1,8-Dihydroxy anthraquinone is the intermediate
usually used in the dye and pharmaceutical industry,
and its direct discharge into water results in serious pollution.
In the present study, we aimed to remove 1,8-
dihydroxy anthraquinone and investigate its biosorption
mechanism of anthraquinone onto nonviable
Aspergillus oryzae
CGMCC5992 biomass. Biosorption data were
intuitively described by Langmuir isotherm and the
pseudo-second-order kinetic model. According to the
Langmuir model, it deduced that the maximum biosorption
capacity of 1,8-dihydroxy anthraquinone was
62.82 mg g
-1 at 30 °C and pH 3.0. Characterization of the
interaction between biosorbent and possible dye-biosorbent
was further confirmed by Fourier transform infrared spectroscopy
and scanning electron microscopy. Experimental
results suggested that
A. oryzae biomass as low-cost,
environmentally friendly and efficient biosorbent could be
successfully employed in the removal of 1,8-dihydroxy
anthraquinone from aqueous solution.
