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      Perancangan Teknologi Biokonversi Sulfur Produk Sampingan LNG Menjadi Kompos Sulfat dengan Thiobacillus sp.

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      Date
      2025
      Author
      Rahman, Handito
      Febrita, Joana
      Arif, Chusnul
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      Abstract
      Produksi LNG menghasilkan limbah sampingan berupa sulfur elemental dalam jumlah besar yang belum dimanfaatkan secara optimal dan berpotensi mencemari lingkungan. Di sisi lain, sulfur dalam bentuk sulfat sangat dibutuhkan dalam pertanian sebagai unsur hara esensial. Penelitian ini bertujuan merancang teknologi biokonversi sulfur elemental menjadi senyawa sulfat melalui proses pengomposan dengan metode Aerated Static Pile (ASP), menggunakan bakteri Thiobacillus sp. Penelitian ini menggunakan tiga tingkat debit aerasi (7, 14, dan 23 L/min) terhadap empat variasi jumlah bakteri Thiobacillus sp. (0%, 2%, 5%, dan 8%). Hasil penelitian menunjukkan bahwa peningkatan jumlah bakteri maupun debit aerasi berpengaruh signifikan terhadap peningkatan kadar sulfat dalam kompos akhir. Uji ANOVA dua jalur menunjukkan bahwa debit aerasi 23?L/min dengan bakteri 5?% memberikan interaksi paling signifikan dalam meningkatkan kadar sulfat hingga 9,33?% (P?<?0,001). Namun, waktu pengomposan tercepat dicapai dengan kombinasi jumlah bakteri 8?% dan aerasi 14?L/min, yang mencapai mutu kompos dalam 35 hari, sedangkan kombinasi optimal kadar sulfat memerlukan 42 hari. Hasil ini menunjukkan bahwa bakteri dengan jumlah 5?% optimal untuk mencapai peningkatan sulfat maksimum, sedangkan kombinasi bakteri dengan jumlah 8?% dan aerasi sedang dapat mempersingkat waktu pengomposan
       
      LNG production generates large amounts of elemental sulfur waste, which remains underutilized and potentially harmful to the environment. Meanwhile, sulfate is essential in agriculture. This study aimed to develop a bioconversion technology to transform elemental sulfur into sulfate through composting using the Aerated Static Pile (ASP) method with Thiobacillus sp. Treatments included three aeration rates (7, 14, and 23 L/min) and four bacterial concentrations (0%, 2%, 5%, and 8%). Results showed that both factors significantly increased sulfate levels in the final compost. Two-way ANOVA revealed the most effective combination was 5% bacteria with 23 L/min aeration, yielding 9.33% sulfate (P < 0.001). The fastest composting time (35 days) occurred with 8% bacteria and 14 L/min aeration, achieving standard compost quality standards based on national regulations. The maximum sulfate yield required 42 days. Thus, 5% bacteria is optimal for sulfate production, while 8% with moderate aeration shortens composting time.
       
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      http://repository.ipb.ac.id/handle/123456789/164917
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      • UT - Civil and Environmental Engineering [1042]

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      Indonesia DSpace Group 
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