Anaerobic recycling of prehydrolysate generated during the manufacture of rayon grade pulp

Anaerobic treatment of prehydrolysate from eucalyptus stems has been explored using active seed cultures (vol. 5 litres) from cattle dung, poultry waste and domestic sewage sludge. While the cattle dung reduced chemical oxygen demand (COD) by 28% and generated 100 litres of biogas containing 50% CH...

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Bibliographic Details
Published in:Technovation 1994-10, Vol.14 (8), p.549-557
Main Authors: Rajor, A., Garg, R.P., Sharma, R.K., Kothari, R.M.
Format: Article
Language:English
Subjects:
Agricultural production
Biogas
Biotechnology
Chemical oxygen demand
Comparative analysis
Poultry
Recycling
Studies
Waste materials
Water treatment
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Summary:Anaerobic treatment of prehydrolysate from eucalyptus stems has been explored using active seed cultures (vol. 5 litres) from cattle dung, poultry waste and domestic sewage sludge. While the cattle dung reduced chemical oxygen demand (COD) by 28% and generated 100 litres of biogas containing 50% CH 4, poultry waste reduced COD by 55% and generated a total of 37 litres of gas, containing 54% CH 4. On the basis of (a) higher COD reduction and (b) biogas generation, poultry waste and cattle dung were superior inocula, respectively. Domestic sewage sludge was an inferior inoculum for methane generation. Upon biogas generation, both the effluents (with reduced COD) showed promising application in agriculture, suggesting that recycling of prehydrolysate in biogas and agricultural production was feasible.
ISSN:0166-4972
1879-2383
DOI:10.1016/0166-4972(94)90153-8