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POTENSI PEMANFATAN LIMBAH BIOMASSA SERBUK GERGAJI KAYU BESI (Eusideroxylon zwageri) MENJADI ASAP CAIR MELALUI PROSES PIROLISIS Muzdalifah, Muzdalifah; Syarif, Takdir; Aladin, Andi
JURNAL ILTEK Vol 15, No 2 (2020): ILTEK : Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Islam Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (167.275 KB) | DOI: 10.47398/iltek.v15i2.523

Abstract

Limbah serbuk kayu hasil proses penggergajian ataupun limbah dari penghalusan kayu memilki banyak manfaat bila diproses lebih lanjut. Salah satu yang dapat dilakukan yaitu dengan memanfaatkan limbah serbuk gergaji kayu menjadi asap cair. Penelitian ini dilakukan dengan tujuan untuk mengetahui potensi pemanfaatan limbah biomassa serbuk gergaji kayu besi menjadi asap cair melalui proses pirolisis. Metode penelitian ini dilakukan dengan cara menyiapkan sampel limbah serbuk gergaji kayu besi sebanyak 1000 gram, kemudian dilanjutkan dengan metode pirolisis selama 120 menit dan temperatur pirolisis yang dipertahankan yaitu 400 oC, hasil pirolisis diperoleh tiga produk yaitu asap cair, charcoal dan sedikit tar, asap cair yang dihasilkan kemudian ditimbang dan diukur volumenya, analisa dilakukan dengan metode MC-GS. Hasil penelitian ini menunjukan bahwa secara batch diperoleh kandungan total Phenol  49% area. Kandungan total Benzen sebesar 12% area. Kandungan total asam sebesar 11% area. Yield asap cair sebesar 38%. Dari hasil analisa yang telah dilakukan, tidak ditemukan adanya senyawa benzopyren, yang berarti bahwa asap cair yang dihasilkan bagus digunakan sebagai bahan pengawet pangan.
Kinetics of Ferrous Sulfate Catalytic Oxidation from Dissolved Iron Waste in Sulfuric Acid Sulistyo, Hary; Rahayu, Suprihastuti Sri; Sediawan, Wahyudi Budi; Sarto, Sarto; Syarif, Takdir
ASEAN Journal of Chemical Engineering Vol 9, No 2 (2009)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (198.954 KB) | DOI: 10.22146/ajche.50105

Abstract

Iron waste was dissolved in a sulfuric acid to form a concentrated FeSO4- H2SO4 solution This research was conducted by catalytic oxidation of ferrous sulfate using manganese dioxide as catalyst to form a ferric sulfate. Catalytic oxidation reaction using a catalyst of manganese dioxide is a three phase heterogeneous reaction. This reaction kinetics is quite complex. This study aims to develop a mathematical modeling of reaction kinetics for three phases, gas, liquid and solid. Oxidation was undertaken on the condition of isothermal and isobaric in the threeneck flask as reactor. Experiment was run in the temperature range of 313 K to 363 K and catalyst concentration of 4.16 10 -3 gL-1 to 25 10 -3 gL-1.Results indicated that the oxidation rate increased with the increase of temperature and catalyst concentration. Reaction kinetics can be approached with quasi steady state model and chemical reactions on the surface of the catalyst are a step controls the reaction kinetics. The relation between reaction rate constant and temperature in the following Arrhenius form:kR = 2182exp (-17613/RT),L g.eq-1min-1 Manganese dioxide as catalyst can increase a reaction rate and reduce the activated energy which can be expressed in the following equation E = 20129.025exp(-0.0472mk),Jmol-1 Activated energy was found from 14414 Jmol-1to 19747 Jmol-1 and maximum ferrous sulfate conversion was of 97.20%. Those values were similar result with the literature available.