Optimization of the Electron Donor Supply to Sulphate Reducing Bioreactors Treating Inorganic Wastewater

Optimization of the Electron Donor Supply to Sulphate Reducing Bioreactors Treating Inorganic Wastewater
Author :
Publisher : CRC Press
Total Pages : 350
Release :
ISBN-10 : 9780429799280
ISBN-13 : 0429799284
Rating : 4/5 (80 Downloads)

Book Synopsis Optimization of the Electron Donor Supply to Sulphate Reducing Bioreactors Treating Inorganic Wastewater by : Luis Carlos Reyes-Alvarado

Download or read book Optimization of the Electron Donor Supply to Sulphate Reducing Bioreactors Treating Inorganic Wastewater written by Luis Carlos Reyes-Alvarado and published by CRC Press. This book was released on 2018-09-03 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 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 ( 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.


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