一种用于处理两相生产工艺中橄榄油厂废水的具有铁磁核心的新型光催化剂。
A novel photocatalyst with ferromagnetic core used for the treatment of olive oil mill effluents from two-phase production process.
作者信息
Ochando-Pulido Javier Miguel, Hodaifa Gassan, Víctor-Ortega María Dolores, Martínez-Ferez Antonio
机构信息
Chemical Engineering Department, University of Granada, 18071 Granada, Spain.
Molecular Biology and Biochemical Engineering Department, University Pablo de Olavide, 14013 Seville, Spain.
出版信息
ScientificWorldJournal. 2013 Dec 31;2013:196470. doi: 10.1155/2013/196470. eCollection 2013.
Photocatalytic degradation of olive oil mill wastewater from two-phase continuous centrifugation process was studied. A novel photocatalyst with ferromagnetic properties was characterized and investigated. The degradation capacity of the photocatalytic process of olive oil washing wastewater (OMW) and mixture of olives and olive oil (1 v/v) washing wastewaters (MOMW) was demonstrated. At lab-scale, the %COD removal and residence time (τ) for MOMW and OMW were 58.4% (τ = 2 h) and 21.4% (τ = 3 h), respectively. On the other hand, at pilot scale, 23.4% COD(removal), 19.2% total phenols(removal), and 28.1% total suspended solids(removal) were registered at the end of the UV/TiO2 process for OMW, whereas 58.3% COD(removal), 27.5% total phenols(removal), and 25.0% total suspended solids(removal) for MOMW. Also, before the UV/TiO2 reaction, a pH-T flocculation operation as pretreatment was realized. The overall efficiency of the treatment process for MOMW was up to 91% of COD(removal), in contrast with 33.2% of COD(removal) for OMW.
研究了两相连续离心过程中橄榄油厂废水的光催化降解。对一种具有铁磁性能的新型光催化剂进行了表征和研究。证明了光催化过程对橄榄油洗涤废水（OMW）以及橄榄与橄榄油混合物（1 v/v）洗涤废水（MOMW）的降解能力。在实验室规模下，MOMW和OMW的化学需氧量（COD）去除率和停留时间（τ）分别为58.4%（τ = 2 h）和21.4%（τ = 3 h）。另一方面，在中试规模下，OMW在紫外光/二氧化钛（UV/TiO₂）处理过程结束时，化学需氧量去除率为23.4%，总酚去除率为19.2%，总悬浮固体去除率为28.1%；而MOMW的相应去除率分别为58.3%、27.5%和25.0%。此外，在UV/TiO₂反应之前，进行了pH-T絮凝操作作为预处理。MOMW处理过程的总体效率高达化学需氧量去除率的91%，相比之下，OMW的化学需氧量去除率为33.2%。
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