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Pemanfaatan Sludge Limbah Biodigester untuk Meningkatkan Kecepatan Produksi Biogas dan Konsentrasi Gas Metan dalam Biogas

Authors: Heni Dwi Kurniasari;

Pemanfaatan Sludge Limbah Biodigester untuk Meningkatkan Kecepatan Produksi Biogas dan Konsentrasi Gas Metan dalam Biogas

Abstract

<p><em>Sludge</em> hasil samping pengolahan kotoran sapi menjadi biogas masih mengandung bahan pencemar seperti E. coli, oleh karena itu apabila sludge dibuang langsung ke lingkungan akan menyebabkan pencemaran air, tanah, dan udara. Selama ini sludge hanya dimanfaatkan sebagai pupuk, padahal dalam sludge dimungkinkan masih mengandung mikroorganisme yang dapat mempercepat proses pembentukan biogas. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan <em>sludge</em> biodigester dalam pembentukan biogas dan mengetahui perbandingan optimal komposisi limbah kotoran sapi dengan <em>sludge</em> biodigester sebagai rekomendasi dalam percepatan proses pembentukan biogas. <em>Sludge </em>biodigester merupakan limbah biogas setelah mengalami pengeraman selama 14 hari. Dalam penelitian ini digunakan 3 macam digester dengan variasi komposisi yaitu digester-1 tanpa penambahan sludge biodigester, digester-2 dengan penambahan sludge biodigester sebesar 25%, digester-3 dengan penambahan<em> sludge</em> biodigester sebesar 50%. Volume digester sebesar 30 liter dan waktu pengeraman 14 hari. Parameter pendukung yang diuji meliputi: Volatile Solid (VS), dry content, kadar abu, temperatur, pH isian, komposisi gas. Hasil penelitian menunjukkan bahwa jumlah biogas yang cenderung lebih baik dihasilkan oleh digester-2 dengan bahan campuran 75 % kotoran sapi dan 25 % sludge biodigester. Digester-2 memiliki kadar VS rata-rata 4,62 %, kadar abu 1,82 %, dry content 93,56 %, dengan volume total biogas sebesar 33,4 liter dan kandungan metana rata-rata sebesar 12,19 %. Secara keseluruhan biogas terbentuk pada umur isian 3 hari, dengan rentang suhu 26 °C–30 °C dan pH 6,82–7,44. Penelitian ini memperlihatkan bahwa dengan adanya penambahan sludge biodigester (return sludge) mampu memberikan pengaruh yang lebih baik terhadap produksi biogas jika dibandingkan tanpa adanya penambahan sludge biodigester.</p><p><em>Sludge byproduct of processing cow dung into biogas still contains pollutants such as E. coli, therefore if sludge is discharged directly into the environment it will cause water, soil and air pollution. So far, sludge is only used as fertilizer, whereas in sludge it is possible to still contain microorganisms that can accelerate the process of biogas formation. This study aims to determine the effect of the addition of biodigester sludge in the formation of biogas and determine the optimal comparison of the composition of cow manure with biodigester sludge as a recommendation in accelerating the process of biogas formation. </em><em>Sludge biodigester is a biogas waste after experiencing incubation for 14 days. In this study used 3 kinds of digesters with variations in composition, namely digester-1 without the addition of biodigester sludge, digester-2 with the addition of biodigester sludge by 25 %, digester-3 with the addition of biodigester sludge by 50 %. The digester volume is 30 liters and the incubation time is 14 days. Supporting parameters tested include: Volatile Solid (VS), dry content, ash content, temperature, pH filled, gas composition. </em><em>The results showed that the amount of biogas that tends to be better produced by digester-2 with a mixture of 75 % cow dung and 25 % sludge biodigester. Digester-2 has an average VS content of 4.62 %, ash content of 1.82 %, dry content of 93.56 %, with a total biogas volume of 33.4 liters and an average methane content of 12.19 %. Overall biogas is formed at the age of 3 days, with a temperature range of 26 °C-30 °C and a pH of 6.82-7.44. This research shows that the addition of biodigester sludge (return sludge) can provide a better effect on biogas production when compared without the addition of biodigester sludge.</em></p>

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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