Biodegradation of p-chlorophenol by a microalgae consortium.
An aquatic community was recovered from a waste discharge container fed with several aromatic pollutants. After 3 months of selective enrichment with p-chlorophenol and p-nitrophenol, two microalgae species, Chlorella vulgaris and Coenochloris pyrenoidosa, were recovered from the microbial consortium. As an axenic culture, this microalgae consortium was able to remove p-chlorophenol under different photo-regimes. Cultures grown under a 24h light regime were capable of biodegrading 50mg l(-1) of p-chlorophenol within 5 days. Addition of zeolite, an adsorbing material, did not improve the p-chlorophenol removal. However, when p-chlorophenol at 150mgl(-1) was fed to the culture supplemented with zeolite, the growth rate of the consortium improved, but the lag phase was longer (16 against 14 days in the absence of zeolite).
Lima
Sofia A C
SA
Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Dr. António Bernardino de Almeida, 4200-072, Porto, Portugal.
Raposo
M Filomena J
MF
Castro
Paula M L
PM
Morais
Rui M
RM
D000327:Adsorption; D001673:Biodegradation, Environmental; D002733:Chlorophenols / Q000378:metabolism*; D000460:Chlorophyta; D008027:Light; D011157:Population Dynamics; D014874:Water Pollutants, Chemical / Q000378:metabolism*; D018508:Water Purification / Q000379:methods*; D017641:Zeolites / Q000737:chemistry
D002733:Chlorophenols; D014874:Water Pollutants, Chemical; D017641:Zeolites; C029107:4-chlorophenol