Francisco Javier Yuste-Córdoba, Ana Parralejo Alcobendas, Luis Royano Barroso, Jerónimo González Cortés, Belén Godoy-Cancho
{"title":"Advanced valorisation for cork wastewater","authors":"Francisco Javier Yuste-Córdoba, Ana Parralejo Alcobendas, Luis Royano Barroso, Jerónimo González Cortés, Belén Godoy-Cancho","doi":"10.1016/j.biteb.2024.101881","DOIUrl":null,"url":null,"abstract":"<div><p>The cork manufacturing process generates cork boiling wastewater, characterized by high COD and phenolic compounds content. The main aim of this study is the advanced valorization of these spills through a green and efficient process with two main stages. Firstly, most of the organic matter was removed by an optimal design of a precipitation with calcium. The resulting depuration rates were in the ranges 37–53 % for COD and 70–87 % for TPC. Secondly, the precipitates generated were subjected to a biodigestion process with production of methane (up to 234 L CH<sub>4</sub>·kg VS<sup>−1</sup>) and fertilizers. In conclusion, good recovery of interesting by-products and a good yield of depuration were achieved with the technology proposed, avoiding the use of toxic reagents and demonstrating the potential of concentrate precipitates from CBWs as substrates for biodigestion.</p></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bioresource Technology Reports","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2589014X24001221","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Environmental Science","Score":null,"Total":0}
引用次数: 0
Abstract
The cork manufacturing process generates cork boiling wastewater, characterized by high COD and phenolic compounds content. The main aim of this study is the advanced valorization of these spills through a green and efficient process with two main stages. Firstly, most of the organic matter was removed by an optimal design of a precipitation with calcium. The resulting depuration rates were in the ranges 37–53 % for COD and 70–87 % for TPC. Secondly, the precipitates generated were subjected to a biodigestion process with production of methane (up to 234 L CH4·kg VS−1) and fertilizers. In conclusion, good recovery of interesting by-products and a good yield of depuration were achieved with the technology proposed, avoiding the use of toxic reagents and demonstrating the potential of concentrate precipitates from CBWs as substrates for biodigestion.
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