SAPPI SAJCCOR, whose factory is situated south of Durban, South Africa, is one of the
few paper and pulp mills that uses the acid sulphite process with calcium and magnesium
bases to produce a high-grade cellulose pulp. Four streams of effluent, namely, the
calcium - spent liquor stream, the magnesium condensate stream and two streams from
the bleaching effluent are produced during this sulphite pulping process and they contain
a variety of organic compounds extracted from the wood. Characterisation of the effluent
was based on isolation using column chromatography and identification using NMR
techniques.
A range of constituents, such as lignans and lignin - type precursors, a trilerpenoid and
fatty acids were isolated and identified. X-ray diffraction was used to identify an
inorganic residue obtained from the calcium - spent liquor stream and gas
chromatography/mass spectrometry was used to identify a wax residue. which builds up
in the process. In addition to this, the carbohydrate content of the four streams of effluent
was detennined using UV/visiblc spectroscopy. / Thesis (M.Sc.)-University of Natal, Durban, 2001.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:ukzn/oai:http://researchspace.ukzn.ac.za:10413/5610 |
| Date | January 2001 |
| Creators | Moodley, Brenda. |
| Contributors | Marsh, Jeremy J., Mulholland, Dulcie A. |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis |
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