Fig. 3From: Enhanced short chain fatty acids production from waste activated sludge conditioning with typical agricultural residues: carbon source composition regulates community functionsEffect of AR-conditioning on soluble substrates concentration during different SRT operation stages. The figure showed the variation of soluble carbohydrate and soluble protein concentrations during operation stages of SRT 10 d, SRT 8 d, and SRT 5 d in group CS, RS, LES, ABS, and BLBack to article page