@misc{eprints74226,
           month = {Juli},
           title = {MODIFIKASI BIOMASSA ALGA Sargassum sp. DENGAN SURFAKTAN
CETYLTRIMETHYLAMMONIUM CHLORIDE (CTAC) SEBAGAI
ADSORBEN KRISTAL VIOLET DAN ANION NITRAT DALAM LARUTAN},
          author = {RIZKY NORA SIMATUPANG  YOHANA },
         address = {UNIVERSITAS LAMPUNG},
       publisher = {FAKULTAS MATEMATIKA DAN ILMU PENGETAHUAN ALAM},
            year = {2023},
             url = {http://digilib.unila.ac.id/74226/},
        abstract = {
Pada penelitian ini telah dilakukan modifikasi biomassa alga Sargassum sp.
menggunakan surfaktan Cetyltrimethylammonium Chloride (CTAC). Adsorben
yang digunakan untuk mengadsorpsi kristal violet dan anion nitrat dalam larutan
adalah adsorben alga, alga-Na, dan alga-CTAC. Karakterisasi adsorben dilakukan
menggunakan FTIR untuk mengidentifikasi gugus fungsi dan SEM-EDX untuk
mengetahui morfologi permukaan dan komposisi unsur. Adsorpsi monokomponen
adsorben alga, alga-Na, dan alga-CTAC terhadap kristal violet berturut-turut
optimum pada pH 4, 6, dan 5 sedangkan terhadap anion nitrat 3, 5, dan 10. Waktu
kontak optimum adsorben alga, alga-Na, dan alga-CTAC terhadap kristal violet
berturut-turut 120, 30, dan 60 menit sedangkan semua adsorben terhadap anion
nitrat 15 menit dengan konsentrasi optimum masing-masing 300 ppm. Kinetika
adsorpsi kristal violet dan anion nitrat cenderung mengikuti kinetika pseudo orde
dua dan isoterm adsorpsinya cenderung mengikuti model isoterm Freundlich
kecuali kristal violet terhadap alga-CTAC yang cenderung mengikuti isoterm
Langmuir. Hasil uji adsorpsi pasangan larutan bikomponen semua adsorben
cenderung lebih baik dalam mengadsorpsi kristal violet. Mekanisme adsorpsi yang
dilakukan pada alga-CTAC terhadap kristal violet menunjukkan interaksi
pertukaran ion dan interaksi fisika, sedangkan mekanisme adsorpsi alga terhadap
anion nitrat menunjukkan interaksi fisika. Adsorpsi dengan menggunakan adsorben
alga-CTAC terhadap kristal violet dan alga terhadap anion nitrat efektif digunakan
hingga empat kali pengulangan dengan persen adsorpsi {\ensuremath{>}}60\%.
Kata kunci : adsorpsi, kristal violet, anion nitrat, CTAC, Sargassum sp.

 In this research, modification of Sargassum sp. algae biomass using
Cetyltrimethylammonium Chloride (CTAC) surfactant has been carried out. The
adsorbents used to adsorb crystal violet and nitrate anions in solution are algae,
algae-Na, and algae-CTAC. Characterization of the adsorbent was carried out using
FTIR to identify functional groups and SEM-EDX to determine surface
morphology and elemental composition. The adsorption of monocomponent
adsorbent algae, algae-Na, and algae-CTAC to crytsal violet was optimum at pH 4,
6, and 5 respectively while to nitrate anion 3, 5, and 10. Optimum contact time for
algae, algae-Na, and algae-CTAC adsorbents to crystal violet were 120, 30, and 60
minutes respectively, while all adsorbenst to nitrate anion were 15 minutes with
optimum concentrations of 300 ppm. The adsorption kinetics of crystal violet and
nitrate anion tend to follow pseudo second order kinetics and their adsorption
isotherms tned to follow the Freundlich isotherm model except for crystal violet to
algae-CTAC which tends to follow the Langmuir isotherm. The results of the
adsorption test of the bicomponent solution pair of all adsorbents tended to be better
at adsorbing crystal violet. The adsorption mechanism performed on the algae-
CTAC on crystal violet shows ion exchange interactions and physical interactions,
while the alge adsorption mechanism on nitrate anion shows a physical interaction.
Adsorption using the algae-CTAC adsorbent for crystal violet and algae on nitrate
anion were efeectively used up to four repetitions with an adsorption percentage of
{\ensuremath{>}}60\%.
Keywords : adsorption, crystal violet, nitrate anion, CTAC, Sargassum sp.}
}