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All Journal Indonesian Physical Review International Journal of Hydrological and Environmental for Sustainability Online Learning in Educational Research
Ardimas, Ardimas
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Environmental Science Physics

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Utilization of Industrial Flour Waste as Biobriquette Adhesive: Application on Pyrolysis Biobriquette Sawdust Red Teak Wood Wahyuni, Harini; Aladin, Andi; Kalla, Ruslan; Nouman, Muhammad; Ardimas, Ardimas; Chowdhury, MD. Shahariar
International Journal of Hydrological and Environmental for Sustainability Vol. 1 No. 2 (2022): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1021.317 KB) | DOI: 10.58524/ijhes.v1i2.74

Abstract

Biobriquette is one of the alternative fuels derived from biomass. The biomass used in this research is red teakwood charcoal. This research purposes to utilize red teakwood charcoal as alternative fuels and then to knows best characters compressive strength, ignition power and caloric value according to Indonesian quality standards (SNI 01-6235-2000). Characteristics of biobriquettes are known by test ash content, moisture content, volatile matter, fix carbon, compressive strength, ignition power and caloric value. The materials used are red teakwood plus industrial flour waste. The process of making biobriquette begins with drying the material, pyrolysis during 150 minutes at a temperature of 400 oC, sieved with 40 mesh. The briquetting was using a cube-shaped mold with manual pressure which was then dried in an oven to a constant weight and tested its characteristics by the ASTM (American standard Testing and material) method. The results showed that the added adhesive was very take effect in producing the best briquettes. The characteristics of briquettes with the best optimum adhesive composition produce is adhesive 5% charcoal 95% produce ash content 5.49% , moisture content 4.26 %, volatile matter 26.89 %, fix carbon 63.12%, compressive strength 3.64 kgf/cm2, caloric value 7038 kcal/kg, and ignition power 0.03 gram/minute categorized as passing the specifications for the quality requirements briquettes of SNI 01-6235-2000.
Dynamic Electrical Subject for Senior High School: Developing Interactive Tutorial Method Animation Ardimas, Ardimas; Basith, Abd; Priyasmika, Rendy; Annovasho, Jhelang; Risdianto, Norma Sidik
Online Learning In Educational Research (OLER) Vol 1, No 2 (2021): Online Learning in Educational Research
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1043.633 KB) | DOI: 10.58524/oler.v1i2.72

Abstract

In recent years the need for digital technology in various fields is in great demand, including in education fields. This is due to digital technology which makes it easier for students to understand the material and increase learning interest. To increase students' understanding and interest in learning about dynamic electrical material, the Interactive Tutorial Method Animation (ITMA) was developed using Adobe Flash Professional CS6. This research was conducted at the SMA (Senior High School) Laboratory at Islamic University Sunan Kalijaga, Yogyakarta. This model refers to the elaboration research procedure by Borg and Gall. Data were collected using a questionnaire instrument which contained: validation, response, and assessment sheets. Qualitative assessment data from 7 experts on ITMA quality were used as a reference for initial product revisions. Then the qualitative data of student responses were determined using the Guttman statement scale. Ideal percentage and agreement were used to analyze the data of preliminary and main fields, respectively. The results of the experts' evaluation showed very good results, each of which was 92.8% for the material aspect, 91.6% for the media aspect, and 95.2% for the learning aspect. The final product of ITMA received a good response from students with a 96% approval rate. Therefore, it is suggested that the development of ITMA has increased students interest in dynamic electricity subject.
SINTESIS KOMPOSIT NANO PANI/Fe3O4 KONDUKTIF BERBASIS PASIR ALAM Hamid, Abd Basith; Sholichah, Nikmatin; Rahayu, Vira; Ardimas, Ardimas; Fadhli, Ulfa Mahfudli
Indonesian Physical Review Vol. 4 No. 2 (2021)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v4i2.94

Abstract

Polyaniline is a polymer material that has unique physical and even chemical properties, especially in its electrical properties. PANi synthesis can be carried out by chemical and electrochemical oxide reaction methods. The purposes of this study are to synthesize PANi and PANi / Fe3O4 composites by chemical oxide reactions and measure their conductivity. This research begins with the synthesis of iron oxide (Fe3O4) from natural iron sand and then followed by the synthesis of PANi / Fe3O4 composites using copreticipitation method. The Fe3O4 crystal phase was determined by using XRD, while the vibrational mode and morphology of the PANi / Fe3O4 nanocomposite was observed using FTIR and SEM. The conductivity properties were measured using a LCR meter. Furthermore, the conductivity properties were measured using a LCR meter and the result reveals a greater conductivity value as increasing the concentration of Fe3O4, the highest conductivity value of 3.1 mS/cm is known by the sample with an iron oxide concentration of 1 %. While the samples with a concentration of 0.5 % of iron oxide has conductivity values  of 2.8 mS/cm and pure PANi of 2.1 mS/cm. Due to its properties such  to inert to the environment and having conductive properties, the obtained PANI / Fe3O4 composite can be employed as a super capacitor electrode.
Co-Authors Abd Basith, Abd Andi Aladin Chowdhury, MD. Shahariar Fadhli, Ulfa Mahfudli Hamid, Abd Basith JHELANG ANNOVASHO Norma Sidik Risdianto Nouman, Muhammad Priyasmika, Rendy Rahayu, Vira Ruslan Kalla, Ruslan Sholichah, Nikmatin Wahyuni, Harini