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All Journal International Journal of Social Service and Research Makara Journal of Technology Aceh International Journal of Science and Technology PESARE: Science and Engineering Service Journal JURNAL REKAYASA KIMIA & LINGKUNGAN
Asri Gani
Department of Chemical Engineering, Faculty of Engineering, University of Syiah Kuala, Banda Aceh 23111, Indonesia
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences

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Physical Characterization and Desulfurization of Biobriquette Using Calcium-Based Adsorbent Mahidin, Mahidin; Gani, Asri; Khairil, Khairil
Makara Journal of Technology Vol. 15, No. 2
Publisher : UI Scholars Hub

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Abstract

Combustion of coal and co-combustion of their co-fuel contribute to gas emissions. Among the gas emissions are SOx, NOx, CO and CO2. Introduction of calcium based adsorbent is addressed to absorb SO2 that release to the atmosphere during the combustion process. Objective of the research is at first to observe the physical characteristics of biobriquettes as a function of briquette compositions (coal to palm kernel shell ratios) and Ca/S ratios (Ca in adsorbent and S in briquette) using a natural adsorbent (shellfish waste). The second objective is to investigate desulfurization characteristics as a function of Ca/S ratios and desulfurization temperatures at coal to palm kernel shell ratio of 90:10 (wt %). Ratios of coal to palm kernel shell in this study are 90:10, 80:20, 70:30, 60:40 and 50:50; and Ca/S ratios are 1:1, 1.25:1, 1.5:1, 1.75:1 and 2:1. Binding agent used is the mixture of Jatropha curcas seeds and starch as much as 10% (wt). It was found that introducing the palm kernel shell and adsorbents in the coal briquette affect the water resistant and compressive strength. The highest water resistance and compressive strength were 5,165 second and 34 kg/cm2, respectively. The lowest SO2 level found in this study was 1 ppm for all Ca/S ratios, except for 1:1.
Use of Green Mussel Shell as a Desulfurizer in the Blending of Low Rank Coal-Biomass Briquette Combustion Mahidin, Mahidin; Gani, Asri; Hani, M. Reza; Syukur, Muhammad; Hamdani, Hamdani; Khairil, Khairil; Rizal, Samsul; Hadi, Abdul; Mahlia, T.M.I.
Makara Journal of Technology Vol. 20, No. 2
Publisher : UI Scholars Hub

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Abstract

Calcium oxide-based material is available abundantly and naturally. A potential resource of that material comes from marine mollusk shell such as clams, scallops, mussels, oysters, winkles and nerites. The CaO-based material has exhibited a good performance as the desulfurizer or adsorbent in coal combustion in order to reduce SO2 emission. In this study, pulverized green mussel shell, without calcination, was utilized as the desulfurizer in the briquette produced from a mixture of low rank coal and palm kernel shell (PKS), also known as bio-briquette. The ratio of coal to PKS in the briquette was 90:10 (wt/wt). The influence of green mussel shell contents and combustion temperature were examined to prove the possible use of that material as a desulfurizer. The ratio of Ca to S (Ca = calcium content in desulfurizer; S = sulfur content in briquette) were fixed at 1:1, 1.25:1, 1.5:1, 1.75:1, and 2:1 (mole/mole). The burning (or desulfurization) temperature range was 300-500 °C; the reaction time was 720 seconds and the air flow rate was 1.2 L/min. The results showed that green mussel shell can be introduced as a desulfurizer in coal briquette or bio-briquette combustions. The desulfurization process using that desulfurizer exhibited the first order reaction and the highest average efficiency of 84.5%.
Public Perception Of Noise (Case Study: Malikussaleh University Aksi Adb Project Adella, Faradya; Gani, Asri; Deli, Anwar
International Journal of Social Service and Research Vol. 4 No. 05 (2024): International Journal of Social Service and Research (IJSSR)
Publisher : Ridwan Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46799/ijssr.v4i05.837

Abstract

Malikussaleh University (Unimal) is one of the four universities selected to get a loan from the Asian Development Bank (ADB) related to the Advanced Knowledge and Skills for Sustainable Growth in Indonesia (AKSI) project. In the construction process, such as installation activities and building infrastructure from equipment, it can trigger unexpected noise, so it can have an impact on people's health and comfort. This research was conducted in five new building construction locations on the Bukit Indah campus of Malikussaleh University. The purpose of this study is to see the perception and attitude of the community around the construction project activities. The research method used was the distribution of questionnaires and using the Likert scale to measure the attitudes, opinions, and perceptions of the research respondents. The results of the questionnaire will be processed using SPSS software. The results showed that the overall average value of the respondents' perception of noise was 2.35. This figure shows that the current place of work/study/living does not feel noisy due to ongoing construction work.
Analysis Of Physical And Chemical Impact On The Krueng Montala River, Aceh Besar Regency: Sand And Stone Mining Activity Effect Muhibbuddin, Muhibbuddin; Gani, Asri; Aulia, M Prayogie; Arahman*, Nasrul
Aceh International Journal of Science and Technology Vol 12, No 2 (2023): August 2023
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.12.2.31526

Abstract

Rivers are important for human survival providing raw water for the community's clean water needs. Rivers also provide sand, gravel, and rocks commonly used for construction. However, improper exploitation of the river without considering environmental sustainability may cause future damage to it. The damage is usually caused by mining activities violating environmental regulations. The main point of this study is to evaluate the changes in the riverbank and riverbed of Krueng Montala River, Aceh, Indonesia, due to the mining activity around that place. The method used to analyze the changes was measuring the river's topographical contours at the end of mining activities and comparing the results with the initial licensing data based on the Mining License Number 540/DPMPTSP/414/IUP-OP/2020. Some of the equipment used in evaluating the condition of the river includes a Nikon Total Station, standard measuring tanks, Garmin 62Csx, and GPS. The measured data was also compared to the Technical Recommendation Number SA.02.03/BWS1/1542 from the River Basin Office of Sumatera 1. Based on the technical recommendation, the sufficient excavation volume is 10,201.44 m3 . The field data for lost and excavated materials at the research location was 40,861.4 m3 , and the total riverbank material loss at the study location was 7,566.33 m3 . The impact of mining activities on chemical parameters in the Krueng Montala River is still within the standard limits permitted by the government, such as TDS, TSS, COD, and BOD parameters. The influence of mining activities on chemical parameters in the Krueng Montala River did not show results that exceeded the standard limits permitted by the government, such as TDS, TSS, COD, and BOD parameters.
Physical Characteristics of Briquettes Made of Oil Palm Empty Fruit Bunches (EFB) Using Brown Algae Adhesive Dewita, Ana; Faisal, M.; Gani, Asri
Jurnal Rekayasa Kimia & Lingkungan Vol 15, No 1 (2020): Jurnal Rekayasa Kimia & Lingkungan (June, 2020)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v15i1.15429

Abstract

The charcoal produced from oil palm empty fruit bunches pyrolysis can be utilised as environmentally friendly alternative fuel briquettes. This research studied the physical characteristics of EFB briquettes using brown algae as an adhesive. The effect of the concentration of brown algae adhesive on briquette quality was investigated. The briquettes were prepared from EFB charcoal by adding adhesive at various concentrations of 2.5%, 5%, 7.5% and 10% (w/w). Subsequently, proximate analysis was performed on EFB and brown algae. The best-quality briquettes were obtained by adding brown algae adhesive at 2.5% concentrate, which resulted in a calorific value of 21,405 J/g. Other characteristics, such as moisture content, ash content, volatile matter and fixed carbon, were found to be 7.4%, 4.9%, 79% and 8.7%, respectively. Thermal characteristics, such as density, flash point and burning time, were found at 0.96 g/cm3, 5.1 seconds and 300 minutes, respectively.
Pengaruh Penambahan Kaolin Terhadap Reduksi Logam Pb pada Proses Pembakaran Batubara Is, Isdawani; Gani, Asri
Jurnal Rekayasa Kimia & Lingkungan Vol 10, No 3 (2015): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v10i3.3064

Abstract

Adsorpsi emisi pembakaran briket batubara dengan menggunakan adsorben kaolin telah dilakukan. Penelitian ini bertujuan untuk melihat pengaruh rasio adsorben terhadap performa penyerapan SO2 dan logam berat plumbum (Pb). Kaolin dicampur dalam briket batubara dengan variasi massa 2, 4, 6, 8, dan 10%. Briket dibakar pada electrically stainless steel reaction tube pada kondisi temperatur pembakaran yaitu 600, 700, dan 800oC. Analisis kadar pb dilakukan dengan menggunakan atomic absorbtion spectroscopy (AAS) Perkin Elmer. Konsentrasi emisi SO2 dalam gas buang dianalisis menggunakan industrial gas combustion and emission analyzer (E4400i). Hasil percobaan dan analisis menunjukkan, bahwa tingginya rasio adsorben dapat menurunkan trend emisi SO2 yang dihasilkan. Pada emisi logam tingkat kejenuhan penyerapan oleh kaolin berada pada rasio adsorben 6%-10%. Kapasitas adsorpsi yang dihasilkan cenderung tinggi pada suhu pembakaran 600oC.
Modeling and Simulation on NOx and N2O Formation in Co-combustion of Low-rank Coal and Palm Kernel Shell Mahidin, Mahidin; Gani, Asri; Khairil, Khairil
Jurnal Rekayasa Kimia & Lingkungan Vol 9, No 2 (2012): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

NOx and N2O emissions from coal combustion are claimed as the major contributors for the acid rain, photochemical smog, green house and ozone depletion problems. Based on the facts, study on those emissions formation is interest topic in the combustion area. In this paper, theoretical study by modeling and simulation on NOx and N2O formation in co-combustion of low-rank coal and palm kernel shell has been done. Combustion model was developed by using the principle of chemical-reaction equilibrium. Simulation on the model in order to evaluate the composition of the flue gas was performed by minimization the Gibbs free energy. The results showed that by introduced of biomass in coal combustion can reduce the NOx concentration in considerably level. Maximum NO level in co-combustion of low-rank coal and palm kernel shell with fuel composition 1:1 is 2,350 ppm, low enough compared to single low-rank coal combustion up to 3,150 ppm. Moreover, N2O is less than 0.25 ppm in all cases.Keywords: low-rank coal, N2O emission, NOx emission, palm kernel shell
Advokasi Kesiapsiagaan Bencana Gunung Api Berbasis Budaya dan Teknologi: Cerita Gunung Seulawah dan Gunung Fuji pada Festival Bunkasai USK 2025 Agustina, Sylvia; Yusuf, Myna Agustina; Gani, Asri; Ardiansyah, Ardiansyah; Rusdi, Muhammad; Sofyan, Sofyan; Fakhrana, Siti Zahrina
PESARE: Jurnal Pengabdian Sains dan Rekayasa Vol 3, No 3 (2025): Oktober 2025
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/pesare.v3i3.49720

Abstract

This community service project focuses on disaster advocacy in Aceh, Indonesia, by drawing lessons from Japans experience with Mount Fuji. The subject of dedication is the local community and university students in Banda Aceh, particularly those with limited knowledge and preparedness regarding the volcanic hazards of Mount Seulawah. The aim of this program is to raise disaster literacy, strengthen awareness, and encourage proactive preparedness through an innovative advocacy model that combines technology and cultural approaches. The methodology of this program involved several stages: information gathering and literature review about Mount Seulawah and Mount Fuji; team discussions and planning to design advocacy content; interactive media displays such as VR application MSeulawah, 360-degree videos, banners, brochures, and cultural arts; and public advocacy conducted during the Bunkasai Festival at Syiah Kuala University. Tactics included the use of cardboard VR for immersive experiences, video screenings, interactive games to test disaster knowledge, and cultural elements such as Japanese art and traditional games to increase community engagement. The outcomes demonstrate that the integration of technology and cultural strategies was effective in attracting participation, especially among students. Visitors reported an increase in knowledge and awareness of volcanic risks, while the interactive media successfully enhanced retention and engagement. This initiative highlights the potential of hybrid advocacy models to strengthen community resilience and suggests the establishment of a Seulawah Museum as a long-term educational platform.
Co-Authors Abdul Hadi Adella, Faradya AGUSTINA, SYLVIA Arahman*, Nasrul Ardiansyah . Aulia, M Prayogie Deli, Anwar Dewita, Ana Fakhrana, Siti Zahrina Hamdani Hamdani Hani, M. Reza Isdawani Is, Isdawani Ketut Tirtayasa Khairil Khairil M. Faisal Mahidin Mahidin Muhammad Rusdi Muhammad Syukur Muhibbuddin Muhibbuddin Myna Agustina Yusuf Sofyan Sofyan T.M.I. Mahlia