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Utilization of wastewater from edible oil industry, turning waste into valuable products: A review
Trends in Food Science & Technology ( IF 15.3 ) Pub Date : 2020-03-03 , DOI: 10.1016/j.tifs.2020.02.017
Talha Ahmad , Tarun Belwal , Li Li , Sudipta Ramola , Rana Muhammad Aadil , Abdullah , Yanxun Xu , Luo Zisheng

Background

Increased demand of edible oil throughout the world has resulted in establishment of many edible oil industries leading to generation of huge amount of wastewater. Wastewater is generated mostly during the processing operations and washing of equipments. This wastewater has high nutrient content, biological oxygen demand (BOD), chemical oxygen demand (COD), lipids (fats, oil and grease) and organic and inorganic contents, so if disposed untreated it can result in soil, water and air pollution.

Scope and approach

This review is aimed to describe different methods used by edible oil industries to treat wastewater and their efficiency for removal of pollution. Especially, focuses on different utilizations of wastewater as a resource from edible oil industry.

Key findings and conclusion

Physiochemical (i.e. coagulation/flocculation), biological (i.e aerobic and anaerobic) and electrochemical methods are used for treatment of edible oil industry wastewater. These methods can be used alone or in combination for effective treatment Alternatively, utilization of wastewater is the most recent approach which is not only reduce pollution but also lead to the recovery of useful industrial products, such as bioactive compounds, bioplastic, biofuel, biofertilizer, biopesticide, enzymes, single cell proteins and many more. Moreover, bioactive compounds (i.e. polyphenols) can be extracted and used in different food products which leads to generate potential future possibilities for food and agriculture industries.



中文翻译:

食用油工业废水的利用,将废物转化为有价值的产品:回顾

背景

全世界对食用油的需求增加导致许多食用油行业的建立,导致产生大量废水。废水主要在加工操作和设备清洗过程中产生。该废水的养分含量高,生物需氧量(BOD),化学需氧量(COD),脂质(脂肪,油脂和油脂)以及有机和无机物含量高,因此,如果不加以处理,将导致土壤,水和空气污染。

范围和方法

这篇综述旨在描述食用油行业用于处理废水的不同方法及其去除污染的效率。特别地,着重于将食用油工业中的废水作为资源的不同利用。

主要发现和结论

物理化学方法(即凝结/絮凝),生物方法(即好氧和厌氧)和电化学方法用于处理食用油工业废水。这些方法可以单独使用,也可以组合使用以进行有效处理。或者,废水的利用是最新的方法,不仅可以减少污染,还可以回收有用的工业产品,例如生物活性化合物,生物塑料,生物燃料,生物肥料,生物农药,酶,单细胞蛋白等。此外,可以提取生物活性化合物(即多酚)并将其用于不同的食品中,从而为食品和农业工业带来潜在的未来可能性。

更新日期:2020-03-03
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