Original Article | 2009, Vol.31, No.6, pp. 635-639
Weight and volume reduction of organic sludges and enhanced recovery of biomass resources using sonophotocatalysis
Naohito Hayashi, Satoshi Koike, Ryosuke Yasutomi and Eiki Kasai
pp. 635 - 639
Abstract
The efficiency of sonophotocatalysis, a pretreatment process involving ultrasonic irradiation and photocatalysis, in decreasing the emission amount of sewage sludge and enhancing the recovery of valuable materials, was investigated experimentally. The results indicated a 50% reduction in the sewage sludge emission after sonophotocatalysis was carried out for 2 h. In addition, the recovery ratio of methane gas by anaerobic digestion and dissolved phosphorus were 1.7 and 2.5 times more than those of methane and phosphorus in the recovery process without pretreatment, respectively
