?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PENGARUH+WAKTU+TINGGAL+DAN+KOMPOSISI+BAHAN+BAKU+PADA+PROSES+FERMENTASI+TERHADAP+PRODUKTIVITAS%0D%0ABIOGAS+LIMBAH+CAIR+INDUSTRI+TAHU+%0D%0ADI+DESA+SINDANG+SARI%0D%0A&rft.creator=HOTMAN+HUTAGALUNG%2C+1015021037&rft.subject=Mesin+(General).+Mesin+Sipil+(General)&rft.description=ABSTRAK%0D%0A%0D%0AIndustri+tahu+menghasilkan+limbah+tahu+berupa+padatan+dan+cairan+yang+memiliki+kandungan+zat+organik+yang+tinggi+dan+dapat+mengakibatkan+penurunan+kualitas+air+jika+langsung+dibuang+ke+badan+air+sehingga+dilakukan+penelitian+dengan+mengolah+air+limbah+secara+anaerob+untuk+menghasilkan+zat+yang+lebih+bermanfaat+(biogas)+serta+mengurangi+konsentrasi+parameter+pencemar+dalam+air+limbah+cair+tahu.+Pengolahan+limbah+cair+ini+memanfaatkan+mikroorganisme+yang+terdapat+di+dalam+limbah+cair+tahu%2C+kotoran+sapi+dan+kotoran+unggas+bebek.+Penelitian+ini+dilakukan+selama+28+hari+dengan+menggunakan+5+variasi+rasio+perbandingan+volume+bahan+baku+yaitu++limbah+cair+tahu+1%3A0%2C+Limbah+cair+tahu+%3A+kotoran+bebek+1%3A0%2C25%2C+limbah+cair+tahu+%3A+kotoran+bebek+1%3A1%2C+limbah+cair+tahu+%3A+kotoran+sapi+1%3A0%2C25%2C+limbah+cair+tahu+%3A+kotoran+sapi+1%3A1+serta+dengan+4+variasi+waktu+tinggal+yaitu+7+hari%2C+14+hari%2C+21+hari+dan+28+hari.+Hasil+penelitian+menunjukkan+bahwa+volume+biogas+optimum+sebesar+10%2C9+L+tercapai+pada+kondisi+perbandingan+volume+bahan+baku+limbah+cair+tahu+%3A+kotoran+sapi+sebesar+1%3A0%2C25+dengan+waktu+tinggal+21+hari.++Untuk+uji+nyala+yang+dilakukan+menghasilkan+api+biru+dan+tidak+berasap+sehingga+dapat+dikatakan+biogas+yang+dihasilkan+mengandung+metana.+Hal+ini+juga+dibuktikan+dengan+melakukan+uji+komposisi+biogas+menggunakan+alat+uji+Chromatogram+dengan+komposisi+gas+pada+sampel+limbah+cair+tahu+dengan+kotoran+sapi+yaitu+28%2C84%25+N2%2C+65%2C67%25+CH4%2C+5%2C+5%25+CO2+dan+pada+sampel+limbah+cair+tahu+dengan+kotoran+bebek+yaitu+28%2C61%25+N2%2C+62%2C73%25+CH4%2C+8%2C65%25+CO2.%0D%0A%0D%0AKata+kunci+%3A+limbah+cair+industri+tahu%2C+biogas%2C+COD%2C+BOD%2C+kotoran+sapi%2C+%0D%0Akotoran+bebek.%0D%0A%0D%0A%0D%0AABSTRACT%0D%0A%0D%0AThe+tofu+industry+producing+tofu+waste+whether+solid+or+liquid+forms+that+have+high+organic+content+and+leads+to+a+water+quality+degradation+if+its+directly+pour+into+water+banks+so+this+research+is+done+by+treating+wastewater+anaerobic+to+produce+more+useful+substances+(biogas)+and+reduce+the+concentration+of+parameters+pollutants+in+liquid+tofu+wastewater.+This+liquid+waste+treatment+utilizes+microorganisms+contained+tofu+waste%2C+cow+dung+and+duck+muck.+This+research+was+conducted+for+28+days+by+using+5+variation+ratio+of+raw+material+volume+that+is+known+as+liquid+waste+1%3A+0%2C+liquid+waste+tofu%3A+duck+muck+1%3A+0%2C25%2C+liquid+waste+of+tofu%3A+1%3A+1+duck+muck%2C+liquid+waste+tofu%3A+cattle+1%3A+0.25%2C+liquid+waste+tofu%3A+1%3A+1+cow+dung+and+with+4+variations+of+holding+time+is+7+days%2C+14+days%2C+21+days+and+28+days.+The+results+showed+that+the+optimum+biogas+volume+of+10.9+L+was+achieved+in+the+condition+of+the+ratio+of+raw+material+volume+of+tofu+waste%3A+cow+dung+by+1%3A+0.25+with+a+residence+time+of+21+days.+For+flame+test+conducted+to+produce+blue+flame+and+there+was+no+smoke+so+it+can+be+said+that+the+biogas+produced+contains+methane.+It+is+also+proven+by+conducting+biogas+composition+test+using+Chromatogram+test+with+gas+composition+on+liquid+waste+sample+with+cow+dung+ie+28.84%25+N2%2C+65.67%25+CH4%2C+5%2C+5%25+CO2+and+on+sample+of+liquid+waste+know+with+duck+muck+that+is+28%2C61%25+N2%2C+62%2C73%25+CH4%2C+8%2C65%25+CO2.%0D%0A%0D%0AKeywords%3A+liquid+waste+of+tofu+industrial%2C+biogas%2C+COD%2C+BOD%2C+cow+dung%2C%0D%0A++++++duck+muck.%0D%0A&rft.publisher=FAKULTAS+TEKNIK&rft.date=2017-10-20&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F28977%2F1%2FABSTRAK%2520%2528ABSTRACT%2529.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F28977%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F28977%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++HOTMAN+HUTAGALUNG%2C+1015021037++(2017)+PENGARUH+WAKTU+TINGGAL+DAN+KOMPOSISI+BAHAN+BAKU+PADA+PROSES+FERMENTASI+TERHADAP+PRODUKTIVITAS+BIOGAS+LIMBAH+CAIR+INDUSTRI+TAHU+DI+DESA+SINDANG+SARI.++FAKULTAS+TEKNIK%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F28977%2F