Mufrodi, Zahrul
Universitas Ahmad Dahlan

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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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (322.372 KB) | DOI: 10.26555/chemica.v1i2.3571

Abstract

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.
Pengolahan Slurry Sampah melalui Microbial Fuel Cells di Pasar Giwangan Yogyakarta Mufandi, Ilham; Azizah, Isti Nur; Efendi, Arpan; Mufrodi, Zahrul
CHEMICA: Jurnal Teknik Kimia Vol 5, No 1 (2018): Juni 2018
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (343.354 KB) | DOI: 10.26555/chemica.v5i1.11868

Abstract

The vegetable waste is one of the biomass types that it can produce electrical energy.  This article focused on electrical production of vegetable waste using microbial fuel cells (MFCS) MFCs is the primary type of the bioelectrochemical system (BECs) that to replaces the biomass to electrical energy spontaneously by activity metabolism of the microorganism. The objectives of this work were to investigate the process of electrical production from Chinese cabbage and the combination of the materials to produce the electrical energy. The experiment was carried out in a laboratory-sall such as mini reactor MFCs, Chinese cabbage as the material of vegetable waste and EM4 as the fermentation. Sample combination was consist of two parts that the first part was used 1 kg Chinese cabbage, 2 liter water and 20 ml EM4. The second part was used 2 kg Chinese cabbage, 1 liter water and 20 ml EM4. The result showed that the electrical voltage in part 1 at 0.362 V and pH at 6 was lower than the electrical voltage in part 2 at 0.724 V and pH at 7. Declining electric energy is influenced by pH as microorganisms living place and the formation process of attached media at the electrode.