?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PENCUCIAN+(LEACHING)+KADAR+KALIUM+(K)+JERAMI+PADI+(Oryza+%0D%0Asativa)+MENGGUNAKAN+LIMBAH+CAIR+INDUSTRI+TAHU+UNTUK+%0D%0AMENINGKATKAN+MUTU+BAHAN+BAKAR&rft.creator=USI+ZUBAIDAH%2C+1514071033&rft.subject=630+Pertanian+dan+teknologi+yang+berkaitan&rft.description=Limbah+dari+hasil+pengolahan+tanaman+padi+salah+satunya+yaitu+jerami+padi+%0D%0Amempunyai+banyak+kegunaan.+Misalnya+dapat+digunakan+sebagai+energi+alternatif%0D%0Aenergi+baru+dan+terbarukan.+Limbah+jerami+padi+mengandung+nilai+kalium+yang+%0D%0Acukup+tinggi+sehingga+dapat+menyebabkan+pengerakan+pada+saat+setelah+proses+%0D%0Apembakaran+maka+harus+dilakukan+pencucian+atau+leaching+dengan+%0D%0Amemanfaatkan+limbah+cair+industri+tahu.+Tujuan+dari+penelitian+ini+untuk+%0D%0Ameningkatkan+kualitas+jerami+padi+sebagai+bahan+bakar+melalui+proses+pencucian+%0D%0A(leaching)+menggunakan+air+limbah+industri+tahu.%0D%0APenelitian+ini+telah+dilaksanakan+pada+bulan+Maret+sampai+Mei+2019+di+%0D%0ALaboratorium+Rekayasa+Sumber+Daya+Air+dan+Lahan%2C+Jurusan+Teknik+Pertanian%2C+%0D%0AFakultas+Pertanian%2C+Universitas+Lampung.+Jerami+padi+diambil+dari+Lampung+%0D%0ATimur+dan+limbah+cair+industri+tahu+diambil+dari+Way+Halim%2C+Bandar+Lampung.+%0D%0ASebelum+dilakukan+penelitian%2C+jerami+padi+dijemur+terlebih+dahulu+sampai+%0D%0Amemiliki+kadar+air+15%25+dan+kemudian+dicacah+dengan+ukuran+1+sampai+2+cm.+%0D%0APerlakuan+pencucian+(leaching)+dilakukan+dengan+cara+direndam+dengan+waktu+%0D%0Aperendaman+selama+3%2C75%2C+7%2C5%2C+15%2C+30%2C+60%2C+120%2C+720+dan+1440+menit+dengan+%0D%0Apengambilan+sampel+menggunakan+metode+triplo.+Analisis+yang+dilakukan+adalah+%0D%0Aanalisis+pH+limbah+cair+tahu%2C+analisis+kadar+air+jerami+padi%2C+analisis+kadar+abu%2C+%0D%0Aanalisis+nilai+kalor+dan+analisis+nilai+kadar+kalium.%0D%0AHasil+dari+penelitian+ini+adalah+analisis+pH+limbah+cair+tahu+semakin+naik+setelah+%0D%0Amengalami+proses+pencucian%2C+jerami+padi+yang+dimanfaatkan+untuk+bahan+bakar+%0D%0Amerupakan+jerami+yang+sudah+kering+dan+mempunyai+kadar+air+13-15+%25+menurut+%0D%0Aperhitungan+kadar+air+basis+basah+dan+basis+kering.+Kadar+abu+jerami+padi+%0D%0Amengalami+penurunan+kadar+abu%2Cyaitu+pada+waktu+0+menit+kadar+abu+16%25+dan+%0D%0Asetelah+mengalami+proses+pencucian+menjadi+14-15%25.+Nilai+kalor+limbah+jerami+%0D%0Apadi+mengalami+peningkatan+dari+13%2C6+MJ+menjadi+15%2C77+MJ.+Dan+nilai+kadar+%0D%0Akalium+(K)+pada+limbah+jerami+padi+yang+sangat+tinggi+yaitu+sebesar+32%25+setelah+%0D%0Amengalami+proses+pencucian+menggunakan+limbah+cair+industri+tahu+menurun+%0D%0Asangat+signifikan+dalam+waktu+yang+cepat+yaitu+pada+waktu+3%2C75+menit+menurun+%0D%0Ahingga+2%25.+%0D%0AKata+kunci+%3A+Jerami+padi%2C+Leaching%2C+Limbah+cair+tahu%2C+Nilai+kadar+kalium+(K)%0D%0AOne+of+waste+from+rice+plants+processing+is+rice+straw+which+have+many+uses.+For+%0D%0Aexample%2C+if+can+be+used+as+an+alternative+renewable+energy.+Rice+straw+waste+%0D%0Acontains+high+potassium+value+that+can+cause+scaling+after+combustion+process.+%0D%0AThe+solution+is+rice+straw+wasted+could+be+washed+or+leached+by+utilizing+tofu+%0D%0Aindustrial+wastewater.+The+purpose+of+this+study+was+to+improve+the+rice+straw+%0D%0Aquality+as+fuel+through+a+leaching+process+using+industrial+tofu+wastewater.+This+%0D%0Aresearch+was+conducted+from+March+to+May+2019+at+the+Laboratory+of+Water+and+%0D%0ASoil+Engineering+Resources%2C+Agricultural+Engineering+Departement%2C+Faculty+of+%0D%0AAgriculture%2C+Lampung+University.+Rice+straw+was+taken+from+East+Lampung+and+%0D%0Atofu+industrial+wastewater+was+taken+from+Way+Halim%2C+Bandar+Lampung.+Before+%0D%0Adoing+the+research%2C+rice+straw+should+be+dried+first+until+15%25+moisture+content+and+%0D%0Arice+straw+chopped+until+size+was+1+until+2+cm.+The+process+of+leaching+were+done+%0D%0Aby+soaking+with+immersion+time+during+3%2C75%2C+7%2C5%2C+15%2C+30%2C+60%2C+120%2C+720+and+1440+%0D%0Aminutes+with+sampling+using+the+triplo+method.+The+analysis+carried+out+was+pH+%0D%0Aanalysis+tofu+industrial+wastewater%2C+analysis+of+water+content+rice+straw%2C+ash+%0D%0Acontent+analysis%2C+heating+value+analysis+and+analysis+of+potassium+levels.+The+%0D%0Aresult+of+this+studey+was+the+analysis+of+pH+of+tofu+wastewater+was+rised+after+the+%0D%0Awashing+process%2C+rice+straw+for+fuel+should+be+dried+and+only+had+13-15%25+water+%0D%0Acontent+according+to+the+calculation+of+the+moisture+content+od+the+wet+base+and+%0D%0Adry+base.+The+ash+content+at+0+minute+was+16%25+and+after+the+rice+straw+was+%0D%0Awashed%2C+the+ash+contents+decrease+to+14-15%25.+The+heating+value+of+rice+straw+%0D%0Awaste+has+increased+from+13.6+MJ%2FKg+to+15.77+MJ%2FKg.+The+calue+of+potassium+%0D%0A(K)+in+rice+straw+waste+was+very+high+at+32%25+after+undergoing+wash+process+using+%0D%0Aindustrial+tofu+wastewater.+And+it+decreased+significantly+in+short+time+that+only+in+%0D%0A3.75+minutes+decrease+until+2%25.%0D%0AKeywords%3A+Leaching%2C+Rice+straw%2C+Tofu+wastewater%2C+Valu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