Improved Combined Chemical and Biological Treatments of Olive Oil Mill Wastewaters

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• 作者：Mario Bressan ; Lolita Liberatore ; Nicola d'Alessandro ; Lucia Tonucci ; Claudia Belli ; and Giancarlo Ranalli
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2004
• 出版时间：March 10, 2004
• 年：2004
• 卷：52
• 期：5
• 页码：1228 - 1233
• 全文大小：75K
• 年卷期：v.52,no.5(March 10, 2004)
• ISSN：1520-5118

文摘

A novel system was investigated, finalized to reduce the impact of highly polluting wastewaters, andbased on combined actions of catalytic oxidations and microbial biotechnologies. Olive oil millwastewaters (COD 10 000-100 000 mg O₂/L) were oxidized up to 80-90% by stoichiometric amountsof dilute hydrogen peroxide (35%) and in the presence of water soluble iron catalysts, either Fe(II) orFe(III), at concentrations up to 1% w/w and more, i.e., much larger than those reported for conventionalFenton processes. In the combined action, the mineralization activity of a selected microbial consortiumwas used to degrade residual volatile and nonvolatile organic compounds into CO₂ and biomass.The results of this search could suggest an improved operational methodology capable to reducethe potential impact of wastewater.Keywords: Fenton's reagent; iron; hydrogen peroxide; olive oil mill wastewater; microbial degradation