Sequential treatment of cyanide and phenolic mixtures using CMC-PVP-nZVI/Pd and <i>Rhodococcus pyridinivorans</i> strain PDB9T N1.

ABSTRACT: Cyanide and phenol are considered the major toxic pollutants in coke-oven wastewater. Cyanide, at a pH less than 10, is converted to HCN gas (pK _a = 9.2). Hence, cyanide treatment requires strongly alkaline conditions, i.e., a pH of more than 10; however, at such a high pH, the viability of microbes is not feasible. Therefore, to overcome this incompatibility, a sequential nano-bio treatment system was developed, integrating a novel carboxymethyl cellulose-polyvinylpyrrolidone-stabilized nanoscale zero-valent iron doped with palladium (CMC-PVP-nZVI/Pd) nanocomposite, followed by bio-treatment using R. pyridinivorans strain PDB9T N-1. The first nanostage was operated at pH 12 to stabilize cyanide (CN^-) and initiate its removal, while the subsequent

SUBMITTER: Priyadarshini A 

PROVIDER: S-EPMC12716315 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature