?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PENGARUH+PENAMBAHAN+UREA+TERHADAP+PRODUKSI+BIOGAS+DARI+CAMPURAN+KOTORAN+SAPI+DAN+JERAMI+PADI&rft.creator=BADAI+PUTRA+SUGARA%2C+1214071016&rft.subject=Pertanian+(+Umum+)&rft.description=ABSTRACT%0D%0A%0D%0ABiogas+is+renewable+energy+formed+throught+the+process+of+fermentation+of+organic+waste+materials%2C+such+as+manure%2C+organic+waste%2C+and+other+materials+by+methanogenic+bacteria+in+anaerobic+condition.++One+of+the+materials+that+can+be+used+to+produce+biogas+is+rice+straw.+Rice+straw+has+a+C+%2F+N+value+of+67+while+the+optimal+C+%2F+N+ratio+for+biogas+is+24-30+.++If+the+C%2FN+ratio+is+to+high+will+result+in+lower+microbial+performance+resulting+in+lower+biogas+production.++To+decrease+the+C%2FN+ratio+can+be+done+by+increasing+the+nitrogen+content+in+the+substrate.++This+can+be+done+by+adding+urea+fertilizer+as+a+source+of+nitrogen+because++the+nitrogen+content+in+urea+is+46%25.%0D%0AThis+research+was+conducted+in+November+2016+until+January+2017+at+Department+of+Agricultural+Engineering%2C+Faculty+of+Agricultural%2C+University+of+Lampung.++Materials+used+are+cow+dung+and+rice+straw+with+a+ratio+of+3%3A1+based+on+total+solids+(TS).++The+digester+used+is+a+semi-continue+type+with+working+volume+of+30+liters.++This+research+used+a+complete+randomized+design+using+4+treatments+and+3+replications.++The+treatment+of+urea+addition+is+zero+(P1)%2C+0%2C247+g%2Fliter+(P2)%2C+0%2C645+g%2Fliter+(P3)%2C+and+1%2C304+g%2Fliter+(P4).%0D%0AThe+result+showed+that+addition+urea+had+an+effect+on+final+VS%2C+biogas+production%2C+biogas+yields%2C+methane+yields+and+time+(day)+at+which+the+biogas+fermentation+can+be+combusted.++The+fastest+average+time+for+biogas+can+burnt+was+15%2C33+days+after+the+digester+is+operated+occurs+in+the+addition+of+urea+0%2C247+g%2Fliter+(P2).++The+highest+biogas+yields+occurred+in+the+addition+of+urea+of+0%2C247+g%2Fliter+(P2)+that+is+886%2C5+liter%2Fkg+VS+removal.++The+highest+content+of+methane+was+found+in+the+addition+of+urea+of+0%2C247+g%2Fliter+(P2)+that+is+50%2C121%25.++The+highest+methane+yields+occurred+in+the+addition+of+urea+of+0%2C247+g%2Fliter+(P2)+that+is+443%2C89+liter%2Fkg+VS+removal.++The+result+of+this+reseach+showed+that+the+best+treatment+was+the+addition+of+urea+of+0%2C247+g%2Fliter+(P2).%0D%0A%0D%0AKeywords+%3A+Biogas%2C+Cow+Dung%2C+Rice+Straw%2C+Urea%0D%0A%0D%0AABSTRAK%0D%0A%0D%0ABiogas+adalah+energi+terbarukan+yang+terbentuk+melalui+proses+fermentasi+bahan-bahan+limbah+organik%2C+seperti+kotoran+ternak%2C+sampah+organik%2C+serta+bahan-bahan+lainnya%2C+oleh+bakteri+metanogenik+dalam+kondisi+anaerob.++Salah+satu+bahan+yang+dapat+digunakan+untuk+membuat+biogas+adalah+jerami+padi.++Jerami+padi+memiliki+nilai+C%2FN+sebesar+67+sedangkan+nilai+C%2FN+rasio+yang+optimal+untuk+biogas+adalah+24-30.++Nilai+C%2FN+yang+terlalu+tinggi+akan+mengakibatkan+kinerja+mikroba+menjadi+lebih+rendah+sehingga+mengakibatkan+produksi+biogas+juga+menjadi+rendah.++Untuk+menurunkan+nilai+C%2FN+rasio+dapat+dilakukan+dengan+cara+meningkatkan+kandungan+nitrogen+dalam+substrat+tersebut.++Hal+ini+dapat+dilakukan+dengan+menambahkan+pupuk+urea+sebagai+sumber+nitrogen+karena+kandungan+nitrogen+dalam+pupuk+urea+mencapai+46%25.%0D%0APenelitian+ini+dilakukan+pada+bulan+November+2016++sampai+Januari+2017+di+Jurusan+Teknik+Pertanian+Universitas+Lampung.++Bahan+yang+digunakan+adalah+kotoran+sapi+dan+jerami+dengan+perbandingan+3%3A1+berdasarkan+total+padatan+(TS).++Digester+yang+digunakan+adalah+digester+tipe+semi+kontinyu+dengan+volume+kerja+30+liter.++Penelitian+ini+menggunakan++rancangan+acak+lengkap+menggunakan+4+perlakuan+dan+3+ulangan.++Perlakuan+penambahan+urea+yang+digunakan+yaitu++P1+%3A+Tanpa+urea%2C+P2+%3A+0%2C247+g%2Fliter%2C+P3+%3A+0%2C645+g%2Fliter%2C+P4+%3A+1%2C304+g%2Fliter.%0D%0AHasil+penelitian+menunjukkan+bahwa+pemberian+urea+berpengaruh+terhadap+VS+akhir%2C+produksi+biogas%2C+produktivitas+biogas%2C+produktivitas+metana+dan+lama+waktu+fermentasi+biogas+bisa+dibakar.++Waktu+rata-rata+tercepat+biogas+untuk+dapat+terbakar+yaitu+15%2C33+hari+setelah+digester+dioperasikan+terjadi+pada+perlakuan+penambahan+urea+0%2C247+g%2Fliter+(P2).++Produktivitas+biogas+tertinggi+terdapat+pada+perlakuan+penambahan+urea+sebesar+0%2C247+g%2Fliter+(P2)+yaitu+886%2C5+liter%2Fkg+VS+terdegradasi.++Kandungan+metana+terbesar+tedapat+pada+perlakuan+penambahan+urea+sebesar+0%2C247+g%2Fliter+(P2)+yaitu+50%2C121%25.++Produktivitas+metana+terbesar+terdapat+pada+perlakuan+penambahan+urea+sebesar+0%2C247+g%2Fliter+(P2)+yaitu+443%2C89+liter%2Fkg+VS+terdegradasi.++Hasil+penelitian+ini+menunjukkan+bahwa+perlakuan+terbaik+adalah+penambahan+urea+sebesar+0%2C247+g%2Fliter+(P2).%0D%0A%0D%0AKata+kunci+%3A+Biogas%2C+Kotoran+Sapi%2C+Jerami+Padi%2C+Urea%0D%0A&rft.publisher=FAKULTAS+PERTANIAN&rft.date=2017-06-03&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F27530%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F27530%2F11%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F27530%2F12%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++BADAI+PUTRA+SUGARA%2C+1214071016++(2017)+PENGARUH+PENAMBAHAN+UREA+TERHADAP+PRODUKSI+BIOGAS+DARI+CAMPURAN+KOTORAN+SAPI+DAN+JERAMI+PADI.++FAKULTAS+PERTANIAN%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F27530%2F