?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=EKSTRAKSI+MAGNETIT+(Fe3O4)+DARI+PASIR+BESI+PESISIR+BARAT%0D%0ASEBAGAI+NANOPARTIKEL+DENGAN+METODE+KOPRESIPITASI%0D%0A&rft.creator=Yurita%2C++Renaria%09&rft.subject=500+ilmu+pengetahuan+alam+dan+matematika&rft.subject=540+Kimia+dan+ilmu+yang+berhubungan&rft.description=Pasir+besi+di+Provinsi+Lampung+tersebar+di+beberapa+wilayah+salah+satunya%0D%0AKabupaten+Pesisir+Barat.+Pasir+Pantai+Mandiri+Kabupaten+Pesisir+Barat+berwarna%0D%0Aabu-abu+kehitaman+yang+mengindikasikan+mengandung+mineral+besi%2C+seperti%0D%0Amagnetit.+Sampel+pasir+besi+dari+Pantai+Mandiri+dikarakterisasi+menggunakan+XRF%2C%0D%0Adari+hasil+karakterisasi+XRF+pasir+besi+Pantai+Mandiri+mengandung+unsur%0D%0Adiantaranya+Fe+52%2C854%25%3B+Si+20%2C553%25%3B+Ti+7%2C600%25%3B+Al+7%2C449%25+dan+Ca+6%2C873%25.%0D%0AMetode+kopresipitasi+merupakan+metode+yang+banyak+digunakan+untuk%0D%0Amenghasilkan+nanopartikel+magnetit%2C+karena+metode+ini+yang+paling+sederhana+dan%0D%0Amemberikan+hasil+yang+tinggi.+Pada+penelitian+ini+dilakukan+ekstraksi+magnetit+dari%0D%0Apasir+besi+Pantai+Mandiri+menggunakan+metode+kopresipitasi+dengan+pelarut+HCl%0D%0A37%25+serta+agen+pengendap+NH4OH+25%25+dan+dikarakterisasi+menggunakan+X-Ray%0D%0AFluorescence+(XRF)%2C+X-Ray+Diffraction+(XRD)+dan+Scanning+Electron+Microscope%0D%0A(SEM).+Hasil+ekstraksi+magnetit+dari+pasir+besi+Pantai+Mandiri+dengan+variasi+pH%0D%0Apada+proses+pengendapan+yaitu+pH+9%3B10%3B11+diperoleh+endapan+berwarna+hitam%0D%0Adengan+persen+rendemen+berturut-turut+16%2C42%25%3B+18%2C24%25%3B+dan+21%2C6%25.+Hasil%0D%0Aekstraksi+Fe3O4+dikarakterisasi+menggunakan+instrumen+XRF+diperoleh+kandungan%0D%0AFe3O4+pada+masing-masing+pH+yaitu+84%2C074%25+untuk+pH+9%3B+85%2C094+untuk+pH+10+dan%0D%0A91%2C747+untuk+pH+11.+Hasil+ekstraksi+pada+variasi+pH+11+dikarakterisasi%0D%0Amenggunakan+XRD.+Dari+hasil+analisa+XRD+diperoleh+fasa+magnetit+dengan+ukuran%0D%0A19%2C23+nm+berstruktur+kubik+dan+memiliki+konstanta+kisi+a+%3D+b+%3D+c+%3D+8%2C3200%E2%84%AB+dengan%0D%0A%CE%B1+%3D+%CE%B2+%3D+%CE%B3+%3D+90%C2%B0.+Hasil+karakterisasi+mengggunakan+Scanning+Electron+Microscope%0D%0A(SEM)+morfologi+Fe3O4+bentuknya+tidak+beraturan+dan+terjadi+aglomerasi.%0D%0AKata+kunci%3A+Pasir+Besi%2C+Magnetit%2C+Kopresipitasi%2C+Nanopartikel%0D%0AIron+sand+in+Lampung+Province+is+spread+in+several+areas%2C+one+of+which+is+Pesisir%0D%0ABarat+Regency.+The+sand+of+Mandiri+Beach+Pesisir+Barat+Regency+is+gray-black%0D%0Awhich+indicates+it+contains+iron+minerals%2C+such+as+magnetite.+Iron+sand+samples+from%0D%0APantai+Mandiri+were+characterized+using+XRF%2C+from+the+XRF+characterization%0D%0Aresults+the+iron+sand+of+Pantai+Mandiri+contained+elements+including+Fe+52.854%25%3B%0D%0ASi+20.553%25%3B+Ti+7%2C600%25%3B+Al+7.449%25+and+Ca+6.873%25.+The+coprecipitation+method+is%0D%0Aa+widely+used+method+for+producing+magnetite+nanoparticles%2C+because+it+is+the%0D%0Asimplest+and+gives+high+yields.+In+this+study%2C+magnetite+extraction+was+carried+out%0D%0Afrom+the+iron+sand+of+Pantai+Mandiri+using+the+coprecipitation+method+with+37%25%0D%0AHCl+solvent+and+25%25+NH4OH+precipitating+agent+and+characterized+using+X-Ray%0D%0AFluorescence+(XRF)%2C+X-Ray+Diffraction+(XRD)+and+Scanning+Electron+Microscope%0D%0A(SEM).+The+results+of+magnetite+extraction+from+the+iron+sand+of+Mandiri+Beach%0D%0Awith+pH+variations+in+the+deposition+process%2C+namely+pH+9%3B+10%3B+11+obtained+a%0D%0Aprecipitate+of+black+color+with+a+successive+percent+yield+of+16.42%25%3B+18%2C24%25%3B+and%0D%0A21.6%25.+Fe3O4+extraction+results+were+characterized+using+XRF+instruments+obtained%0D%0AFe3O4+content+at+each+pH+which+is+84.074%25+for+pH+9%3B+85.094+for+pH+10+and+91.747%0D%0Afor+pH+11.+Extraction+results+at+pH+variation+11+were+characterized+using+XRD.%0D%0AFrom+the+results+of+XRD+analysis%2C+a+magnetite+phase+with+a+size+of+19.23+nm+is%0D%0Aobtained+with+a+cubic+structure+and+has+a+lattice+constant+a+%3D+b+%3D+c+%3D+8.3200%C3%85+with%0D%0A%CE%B1+%3D+%CE%B2+%3D+%CE%B3+%3D+90+%C2%B0.+The+results+of+characterization+using+Scanning+Electron+Microscope%0D%0A(SEM)+morphology+Fe3O4+irregular+shape+and+agglomeration+occur.%0D%0AKeywords%3A+Iron+Sands%2C+Magnetite%2C+Coprecipitation%2C+Nanoparticles.&rft.publisher=MATEMATIKA+DAN+ILMU+PENGETAHUAN+&rft.date=2024-04-25&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F85865%2F1%2FAbstrak_Yurita%2520Renaria_2017011008%2520-%2520Yurita%2520Renaria.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F85865%2F2%2FSkripsi%2520Full_Yurita%2520Renaria_2017011008%2520-%2520Yurita%2520Renaria.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F85865%2F3%2FSkripsi%2520Tanpa%2520Pembahasan_Yurita%2520Renaria_2017011008%2520-%2520Yurita%2520Renaria.pdf&rft.identifier=++Yurita%2C+Renaria+++(2024)+EKSTRAKSI+MAGNETIT+(Fe3O4)+DARI+PASIR+BESI+PESISIR+BARAT+SEBAGAI+NANOPARTIKEL+DENGAN+METODE+KOPRESIPITASI.++MATEMATIK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