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Sriwijaya International Seminar on Energy-Environmental Science and Technology
Published by Universitas Sriwijaya
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Social,
Computer Science & IT Energy Environmental Science
Arjuna Subject : -
Articles 35 Documents
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Properties of Magnetite-Chitin Composite as Materials Fahma Riyanti
Sriwijaya International Seminar on Energy-Environmental Science and Technology Vol 1, No 1 (2014)
Publisher : Sriwijaya International Seminar on Energy-Environmental Science and Technology

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Abstract

In this study, magnetite-chitin composite has been synthesized and their apllication for removal Ni(II) from aqueous solution. Chitin synthesized from shrimp shell waste. Magnetite-chitin composite were prepared by reaction of Fe2+ and Fe3+ ion and NH4OH in the presence of chitin. Fourier Transform Infra Red (FTIR), Scanning Electron Microscopy-Energy Dispersive X Ray Spectroscopy (SEM-EDX) and Vibrating Sample Magnetometer (VSM) were used to characterize the adsorbent. The effect of composite dosage, pH and contact time on the adsorption capacity of the adsorbent has also been investigated. The FTIR spectra of magnetite-chitin composite confirmed the successful synthesis which the adsorption peak at 586.3 cm-1 assigned to Fe-O bond. SEM-EDX characterization of magnetite-chitin composite indicated that the surface of composite more solid than chitin and elements of composit contained of magnetite and chitin elements. The magnetite-chitin composite has magnetic properties which the saturation magnetization was 11.27 emu/g. The optimal adsorption of magnetite-chitin composites an initial concentration of Ni(II) was 50 mg/L attained within 3 g of composite dosage, pH value 5 and contact time of 45 minutes with a maximum adsorption capacity of Ni(II) was 37.81 mg/g.
The Effect of Retention Time and Initial Concentration of Ammonia on Biological Treatment for Reducing Ammonia Content in Wastewater Muhammad Faizal
Sriwijaya International Seminar on Energy-Environmental Science and Technology Vol 1, No 1 (2014)
Publisher : Sriwijaya International Seminar on Energy-Environmental Science and Technology

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Abstract

As we know that, urea fertilizer Industry is one of important industries for supporting food consumption. But, in manufacturing process, this industry produces a wastewater containing ammonia. Before ammonia rejected to environment, it should be treated. Biological process at perforated plate with foam as attachment media and addition of ammonia degrading isolate is used as an alternative treatment with observing the effect of residence time and initial concentration of NH3-N on its pollutant degradation. From this research, biological process occur with residence time of 63 to 250 minutes and range of initial concentration from NH3-N 276 to 530 mg/L. The results are as follows: removal of ammonia of 20.92 – 56.52%, COD of 48.46 – 74.52 %, and TKN of 17.69 – 44.89 %.
The Utilization of Mixed Waste of Plastics, Tires, and Crude Palm Oil (CPO) as Asphalt Alternatif Erwana Dewi
Sriwijaya International Seminar on Energy-Environmental Science and Technology Vol 1, No 1 (2014)
Publisher : Sriwijaya International Seminar on Energy-Environmental Science and Technology

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Abstract

Asphalt is the important component in the making of infrastructure and rehabilitation of road in particular on the surface layer. The use of asphalt as a road surface coating materials is increasingly rising in number, so its affect the availability of asphalt was limited. The problem is not in line with the limited supply of petroleum as a primary material for producing natural asphalt. To overcome that problem, it needs an alternative in the form of synthetic asphalt by using any waste materials. The waste materials for making asphalt in this research use the various compositions such as tires, plastic, CPO as mixture compound. The purpose of this research is to establish the exact composition of asphalt Alternatif in order be able to produce asphalt or Bitumen with the characteristics fulfill asphalt Pen 80/100. The methodology of this research is by varying the composition of materials in each mixed waste of bitumen sample. The parameters of mixed waste as bitumen to testing are penetration, ductility, softening point, flash point, and density based on SNI. The result of this research were the compositions of mxture waste are 30 grams tirese, 66 ml CPO, and 15 grams plastie obtained the value of the penetrations of 101,5 mm, flash point is 208oC, and density of 1,028 gr/ml, The ductility value of the mixed asphalt is 3,00 cm, and softening point at 97oC. All those parameters fulfill the standard.
Study about Utilization of Used Oil by Ceramic Membrane Muhammad Hatta Dahlan
Sriwijaya International Seminar on Energy-Environmental Science and Technology Vol 1, No 1 (2014)
Publisher : Sriwijaya International Seminar on Energy-Environmental Science and Technology

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Abstract

High quantity of vehicle use have been triggered to increase the use of oil and caused the increase of used oil in environment. Used oil might contained the metallic elements such as aluminum (Al), iron (Fe), copper (Cu) and zinc (Zn). In this study, ceramic membrane was used to separate the metal elements to utilize the used oil. The objective of this research were to investigate the metal separation process from used oil and to analyze the effect of metal separation by using ceramic membrane. The materials that used as membrane component were zeolite, iron powder and clay. Flux analysis showed that ceramic membrane which contain 30% zeolit, 5% iron powder and 65% clay at flowrate 3L/min were resulted in Al 0.12 ppm, 0.12 ppm Fe, Cu 0.003 ppm and Zn 0.07 ppm .
Fatigue Analysis of Al/Fly Ash Composite from Coal Waste Gustini Lukman
Sriwijaya International Seminar on Energy-Environmental Science and Technology Vol 1, No 1 (2014)
Publisher : Sriwijaya International Seminar on Energy-Environmental Science and Technology

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Abstract

Hot isostatic pressing is one of the method applied in powder technology to produce high density material. This research aims to investigate physical and mechanical properties of aluminium-fly ash composite made by hot isostatic pressing. Material uses was aluminium powder ( 53 μm)as matrix and fly ash powder as filler ( 53 μm). Fly ash powder was calcined at 800o C for 3 hours. Aluminium and fly ash composition were 95%, 100%, and 5%, 0 % weight fraction. Mixtures were stirred for 5 hours and pressed using 50 MPa and 100 MPa pressure to obtain green compacts. Te green compacts were hot isostatically pressed by 120 MPa pressure at temperature variation of 520o C, 540 oC, and 570 oC using 1 hours holding time. Fatigue analysis showed that optimum fatigue resistance was obtained at composition of aluminium95%-5% fly ash composite made by hot isostatic pressing at 540 oC, 120 MPa pressure, and 1 hours holding time. This composite produced minimum fatigue rate of 0,005 mm3/Nm. The specimen experienced in situ reaction caused by aluminium oxidation during sintering process.

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