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020			_aTHE0010642 (Local) _qHardback
040			_aUMPSA _beng _cUMPSA _erda
090			_aFTKKP .N35 2024 r Bc.
100	0		_aSiti Najiah Binti Ahmad Subkey, _eauthor.
245	1	0	_aEffect of various redox conditions on anaerobic biodegradation of 1,2 – dichloroethane by sungai ular sediment _b _cSiti Najiah Binti Ahmad Subkey
264		1	_aKuantan, Pahang : _bUMPSA, _c2024
264		4	_c© 2024
300			_a40 pages : _billustrations ;
336			_2rdacontent _atext
337			_2rdamedia _aunmediated
338			_2rdacarrier _avolume
347			_2rda _atext file _bPDF
500			_aFaculty of Chemical and Process Engineering Technology
502			_aFinal Year Report (Bachelor of Chemical Engineering ) -- Universiti Malaysia Pahang Al-Sultan Abdullah - 2024
504			_aInclude bibliographical reference
520	3		_aChlorinated compounds are serious environmental contaminants due to their high toxicity, which is harmful to human health and the environment when present in groundwater and soil. 1,2- dichloroethane (1,2-DCA) was an example of a chlorinated compound that was usually used in industry. Anaerobic biodegradation is a cost-effective and efficient method for remediating chlorinated sediments because it converts toxic compounds into non-toxic byproducts via organohalide respiring bacteria (OHRB). On the other hand, redox conditions such as iron and nitrate reduction will increase the metabolic activity and growth of OHRB, resulting in faster biodegradation of 1,2-DCA while sulphate reducing bacteria may be unfavorable to OHRB bacteria because they compete for hydrogen. The aim of this study was to investigate the effect of different redox conditions on 1,2-DCA degradation by OHRB in Sungai Ular sediment. The degradation of 1,2-DCA were tested under different redox conditions such as nitrate reducing, iron reducing and sulfate reducing with three different concentrations of the respective compounds. The 1,2-DCA was added to a nominal concentration of 100 μM. The concentration of redox condition was varied to observe the biodegradation rate of 1,2-DCA. The results showed that the highest biodegradation rates for nitrate, sulphate, and iron reducing conditions were achieved at 2 mM (82.78%), 1 mM (81.52%), and 10 mM (91.65%), respectively. The results of this study demonstrate that OHRB in the Sungai Ular sediment can degrade 1,2-DCA under any redox condition but prefers a certain concentration. Keywords: Chlorinated compounds; Biodegradation; Organohalide Respiring Bacteria; Redox; 1,2-Dichloroethane
610	2	0	_aFaculty of Chemical and Process Engineering Technology _xDissertations
650		0	_aUniversities and colleges _xDissertations
650		0	_aTheses _xDissertations
856			_uhttps://umpir.ump.edu.my/id/eprint/47112
942			_2lcc _cPSM
999			_c105043 _d105049