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Effects of biologic...
Abstract
Ämnesord
Stäng
- Effluent from a TMP-based pulp and paper mill was collected at the inlet and outlet of the mill's biological treatment plant and fractionated by sorption on XAD-8 resin and MTBE precipitation. Fractionation indicated that the refractory dissolved organic material in biologically treated effluent was mainly composed of lignin-related substances. Characterisation of the lignin-related substances by chromatographic and spectrometric methods confirmed the similarities of the isolated material and milled wood lignin. Fractionation and characterisation of alkali-extracted material from solids (biosludge) in biologically treated effluent found evidence of lignin-related material. Results indicated that biological treatment had altered the chemical structure and molar-mass distribution of dissolved lignin-related substances.
Nyckelord
- wastewater treatment
- biodegradability
- thermomechanical pulping
- lignin
- COD
- chromatography
- spectrometry
- thermally assisted hydrolysis
- paper-mill
- waste-water
- self-diffusion
- spectrometry
- pyrolysis
- removal
- wood
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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