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All Journal Proceedings of Annual International Conference Syiah Kuala University - Life Sciences & Engineering Chapter Jurnal Purifikasi Prosiding Seminar Nasional Universitas Serambi Mekkah Jurnal Inovasi Ramah Lingkungan
Izarul Machdar
Department of Chemical Engineering, Faculty of Engineering, University of Syiah Kuala, Darussalam, Banda Aceh 23111, Indonesia
Agriculture, Biological Sciences & Forestry Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Other

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Use of G3-DHS Bioreactor for Secondary Treatment of Septic Tank Desludging Wastewater . Faisal; Izarul Machdar; Syaifullah Muhammad; Takashi Onodera; Kazuaki Syutsubo
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 1 (2015): Engineering
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (138.889 KB)

Abstract

Study was done for the use of the third-generation of downflow hanging sponge (G3-DHS) bioreactor for secondary treatment of septic tank desludging wastewater. The main objective of this study was to evaluate the prospective system of G3-DHS bioreactor to be applied in Indonesia. During experiment, the G3-DHS bioreactor kept a relatively high dissolved oxygen concentration under natural aeration. At a relatively short hydraulic retention (HRT) of 3 h, the G3-DHS bioreactor could remove up to 21% (SD = 15%) of total COD, 21% (SD = 7%) of filtered-COD, 58% (SD = 24%) of unfiltered-BOD, and 33% (SD = 24%) of ammonium removal. The final effluent had an unfiltered-BOD of only 46 mg/L (SD = 20 mg/L) that it was below the Indonesian standard (unfiltered-BOD = 100 mg/L) for thresholds of domestic wastewater treatment plants effluent.
AMMONIA REMOVAL BEHAVIOR IN THE DOWNFLOW HANGING SPONGE BIOREACTOR Izarul Machdar
Purifikasi Vol 8 No 2 (2007): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v8.i2.134

Abstract

Ammonia removal behavior in the DHS has been studied extensively including apply a DO microelectrodes and a gold method of microbial identification, i.e. Fluorescence In Situ Hybridization (FISH) approach by means of 16S rRNA-targeted oligonucleotide probes. With the HRT of 2 h, the ammonia removal rate in the bioreactor was achieved 0,24 kgN.m-3.d-1, and nitrogen-losing rate was approximate 0,08 kgN.m-3.d-1. Moreover, the most important of this system is no requirement external aeration input. FISH of the DHS sludge revealed that nitrifiers could be detected with Nso190, NSR1156, or NIT3 probe, form dense clusters, and they mainly settled in the surface region of the heterotrophic aggregates. Ammonia oxidizers and nitrite oxidizers grown in DHS sludge in separated solitary occurrence. Nitrospira spp. were more likely responsible to oxidize of nitrite rather than Nitrobacter spp.
CHROMIUM AND LEAD REMOVAL USING SYNTHESIZED NANOCRYSTALLINE ZEOLITE Izarul Machdar
Purifikasi Vol 10 No 1 (2009): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v10.i1.162

Abstract

Zeolite Y nanocrystal was synthesized from a clear solution at temperature of 80-1500C with 6.38 of Si/Al molar ratio by using Aluminum isopropoxide (Al(OiPr)3) and Ludox LS as alumina and silica source, Tetrametylammonium Hidroxide (TMAOH) and Tetrametylammonium Bromide (TMABr) as first and second organic template, respectively. The products were characterised by X-Ray Diffractometer (XRD) and Scanning Electron Microscopy (SEM) to identify the structure and particle sizes. The image measurements of the particle size record that the average particle sizes of FAU-5, FAU-20 and FAU-35 are 116.46 nm, 169.33 nm and 178.12 nm, respectively. Furthermore, 0.5988 g and 0.6001 g of yields with average particle sizes of 116.46 nm and 43.76 nm can be obtained for FAU-5 (single organic template) and FAU-10 (two organic template, TMABr/TMAOH=0.15) samples, respectively. The smallest average particle size observed is 33.87 nm (FAU-15). The synthesised nanocrystalline zeolite Y was applied for Pb(II) and Cr(III) removal and the results show that the nano crystal samples have very good performance. On FAU-37 at 10 ppm, 30 ppm, 50 ppm and 80 ppm of initial concentration, the adsorption of Pb is 23.56 mg/g, 109.71 mg/g, 181.02 mg/g and 231.46 mg/g, respectively at 216 h and adsorption capacities of Cr are 23.18 mg/g, 84.94 mg/g, 109.75 mg/g and 147.37 mg/g.
A NOVEL TREATMENT OF DYE WASTEWATER OF BATIK INDUSTRY BY A COMBINATION OF ALUMINIUM SULFATE AND NATURAL IRON COATED-SAND Izarul Machdar
Purifikasi Vol 12 No 2 (2011): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v12.i2.199

Abstract

This paper presents the results of dye wastewater treatment of a batik industry in a batch experiment. The experiment was carried out by adding a mixture of aluminium sulfate as coagulant and natural iron oxide-coated sand (NICS) into the wastewater. Sedimentation rate of the formed flock was enhanced by a magnet. Initial COD concentration of the dye wastewater of 1060 mg/L was used in the experiment. Results of this research showed that the efficiency of the dye removal and settling time were affected by iron sand entrapped in the formed flocks. The highest efficiency of COD removal was 95%, or similar to the final COD concentration of 45 mg/L at settling time of 10 minutes. It could be concluded that the combination of aluminium sulfate and NICS could effectively be used in the treatment of the dye wastewater from batik industry.
MODIFIKASI MEMBRAN POLYETHERSULFONE (PES) MENGGUNAKAN PELARUT NORMAL METHYL PYROLYDONE (NMP) SECARA NON-SOLVENT INDUCE PHASE SEPARATION (NIPS) Umi Fathanah; Izarul Machdar; Medyan Riza; Nasrul Arahman; Mirna Rahmah Lubis; Mukramah Mukramah
Prosiding Seminar Nasional USM Vol 2, No 1 (2019): Semnas Multidisiplin Ilmu
Publisher : Universitas Serambi Mekkah

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Abstract

Clean water is a natural resource which is indispensable, due to the increase of population, water demand is also increasing. so that technology is needed in water treatment to satisfy the needs of clean water. Membrane separation technology is a technology that has grown rapidly in addressing the problems of water treatment. The purpose of this study was to determine the characteristics and performance of Polyethersulfone (PES) membranes modified with magnesium hydroxide or Mg(OH)2 and modification using chitosan. Membrane preparation was carried out by the phase inversion method, using an 18 wt% PES polymer modified with the addition of 0.2 wt% of Mg(OH)2, and modification using 0.2 wt% of chitosan. Furthermore, it was dissolved in N-Methyl pyrrolidone (NMP) as a solvent and the dope solution was stirred for 24 hours until it was homogeneous. Membrane characterization includes functional group analysis and measurement of the membrane water contact angle. Whereas membrane performance testing is done through permeability measurement and membrane rejection using a dead end ultrafiltration module. The results showed that the hydroxyl group (-OH) contained in Mg(OH)2 and chitosan were able to improve the hydrophilicity of the PES membrane. The membrane permeability coefficient modified with Mg(OH)2 gives a value of 8.236 L/m2.h.bar, while modifying the membrane using chitosan produces a value of 6.237 L/m2.h.bar. Both of them experience an increase compared to pure PES membrane without modification that has a permeability value of 4.123 L/m2.h.bar.
Formulasi dan uji agent untuk produksi light concrete Farah Dwi Vaniya; Desri Kesumaning; Izarul Machdar
Jurnal Inovasi Ramah Lingkungan Vol 1, No 1 (2020): Jurnal Inovasi Ramah Lingkungan
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (185.387 KB)

Abstract

In Indonesia, one of the most common problems is earthquakes. Indonesia is an earthquake-prone area that requires special materials for building construction. Lightweight concrete or light-concrete is one of the alternatives that can be applied to replace conventional concrete that is relatively heavier in the earthquake areabuildings construction. Light-concrete is not only strong, but also prudent in using aggregate, so it can be used for areas where there is not sufficient aggregate. One of the materials of light-concrete is a foaming agent that serves to create gas / air bubbles in cement mortar so that there are many pores in the concrete that can reduce concrete density to make the concrete lighter. The use of foaming agent has been widely applied, but the foaming agent is still imported from abroad. This study is conducted to meet the needs of cheaper foaming agent that can be obtained domestically. The basic components of the foaming agent comprise a mixture of solvent and additive surfactants. In this study, synthetic surfactants (sodium dodecyl sulfate), solvent propylrne glycol, aquades and NaCl were used. From the various concentrations of the above components, measurements of surface tension, foamness, foam density, and average grain size of the foam were conducted to obtain the best solution formulations.
Co-Authors . Faisal Desri Kesumaning Farah Dwi Vaniya Kazuaki Syutsubo Medyan Riza Mirna Rahmah Lubis Mukramah Mukramah Nasrul Arahman Syaifullah Muhammad Takashi Onodera Umi Fathanah