COD removal from textile industry effluent: pilot plant studies

Gavin Walker, L.R. Weatherley

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)

Abstract

This work involved the treatment of industrial waste water from a nylon carpet printing plant. As dyeing of nylon is particularly difficult, acid dyes, fixing agents, thickeners, finishing agents, are required for successful colouration and cause major problems with the plant's effluent disposal in terms of chemical oxygen demand (COD). Granular activated carbon (GAC) Filtrasorb 400 was used to treat a simulated process plant effluent containing all the pollutants. Equilibrium isotherm experiments were established and experimental data obtained showed good empirical correlation with Langmuir isotherm theory. Column experimental data, in terms of COD were correlated using the bed depth service time (BDST) model. Solid phase loading in the columns were found to approach that in equilibrium studies indicating an efficient use of adsorbent. The results from the BDST model were then used to design a pilot adsorption rig at the plant. The performance of the pilot plant column were accurately predicted by scale-up from the bench scale columns. (C) 2001 Elsevier Science BN. All rights reserved.
Original languageEnglish
Pages (from-to)125-131
Number of pages7
JournalChemical Engineering Journal
Volume84
Issue number2
Publication statusPublished - 15 Oct 2001

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Environmental Engineering

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