?url_ver=Z39.88-2004&rft_id=1417011115&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=STUDI+PENAMBAHAN+ASAP+CAIR+TEMPURUNG+KELAPA+GRADE+2+SEBAGAI+INHIBITOR+KERAK+KALSIUM+KARBONAT+(CaCO3)+MENGGUNAKAN+METODE+UNSEEDED+EXPERIMENT&rft.creator=YUSUF+HADI+KURNIAWAN%2C+1417011115&rft.subject=QD+Chemistry&rft.description=Terbentuknya+kerak+pada+pipa+merupakan+masalah+yang+sering+dijumpai+pada+industri+diantaranya+industri+minyak%2C+gas%2C+dan+industri+yang+melibatkan+proses+desalinasi+dan+ketel.+Salah+satu+kerak+yang+banyak+dijumpai+yaitu+kalsium+karbonat+(CaCO3).+Untuk+mengatasi+masalah+tersebut%2C+pada+penelitian+ini+digunakan+asap+cair+tempurung+kelapa+grade+2+sebagai+inhibitor+kerak+CaCO3+yang+ramah+lingkungan+menggunakan+metode+tanpa+penambahan+bibit+kristal+(Unseeded+Experiment)+menggunakan+suhu+90+oC.+Larutan+pertumbuhan+CaCO3+yang+digunakan+yaitu+0%2C025%3B+0%2C038%3B+0%2C050%3B+dan+0%2C063+M+serta+variasi+inhibitor+sebesar+50%2C+150%2C+250%2C+dan+350+ppm.+Nilai+persen+efektivitas+tertinggi+terjadi+pada+konsentrasi+0%2C025+M+dengan+penambahan+inhibitor+sebesar+350+ppm+yaitu+sebesar+99%2C48%25.+Berdasarkan+hasil+Scanning+Electron+Microscopy+(SEM)+dan+X-Ray+Diffraction+(XRD)+menunjukkan+kerak+CaCO3+tanpa+inhibitor+terdiri+dari+kristal+fasa+kalsit+dan+sedikit+aragonit%2C+sedangkan+setelah+penambahan+inhibitor+terdiri+dari+kristal+fasa+aragonit%2C+vaterit%2C+dan+sedikit+kalsit.+Kalsit+merupakan+jenis+kristal+hardscale+sedangkan+aragonit+dan+vaterit+merupakan+jenis+kristal+softscale.+Analisis+kuantitatif+menggunakan+Particle+Size+Analyzer+(PSA)+menunjukan+bahwa+distribusi+ukuran+partikel+kerak+CaCO3+menjadi+lebih+kecil+dengan+adanya+penambahan+inhibitor+berdasarkan+nilai+rata-rata+(mean)+yaitu+dari+133%2C70+menjadi+8%2C26+%C2%B5m+dan+nilai+tengah+(median)+yaitu+dari+44%2C51+menjadi+6%2C40+%C2%B5m.%0D%0A%0D%0A%0D%0AKata+Kunci+%3A+Asap+cair%2C+CaCO3%2C+inhibitor%2C+kerak%0D%0A%0D%0ATHE+STUDY+OF+ADDITION+OF+COCONUT+SHELL+LIQUID+SMOKE+GRADE+2+AS+AN+INHIBITOR+OF+CALCIUM+CARBONATE+(CaCO3)+SCALE+USING+UNSEEDED+EXPERIMENT+METHOD%0D%0A%0D%0AScale+formation+on+the+pipes+is+a+problem+that+is+often+encountered+in+industries+such+as+oil%2C+gas%2C+and+industries+that+involve+desalination+and+kettle+process.+One+of+the+many+scales+found+is+calcium+carbonate+(CaCO3).+In+order+to+solve+the+problem%2C+in+this+research+coconut+shell+liquid+smoke+was+used+as+an+environmentally+friendly+inhibitor+of+CaCO3+using+unseeded+experiment+method+at+temperature+of+90+oC.+The+growth+solutions+of+CaCO3+used+were+0.025%2C+0.038%2C+0.050%2C+and+0.063+M+with+inhibitor+variations+of+50%2C+150%2C+250%2C+and+350+ppm.+The+highest+percentage+of+the+effectiveness+(99.48%25)+occurred+in+the+concentration+of+0.025+M+with+the+addition+of+350+ppm+inhibitor.++Based+on+the+results+of+Scanning+Electron+Microscopy+(SEM)+and+X-Ray+Diffraction+(XRD)+showed+that+the+scale+of+CaCO3+without+inhibitors+consisted+of+calcite+and+slightly+aragonite+crystals%2C+while+after+addition+of+inhibitors+contained+of+aragonite%2C+vaterite+and+slightly+calcite+phases.+Calcite+is+a+type+of+hard+scale+crystal+while+aragonite+and+vaterite+are+a+type+of+soft+scale+crystals.+Quantitative+analysis+using+Particle+Size+Analyzer+(PSA)+showed+that+the+particle+size+distribution+of+CaCO3+crystals+was+smaller+with+the+addition+of+inhibitor+based+on+mean+value+from+133.70+to+8.26+%CE%BCm+and+median+of+44.51+to+6.40+%CE%BCm.%0D%0A%0D%0AKeywords%3A+Liquid+smoke%2C+CaCO3%2C+inhibitor%2C+scale%0D%0A&rft.publisher=FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM&rft.date=2018-05-30&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F31760%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F31760%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F31760%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++YUSUF+HADI+KURNIAWAN%2C+1417011115++(2018)+STUDI+PENAMBAHAN+ASAP+CAIR+TEMPURUNG+KELAPA+GRADE+2+SEBAGAI+INHIBITOR+KERAK+KALSIUM+KARBONAT+(CaCO3)+MENGGUNAKAN+METODE+UNSEEDED+EXPERIMENT.++FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F31760%2F