Biodecolorization of Reactive Blue 19 Dye from Effluents by Sorption on Aspergillus brasiliensis Fungal Biomass
Water quality resources in the current context of excessive pollution, are in constant decline. This involves a much better control over the water pollution phenomenon. Thus, strategies are needed to maintain effluent control. This is equally important for the biocenoses of the aquatic environment,...
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| Format: | Article |
| Language: | English |
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CITDD Publishing House
2019-05-01
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| Series: | Scientific Annals of the Danube Delta Institute |
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| Online Access: | http://ddniscientificannals.ddni.ro/images//24_18.pdf |
| Summary: | Water quality resources in the current context of excessive pollution, are in constant decline. This involves a much better control over the water pollution phenomenon. Thus, strategies are needed to maintain effluent control. This is equally important for the biocenoses of the aquatic environment, so that optimal conditions can be created for organisms living in water and, last but not least, those who benefit from water resources. Dyes represent the main sources of water contamination responsible for the continuous pollution of the environment. The potential of the hyphal network characteristic of fungal morphology represent an alternate to the conventional treatment methods. The main advantages of biosorption are environmental friendly, cost effective, pollutants high selectivity and good removal efficiency. The research was conducted at laboratory scale using biosorbents derived from starter culture Aspergillus brasiliensis (ATCC 16404) of fungal biomass and their capacity to removed Reactive Blue 19 Dye (CAS no. 2580-78-1) was evaluated. The influence of process variables such as pH, temperature, exposure time and initial dye concentration had its purpose to highlight their effects in sorption process. The initial biosorbent system parameters were had values of pH = 3.0 and temperature value beginning from 20°C. The equilibrium data fitted well with Langmuir and Freundlich sorption isotherms and their corresponding sorption parameters such as KF and KL. Furthermore, the temperature and pH of these effluents is important, because have the ability to control the biosorption process and ultimately affect their efficiency. The high biosorption performance has been reached for Aspergillus brasiliensis ATCC 16404 biomass at high pH values in range of 6.0 – 7.0 and low temperature T=20°C. For Aspergillus brasiliensis ATCC 16404 biosorbent, maximum removal efficiency of 78.67% was obtained, already proven to be very effective in dye biosorption. Finally, the results revealed that this biomass can be considered an exceptionally versatile material and excellent biosorbent. |
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| ISSN: | 1842-614X 2247-9902 |