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008			260702t20242024my a|||fr|||| 000 0 eng d
020			_aTHE0010648 (Local) _qHardback
040			_aUMPSA _beng _cUMPSA _erda
090			_aFTKKP .Y564 2024 r Bc.
100	1		_aTham, Yim Hin, _eauthor.
245	1	0	_aEffects of inoculum type and sizes in biofloc production / _cTham Yim Hin
264		1	_aKuantan, Pahang : _bUMPSA, _c2024
264		4	_c© 2024
300			_axiv,52 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		_aAs a major contributor to both rural development and the provision of animal protein, the fisheries industry is vital to Malaysia's economy. Nitrogenous waste, however, poses problems for aquaculture and harms fish productivity and water quality. Using microorganisms to turn garbage into biomass, biofloc proves to be a sustainable alternative, cutting down on the demand for artificial feeds and freshwater. Cost-cutting measures within the fish farming sector might also be achieved using this method. To produce biofloc, this study investigated the effects of various inoculum sizes (0.05, 0.08, 0.1, 0.15, and 0.2 %(w/v)) and types (Bacillus subtilis used by Laziz Patin, Bacillus subtilis IS02, and Lactobacillus sp.) on the removal of nitrogen and biomass concentration. The inoculum was acclimatized at room temperature for 3 days. After inoculation and aeration for 3 days, 8 ppm of ammonium nitrate was added, and the mixture was fermented for an additional 2 days. Analyses of cell dry weight, optical density, ammonia, and nitrite removal were conducted on the first, third and fifth days of experiments. Results indicated that Bacillus subtilis (Laziz Patin) at 0.08 %(w/v), Bacillus subtilis IS02 at 0.15 %(w/v), and Lactobacillus sp. at 0.08 %(w/v) exhibit most effective ammonia removal. For nitrate removal, Bacillus subtilis (Laziz Patin) at 0.08 %(w/v), Bacillus subtilis IS02 at 0.1 %(w/v), and Lactobacillus sp. at 0.05 %(w/v) were identified as peak performers. In conclusion, both Bacillus subtilis and Lactobacillus sp. excelled in nitrogen removal during biofloc production, different inoculum types had different optimal inoculum sizes for nitrogen removal effects. This study suggested that Lactobacillus sp. at 0.08 %(w/v) is the effective choice from both technical and economic perspectives in biofloc production. Reading of basic colorimetric kit is lacks accuracy, for improvement, using a spectrophotometer was recommended and carbon must be sufficient to prevent bacteria from dying. Keywords: Biofloc; Bacillus subtilis; Lactobacillus sp.; Nitrogen Removal; Biomass Concentration.
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/47152
942			_2lcc _cPSM
999			_c105103 _d105109