ABSTRACT
This chapter discusses the removal methods for simultaneous removal of Cr (VI) and azo dyes by nanomicrobiology, surface engineered nanoparticles, and nanophotocatalyst. Sorption mechanism of biochar for heavy metals and organic contaminants is also discussed. Potential microbial strains capable of simultaneous removal of Cr (VI) and azo dyes have been summarised in some details as well.
