?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=TEKNIK+PELAPISAN+SILIKA-MAGNET+DALAM+PEMBUATAN+MATERIAL+BIOMASSA+ALGA+Tetraselmis+sp+SEBAGAI+ADSORBEN+ION+Cd(II)+DAN+Pb(II)&rft.creator=Yunia+Hartina%2C++1117011054&rft.subject=QD+Chemistry&rft.description=Pada+penelitian+ini%2C+biomassa+alga+Tetraselmis+sp+telah+dimodifikasi+dengan+silika-magnetit+menggunakan+metode+sol-gel%2C+dan+kemudian+diuji+sebagai+adsorben+ion+Cd(II)+dan+Pb(II)%2C+dengan+tujuan+untuk+membandingkan+kapasitas+adsorpsi+dari+adsorben+Tetraselmis+sp-silika+(TS)+dan+Tetraselmis+sp-silika-magnetit+(TSM).+Kedua+adsorben+dikarakterisasi+menggunakan+beberapa+teknik%2C+antara+lain+Fourier+transform+infrared+(FTIR)+Spectroscopy+untuk+mengidentifikasi+gugus+fungsi+yang+ada+dalam+contoh+dan+X-ray+diffraction+(XRD)+untuk+mengukur+fasa+kristalin.+Untuk+mengetahui+daya+adsorpsi+dari+adsorben%2C+rangkaian+percobaan+telah+dilakukan+pada+pH+berbeda+dan+konsentrasi+logam+berbeda+ditentukan+menggunakan+Spektrofotometer+Serapan+Atom+(SSA).+Hasil+menunjukkan+bahwa+untuk+ion+Cd(II)+dari+adsorben+TS+optimum+pada+pH+%3D+7+dengan+kapasitas+adsorpsi+70%2C25+mg%2Fg+dan+untuk+TSM+optimum+pada+pH+%3D+4%2C+dengan+kapasitas+adsorpsi+80%2C29+mg%2Fg%2C+dan+untuk+ion+Pb(II)+optimum+pada+pH+%3D+5+untuk+kedua+adsorben%2C+dengan+kapasitas+adsorpsi+yang+sama+109%2C05+mg%2Fg.+Hasil+yang+diperoleh+menunjukkan+bahwa+adsorben+mampu+menyerap+ion+logam+hingga+90%25.+Isoterm+adsorpsi+menunjukkan+bahwa+adsorpsi+mengikuti+isoterm+Langmuir%2C+dengan+R2+%3D+0%2C98-0%2C99.+Energi+adsorpsi+berada+di+kisaran+24-27+kJ+mol-1%2C+menunjukkan+bahwa+adsorpsi+berlangsung+melalui+interaksi+kimia+antara+ion+logam+dan+adsorben.%0D%0AKata+Kunci%3A+Adsorpsi%2C+silika%2C+magnetit%2C+Tetraselmis+sp%2C+logam+berat.%0D%0A%0D%0A%0D%0AABSTRACT+BAHASA+INGGRIS%0D%0A%0D%0ATHE+TECHNIQUE+OF+SILICA-MAGNET+COATING+FOR+PREPARATION+OF+ALGAE+BIOMASS+Tetraselmis+sp+as+ADSORBENT+FOR+Cd(II)+AND+Pb(II)+IONS%0D%0A%0D%0AIn+this+research%2C+biomass+algae+Tetraselmis+sp+was+modified+with+silica-magnetite+using+sol-gel+method%2C+and+tested+as+adsorbents+for+Cd(II)+and+Pb(II)+from+water%2C+with+the+main+purpose+to+compare+the+adsorption+capacity+of+the+adsorbent+Tetraselmis+sp-silica+(TS)+and+Tetraselmis+sp-silica-magnetite+(TSM).+Both+adsorbents+were+characterized+using+several+techniques.+The+Fourier+transform+infrared+(FTIR)+spectroscopy+was+applied+to+identify+the+functional+groups+present+in+the+samples+and+X-ray+diffraction+(XRD)+to+determine+the+crystalline+phases.+To+study+adsorption+performance+of+the+adsorbent%2C+a+series+of+experiments+was+conducted+at+different+pHs+and+concentrations+of+the+different+metals+were+determined+using+Atomic+Absorption+Spectrophotometer+(AAS).+The+results+revealed+that+for+Cd(II)+of+TS+adsorbent+the+optimum+pH+is+7+with+the+adsorption+capacity+of+70.25+mg%2Fg%2C+for+TSM+the+optimum+pH+is+4%2C+with+the+adsorption+capacity+of+80.29+mg%2Fg%2C+and+for+Pb(II)%2C+the+optimum+pH+is+5+for+both+adsorbents%2C+with+the+same+adsorption+capacity+of+109.05+mg%2Fg.+The+results+obtained+revealed+that+the+adsorbents+were+able+to+adsorb+the+metal+ions+up+to+90%25.+Adsorption+isotherms+showed+that+the+adsorption+followed+the+Langmuir+isotherm%2C+with+R2+%3D+0.98-0.99%2C+with+the+adsorption+energies+are+in+the+range+of+24-27+kJ+mol-1%2C+indicating+that+the+adsorption+took+place+through+the+chemical+interaction+between+the+metal+ions+and+adsorbents.%0D%0AKeywords%3A+Adsorption%2C+silica%2C+magnetite%2C+Tetraselmis+sp%2C+heavy+metal.&rft.publisher=Fakultas+Matematika+dan+Ilmu+Pengetahuan+Alam&rft.date=2015-11-30&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F15631%2F1%2F1.%2520COVER%2520LUAR.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F15631%2F2%2F2.%2520ABSTRACT%2520.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F15631%2F3%2F3.ABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F15631%2F4%2F4.%2520COVER%2520DALAM.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F15631%2F6%2F6%2520lembar%2520persetujuan.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F15631%2F5%2F5%2520Lembar%2520pengesahan.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F15631%2F7%2F7.%2520riwayat%2520hidup.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F15631%2F8%2F8.%2520MOTO.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F15631%2F9%2F9.%2520persembahan.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F15631%2F10%2F10.%2520sanwacana.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F15631%2F11%2F11.%2520DAFTAR%2520ISI.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F15631%2F12%2F12.DAFTAR%2520TABEL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F15631%2F13%2F13.%2520DAFTAR%2520GAMBAR.pdf&rft.form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