Conclusion
The operation of MBR using municipal landfill leachate with C/N
ratio of 6 and SRT of 90 days were optimum for the treatment of
organic and nitrogen removals as well as the biodegradation of
phenolic and PAEs. Batch experiments using MBR sludge revealed
highest first order biodegradation rate constant (k) of
0.059e0.092 h1. Under this condition, heterotrophic bacteria,
heterotrophic nitrifying and ammonia oxidizing bacteria (AOB) coexists
in MBR sludge resulting in improvement biodegradation of
target compounds through major (phenol hydroxylase, esterase
and phthalate dioxygenase) and co-enzyme (ammonia