261 - - - - - Bjornsson, 2000) - - Mechichi Sayadi, 2005; Nielsen, 2006 100 - 0.5 - Angelidaki Ahring, 1994 - - - - 0.2 (Alkalinity) - - - - Total alkalinity) - 4.3 Björnsson , 2001) 2,000-5,000 - 4.3