|Title||Anaerobic co-digestion of cork based oil sorbent and cow manure or sludge|
|Author(s)||Cavaleiro, A.J.; Neves, T.M.; Guedes, A.P.; Alves, M.M.; Pinto, P.; Silva, S.P.; Machado de Sousa, Diana|
|Source||In: Wastes: Solutions, Treatments and Opportunities - Selected Papers from the 3rd Edition of the International Conference on Wastes: Solutions, Treatments and Opportunities, 2015. - CRC Press/Balkema - ISBN 9781138028821 - p. 43 - 48.|
|Event||3rd International Conference on Wastes: Solutions, Treatments and Opportunities, Wastes 2015, Viana do Castelo, 2015-09-14/2015-09-16|
|Publication type||Contribution in proceedings|
Cork, a material with great economic, social and environmental importance in Portugal, is also a good oil sorbent that can be used in the remediation of oil spills. The oil-impregnated cork can be easily removed, but requires further treatment. In the case of vegetable oil spills, anaerobic digestion may be a potential solution. This study aims to evaluate the effect of adding cork contaminated with sunflower oil as co-substrate in anaerobic digestion processes. Biodegradability assays were prepared with cow manure or sludge from a wastewater treatment plant, in the presence of five concentrations of oil-contaminated cork, between 200 and 1000 mg · L−1 as COD. Maxi-mum cumulative methane production increased with the amount of oily cork up to 41% and 101% in the assays with manure and sludge, respectively. Sporadic addition of cork contaminated with vegetable oil during anaerobic digestion of manure or sludge increases significantly the methane production of these processes.