Use of Alkali-activated Aluminosilicatematerialto Enhancebiogas Production from Acidic Whey

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RESEARCH ARTICLE

Use of Alkali-activated Aluminosilicatematerialto Enhancebiogas Production from Acidic Whey

K. Rugele1 , 2 , * Open Modal E. Skripsts1 L. Mezule1 P. Pitk3 D. Bajare4 T. Juhna1
Authors Info & Affiliations
The Open Biotechnology Journal • 26 Jun 2015 • RESEARCH ARTICLE • DOI: 10.2174/1874070701509010054

Abstract

The effect of the addition of novel alkali-activated material (AAM) granules to provide additional buffering capacity, pH stability and increased methane yields in batch scale anaerobic digestion was investigated.The experiments were carried out with 20%, 30% and 40% of acidic whey in 500 ml batch reactors by a single addition of AAM granules (diameter from 2 to 8 mm) at 37 ± 0.5x00B0;C during 30 days. Presence of the AAM in the batch reactors allowedto maintain optimal pH, thus increasingthe yield and rate of methane formation from acid whey.

Keywords: Acid whey, alkali-activated material, anaerobic digestion, biogas.