Carbamazepine is an anti-epileptic pharmaceuticalcompound which is frequently detected in wastewater. However, this compound is hardly degraded naturally due to its persistency. Thus, carbamazepine presents in water stream and household water supply as well as wastewater treatment plant. This paper focuses on various species of fungi and bacteria used in carbamazepine biodegradation and the carbamazepine degrading-enzymes involved in the degradation pathways. Selected research papers on carbamazepine biodegradation using fungi and bacteria were reviewed. The efficiency and approaches in term of methodologies and technologies used were highlighted in this paper. Such study sheds light on gaps of study and future research direction on carbamazepine biodegradation.
The research conducted a study on decomposition and biodegradability enhancement of textile wastewater using a combination of electron beam irradiation and activated sludge process. The purposes of this research are to remove pollutant through decomposition and to enhance the biodegradability of textile wastewater. The wastewater is treated using electron beam irradiation as a pre-treatment before undergo an activated sludge process. As a result, for non-irradiated wastewater, the COD removal was achieved to be between 70% and 79% after activated sludge process. The improvement of COD removal efficiency increased to 94% after irradiation of treated effluent at the dose of 50 kGy. Meanwhile, the BOD(5) removal efficiencies of non-irradiated and irradiated textile wastewater were reported to be between 80 and 87%, and 82 and 99.2%, respectively. The maximum BOD(5) removal efficiency was achieved at day 1 (HRT 5 days) of the process of an irradiated textile wastewater which is 99.2%. The biodegradability ratio of non-irradiated wastewater was reported to be between 0.34 and 0.61, while the value of biodegradability ratio of an irradiated wastewater increased to be between 0.87 and 0.96. The biodegradability enhancement of textile wastewater is increased with increasing the doses. Therefore, an electron beam radiation holds a greatest application of removing pollutants and also on enhancing the biodegradability of textile wastewater.
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