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PENGARUH KONSENTRASI CUKA KAYU DARI TEMPURUNG KELAPA TERHADAP KUALITAS IKAN GABUS (Ophiocephalus striatus) Jelita, Rinny
Jurnal Riset Industri Hasil Hutan Vol 4, No 1 (2012)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (127.544 KB)

Abstract

Vinegar wood is a mixture of solutions and dispersions of wood smoke from the pyrolysis. Pyrolysiswas doneat temperature of300oCfor 8hours and thesnake headfishpreservation processwas done bysoakingat vinegar woodconcentrationof 25%, 50% and 75% for 5minutes. Furthermorethe moisture of snake headfish was decreased before stored insealedjarsfor storage time during 1week, 2 weeksand 3weeks.The results showedthat therelative concentration ofphenol, aceticacid and carboxaldehydein coconut shellvinegar wood respectively by 21,65%; 47,90% and 4,54%. The moisture ofsnake headfish that storedfor 1weekwithvinegar woodconcentrationof 25%, 50%, and 75% respectively by60.7%, 66.67%, 67.8%and the moisture that storedfor 2and 3weeks respectively by67.5%, 69.76%, 72.09%, 72.41%, 73.91%, 72.22%. Protein of snake headfish that storedfor 1weekwithvinegar woodconcentrationof 25%, 50%, and 75% respectively by 10.93%, 70.8%, 9.95% and the protein that storedfor 2and 3weeksrespectively by7.07%, 7.05%, 6.99%, 4.55%, 6.49%, 6.79%. Number ofE.coli in snake head fish that storedfor 1weekwithvinegar woodconcentrationof 25%, 50%, and 75% respectivelyby 15APM/g, < 3APM/g, < 3APM/gand the number of E.coli that storedfor 2and 3weeksrespectively by240APM/g, 39 APM/g, < 3APM/g, >2400APM/g, 210 APM/g, < 3APM/g.Keywords: coconut shell, pyrolysis, vinegar wood, preservation, snake head fish
Recovery of Aluminum from Aluminum Coated Plastic Waste using Pyrolysis Process Irawan, Chairul; Jelita, Rinny; Nata, Iryanti Fatyasari
Reaktor Volume 18 No. 1 March 2018
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.18.1.38-44

Abstract

This study aims to separate aluminum metal in aluminum coated plastic waste so that it is known the obtained aluminum characteristics, to study the effects of temperature on the yield of solids and aluminum,  and to get the kinetic parameters that describe the effects of temperature on pyrolysis process rate. Plastic waste was cleaned, dried, cut, and weighed as much as 100 grams. Pyrolysis lasted in room temperature in 2 hours after the pyrolysis temperature was reached, i.e. 450oC. The formed smoke was condensed and weighed every 10 minutes from the first droplet until the pyrolysis time was completed. The remaining solids in the reactor were taken after the pyrolysis was completed and reactor temperature reached room temperature. The aluminum mixture was subsequently melted, molded and cooled. Experiments were repeated in various pyrolysis temperature variations (500°C, 550°C, 600°C and 650°C). The results show that the increase of pyrolysis temperature will decrease the yield of solids, while the aluminum yield remains. The obtained aluminum metal is 5.3% against the initial plastic mass in purity of 95.80%. The kinetic model representing plastic pyrolysis process is a single reaction model with the value of kinetic parameters of pre-exponential factor (A) 18.2689 min-1 and the activation energy value (E) 40.2310 kJ/mole.   Keywords: aluminum, pyrolysis, plastic wastes, temperature, kinetic parameter
PENGARUH KONSENTRASI CUKA KAYU DARI TEMPURUNG KELAPA TERHADAP KUALITAS IKAN GABUS (Ophiocephalus striatus) Jelita, Rinny; Hadi, Abdul; Tuhuloula, Abubakar
Jurnal Riset Industri Hasil Hutan Vol 4, No 1 (2012)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (127.544 KB) | DOI: 10.24111/jrihh.v4i1.1198

Abstract

Vinegar wood is a mixture of solutions and dispersions of wood smoke from the pyrolysis. Pyrolysiswas doneat temperature of300oCfor 8hours and thesnake headfishpreservation processwas done bysoakingat vinegar woodconcentrationof 25%, 50% and 75% for 5minutes. Furthermorethe moisture of snake headfish was decreased before stored insealedjarsfor storage time during 1week, 2 weeksand 3weeks.The results showedthat therelative concentration ofphenol, aceticacid and carboxaldehydein coconut shellvinegar wood respectively by 21,65%; 47,90% and 4,54%. The moisture ofsnake headfish that storedfor 1weekwithvinegar woodconcentrationof 25%, 50%, and 75% respectively by60.7%, 66.67%, 67.8%and the moisture that storedfor 2and 3weeks respectively by67.5%, 69.76%, 72.09%, 72.41%, 73.91%, 72.22%. Protein of snake headfish that storedfor 1weekwithvinegar woodconcentrationof 25%, 50%, and 75% respectively by 10.93%, 70.8%, 9.95% and the protein that storedfor 2and 3weeksrespectively by7.07%, 7.05%, 6.99%, 4.55%, 6.49%, 6.79%. Number ofE.coli in snake head fish that storedfor 1weekwithvinegar woodconcentrationof 25%, 50%, and 75% respectivelyby 15APM/g, < 3APM/g, < 3APM/gand the number of E.coli that storedfor 2and 3weeksrespectively by240APM/g, 39 APM/g, < 3APM/g, >2400APM/g, 210 APM/g, < 3APM/g.Keywords: coconut shell, pyrolysis, vinegar wood, preservation, snake head fish
STUDI KINETIKA PIROLISIS SEKAM PADI: PERBANDINGAN MODEL KINETIKA Jelita, Rinny; Wijayanti, Hesti; Jefriadi, Jefriadi
Konversi Vol 7, No 2 (2018): Oktober 2018
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v7i2.6496

Abstract

Abstrak: Peningkatan populasi dunia menuntut penambahan kebutuhan energi yang kian langka sehingga dibutuhkan sumber energi alternatif seperti bio oil. Sekam padi yang berupa limbah dapat diolah menghasilkan bio oil melalui proses pirolisis yang sederhana dan ramah lingkungan. Penelitian ini bertujuan mempelajari reaksi dekomposisi sekam padi pada proses pirolisis dan mendapatkan parameter kinetika yang terlibat dalam reaksi pirolisis sekam padi. Sekam padi dihaluskan dan diayak hingga berukuran 0,25-1 mm, dikeringkan menggunakan oven dengan suhu 80˚C selama 180 menit dan dimasukkan ke dalam reaktor pirolisis sebanyak 500 gram. Proses pirolisis berlangsung sejak suhu kamar hingga 1 jam setelah suhu tercapai, yaitu pada suhu 550oC. Asap yang terbentuk dikondensasikan, ditampung sebagai bio oil dan dicatat setiap 10 menit sejak tetesan pertama keluar hingga waktu pirolisis selesai. Berat bio oil  yang dihasilkan digunakan untuk mensimulasikan perubahan massa sekam padi selama pirolisis berlangsung. Penentuan parameter kinetika dilakukan dengan membandingkan tiga model kinetika. Hasil penelitian menunjukkan bahwa pirolisis sekam padi berlangsung mengikuti mekanisme reaksi orde satu dengan parameter kinetika pre-exponensial faktor (A) 0,0347 s-1 dan energi aktivasi (E) 27,9517 kJ/mol. Parameter kinetika yang menghubungkan harga konstanta laju reaksi dengan suhu mengikuti persamaan Arhenius. Kata kunci: dekomposisi, kinetika, pirolisis, sekam padi 
PYROLYSIS OF CASSAVA BAGASSE INTO BIO-OIL USING Ni/NZA CATALYSTS Jefriadi, Jefriadi; Bahri, Syaiful; Sunarno, Sunarno; Jelita, Rinny
Konversi Vol 8, No 2 (2019): Oktober 2019
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v8i2.7194

Abstract

Cassava bagasse is a solid tapioca industry waste that can be used as an energy source. In this study, cassava bagasse was pyrolyzed to produce bio-oil and studied the effect of Ni/NZA catalysts on yield, heating value and distribution of bio-oil products. The making of Ni/NZA catalyst starts with the process of activating natural zeolite to produce natural zeolite activated (NZA). Furthermore, impregnation of Ni metals in NZA with Ni levels 1, 2 and 3% w/w (Ni/NZA). The next step is calcination, oxidation and reduction. Cassava is peeled, shredded, washed, filtered and dried and then mashed and screened with a 60 and 80 mesh sieve to obtain cassava bagasse biomass with a size of -60+80 mesh. 50 grams of cassava bagasse with 500 ml silinap and 1.5 gram Ni/NZA catalyst are pyrolyzed at 320oC with nitrogen gas flow of 80 mL/min. Bio-oil products are analyzed by the heating value and distribution of the products. The yield of bio-oil obtained on pyrolysis using 0% Ni/NZA was 54.27% and pyrolysis using 2% Ni/NZA obtained the highest yield of 61.87%. The highest bio-oil heating value was obtained in pyrolysis using 0% Ni/NZA which is 46.78 MJ/kg and lower with increasing Ni levels in NZA. The results of GC-MS analysis of the bio-oil products showed that the use of 1% Ni/NZA catalyst significantly increased the percent area of several components i.e. 2,4,4-trimethy-l-1-Pentene, 2,5-dimethyl-2,4-Hexadiene, and 2,4,4-trimethyl-2-Pentene and decreases the percent area of some other components i.e. 1-bromo-3-methyl-Cyclohexane, 2-methyl-1-Propene,tetramer, 1-(1,1-dimethylethoxy)-3-methyl-Cyclohexene and 3-(3,3-dimethylbutyl)-Cyclohexanone.