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All Journal Journal of Degraded and Mining Lands Management Gravitasi
Mashuni
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Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Computer Science & IT Earth & Planetary Sciences Energy Environmental Science Materials Science & Nanotechnology Physics

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Analisis Pengaruh Temperatur Pirolisis terhadap Kualitas Bahan Bakar Minyak dari Limbah Plastik Polipropilena: (Analysis of Pyrolysis Temperature Effect on Fuel-Oil Quality from Polypropilene Plastict Waste) Jahiding, M.; Nurfianti, Eva; S Hasan, Erzam; S Rizki, Ratih; Mashuni
Gravitasi Vol. 19 No. 1 (2020)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/gravitasi.v19i1.15177

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh temperatur pirolisis terhadap kualitas fuel-oil dari limbah Polipropilena. Metode yang digunakan adalah pirolisis cepat (fast-pirolisis) tanpa menggunakan katalis. Analisis fisis yang dilakukan meliputi: densitas, viskositas, dan nilai kalor. Limbah plastik Polipropilena dipirolisis dengan temperatur 450 oC, 500 oC dan 550 oC. Hasil analisis menunjukkan bahwa semua profil temperatur memenuhi standar bbm konvensional yang menyerupai BBM konvensional jenis bensin. Pada masing-masing temperatur pirolisis 450, 500 dan 550 °C diperoleh berturut-turut: rendemen 16; 64 ; 70 %; viskositas 0,76; 0,92; 1,12 cP, densitas 0,750; 0,764; 0.756 gr/ml dan nilai kalornya 11.388; 11.316; 11.356 kkal/kg. Berdasarkan analisis yang telah dilakukan bahan bakar minyak hasil pirolisis limbah plastik polipropilena dapat digunakan sebagai pengganti bahan bakar konvensional karena sudah memenuhi standar karakteristik bahan bakar sesuai American Standard and Testing Material (ASTM).
Pengaruh Kosentrasi Zeolit Terhadap Kualitas Bio-Oil Yang Diproduksi dari Limbah Sabut Kelapa Muda (Cocos nucifera) Menggunakan Metode Piro-katalitik : (Effect of Zeolite Concentration on the Quality of Bio-fuel Produced from Coconut Fiber (Cocos nucifera) Using the Piro-catalytic Method) Jahiding, M.; Usman, Ida; Ratih Samsusih Rizki; Haryani; Mashuni
Gravitasi Vol. 19 No. 2 (2020)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/gravitasi.v19i2.15359

Abstract

Cadangan energi di Indonesia terutama energi fosil (minyak bumi, batubara) semakin menipis. Oleh karena itu diperlukan usaha penghematan dan pengembangan sumber energi arternatif. Salah satu cara yaitu dengan mengkonversi limbah sabut kelapa muda (Cocos nucifera) menjadi bio-fuel. Penelitian ini dilakukan menggunakan metode piro-katalitik pada temperature 600 ⁰C. Tujuan dari penelitian ini adalah untuk mempelajari pengaruh konsentrasi zeolit (3%, 5%, 7%) terhadap kualitas bio-fuel. Uji kualitas BBM meliputi viskositas, densitas, specific gravity, API gravity, nilai kalor dan analisis GC-MS. Hasil penelitian menunjukkan bahwa konsentrasi katalis zeolit berpengaruh pada kualitas bio-fuel. Nilai kalor yang dihasilkan untuk setiap kosentrasi katalis 3%, 5%, 7% berturut-turut adalah 10.412 kkal/kg; 10.421 kkal/kg; dan 10.417 kkal/kg. Analisis komposisi kandungan bahan bakar dalam bio-fuel menggunakan GC-MS diperoleh senyawa acetid acid, phenol, furfural, pyridine, creosol, benzene, ethanol dan aseton dengan persentase bahan bakar mencapai 73,46%, sehingga bio-fuel dari limbah sabut kelapa muda (Cocos nucifera) dapat digunakan sebagai sumber energi.
Effect of cogongrass biochar enriched with nitrogen fertilizer dissolved in seaweed liquid extract on soil water content of Ultisol Kilowasid, Laode Muhammad Harjoni; Alam, Syamsu; Rakian, Tresjia Corina; Ansar, Nurul Awalia; Nurfadillah; Ramdan, Nurfatihah Hijrah; Jaya, Irfan; Suryana; Agustin, Widia; Rahni, Nini Mila; Mashuni; Safuan, La Ode
Journal of Degraded and Mining Lands Management Vol. 11 No. 3 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.113.5585

Abstract

Ultisol dry land is characterized by significantly low organic carbon content, an important factor influencing soil water content and physico-chemical dynamics. The addition of N fertilizer dissolved in seaweed liquid extract as an enrichment solution can change the character of biochar. Therefore, this study aimed to analyze the characteristics of cogongrass biochar enriched with dissolved N fertilizer in seaweed extract of different species and assess its impact on soil water content in Ultisol. Urea was used as a nitrogen source, and biochar enriched with N fertilizer dissolved in seaweed liquid extract from Kappapychus alvarezii, Sargassum sp., and Ulva lactuca was tested. Biochar dose used was 20% of soil weight with a 10% extract concentration for each type. Furthermore, five-level treatments were tested in a pot experiment, namely (i) without biochar, (ii) biochar unenriched, (iii) enriched with N fertilizer dissolved in K. alvarezii extract, (iv) enriched with N fertilizer dissolved in Sargassum sp. extract, and (v) biochar enriched with N fertilizer dissolved in U. lactuca extract. Each treatment was repeated three times, following a randomized block design. The results showed that cogongrass biochar enriched with N fertilizer dissolved in seaweed extract had a more amorphous surface morphology structure. The proportion of elements and functional groups in cogongrass biochar changed. Enriched biochar increased Ultisol moisture levels, but water holding capacity and retention were lower than the unenriched sample.
Co-Authors Agustin, Widia Ansar, Nurul Awalia Haryani Ida Usman JAYA, IRFAN La Ode Safuan Laode Muhammad Harjoni Kilowasid M. Jahiding, M. Nini Mila Rahni Nurfadillah Nurfianti, Eva Ramdan, Nurfatihah Hijrah Ratih Samsusih Rizki S Hasan, Erzam S Rizki, Ratih Suryana SYAMSU ALAM TRESJIA CORINA RAKIAN, TRESJIA CORINA