Analisis Potensi Pembangkit Listrik tenaga Sampah Maritim Sampah Maritim di wilayah pesisir Gili Ketapang Probolinggo

Wibowo, Kholifatul Ardi (2026) Analisis Potensi Pembangkit Listrik tenaga Sampah Maritim Sampah Maritim di wilayah pesisir Gili Ketapang Probolinggo. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sampah maritim yang terdampar di pesisir Pulau Gili Ketapang, Kabupaten Probolinggo, merupakan permasalahan lingkungan yang belum termanfaatkan secara optimal. Penelitian ini bertujuan menganalisis karakteristik sampah maritim Gili Ketapang sebagai bahan bakar, menghitung potensi energi listrik yang dapat dibangkitkan, dan menentukan teknologi konversi termal yang paling sesuai berdasarkan karakteristik tersebut.Pengumpulan data dilakukan melalui metode transek pada tiga sisi pantai (utara, timur, dan selatan), menghasilkan 38 item sampah yang teridentifikasi. Pengujian laboratorium di PPNS dilakukan terhadap 8 sampel dari kategori plastik, kain, kayu, dan karet, mencakup pengukuran kadar air (metode gravimetri, SNI 0442:2009), kadar abu (furnace 550°C), dan kadar garam (salinity meter). Perhitungan nilai kalor menggunakan pembobotan komposisi terhadap nilai kalor tinggi (HHV) literatur yang dikoreksi dengan kadar abu, kemudian dikonversi ke nilai kalor bawah (LHV) as received.Hasil pengujian menunjukkan komposisi sampah didominasi plastik (60,53%), diikuti kayu (34,21%) dan kain (5,26%). Karakteristik campuran menunjukkan kadar air 2,17%, kadar abu 7,45%, dan kadar garam 4,14‰. Nilai kalor bawah campuran diperoleh sebesar 29,61 MJ/kg, mendekati batu bara kualitas menengah dan sekitar tiga kali lipat nilai kalor sampah perkotaan (7–12 MJ/kg). Dengan estimasi timbulan 3,36 ton/hari (8.402 jiwa × 0,4 kg/orang/hari, divalidasi data DLH Kabupaten Probolinggo 2025), energi termal yang tersedia mencapai 27.640 kWh/hari (1.152 kW termal).Perbandingan tiga teknologi konversi menghasilkan potensi daya listrik sebesar 253 kW untuk insinerator (η = 22%), 322 kW untuk gasifikasi (η = 28%), dan 207 kW untuk pirolisis (η = 18%). Berdasarkan analisis kesesuaian empat lapis yang mempertimbangkan toleransi terhadap sampah heterogen, kadar abu tinggi, dan kontaminasi garam, insinerator tipe grate skala kecil dipilih sebagai teknologi yang paling sesuai. Meskipun Gili Ketapang hanya menyumbang 12,64% massa timbulan Kecamatan Sumberasih, kontribusi energi termalnya mencapai 31,1% karena nilai kalor sampah maritim tiga kali lipat sampah daratan; pada skala kecamatan, potensi gabungan mencapai 815 kW (7,1 GWh/tahun).Penelitian ini menyimpulkan bahwa sampah maritim Gili Ketapang memiliki potensi energi listrik yang signifikan dan layak dikembangkan sebagai sumber energi lokal melalui teknologi insinerator skala kecil dengan daya 253 kW, yang secara teoretis mencukupi kebutuhan listrik sekitar 2.027 rumah tangga di pulau tersebut.
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Marine debris accumulating on the shores of Gili Ketapang Island, Probolinggo Regency, represents an environmental problem with untapped energy potential. This study aims to analyze the fuel characteristics of Gili Ketapang maritime waste, calculate its electricity generation potential, and determine the most suitable thermal conversion technology based on those characteristics.Data collection was conducted using the transect method on three sides of the beach (north, east, and south), yielding 38 identified waste items. Laboratory testing at PPNS was performed on 8 samples from plastic, textile, wood, and rubber categories, covering moisture content (gravimetric method, SNI 0442:2009), ash content (550°C furnace), and salt content (salinity meter). Heating value calculation used composition-weighted higher heating values (HHV) from literature, corrected for ash content and converted to as-received lower heating value (LHV).Results showed waste composition dominated by plastic (60.53%), followed by wood (34.21%) and textiles (5.26%). Blended characteristics showed moisture content of 2.17%, ash content of 7.45%, and salt content of 4.14‰. The blended lower heating value was 29.61 MJ/kg, approaching medium-grade coal and approximately three times that of urban municipal solid waste (7–12 MJ/kg). With an estimated generation rate of 3.36 tons/day (8,402 residents × 0.4 kg/person/day, validated against 2025 official data from the Probolinggo Regency Environmental Agency), available thermal energy reaches 27,640 kWh/day (1,152 kW thermal).Comparison of three conversion technologies yielded electricity potential of 253 kW for incineration (η = 22%), 322 kW for gasification (η = 28%), and 207 kW for pyrolysis (η = 18%). Based on a four-layer suitability analysis considering tolerance for heterogeneous feedstock, high ash content, and salt contamination, a small-scale grate incinerator was selected as the most suitable technology. Although Gili Ketapang contributes only 12.64% of Sumberasih Sub-district's waste mass, its thermal energy contribution reaches 31.1% as maritime waste heating value is three times that of land-based waste; at the sub-district scale, combined potential reaches 815 kW (7.1 GWh/year).This study concludes that maritime waste from Gili Ketapang has significant electricity generation potential and is viable as a local energy source through small-scale incineration at 253 kW, theoretically sufficient to supply approximately 2,027 households on the island.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Sampah maritim, PLTSM, Insinerator, nilai kalor, Gili ketapang, Renewable Energy, Marine Waste, energy potential
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering T Technology > TD Environmental technology. Sanitary engineering
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	Kholifatul Ardi Wibowo
Date Deposited:	04 Aug 2026 09:19
Last Modified:	04 Aug 2026 09:19
URI:	http://repository.its.ac.id/id/eprint/143437

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