000			02225 a2200313 4500
003			UNISSA
005			20241112160929.0
008			241112b |||||||| |||| 00| 0 eng d
020			_a0859541169 (paperback)
040			_aUNISSA _beng _cUNISSA _erda
050			_aTP443 _bC458
100			_aChittenden A. E. _eAuthor
245			_aAnaerobic digesters for small-scale vegetable processing plants / _cby A. E. Chittenden, S. W. Head and G. Breag
264	0	1	_bTropical Products Institute _c1980 _aLondon :
264	0	4	_c©1980
300			_av, 22 pages ; _bIllustrations ; _c30 cm
336			_2rdacontent _atext
337			_2rdamedia _aunmediated
338			_2rdacarrier _avolume
500			_aIncludes tables
504			_aIncludes bibliographical references
505			_aThe work described in this report relates solely to the digestion of vegetable materials for biogas production for small industrial purposes. It was undertaken with the aim of obtaining practical experience in both biogas digester design and operation with the possible application of the process to waste products from cassava peelings. The digester used in these studies was designed for continuous operation and was approximately 3 m³ in volume. It proved impracticable to operate the digester below 30°C whilst still obtaining worthwhile gas production. The operating temperature was therefore kept above that commonly found in tropical countries. As it was not possible to obtain cassava residues in sufficient quantities to operate this plant, potatoes (Solanum tuberosum) were utilised as a substitute. To compare these results to operation on cassava, experiments were also carried out in a 5 litre fermentation vessel operating at 35°C on potatoes, peeled cassava tubers and cassava peelings. The report gives details of the rate of gas production and performance of the plant (3 m³) under various operating conditions. Energy requirements for the process are also considered.
650			_aAnaerobic digestion
650			_aFood industry and trade _xWaste disposal
650			_aSewage _xPurification _xBiological treatment
700			_aHead, S. W. _eAuthor
700			_aBreag, G. _eAuthor
942			_cSINAUT _2lcc
999			_c39816 _d39816