Article In: orcid

Influence of salts and phenolic compounds on olive mill wastewater detoxification using superabsorbent polymers.

Bioresource Technology

L DAVIES; Susete M. Martins-Dias; Novais, J.M. — 2004 — Elsevier

Key information

Authors:

L DAVIES (Luísa Teresa Pires Grancho Caetano Davies); Susete M. Martins-Dias (Susete Maria Martins Dias); Novais, J.M. (Júlio Maggiolly Novais)

Published in

December 2004

Abstract

For a selection of nine commercially available superabsorbent polymers, the absorption capacity was evaluated for the principal absorption-inhibition constituent of OMW, mineral salts and for phytotoxic-components, the phenolic compounds. A double exponential model was established for electrical conductivities ranging 4.2-25,000 microS cm(-1). For solutions of phenolic compounds ranging 0-0.5 g l(-1), a distribution coefficient near unit was achieved, while for OMW, the phenolic compounds were concentrated inside the gel as the distribution coefficient was 1.4. Correction of OMW pH towards neutrality was found to increase the absorption capacity by up to 35%. The phytotoxicity was assessed by the germination of Lepidium sativum. Inhibition in plant growth occurred for all OMW dilutions without superabsorbent polymers application. For 5% of OMW (COD 5 gl(-1) and 200 ppm of phenolic compounds) immobilised in PNa2 (1 gl(-1)), plant growth was promoted being observed a 120% growth germination, thus indicating that olive mill wastewater detoxification occurred.

Publication details

Authors in the community:

Publisher

Elsevier

Title of the publication container

Bioresource Technology

First page or article number

259

Last page

268

Volume

95

Issue

3

DOI

10.1016/J.BIORTECH.2004.02.027

Fields of Science and Technology (FOS)

environmental-engineering - Environmental engineering

Keywords

  • Olive Mill Wastewaters
  • Detoxification
  • Superabsorbent polymers
  • Phenolic compounds
  • Phytoxicity tests

Publication language (ISO code)

eng - English

Rights type:

Restricted access