?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=SINTESIS+DAN+KARAKTERISASI+SILIKA+SEKAM+PADI+DENGAN%0D%0A%0D%0AMENGGUNAKAN+METODE+PENGENDAPAN&rft.creator=An%E2%80%99nisa+Irnanda+Abidin%2C+1417041010&rft.subject=500+ilmu+pengetahuan+alam+dan+matematika&rft.subject=530+Fisika&rft.description=Penelitian+ini+dilakukan+untuk+mendapatkan+silika+dari+bahan+dasar+sekam+padi%0D%0Adengan+menggunakan+metode+pengendapan.+Proses+leaching+digunakan+pada%0D%0Apenelitian+ini+untuk+preparasi+bahan+dasar.+Sampel+yang+telah+di-leaching+tersebut%0D%0Akemudian+disintesis+dengan+metode+pengendapan.+Kemudian+sampel+dikalsinasi%0D%0Apada+suhu+700+oC+selama+5+jam+lalu+dikarakterisasi.+Analisis+XRF+menghasilkan%0D%0Asilika+tertinggi+sebesar+96%2C824+%25+pada+sampel+yang+disintesis+dengan+metode%0D%0Apengendapan.+Hasil+DTA+menunjukkan+adanya+puncak-puncak+endotermik+pada%0D%0Asuhu+73+%C2%B0C%2C+393+%C2%B0C%2C+470+%C2%B0C+dan+883+%C2%B0C+masing-masing+terjadinya+penguapan+air%2C%0D%0Apembakaran+karbon+dan+bahan-bahan+volatil+lainnya+dan+transformasi+fase%0D%0Atridimit.+Sedangkan+hasil+TGA+menunjukkan+total+penyusutan+massa+sebesar%0D%0A19%2C23+%25+dari+massa+awal.+Analisis+XRD+menghasilkan+puncak+tertinggi+pada+2%0D%0Amasing-masing+sebesar+21%2C77o%0D%0A%2C+23%2C26o%0D%0A%2C+dan+23%2C28o+menunjukkan+silika+berfase%0D%0Aamorf.+Hasil+analisis+FTIR+ketiga+sampel+memiliki+gugus+fungsi+-OH%2C+Si-OH%2C+Si-+O-Si%2C+Si-O%2C+dan+O-Si-O.+Gugus+fungsi+Si-O-Si+muncul+pada+ketiga+sampel%0D%0Amenunjukkan+karakteristik+silika.+Hasil+analisis+SEM+dari+ketiga+sampel%0D%0Amenunjukkan+struktur+permukaan+dan+bentuk+yang+menggumpal+dan+tidak%0D%0Aberaturan.+Sedangkan+hasil+EDX+diperoleh+unsur+yang+terbentuk+adalah+Si+dan+O%0D%0Apada+ketiga+sampel.+Kata+kunci%3A+Sekam+padi%2C+silika%2C+pengendapan%2C+kalsinasi%2C+XRF%2C+DTA-TGA%2C+XRD%2C%0D%0AFTIR%2C+dan+SEM-EDX.%0D%0AThis+research+was+conducted+to+get+silica+from+rice+husk+as+raw+material+by%0D%0Aprecipitation+method.+Leaching+process+were+used+in+this+study+to+raw+material%0D%0Apreparation.+Samples+were+leached+and+then+synthesized+by+precipitation+method.%0D%0AThis+samples+calcined+at+temperature+700+oC+for+5+hour+and+characterized.%0D%0AAnalysis+XRF+shown+the+highest+silica+of+96%2C824+%25+in+samples+synthsized+by%0D%0Aprecipitation+method.+The+results+of+DTA+showed+the+presence+of+endothermic%0D%0Apeaks+at+temperatures+73+%C2%B0C%2C+393+%C2%B0C%2C+470+%C2%B0C+and+883+%C2%B0C+for+evaporation+of+water%2C%0D%0Acarbon+combustion+and+other+volatile+materials+and+transformation+tridymite%0D%0Aphase%2C+respectively.+While+the+TGA+results+show+total+mass+shrinkage+up+to+19%2C23%0D%0A%25+from+initial+mass.+Analysis+XRD+for+three+samples+results+a+strong+broad+peak%0D%0Aat+2+%3D+21%2C77o%0D%0A%2C+23%2C26o%0D%0A%2C+dan+23%2C28o+assosiated+with+amorphous+silica%2C+respectively.%0D%0AAnalysis+FTIR+shown+that+three+samples+have+functional+groups+-OH%2C+Si-OH%2C+Si-+O-Si%2C+Si-O%2C+and+O-Si-O.+The+Si-O-Si+function+group+appeared+in+three+samples%0D%0Ashowing+the+characteristics+of+silica.+The+results+of+SEM+analysis+of+the+three%0D%0Asamples+showed+a+surface+structure+and+a+agglomerate+and+irregular+shape.+While%0D%0Athe+EDX+results+obtained+elements+formed+are+Si+and+O+on+all+three+samples.%0D%0A%0D%0AKeywords%3A+Rice+husk%2C+silica%2C+precipitation%2C+calcination%2C+XRF%2C+DTA-TGA%2C+XRD%2C%0D%0AFTIR%2C+and+SEM-EDX.&rft.publisher=FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM&rft.date=2019&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F57557%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F57557%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F57557%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++An%E2%80%99nisa+Irnanda+Abidin%2C+1417041010++(2019)+SINTESIS+DAN+KARAKTERISASI+SILIKA+SEKAM+PADI+DENGAN+MENGGUNAKAN+METODE+PENGENDAPAN.++FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F57557%2F