?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=STUDI+PENAMBAHAN+CAMPURAN+ASAP+CAIR+CANGKANG+KELAPA%0D%0ASAWIT+DAN+EKSTRAK+DAUN+ALPUKAT+SEBAGAI+INHIBITOR%0D%0AKERAK+KALSIUM+SULFAT+(CaSO4)%0D%0A&rft.creator=AINUN+%2C+FARIHAH&rft.subject=500+ilmu+pengetahuan+alam+dan+matematika&rft.subject=540+Kimia+dan+ilmu+yang+berhubungan&rft.description=Pembentukan+kerak+kalsium+sulfat+dalam+pipa+menyebabkan+hambatan+aliran%0D%0Afluida+dan+menjadi+faktor+kerugian.+Oleh+karena+itu%2C+dalam+mengatasi+permasalahan%0D%0Atersebut+penelitian+ini+dilakukan+dengan+menguji+efektivitas+inhibitor+kerak+yang%0D%0Aberasal+dari+campuran+asap+cair+cangkang+kelapa+sawit+dan+ekstrak+daun+alpukat%0D%0Adengan+menggunakan+metode+penambahan+bibit+kristal+(seeded+experiment)+pada%0D%0Akonsentrasi+larutan+pertumbuhan+CaSO4+yang+digunakan+yaitu+0%2C025%3B+0%2C038%3B+0%2C050%3B%0D%0Adan+0%2C063+M+serta+variasi+konsentrasi+inhibitor+5%3A1%3B+5%3A3%3B+5%3A5%3B+dan+5%3A7.+%0D%0AEfektivitas+tertinggi+terjadi+pada+konsentrasi+larutan+pertumbuhan+kristal%0D%0ACaSO4+0%2C025+M+dan+konsentrasi+inhibitor+yang+ditambahkan+5%3A7+dengan+presentase%0D%0Aefektivitas+sebesar+83%2C19%25.+Berdasarkan+analisis+menggunakan+Scanning+Electron%0D%0AMicroscopy+(SEM)+dan+X-Ray+Diffraction+(XRD)+menunjukkan+bahwa+kristal%0D%0ACaSO4+tanpa+penambahan+inhibitor+berukuran+besar%2C+tidak+berlapis%2C+padat%2C%0D%0Atajam%2Cyang+terdiri+dari+fasa+gipsum+dan+basanit%2C+sedangkan+dengan+penambahan%0D%0Ainhibitor+kristal+CaSO4+memiliki+fasa+baru+berukuran+kecil%2C+pendek%2C+dan+berserabut%0D%0Ayaitu+fasa+anhidrit.+Analisis+menggunakan+Particle+Size+Analyzer+(PSA)%0D%0Amenunjukkan+terjadi+penurunan+ukuran+partikel+kerak+CaSO4+berdasarkan+nilai+ratarata%0D%0A(mean)%0D%0Adan%0D%0Anilai%0D%0Atengah%0D%0A(median)%0D%0Asetelah%0D%0Aadanya%0D%0Apenambahan%0D%0Ainhibitor.%0D%0A%0D%0A%0D%0ADengan%0D%0A%0D%0Ademikian%2C+dapat+disimpulkan+bahwa+inhibitor+campuran+asap+cair%0D%0Acangkang+kelapa+sawit+dan+ekstrak+daun+alpukat+dapat+digunakan+sebagai%0D%0Apenghambat+pertumbuhan+kerak+CaSO4.%0D%0A%0D%0A%0D%0A%0D%0AKata+kunci%3A+Asap+cair+cangkang+kelapa+sawit%2C+ekstrak+daun+alpukat%2C+inhibitor%2C%0D%0ACaSO4%2C+kerak%0D%0A%0D%0A%0D%0AFormation+of+calcium+sulfate+(CaSO4)+scale+in+pipes+causes+fluid+flow+resistance%0D%0Aand+leads+to+losses.+Therefore%2C+to+address+this+issue%2C+this+study+was+conducted+to%0D%0Aevaluate+the+effectiveness+of+a+scale+inhibitor+derived+from+a+mixture+of+palm+shell%0D%0Aliquid+smoke+and+avocado+leaf+extract+using+the+seeded+experiment+method.+The%0D%0Acalcium+sulfate+growth+solution+concentrations+used+were+0.025%3B+0.038%3B+0.050%3B+and%0D%0A0.063+M%2C+with+inhibitor+concentration+variations+of+5%3A1%3B+5%3A3%3B+5%3A5%3B+and+5%3A7.+The%0D%0Ahighest+effectiveness+was+observed+at+a+crystal+growth+solution+concentration+of%0D%0A0.025+M+and+an+inhibitor+concentration+of+5%3A7%2C+achieving+an+effectiveness%0D%0Apercentage+of+83.19%25.+Analysis+using+Scanning+Electron+Microscopy+(SEM)+and%0D%0AX-Ray+Diffraction+(XRD)+indicated+that+CaSO4+crystals+without+the+inhibitor+were%0D%0Alarge%2C+non-layered%2C+dense%2C+and+sharp%2C+consisting+of+gypsum+and+bassanite+phases.+In%0D%0Acontrast%2C+the+CaSO4+crystals+with+the+inhibitor+formed+a+new+phase+that+was+small%2C%0D%0Ashort%2C+fibrous%2C+and+non-layered%2C+identified+as+the+anhydrite+phase.+Furthermore%2C%0D%0AParticle+Size+Analyzer+(PSA)+analysis+revealed+a+reduction+in+CaSO4+scale+particle%0D%0Asize+based+on+both+the+mean+and+median+values+after+inhibitor+addition.+Thus%2C+it+can%0D%0Abe+concluded+that+the+inhibitor+derived+from+a+mixture+of+palm+shell+liquid+smoke%0D%0Aand+avocado+leaf+extract+can+effectively+inhibit+CaSO4+scale+formation.%0D%0A%0D%0A%0D%0AKeywords%3A+Palm+shell+liquid+smoke%2C+avocado+leaf+extract%2C+inhibitor%2C+CaSO%E2%82%84%2C+scale%0D%0Aformation%0D%0A&rft.publisher=FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM&rft.date=2025-06-19&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F89799%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F89799%2F2%2FSKRIPSI%2520FULL%2520TANPA%2520LAMPIRAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F89799%2F3%2FSKRIPSI%2520FULL%2520TANPA%2520PEMBAHASAN.pdf&rft.identifier=++AINUN+%2C+FARIHAH++(2025)+STUDI+PENAMBAHAN+CAMPURAN+ASAP+CAIR+CANGKANG+KELAPA+SAWIT+DAN+EKSTRAK+DAUN+ALPUKAT+SEBAGAI+INHIBITOR+KERAK+KALSIUM+SULFAT+(CaSO4).++FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F89799%2F