?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PENGARUH+KONSENTRASI+ZAT+ANTI+KOROSI+OLIGOMER+4-VINIL+%0D%0APIRIDIN+TERHADAP+PERTUMBUHAN+IRON+OXYDIZING+BACTERIA+%0D%0A(IOB)&rft.creator=WINDI+RATNASARI+%2C+1517011015&rft.subject=540+Kimia+dan+ilmu+yang+berhubungan&rft.description=Korosi+atau+pengkaratan+adalah+peristiwa+kerusakan+atau+penurunan+kualitas+suatu+%0D%0Alogam+yang+disebabkan+oleh+reaksi+dengan+lingkungannya.+Korosi+dapat+dicegah+%0D%0Adengan+menggunakan+inhibitor+atau+zat+anti+korosi.+Penelitian+ini+bertujuan+untuk+%0D%0Amengetahui+pengaruh+konsentrasi+zat+anti+korosi+oligomer+4-vinil+piridin+terhadap+%0D%0Apertumbuhan+iron+oxydizing+bacteria+(IOB)%2C+yang+diduga+efektif+menghambat+%0D%0Apertumbuhan+mikroba+pengoksidasi+besi+(Thiobacillus+ferrooxidans).+Tahap+%0D%0Apenelitian+meliputi+pembuatan+kurva+pertumbuhan+dari+bakteri+Thiobacillus+%0D%0Aferrooxidans+dan+penentuan+nilai+pH+optimum+dari+pertumbuhan+bakteri+tersebut.+%0D%0AOligomer+4-vinil+piridin+yang+berperan+sebagai+inhibitor+korosi+dilakukan+sintesis+%0D%0Ahingga+diperoleh+hasil+sintesis+oligomer+4-vinil+piridin.+Selanjutnya+Thiobacillus+%0D%0Aferrooxidans+dan+hasil+sintesis+oligomer+4-vinil+piridin+dihitung+nilai+lethal+%0D%0Aconcentration+(LC50).+Berdasarkan+kurva+pertumbuhan+diperoleh+waktu+setengah+%0D%0Adari+fase+eksponensial+yaitu+pada+hari+ke-7+dan+nilai+pH+optimum+diperoleh+pada+%0D%0ApH+2%2C5.+Hasil+sintesis+oligomer+4-vinil+piridin+diperoleh+cairan+kental+berwarna+%0D%0Ajingga.+Nilai+LC50+pada+oligomer+4-vinil+piridin+diperoleh+pada+konsentrasi+0%2C14+%0D%0Appm.+Berdasarkan+hasil+penelitian+dapat+disimpulkan+bahwa+senyawa+oligomer+4-%0D%0Avinil+piridin+mampu+menghambat+pertumbuhan+bakteri+Thiobacillus+ferrooxidans.+%0D%0AKata+kunci+%3A+Oligomer+4-Vinil+Piridin%2C+Iron+Oxydizing+Bacteria%2C+Thiobacillus+%0D%0Aferrooxidans%2C+Lethal+Concentration+50+(LC50).+%0D%0A%0D%0ACorrosion+or+rusting+is+the+process+of+damage+or+deterioration+of+the+quality+of+a+%0D%0Ametal+caused+by+reaction+with+its+environment.+Corrosion+can+be+prevented+by+%0D%0Ausing+inhibitors+or+anti+corrosion+substances.+This+study+aims+to+determine+the+%0D%0Aeffect+of+the+concentration+of+anti-corrosion+resistant+substance+4-vinyl+pyridine+%0D%0Aoligomeric+against+the+growth+of+iron+oxydizing+bacteria+(IOB)%2C+which+is+%0D%0Asuspected+to+effectively+inhibit+microbial+growth+of+iron+oxidization+(Thiobacillus+%0D%0Aferrooxidans).+The+research+phase+includes+the+creation+of+growth+curves+from+%0D%0AThiobacillus+ferrooxidans+bacteria+and+the+optimum+pH+value+determination+of+the+%0D%0Abacteria+growth.+4-vinyl+pyridine+oligomeric+which+acts+as+a+corrosion+inhibitor+%0D%0Acarried+out+synthesis+until+obtained+by+the+synthesis+of+4-vinyl+pyridine+%0D%0Aoligomeric.+Furthermore%2C+Thiobacillus+ferrooxidans+and+the+synthesis+results+of+4-%0D%0Avinyl+pyridine+oligomeric+computed+value+of+lethal+concentration+(LC50).+Based+%0D%0Aon+the+growth+curve+obtained+half+time+from+the+exponential+phase+is+on+the+7th+%0D%0Aday+and+the+optimum+pH+value+is+obtained+at+pH+2.5.+Results+of+the+synthesis+of+%0D%0A4-vinyl+pyridine+oligomers+is+obtained+orange+coloured+viscous+fluid.+The+LC50%0D%0Avalue+in+4-vinyl+pyridine+oligomers+is+obtained+at+a+concentration+of+0.14+ppm.+%0D%0ABased+on+the+results+of+the+study+can+be+concluded+that+the+4-vinyl+pyridine+%0D%0Aoligomeric+compounds+are+able+to+inhibit+the+growth+of+Thiobacillus+ferrooxidans+%0D%0Abacteria.+%0D%0AKeywords%3A+4-Vinyl+Pyridine+Oligomeric%2C+Iron+Oxydizing+Bacteria%2C+Thiobacillus+%0D%0Aferrooxidans%2C+Lethal+Concentration+50+(LC50)&rft.publisher=Fakultas+Matematika+dan+Ilmu+Pengetahuan+Alam&rft.date=2019&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F57179%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F57179%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F57179%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++WINDI+RATNASARI+%2C+1517011015++(2019)+PENGARUH+KONSENTRASI+ZAT+ANTI+KOROSI+OLIGOMER+4-VINIL+PIRIDIN+TERHADAP+PERTUMBUHAN+IRON+OXYDIZING+BACTERIA+(IOB).++Fakultas+Matematika+dan+Ilmu+Pengetahuan+Alam%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F57179%2F