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All Journal Proceedings of Annual International Conference Syiah Kuala University - Life Sciences & Engineering Chapter Jurnal Ilmu Kebencanaan : Program Pascasarjana Unsyiah
FARID MULANA
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Wastewater characteristics from tofu processing facilities in Banda Aceh M. FAISAL; FARID MULANA; POCUT N. ALAM; HIROYUKI DAIMON
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 4, No 1 (2014): Engineering
Publisher : Syiah Kuala University

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Abstract

Tofu is a very favorite food in Asian countries such Indonesia, and is gaining popularity among west countries as well, due to the associated health benefits and its acceptable price. Tofu which is produced by grinding of soy bean produces high of amount wastewater, and is considered as one of the most polluting food-industrial effluent due to its high values of organic pollutants. This paper analyzed  some pollutants parameter discharged from tofu industries in Banda Aceh. The parameter of BOD, COD, MLSS, PO4-P NH3-N, Turbidity and pH were analyzed based on the standard method for the examination of water and wastewater, approved by the EPA. The COD and BOD of wastewater from tofu processing facilities in Banda Aceh is ranging from 5000-8500 and 3500-4500 mg/L, respectively. Site investigation showed that in Banda aceh city, the tofu waste has been disposed into the environment without any treatment, causing bad odours and pollution of the surface, ground water and river
Adsorption of Heavy Metal Cr (VI) Using BioSorbent of Tea Dregs: Experimental and Modeling . Mariana; . Mahidin; Farid Mulana
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 1 (2015): Engineering
Publisher : Syiah Kuala University

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Abstract

Tea plants have been generally known by most of Indonesian as a refreshing drink. Tea leavesusually contain caffeine of 1-4%, tannins of 7-20% and a little essential oil. Powder of tea dregs has the ability to absorb heavy metal of chromium. The research objective was to study the adsorption kinetics of heavy metal ions of Cr (VI) using powder of tea dregs and to study factors that affect adsorption process of chromium metal. The analysis of sample solution concentration of Cr (VI) in this study was using Atomic Absorption Spectrophotometer (AAS). The effect of various process variables such as initial concentration of the metal solution, stirrer speed and concentration of modifying agent of sulphuric acid has been investigated. The results showed that the optimum adsorption process was obtained at adsorbate concentration of 125 ppm with activation process at sulphuric acid concentration of 0.8 M. The highest efficiency of heavy metal adsorption reached 83.24% with adsorption capacity of 5.202925 mg/g bio-sorbent. This adsorption was in accordance with the Langmuir Isotherm models with R2 value of 0.909. This study was also in accordance with kinetics of a second pseudo order with a R2 value of 0.997 and K of 0.752 g/mg. Minute
Adsorption of Pb (II) Heavy Metals from Wastewater Using Modified Rice Husk as Adsorbent Farid Mulana; Abrar Muslim; Pocut Nurul Alam; . Mariana
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 1 (2015): Engineering
Publisher : Syiah Kuala University

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Abstract

Pb (II) heavy metal from wastewater as by-product of industrial activity often causes problem to environment. In order to minimize the amount of Pb (II), wastewater was treated in various ways, including adsorption process using adsorbent. Rice husks that containing lignin, cellulose, and hemicellulose are one of potential candidates to be utilized as adsorbent. The purpose of this research is to modify rice husk by using sodium hydroxide and citric acid and to know adsorption capacity and adsorption efficiency of modified rice husk adsorbent on Pb (II) metal uptake from wastewater. To identify substituted groups, analysis samples by using Fourier Transform Infrared was performed and to determine adsorbed amount of Pb (II) into adsorbent an Atomic Adsorption Spectroscopy Method was conducted. The result showed that optimum adsorption capacity and adsorption efficiency was 5.08 mg/g and 84.52%, respectively. These results were obtained on 60 ppm of Pb (II) adsorbate concentration and 0.8 M citric acid concentration for 150 minutes of contact time
Composites Prepared from Rice Husk and Recycled/Virgin HDPE with Addition of CouplingAgent Farid Mulana
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 2, No 2 (2012): Engineering
Publisher : Syiah Kuala University

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Abstract

Compositesweremade from recycled HDPE and virgin HDPE as matrix and ricehusk as filler and also added with polyethylene-graft-maleic anhydride (MAPE) as a coupling agent to improve the physical and mechanical properties of composites. Theaim of study is to find the optimum condition of the type of used matrixs and the percentage of added coupling agent on the quality of the producedcomposites. Compositeswere prepared byhot press method. Hot press process was performed at a temperature of 150 oC for 30 minutes.After cooling to room temperature, the product was tested oftensile strength, bending strength, thermal test and FTIR. The results show thatcompositesprepared byvirgin HDPE have much betterphysical and mechanical properties compared to composites prepared by recycled HDPE. The highest tensile strength valueof 5.69 MPawas foundon composite withmatrix of virgin HDPE and addition of 4 wt% MAPE. While the highest bending strength valueof 0.35 Mpa was obtained oncomposite with matrix of recycled HDPE and addition of 2 wt% MAPE. The presence of a number of MAPE concentration in the mixture resulted in increased adhesion properties between rice husk and HDPE thereby increasing the physical mechanical properties of composites.
ADSORPSI ION LOGAM Cr (VI) DENGAN MENGGUNAKAN KARBON AKTIF DARI TEMPURUNG KEMIRI (ALEURITES MOLUCCANA) M. Nasruddin; Cut Meurah Rosnelly; Farid Mulana
Jurnal Ilmu Kebencanaan : Program Pascasarjana Unsyiah Vol 4, No 4: November 2017
Publisher : Jurnal Ilmu Kebencanaan : Program Pascasarjana Unsyiah

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Abstract

The purpose of the study was to find out the characteristics and morphology of adsorbent material from candlenut shell to absorbing Cr(VI) metal ion, the effect of stirring time, initial concentration and solution pH adsorbat  on efficiency and capacity of absorption, reaction kinetics, and isotherm adsorption. The fixed variables are adsorbent mass, adsorbate solution volume and stirrer speed.  While the variable that changes consists of the concentration of adsorbate solution, stirring time, and pH. Making activated carbon using NaOH activator with a ratio = 3: 1 and pyrolysis process at a temperature of 700oC for 1 hour. From the results of the adsorption equilibrium research achieved in 150 minutes, 25% absorption efficiency (100 mg/L), adsorption capacity of 3.6 mg/g (200 mg/L). The optimum absorption efficiency occurs in an acidic atmosphere with pH 2-4. Adsorption kinetics followed a second order kinetics model with R2 = 0.999, kenetic constant value (K2) of 8.329 min-1 and adsorption capacity value at equilibrium (qe) of 3.5714 mg/g. Adsorption isotherms follow Langmuir and Freundlich Isotherms because they have a large R2 value. SEM analysis shows that there are many pores on the surface of the activated carbon after the chemical activation process with sodium hydroxide.
Co-Authors . Mahidin . Mariana . Mariana Abrar Muslim Cut Meurah Rosnelly HIROYUKI DAIMON M. Nasruddin Muhammad Faisal POCUT N. ALAM Pocut Nurul Alam