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Valor: 00bd5ecbd8d1f36ab9883ea60fa52d5eff0e95275e4850e23ffcb8f912658ed0

Origen: {"body":{"ca":"<p>A vermifilter has been designed at a pilot-scale to evaluate the post-treatment of a digestate from the anaerobic co-digestion of cow manure, cheese whey, and biochar.</p><blockquote><a href=\"https://upcommons.upc.edu/handle/2117/379472\" rel=\"noopener noreferrer\" target=\"_blank\">Enllaç a UPCommons</a></blockquote><p>The design was carried out through a bibliographic review of the vermifilters used mainly for the treatment of wastewater and domestic water, taking into account the specific characteristics of the effluent to be treated. In a preliminary phase, three different feed rates were tested in order to determine the best-operating conditions for this design. In the main experimental phase, several physicochemical, agronomical, and&nbsp;microbiological parameters were monitored during the vermifiltration process. Finally, the quality of the digestate and vermicompost was analysed.</p><p>The results showed reductions of 80% in Chemical Oxygen Demand (COD) and more than 90% in ammoniums. Moreover, a Germination Index (GI) of 70-90% was obtained in the effluent and 160% in the vermicompost. The vermifilter has proven to be a promising low-cost technology for the post-treatment of a digestate, due to its high efficiency in the removal of organic pollutants, nutrient fixation, and reduction of phytotoxicity. However, further research is needed to optimize the process and improve pathogens reduction</p>"},"title":{"ca":"Assessment and design of a vermifilter for the post-treatment of digestate from low-tech digesters implemented in rural areas of Colombia"}}

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