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This study investigated the role of extracellular polymeric substances (EPSs) in enhanced performance of phosphorus (P) release from waste activated sludge (WAS) by adding rhamnolipid (RL). Results showed that compared to WAS without pretreatment, the released PO43−–P increased with RL addition from 0 to 0.2g/gTSS (total suspended solid), and increased by 208% under the optimal condition (0.1gRL/gTSS...
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