Physical removal of textile dyes from effluents and solid-state fermentation of dye-adsorbed agricultural residues

Poonam Singh - Nee Nigam, G Armour, Ibrahim Banat, D Singh, Roger Marchant, Anthony McHale, Geoffrey McMullan

Research output: Contribution to journalArticlepeer-review

566 Citations (Scopus)

Abstract

Three agricultural residues, wheat straw, wood chips and corn-cob shreds were tested for their ability to adsorb individual dyes and dye mixtures in solutions. Up to 70–75% colour removal was achieved from 500 ppm dye solutions at room temperature using corn-cob shreds and wheat straw. Increasing the temperature had little effect on the adsorption capacity of the residues. The resulting dye-adsorbed residues were found to be suitable substrates for solid-state fermentation (SSF) by two white-rot fungi; Phanerochaete chrysosporium and Coriolus versicolor. Both strains grew uninhibited and produced a maximum protein content of 16, 25 and 35 g and 19, 23 and 50 g in SSF of 100 g dry weight wood chips, corn-cob shreds and wheat straw, respectively, supplemented with ammonical nitrogen to give a C:N ratio of 20:1. This approach provides preliminary results for the remediation of textile effluent and the conversion of agricultural residues into soil conditioner.
Original languageEnglish
Pages (from-to)219-226
Number of pages8
JournalBioresource Technology
Volume72
Issue number3
Early online date8 Dec 1999
DOIs
Publication statusPublished - 31 May 2000

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