?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PENGGUNAAN+ASAP+CAIR+DARI+TEMPURUNG+KELAPA+SEBAGAI%0D%0AINHIBITOR+KERAK+KALSIUM+SULFAT+(CaSO4)+DENGAN+METODE%0D%0ASEEDED+EXPERIMENT&rft.creator=RENI+ANGGRAENI+%2C+1417011089&rft.subject=+&rft.subject=QD+Chemistry&rft.description=Pengendapan+kerak+pada+dinding-dinding+peralatan+proses+aliran+fluida%2C+terutama%0D%0Apada+permukaan+transfer+panas+dan+permukaan+alat-alat+evaporasi+menjadi%0D%0Amasalah+yang+serius+pada+sebagian+besar+proses+industri%2C+diantaranya+industri%0D%0Aminyak+dan+gas.+Salah+satu+kerak+yang+sering+dijumpai+adalah+kalsium+sulfat%0D%0A(CaSO4).+Oleh+karena+itu%2C+untuk+mengatasi+masalah+tersebut+pada+penelitian+ini%0D%0Adigunakan+asap+cair+tempurung+kelapa+sebagai+inhibitor+kerak+CaSO4+yang+ramah%0D%0Alingkungan+dengan+biaya+yang+relatif+terjangkau.+Penelitian+ini+dilakukan%0D%0Amenggunakan+metode+penambahan+bibit+kristal+(seeded+experiment)+pada+suhu+90%0D%0AoC+dengan+konsentrasi+larutan+pertumbuhan+0%2C050%3B+0%2C075%3B+0%2C100%3B+dan+0%2C125+M%0D%0Aserta+variasi+konsentrasi+inhibitor+50%2C+150%2C+250%2C+dan+350+ppm.+Nilai+persen%0D%0Aefektivitas+tertinggi+didapat+pada+konsentrasi+larutan+pertumbuhan+0%2C050+M+dan%0D%0Akonsentrasi+inhibitor+350+ppm+yaitu+sebesar+177%2C00+%25.+Berdasarkan+hasil+analisis%0D%0Akualitatif+dari+Scanning+Electron+Microscopy+(SEM)+dan+X-Ray+Diffraction%0D%0A(XRD)+menunjukkan+bahwa+kerak+CaSO4+tanpa+inhibitor+terdiri+dari+kristal+fasa%0D%0Agipsum+dan+basanit%2C+sedangkan+setelah+penambahan+inhibitor+terdiri+dari+kristal%0D%0Afasa+gipsum%2C+basanit%2C+dan+anhidrit%2C+yang+didominasi+fasa+basanit.+Gipsum%0D%0Atermasuk+jenis+kristal+hardscale+sedangkan+basanit+dan+anhidrit+termasuk+jenis%0D%0Akristal+softscale.+Hasil+analisis+kuantitatif+dengan+Particle+Size+Analyzer+(PSA)%0D%0Amenunjukkan+bahwa+distribusi+ukuran+partikel+kerak+CaSO4+menjadi+lebih+kecil%0D%0Asetelah+penambahan+inhibitor+dengan+nilai+rata-rata+(mean)+dari+16%2C84+menjadi%0D%0A0%2C1149+%CE%BCm+dan+nilai+tengah+(median)+dari+11%2C85+menjadi+0%2C3914+%CE%BCm.%0D%0AKata+Kunci+%3A+Asap+cair%2C+CaSO4%2C+inhibitor%2C+kerak%0D%0A%0D%0Aabstract%0D%0A%0D%0AThe+precipitation+of+the+scale+on+the+walls+of+fluid+flow+process+equipment%2C%0D%0Aespecially+on+the+surface+of+the+heat+transfer+and+the+evaporative+equipment%0D%0Abecomes+a+serious+problem+in+most+industrial+processes%2C+including+the+oil+and+gas%0D%0Aindustry.+One+of+the+most+commonly+encountered+scale+is+calcium+sulfate%0D%0A(CaSO4).+Therefore%2C+in+order+to+solve+the+problem+in+this+research%2C+coconut+shell%0D%0Aliquid+smoke+was+used+as+environmentally+friendly+inhibitor+of+CaSO4+scale+with%0D%0Aa+relatively+affordable+cost.+This+research+was+conducted+using+seeded+experiment%0D%0Amethod+at+temperature+90+oC+with+concentration+growth+solutions+of+0.050%2C+0.075%2C%0D%0A0.100%2C+and+0.125+M+with+inhibitor+concentration+variations+of+50%2C+150%2C+250%2C+and%0D%0A350+ppm.+The+highest+percentage+of+the+effectiveness+at+the+growth+solution%0D%0Aconcentration+of+0.050+M+and+inhibitor+concentration+of+350+ppm+is+177+%25.%0D%0ABased+on+the+results+of+qualitative+analysis+from+Scanning+Electron+Microscopy%0D%0A(SEM)+and+X-Ray+Diffraction+(XRD)+showed+that+the+scale+of+CaSO4+without%0D%0Ainhibitors+consisted+of+gypsum+and+basanite+phase+crystals%2C+while+after+addition+of%0D%0Ainhibitors+contained+of+gypsum%2C+basanite%2C+and+anhydrite+phase+crystals%2C+dominated%0D%0Abasanite+phase.+Gypsum+is+a+type+of+hard+scale+crystal+while+basanite+and%0D%0Aanhydrite+are+a+type+of+soft+scale+crystals.+Quantitative+analysis+results+with%0D%0AParticle+Size+Analyzer+(PSA)+showed+that+the+particle+size+distribution+of+CaSO4%0D%0Ascale+was+smaller+after+the+addition+of+inhibitor+with+mean+value+from+16.84+to%0D%0A0.1149+%CE%BCm+and+median+of+11.85+to+0.3914+%CE%BCm.%0D%0AKeywords+%3A+Liquid+smoke%2C+CaSO4%2C+inhibitor%2C+scale&rft.publisher=FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM+&rft.date=2018-08-16&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F33172%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F33172%2F18%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F33172%2F19%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++RENI+ANGGRAENI+%2C+1417011089++(2018)+PENGGUNAAN+ASAP+CAIR+DARI+TEMPURUNG+KELAPA+SEBAGAI+INHIBITOR+KERAK+KALSIUM+SULFAT+(CaSO4)+DENGAN+METODE+SEEDED+EXPERIMENT.++FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM+%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F33172%2F