?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=STUDI+PENAMBAHAN+LIMBAH+CAIR+TEMPE+SEBAGAI+INHIBITOR%0D%0AKALSIUM+SULFAT+(CaSO4%0D%0A%0D%0A)+MENGGUNAKAN+METODE+UNSEEDED%0D%0AEXPERIMENT&rft.creator=Dewi+Gustina+Sari%2C+1717011005&rft.subject=540+Kimia+dan+ilmu+yang+berhubungan&rft.description=Industri+minyak+dan+gas+sering+mengalami+permasalahan+pada+peralatan+pipa%0D%0Aaliran+fuida+seperti+terjadinya+pengerakan.+Salah+satu+kerak+yang+terbentuk+pada%0D%0Apipa-pipa+industri+adalah+kalsium+sulfat+(CaSO4).+Kerak+pada+pipa-pipa+industri%0D%0Aakan+memperkecil+diameter+dan+menghambat+aliran+fuida.+Penelitian+ini+dilakukan%0D%0Adengan+pengujian+inhibitor+limbah+cair+tempe+pada+kerak+kalsium+sulfat+(CaSO4)%0D%0Amenggunakan+unseeded+experiment.+pada+suhu+90%C2%B0C+dengan+variasi+konsentrasi%0D%0Alarutan+pertumbuhan+0%2C1%3B+0%2C15%3B+dan+0%2C2+M+serta+variasi+inhibitor+5%2C+15%2C+25%2C+35%2C+dan%0D%0A45%25.+Optimasi+waktu+simpan+inhibitor+dilakukan+pada+variasi+waktu+simpan+1%2C+3%2C%0D%0Adn+7+hari.+Limbah+cair+tempe+dengan+waktu+simpan+1+hari+digunakan+sebagai%0D%0Ainhibitor.+Efektifitas+tertinggi+terdapat+pada+konsentrasi+larutan+pertumbuhan+0%2C1%0D%0AM+dan+konsentrasi+inhibitor+45%25%2C+diperoleh+persen+efektifitas+sebesar+92%2C76%25.%0D%0ALimbah+cair+tempe+dianalisis+menggunakan+spectrophotometer+infrared+(IR)+dan%0D%0Ahigh+performance+liquid+chromatography+(HPLC)+dengan+diperoleh+hasil+bahwa%0D%0Alimbah+cair+tempe+mengandung+gugus+OH-hidroksi+dan+CO-karbonil+yang%0D%0Aterkandung+pada+asam+karboksilat+yaitu+asam+laktat.+Analisis+menggunakan%0D%0AScanning+Electron+Microscopy+(SEM)+dan+X-Ray+Diffraction+(XRD)%0D%0Amenunjukkan+bahwa+kerak+CaSO4+tanpa+penambahan+inhibitor+berukuran+lebih%0D%0Abesar+dan+terdiri+dari+kristal+fasa+gipsum+dan+basanit%2C+sedangkan+setelah%0D%0Apenambahan+inhibitor+menjadi+berukuran+lebih+kecil+dan+terdiri+dari+kristal+fasa%0D%0Agipsum%2C+basanit%2C+serta+sedikit+anhidrit.+Analisis+menggunakan+Particle+Size%0D%0AAnalyzer+(PSA)+menunjukkan+bahwa+distribusi+ukuran+partikel+kerak+CaSO4%0D%0Amenjadi+lebih+kecil+dengan+adanya+penambahan+inhibitor%0D%0A%0D%0AKata+kunci+%3A+Kerak%2C+CaSO4%2C+inhibitor%2C+limbah+cair+tempe%0D%0AThe+oil+and+gas+industry+often+experiences+problems+with+fluid+pipe+equipment%0D%0Asuch+as+the+occurrence+of+displacement.+One+of+the+scales+formed+on+industrial%0D%0Apipes+is+calcium+sulfate+(CaSO4).+Scale+on+industrial+pipes+will+reduce+the%0D%0Adiameter+and+impede+fluid+flow.+The+research+was+conducted+by+testing+the%0D%0Anhibitor+of+tempe%E2%80%99s+liqud+waste+on+calcium+sulfate+(CaSO4)+scale+using+the%0D%0Aunseeded+experiment+method+at+a+temperature+of+90%C2%B0C+with+a+concentration%0D%0Avariation+of+0.1+M%2C+0.15+M%2C+and+0.2+M+and+a+varation+of+inhibitor+5%2C+15%2C+25%2C+35%2C%0D%0Aand+45%25.+Optimization+of+the+inhibitor+shelf+time+was+cerried+out+on+variations+in%0D%0Astorage+time+of+1%2C+3%2C+and+7+days.+Tempe%E2%80%99s+liquid+waste+with+a+storage+time+of+1+day%0D%0Awasused+as+an+inhibitor.+The+highest+effectiveness+was+found+in+the+growth%0D%0Asolution+concentration+of+0.1+M+and+the+inhibitor+concentration+of+45%25%2C+the%0D%0Aperssentage+of+effectiveness+was+92.76%25.+tempe%E2%80%99s+liquid+waste+analyzed+using%0D%0Aspectrophotometers+infrared+(IR)+and+high+performance+liquid+chromatography%0D%0A%0D%0A(HPLC)+with+the+result+that+tempe%E2%80%99s+liquid+waste+contained+OH-hydroxy+dan+CO-%0D%0Acarbonyl+contained+in+carboxlyc+acid+namely+lactad+acid.+analylisis+using%0D%0A%0D%0AScanning+Electron+Microscopy+(SEM)+and+X-Ray+Diffraction+(XRD)+showed+that%0D%0Athe+CaSO4+scale+whitout+the+addition+of+inhibitors+was+larger+and+consisted+of%0D%0Agypsum+and+basanite+phase+crystal%2C+whereas+after+the+addition+of+inhibitors+it%0D%0Abecame+smaller+and+consisted+of+gypsum%2C+basanit%2C+and+alightly+anhydrite+phase%0D%0Acrystals.+Analysis+using+Particle+Size+Analyzer+(PSA)+showed+that+the+particle+size%0D%0Adistribution+of+the+CaSO4+scale+became+smaller+with+the+addition+of+inhibitors.%0D%0A%0D%0AKeywords+%3A+Scale%2C+CaSO4%2C+inhibitor%2C+tempe%3Bs+liquid+waste&rft.publisher=FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM&rft.date=2021&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F62089%2F1%2FABSTRAK%2520-%2520Dewi%2520Gustina.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F62089%2F2%2FSKRIPSI%2520FULL%2520-%2520Dewi%2520Gustina.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F62089%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN%2520-%2520Dewi%2520Gustina.pdf&rft.identifier=++Dewi+Gustina+Sari%2C+1717011005++(2021)+STUDI+PENAMBAHAN+LIMBAH+CAIR+TEMPE+SEBAGAI+INHIBITOR+KALSIUM+SULFAT+(CaSO4+)+MENGGUNAKAN+METODE+UNSEEDED+EXPERIMENT.++FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F62089%2F