the PSB biomass production and biological carot-
enoid synthesis from wastewater should be feasible, which might
be strongly influenced by light intensity. This study aimed to
demonstrate the feasibility of biomass, carotenoid and bacterio-
chlorophyll accumulation in PSB wastewater treatment. The
primary aim of this work was to reduce pollutants. The biomass
production was of secondary importance. In addition, the caroten-
oid and bacteriochlorophyll accumulations were also optimized,
and the mechanisms of light intensity on PSB growth, carotenoid
and bacteriochlorophyll synthesis were investigated.