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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472
EISSN: 1735-2630
Vol. 12, No. 10, 2015, pp. 3351-3362
Bioline Code: st15314
Full paper language: English
Document type: Research Article
Document available free of charge

International Journal of Environment Science and Technology, Vol. 12, No. 10, 2015, pp. 3351-3362

 en Biosorption characteristics of 1,8-dihydroxy anthraquinone onto Aspergillus oryzae check for this species in other resources CGMCC5992 biomass
Zhang, Z.; Shi, D.; Ding, H.; Zheng, H. & Chen, H.

Abstract

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 check for this species in other resources 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.

Keywords
Aspergillus oryzae CGMCC5992; 1,8- Dihydroxy anthraquinone; Biosorption; Kinetics; Isotherms

 
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