000			02197 a2200313 4500
001			1138343315
005			20250317100410.0
008			250312042018xx eng
020			_a9781138343313
037			_bTaylor & Francis _cGBP 62.99 _fBB
040			_a01
041			_aeng
072	7		_aRBK _2thema
072	7		_aKNB _2thema
072	7		_aTN _2thema
072	7		_aRBK _2bic
072	7		_aKNBW _2bic
072	7		_aTN _2bic
072	7		_aSCI026000 _2bisac
072	7		_aTEC009020 _2bisac
072	7		_aTEC010030 _2bisac
072	7		_a628.3 _2bisac
100	1		_aLuis Reyes-Alvarado
245	1	0	_aOptimization of the Electron Donor Supply to Sulphate Reducing Bioreactors Treating Inorganic Wastewater
250			_a1
260			_bCRC Press _c20180912
300			_a234 p
520			_bThe main objective of this research was to optimize the electron donor supply in sulphate reducing bioreactors treating sulphate rich wastewater. Two types of electron donor were tested: lactate and slow release electron donors such as carbohydrate based polymers and lignocellulosic biowastes. Biological sulphate reduction was evaluated in different bioreactor configurations: the inverse fluidized bed, sequencing batch and batch reactors. The reactors were tested under steady-state, high-rate and transient-state feeding conditions of electron donor and acceptor, respectively. The results showed that the inverse fluidized bed reactor configuration is robust and resilient to transient and high-rate feeding conditions at a hydraulic retention time as low as 0.125 d. The biological sulphate reduction was limited by the COD:sulphate ratio (< 1.7). The results from artificial neural network modelling showed that the influent sulphate concentrations synergistically affected the COD removal efficiency and the sulphide production. Concerning the role of electron donors, the slow release electron donors allowed a biological sulphate reduction > 82% either using carbohydrate based polymers or lignocellulosic bio-wastes, in batch bioreactors. The biological sulphate reduction was limited by the hydrolysis-fermentation rate and by the complexity of the slow release electron donors.
999			_c2192 _d2192