EFICIENTIZAREA OBŢINERII SEDIMENTELOR FURAJERE B12 -VITAMINIZATE DIN APE REZIDUALE AGROINDUSTRIALE: 2. MODIFICĂRI ALE UTILAJULUI

Abstract

Prin modificări constructive ale dispozitivelor bioreactorului şi soluţii noi: separarea zonelor acetogenă şi meta­no­genă în interiorul bioreactorului, recircularea CO2 şi suplimentarea acestuia cu H2 exogen, adsorbţia vitaminei B12 din lichidul postfermentare cu diatomită s-a obţinut ridicarea conţinutului de vitamina B12 în sedimentele epurării fermentativ–metanogene (anaerobe) a borhotului postalcoolic până la calitatea de con­centrat furajer B12-vitaminizat, concomitent cu intensificarea producerii biometanului, ca elemente ale ridicării eficienţei ecologo-economice a epurării anaerobe a borhotului.MORE EFFICIENT PRODUCITON OF VITAMINIZED FORAGE SLUDGE CONTAINING B12 FROM AGRO-INDUSTRIAL WASTES: 2. EQUIPMENT MODIFICAITON The increase in vitamin B12 contents in the sludge was obtained resulted from the methanogenic (anaerobic) digestion of post-distillery vinasse, through the design modifications of bioreactor interiour, CO2 re-circulation and its interaction with additionally dosed exogenic hydrogen. Vitamin B12 was further adsorbed on diatomite surface from the post-digestion liquid, which made it possible to produce the cattle forage concentrate enriched with vitamin B12. At the same time, biomethane production was intensified, being the element of ecologically-economic efficiency of anaerobic treatment of vinasse (agro-industrial waste).

Keywords

• bioreactor, biomethane production, vitamin B12, forage concentrate vitaminized with B12, exogenic H2, methanogenesis, CO2 re-circulation.