An analysis of the water soluble components of Sappi Saiccor's effluent streams

  • F Ismail School of Chemistry, University of KwaZulu-Natal, Howard College Campus, Durban 4041, South Africa
  • DA Mulholland
  • JJ Marsh


Sappi Saiccor is a pulp mill that produces high-grade chemical cellulose (dissolving pulp) from predominantly hardwood timber and is currently the world's largest manufacturer of this type of pulp. Attempts to isolate pure lignosulphonates were unsuccessful; however, an acid hydrolysis of the aqueous portion of the calcium effluent stream yielded a range of organic compounds. These included lignans, lignin-type precursors as well as small quantities of vanillin and syringaldehyde. The structures of these compounds were determined using NMR spectroscopic and mass spectrometric techniques.

Keywords: effluent, acid hydrolysis, lignan, lignosulphonates, dissolving pulp

Water SA Vol. 31(4) 2005: 569-574

Journal Identifiers

eISSN: 0378-4738