000			02416nam a22002897a 4500
003			OSt
005			20241017093750.0
008			241017b |||||||| |||| 00| 0 eng d
040			_aTUPM _bEnglish _cTUPM _dTUPM _erda
050			_aBTH RB 37 _bD45 2019
100			_aDe Leon, Shaeena G. _eauthor
245			_aPolyaniline cellulose for the reduction of hexavalent chromium (Cr6+) to trivalent chromium (Cr3+) / _cShaeena G. De Leon, Michelle D. Llapitan, and Vincent Louise S. Rentoria .--
260			_aManila: _bTechnological University of the Philippines, _c2019.
300			_a58pages: _c29cm. _e+1 CD ROM (3/4in.)
336			_2rdacontent
337			_2rdamedia
338			_2rdacarrier
500			_aThesis (undergraduate)
502			_aCollege of Science.-- _bBachelor of Science major in Laboratory Technology: _cTechnological University of the Philippines, _d2019
504			_aIncludes bibliography.
520			_aThe adsorption of hexavalent chromium (Cr6+) using synthesized PANI/cotton composite was investigated in this study. Two different oxidizing agents (potassium persulfate and ferric nitrate) and dopants (acetic acid and aspartic acid) were used for the polymerization of aniline monomers. PANI/cotton composite was characterized by Scanning Electron Microscopy and Fourier Transformed Infrared and thermogravimetric analysis. The results showed that the PANI/cotton composite reduces and converts hexavalent chromium (Cr6+) to trivalent chromium (Cr3+). The removal efficiency of PANI/cotton composite was examined using UV-Vis spectroscopy at different contact time. PANI/cotton that utilizes potassium persulfate as an oxidizing agent and acetic acid as dopant for polymerization of aniline efficiently demonstrated great removal capacity towards hexavalent chromium (Cr6+) because of its recyclability. PANI/cotton Fe3+ can be used for 2 cycles only while potassium persulfate can be used in 4-5 cycles and the reduction of hexavalent chromium was continuous.SEM analysis showed that PANI/cotton-K2S2O8 appears to be rougher and denser. Keywords: Polyaniline, cotton, adsorption, hexavalent chromium, potassium persulfate, ferric nitrate, acetic acid, and aspartic acid.
650			_aPolyaniline
650			_ahexavalent chromium
700			_aLlapitan, Michelle D. _eauthor
700			_aRentoria, Vincent Louise S. _eauthor
942			_2lcc _cBTH COS _n0
999			_c28987 _d28987