineering, Alginate Gel, Biological Waste Treatment +18

Hybrid electrochemical biosensor for organophosphorus pesticides quantification

Margarita Stoytcheva, Roumen Zlatev, Zdravka Velkova et al. · Electrochimica Acta · 2008 · 41 citations

Chemical Engineering, Engineering, Biorational Pesticide +6

Biosorption of Congo Red and Methylene Blue by pretreated waste Streptomyces fradiae biomass - Equilibrium, kinetic and thermodynamic studies

Zdravka Velkova, Gergana Kirova, Margarita Stoytcheva et al. · Journal of the Serbian Chemical Society · 2017 · 37 citations · Full text

Chemical Engineering, Fourier Transform, Engineering +14

Biosorption of Pb(II) ions from aqueous solutions by waste biomass of<i>Streptomyces fradiae</i>pretreated with NaOH

Gergana Kirova, Zdravka Velkova, Margarita Stoytcheva et al. · Biotechnology & Biotechnological Equipment · 2015 · 32 citations · Full text

Engineering, Biological Waste Treatment, Waste Mycelium +19

Analytical Characteristics of Electrochemical Biosensors

Margarita Stoytcheva, Roumen Zlatev, Zdravka Velkova et al. · Portugaliae electrochimica acta · 2009 · 26 citations · Full text