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Modifikasi Limbah Abu Layang menjadi Adsorben untuk Mengurangi Limbah Zat Warna pada Industri Tekstil Sutrisno, Bachrun; Hidayat, Arif; Mufrodi, Zahrul
CHEMICA: Jurnal Teknik Kimia Vol 1, No 2 (2014): Desember 2014
Publisher : Universitas Ahmad Dahlan

Abundant supplies of coal make this compound as alternative fuels, especially for the industry. However, using of coal has shortcomings; incomplete combustion of coal produces solid waste that often called the fly ash. Results of mineral analysis showed that fly ash contain metal oxides such as silica (SiO2), alumina (Al2O3) and iron (Fe2O3). The presence of silica and alumina components allows fly ash to be synthesized into materials that have structure similar to zeolite. This material is known as zeolite like materials (ZLM).This study aims to synthesize ZLM of fly ash as adsorbent material. To determine the successful of synthesis also has been analyzed physicochemical properties of zeolite-like material. Then the results are used as adsorbent of textile dyes.The results showed that fly ash can be synthesized into zeolite-like material, this is indicated by the increasing of physicochemical properties. The experiment shown that the adsorption ability of fly ash in the reduction of textile dyes after modifiedis better.

SINTESIS KATALIS CuO-ZEOLIT ALAM UNTUK REAKSI REDUKSI GAS NO2 MENGGUNAKAN REDUKTOR SENYAWA HIDROKARBON Arif Hidayat; Sutarno Sutarno
Teknoin Vol. 19 No. 1 (2013)
Publisher : Faculty of Industrial Technology Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/.v19i1.4406

The exhaust gases from automobile engines and industrial boilers contain mainly oxides of carbon (CO and CO2), oxides of nitrogen (NOx), hydrocarbons (HC), sulphur dioxide (SO2), particulates and soot. One of the most urgent problems is removal of NOx, typically produced during high-temperature combustion and contribute to formation of smog and ground-level ozone by reacting with hydrocarbons in presence of sunlight. Preparation, and modification of CuO / natural zeolite as well as their characterizations had been carried out. The aim of this research is to prepare the best characters catalyst for selective catalytic reduction of NOx. The CuO / natural zeolite was prepared by mechanically mixing of 100 g of natural zeolite, which it has been heated at 400oC, with CuNO3.3H2O powder, The weight ratio of the mixture was 2.5 and 5% (w/w). The mixture was then calcined at 400oC for 6 hours. The calcined product was characterized using X-Ray Diffractometry, X-Ray Fluorescence analysis and Gas Sorption Analysis methods to determine its physicochemical properties changes caused by mixing and calcination. The characterization results showed that dispertion of CuNO3.3H2O on zeolite resulted in the increasing of copper concentration on CuO / natural zeolite. The concentration of Cu on natural zeolite was found to be 0.15% (w/w), meanwhile on CuO / natural zeolite was 2.29% (w/w). From X-Ray Diffractometry analysis result no information was found that CuO was dipersed on natural zeolite. It was caused by overlapping of the reflections of zeolite with reflections of CuO. On the otherhand, the gas sorption analysis result exhibited that the dispersion of CuO on zeolite resulted in the decreasing of total pore volume as well as specific surface area of the natural zeolite. The specific surface areas of natural zeolite and CuO / natural zeolite were 228,1 and 172,1 m2/g, respectively, meanwhile the total pore volumes of natural zeolite and CuO / natural zeolite were 0.2316 and 0.2108 m3/g

SINTESIS METIL ESTER DARI MINYAK DEDAK PADI MENGGUNAKAN KATALIS KALIUM DENGAN PENGEMBAN ZEOLIT ALAM Arif Hidayat; Septya Chilya Faizah; Resita Trisnaningtyas
Teknoin Vol. 23 No. 1 (2017)
Publisher : Faculty of Industrial Technology Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknoin.vol23.iss1.art3

Biodiesel is an alternative renewable energy source having many advantages such as environmental friendly, non-toxic, and has lower emission gases. Biodiesel is produced from transesterification of vegetable oils or animal fat. In this research, the transesterification of rice barn oil (RBO) using the solid base catalyst was studied. The performances of the catalysts were evaluated in terms of the reaction temperatures, the molar ratios of methanol to oil, and the catalyst loading. The effects of the mass ratio of catalyst to oil (1-10%), the molar ratio of methanol to oil (6:1-12:1), and the reaction temperature (40-60 oC) were studied for the yield of biodiesel to optimize the reaction conditions. The results showed that the optimal conditions were a methanol to oil molar ratio of 12:1, the amount of catalyst of 10%wt. of oil, and reaction temperature of 60 oC. The physicocharacteristics of the catalysts were analyzed by Nitrogen gas adsorption, surface functional groups by Fourier transform infrared spectroscopy (FT-IR), X-Ray Fluorescence Spectroscopy (XRF), and XRay Diffraction (XRD).

PHYSICO â€“ CHEMICAL CHARACTERISTICS OF BIO â€“ OIL FROM NANNOCHLOROPSIS SP AND TETRASELMIS AS A SUSTAINABLE ENERGY SOURCE Arif Hidayat
Teknoin Vol. 22 No. 10 (2016)
Publisher : Faculty of Industrial Technology Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknoin.vol22.iss10.art6

Mikroalga saat ini dipromosikan sebagai bahan baku biofuel generasi ketiga yang ideal karena laju pertumbuhannya yang cepat, kemampuan fiksasi CO2 dan kapasitas produksi lipida yang tinggi; Mereka juga tidak bersaing dengan makanan atau tanaman pakan, dan bisa diproduksi dilahan yang tidak dapat dipanen. Mikroalga mampu menghasilkan 15-300 kali lebih banyak minyak untuk produksi biodiesel daripada tanaman tradisional berdasarkan area. Selanjutnya dibandingkan dengan tanaman konvensional yang biasanya dipanen sekali atau dua kali setahun, mikroalga memiliki siklus panen yang sangat singkat, sehingga menghasilkan banyak atau panen terus menerus dengan hasil panen yang meningkat secara signifikan. Tujuan dari penelitian ini adalah untuk mengevaluasi sifat fisikokimia dan komposisi minyak yang diambil dari dua jenis bubuk mikroalga kering, Nannochloropsis sp. Dan Tetraselmis sp. Bio-oil diekstraksi dari sampel alga kering. Ekstraksi bio-oil dilakukan dengan ekstraksi pelarut dengan mencampur pelarut kloroform-metanol. Komposisi minyak alga ditentukan dengan analisis kromatografi gas. Hasilnya menunjukkan 20-29% jumlah minyak disemua sampel alga. Tetraselmis sp. Menunjukkan jumlah minyak maksimal 28,1%.

Exergy Analysis of Microalgae Thermochemical Conversion using Aspen Plus Simulation Cholila Tamzysi; Muflih Arisa Adnan; Fadilla Noor Rahma; Arif Hidayat
Reaktor Volume 20 No.4 December 2020
Publisher : Dept. of Chemical Engineering, Diponegoro University

Microalgae is known as the future bioenergy resources due to its unlimited potential and availability. One of the numerous paths to acquire an energy source is gasification, which produce syngas and methane as a hydrocarbon fuel or feedstock product. To set up an efficient gasification plant, several essential information is needed including the effect of oxidizing agent and steam to carbon (S/C) ratio to energy efficiency on certain biomass properties. This paper aims to study the highest exergy possibility on microalgae gasification process by examining the effect of steam and air flowrate independently via ASPEN Plus simulation. The result was validated with experimental data to verify the simulation reliability. It was found that the thermodynamic based simulation is suitable to predict the reactor behavior and acquire an optimum operating condition.Keywords: microalgae; gasification; exergy; simulation

Modifikasi Limbah Abu Layang menjadi Adsorben untuk Mengurangi Limbah Zat Warna pada Industri Tekstil Bachrun Sutrisno; Arif Hidayat; Zahrul Mufrodi
CHEMICA: Jurnal Teknik Kimia Vol 1, No 2 (2014): Desember 2014
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v1i2.3571

Abundant supplies of coal make this compound as alternative fuels, especially for the industry. However, using of coal has shortcomings; incomplete combustion of coal produces solid waste that often called the fly ash. Results of mineral analysis showed that fly ash contain metal oxides such as silica (SiO2), alumina (Al2O3) and iron (Fe2O3). The presence of silica and alumina components allows fly ash to be synthesized into materials that have structure similar to zeolite. This material is known as zeolite like materials (ZLM).This study aims to synthesize ZLM of fly ash as adsorbent material. To determine the successful of synthesis also has been analyzed physicochemical properties of zeolite-like material. Then the results are used as adsorbent of textile dyes.The results showed that fly ash can be synthesized into zeolite-like material, this is indicated by the increasing of physicochemical properties. The experiment shown that the adsorption ability of fly ash in the reduction of textile dyes after modifiedis better.

PENGARUH TEMPERATUR PROSES PIROLISIS TANDAN KOSOSNG KELAPA SAWIT (TKKS) TERHADAP KARAKTERISTIK BIO - OIL Arif Ferdiyanto; Fajar Hamida Munfaridi; Arif Hidayat
Khazanah: Jurnal Mahasiswa Vol. 8 No. 1: Januari 2016
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/3812016

Tandan kosong kelapa sawit (TKKS) merupakan biomassa yang banyak ditemukan di Indonesia dan sangat berpotensi untuk dijadikan bahan bakar karena pasokannya melimpah dan kandungan karakteristiknya menguntungkan. Salah satu metode yang dapat dan banyak digunakan adalah pirolisis. Metode pirolisis dipertimbangkan karena prosesnya tergolong mudah dan ramah lingkungan. Tujuan penelitian adalah mengetahui pengaruh variasi suhu pirolisis terhadap yield dan karakteristik kandungan kimiawi bio-oil. Pirolisis dilakukan dengan memanaskan biomassa dalam reaktor batch dengan variasi suhu 4500C, 5000C, 5500C, dan 6000C. Hasil pirolisis berupa cairan dipisahkan menjadi hasil bening (liquid smoke) dan hasil kental (bio-oil). Dari hasil percobaan diketahui yield tertinggi bio-oil diperoleh pada suhu 6000C. Bio-oil kemudian diuji menggunakan GC-MS untuk mengetahui komponen kimianya. Hasil bening didominasi oleh asam asetat, sedangkan bio-oil didominasi oleh phenol,acetone, ester, dan beberapa senyawa mudah terbakar yaitu 1-bromo-2- methylbutane, furanmethanol dan senyawa-senyawa hidrokarbon dalam jumah sedikit. Biooil suhu 6000C menghasilkan asam oleat dalam jumlah yang cukup besar, yaitu 32,54%.

Sugarcane Bagasse Biochar as a Solid Catalyst: From Literature Review of Heterogeneous Catalysts for Esterifications to the Experiments for Biodiesel Synthesis from Palm Oil Industry Waste Residue Arif Hidayat; Winarto Kurniawan; Hirofumi Hinode
Indonesian Journal of Science and Technology Vol 6, No 2 (2021): IJOST: VOLUME 6, ISSUE 2, September 2021
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v6i2.34498

In this study, the utilization of sugarcane bagasse biochar (SCBB) as a solid catalyst was investigated for biodiesel production from palm oil industry waste residue. The catalyst was synthesized by sulfonation of SCBB to attach sulfonate functional group. Several analyses such as Nitrogen Gas Sorption Analysis, acidity, Fourier Transform Infra-Red spectroscopy, and X-ray powder diffraction (XRD) were applied to determine the properties of SCBB catalyst. The SCBB catalysts were tested to esterify the palm oil industry waste residue which contains of Free Fatty Acids (FFAs). The SCBB catalyst activity test revealed that the variables including catalyst amount, methanol to PFAD mass ratio, and temperature influenced the FFAs conversion. The highest of FFAs of 86.1% was reached at reaction temperature of 65 °C with the PFAD to methanol mass ratio of 4:1, and catalyst amount of 5 wt.% PFAD. The E-R kinetic model as developed can be described the mechanism of esterification reaction

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