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All Journal CHEMPUBLISH JOURNAL Jurnal Distilasi Jurnal Redoks Aptisi Transactions on Technopreneurship (ATT) AL-ULUM: JURNAL SAINS DAN TEKNOLOGI Kinetika Jurnal Penelitian Inovatif Joong-Ki
Idha Silviyati
Politeknik Negeri Sriwijaya
Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Public Health Social Sciences

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Journal : Kinetika

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THE EFFECT OF TIME FUMIGATION ADHESIVE PLYWOOD Silviyati, Idha
KINETIKA Vol 3, No 3 (2012): KINETIKA 01112012
Publisher : Teknik Kimia Politeknik Negeri Sriwijaya

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Abstract

Plywood panels are made with a single sheet of veneer glue or more on both sides of an intact core or wood veneer. Formaldehyde emissions from wood panel products such as plywood and particle board are glued with urea formaldehyde (UF) can be detrimental to health, especially if used in a room with limited ventilation. To reduce emissions of formaldehyde, the product can be fumigated with a chemical. Decrease in the concentration of Urea Formaldehyde emissions from plywood can be done by fumigation Ammonium Hydroxide. The longer the time fumigation is given, the greater the decline in value of the concentration of Urea Formaldehyde emissions. Value of Urea Formaldehyde Emissions on plywood that meets the standards of fumigation treatment is given 1 hour and 1.5 hours at different temperatures and pH. While fumigation at 0.5 hours Urea Formadehida gas emission values do not meet standards, this is due to the fumigation period is not too long. The less time the fumigation, the greater the value Formaldehidanya Urea gas emissions, due to free formaldehyde absorbed by the Ammonium Hydroxide is still small. Thus forming Heksametilentetraamine bit too, free formaldehyde concentration emitted plywood still high. the higher the temperature, the smaller the value of emissions. This is due to the high formaldehyde volatile as a result, so as to reduce the content of free formaldehyde in Urea Formaldehyde Glue. And the greater the pH of the process tends to the smaller emissions. This is due, at near neutral pH, free Formaldehyde more perfect reaction speed with Urea.
PENGARUH PENAMBAHAN HIGH DENSITY POLY ETHYLENE (HDPE) DAN OLI BEKAS SEBAGAI BINDER PADA BATA RINGAN DENGAN VARIASI FILLER Silviyati, Idha
KINETIKA Vol. 10 No. 3 (2019): KINETIKA 01112019
Publisher : Politeknik Negeri Sriwijaya

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Plastic is one of the polymer materials that is widely used in daily lives, one of them is High Density Poly Ethylene (HDPE) polymer which is the one type of the large contributors of plastic waste, and also believed to cause environmental and health problems. One of advanced material is lightweight brick which has become an innovation in building materials. Lightweight Hebel brick (celcon) is an infrastructure product that is widely used in this day. This study is entitled High Density Poly Ethylene (HDPE) Polymers as Binders in Lightweight Hebel Bricks (Celcon). Referring to the research master plan of the Sriwijaya State Polytechnic namely appropriate technological and industrial innovation and technology development of mining products. In this study utilizing High Density Poly Ethylene (HDPE) polymers as Binder and Portland Cement type I and silica Sand as Filler, in the process of making Lightweight Hebel Bricks (Celcon). The comparison of the Filler and Binder are 30:70, 40:60, 50:50, 60:40, 70:30 in %wt. Sample testing is done by testing the compressive strength, analyzing water absorption, density and SEM & EDX. The results showed that the compressive strength produced is included in quality I and quality III according to SNI 03-0349-1989 which in the variation of filler sample A has a compressive strength of 224.67 kg / cm2 and variation of filler sample B is 40, 45 kg / cm2 . The value of water absorption produced is also still below of the maximum limit, which is 25% which in the variation of sample A filler is 0.97% and the variation of filler sample B is 2.42%. The density values obtained are included in the medium density for filler variation of sample A, which is 900 kg / m3 and high density for variation of filler sample B, which is 1800 kg / m3 . By SEM-EDX analysis results showed that sample A has more porosity when compared to variations of sample B filler. In terms of economic analysis, the advantage of using plastic as material in making hebel bricks is the cost of making it economically due to the presence of plastic that is easily found.
SIMULASI PRODUKSI GAS SINTESA MELALUI PROSES BIOGAS STEAM REFORMING DENGAN KATALIS Ni/MgO-Al2O3 DAN Ni/La2O3-Al2O3 Firmansyah, Muhammad Rafli; Silviyati, Idha
KINETIKA Vol. 11 No. 2 (2020): KINETIKA 01072020
Publisher : Politeknik Negeri Sriwijaya

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Abstract

A renewable energy system to produce electricity from biogas feed by integrating the reforming process with an SOFC (Solid Oxide Fuel Cell) was evaluated through experimental and modeling study. The system performance was evaluated using the Aspen Plus process simulation tool and through biogas steam reforming experiments over 10 wt% Ni/MgO-Al2O3 and Ni/La2O3-Al2O3. Biogas steam reforming simulations were conducted for biogas feeds with CH4/CO2 ratios of 40/60, 50/50 and 60/40 at S/C ratios of 1.00–2.00 over a temperature range of 873–1123 K. The experimental data conclude that positive CO2 conversion was attained at temperatures higher than 1073 K. The results show that the proposed system can provide a viable approach to maximizing renewable methane resources for localized power generation
Co-Authors Amalda, Feby Nia Chairul Anwar Effendy A, Sahrul Elfrida Ratnawati Elvani, Lian Endang Supraptiah Firmansyah, Muhammad Rafli Gemala Cahaya Gemala Cahya Gunawan, Reno Ibnu Hajar Isnandar Yunanto Lety Trisnaliani Muhammad Iskandar Al Hakim Niati, Sri Murda Ningsih, Aisyah Suci Robert Junaidi Sonia Wimarsela sri Murda Niati Supraptiah, Endang