000			02306nam a22003017a 4500
003			OSt
005			20250711141229.0
008			250711b |||||||| |||| 00| 0 eng d
040			_aTUPM _bEnglish _cTUPM _dTUPM _erda
050			_aBTH RB 37 _bA38 2025
100			_aAgullo, Nicole C. _eauthor
245			_aChitosan-functionalized activated biochar from pomelo peel waste for methyl orange dye removal/ _cNicole C. Agullo, Mitzi B. Laxamana, and Loiza Mae A. Panoy.--
260			_aManila: _bTechnological University of the Philippines, _c2025.
300			_axi, 93pages: _c29cm.
336			_2rdacontent
337			_2rdamedia
338			_2rdacarrier
500			_aBachelor's thesis
502			_aCollege of Science.-- _bBachelor of applied science in laboratory technology: _cTechnological University of the Philippines, _d2025.
504			_aIncludes bibliographic references and index.
520			_aThis study aimed to develop chitosan-functionalized activated biochar (FPPAB) from pomelo peel waste for the removal of Methyl Orange (MO) dye from aqueous solutions. It sought to synthesize FPPAB through phosphoric acid activation, pyrolysis, and chitosan coating; evaluate its performance against unmodified and activated biochar; optimize key adsorption parameters; characterize the material; and identify the applicable adsorption kinetics and isotherm models. The biochar was characterized using FTIR, SEM, and EDX, confirming successful functionalization and surface modification. Batch adsorption experiments were conducted to assess the effects of contact time, initial concentration, pH, and temperature, with UV-Vis spectrophotometry used to measure dye removal. FPPAB achieved a maximum removal efficiency of 98.97% under optimal conditions: 0.1 g dosage, 25 minutes contact time, 90 ppm concentration, and pH 3 at 50°C. The process followed pseudo-second-order kinetics (R2 = 0.9999) and aligned with the Freundlich isotherm model (R2 = 0.8942). The findings highlight FPPAB as a promising, eco-friendly adsorbent for wastewater treatment.
650			_aOrange adsorption
650			_aChitosan coating
650			_aAdsorption efficiency
700			_aLaxamana, Mitzi B. _eauthor
700			_aPanoy, Loiza Mae A. _eauthor
942			_2lcc _cBTH COS _n0
999			_c30302 _d30302