Evaluation of UV-A and solar light photocatalytic hydrogen gas evolution from olive mill wastewater
作者： Andrea Speltini , Michela Sturini , Federica Maraschi , Daniele Dondi , Gabriele Fisogni
DOI: 10.1016/J.IJHYDENE.2015.01.182
关键词:
摘要: Abstract This work presents the results obtained in using olive mill wastewater (OMW) as sacrificial agent for photocatalytic H 2 evolution from water, at ambient temperature and pressure. The effects of irradiation time, catalyst amount, pH, OMW concentration have been investigated. Under best experimental conditions (4 h UV-A irradiation, 2 g L −1 Pt/TiO , 3.3% v/v, COD 944 mg L pH 3) up to 44 μmol were generated aqueous samples. Consecutive cycles (4 × 4 h) on same sample provided ca. 280 μmol corresponding 82% yield observed, under value, by glucose test agent. was strongly improved (+81%) pre-treating with magnesium silicate (125 g L 6 h contact), achieving a production 80 μmol 4 h irradiation. possibility exploit sunlight process gained Eosin Y/Pt/TiO . solar light resulted be 66% respect that radiation. Beside some general mechanistic aspects process, benefits drawbacks recycling water highlighted.
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