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All Journal TELKOMNIKA (Telecommunication Computing Electronics and Control) Eksergi: Chemical Engineering Journal JISI UMJ (Jurnal Integrasi Sistem Industri UMJ) Journal of Engineering and Technological Sciences JURNAL NASIONAL TEKNIK ELEKTRO R.E.M (Rekyasa Energi Manufaktur) Jurnal Indonesian Journal of Chemistry REACTOR : Journal of Research On Chemistry And Engineering Journal of Applied Agricultural Science and Technology Journal of Industrial Community Empowerment JURNAL REKAYASA KIMIA & LINGKUNGAN
Reni Desmiarti
Bung Hatta University
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Journal : Journal of Applied Agricultural Science and Technology

 1 
The Effect of Calcination Temperature on The Quality of Quicklime from Different Limestone Mines in West Sumatera, Indonesia Reni Desmiarti; Ellyta Sari; Firdaus Firdaus; Erda Desfitri; Amelia Amir; Inva Salsabil; Maulana Rosadi; Nofri Naldi
Journal of Applied Agricultural Science and Technology Vol. 6 No. 1 (2022): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (607.367 KB) | DOI: 10.55043/jaast.v6i1.44

Abstract

Quicklime is a widely used industrial chemical and its characteristics may be affected by the limestone characteristics and calcination temperature. The present study investigated the quicklime characteristics obtained from limestone after calcination at different temperatures (800, 900, and 1000 ℃) from six geological-different mines in West Sumatera, Indonesia. X-ray fluorescence (XRF) analysis was performed to characterize the elemental compositions in limestone and quicklime. The stoichiometric evaluation was examined to compare the obtained carbon dioxide (CO2) from experimental and theoretical results during calcination. Based on elemental composition from XRF analysis, all the investigated limestones are very pure limestones, with impurities of less than 1%. The level of calcium oxide (CaO) after calcination at 1000℃ increased to more than 90% for all investigated limestone. The obtained CaO and CO2 mass after calcination at 1000℃ for 5 h were more than 70 and 60 grams, respectively. However, the experimental results on CaO and CO2 mass were 5–12% less than theoretical mass, reflecting the partial decomposition of calcium carbonate during the calcination process.
Production of Cocoa Pulp Syrup by Utilizing Local Sugar Sources Firdaus Firdaus; Reni Desmiarti; Erti Praputri; Amelia Amir
Journal of Applied Agricultural Science and Technology Vol. 6 No. 2 (2022): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (463.64 KB) | DOI: 10.55043/jaast.v6i2.70

Abstract

The pulp of the cocoa fruit still has not economically viable yet. Its potency to be processed into fruit syrup is expected to increase its value added. Local sugar from palm and canes is still traditionally utilized to produce brown sugar. This study aimed to make fruit syrup by utilizing cocoa pulp and local sugar sources in West Sumatra with several variants (palm sugar, sugarcane, and market white sugar). The effects of sugar concentration on the quality of the syrup were also studied. Sensory evaluation by the hedonic method was performed and statistical analysis data were carried out using SPSS. Microbiological analysis and shelf-life testing also have been done. The results of this study showed that respondents preferred syrup with palm sugar to sugarcane because of its light brown color and distinctive sweetness. The microbiological test reported that the syrup could only be consumed for less than the 5th day in a sealed glass bottle if it was placed at room temperature. Meanwhile, the syrup placed in the refrigerator (5 0C) could keep until the 5th day
Optimization of Gambier Industry Wastewater Treatment Plant (WWTP) Performance: a Systematic Approach for Environmental Sustainability Desfitri, Erda Rahmilaila; Desmiarti, Reni; Permata, Adinda Ratu; Elizarni, Elizarni
Journal of Applied Agricultural Science and Technology Vol. 8 No. 2 (2024): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v8i2.253

Abstract

The gambier industry in West Sumatra, particularly in Payakumbuh, is Indonesia's largest producer of gambier, contributing approximately 80-90% of the national production. This high production rate results in increased waste generated during the production process. This article discusses the potential environmental pollution from wastewater from the gambier industry and efforts to address this issue. The study notes that coagulation-flocculation and adsorption methods have efficiently treated textile industry wastewater. The study discusses the Wastewater Treatment Plant (WWTP) conditions in the gambier processing industry before optimization and the steps taken to improve its performance. Additionally, the study analyzes wastewater characteristics before and after treatment. The results of this study indicate that adding aerators and pH-adjusting agents to the WWTP can improve wastewater treatment performance, resulting in effluent that meets the quality standards set by government regulations. Moreover, treating wastewater with adding Poly Aluminium Chloride (PAC) reduces COD and BOD, indicating the degradation of organic components in gambier waste. COD removal efficiency is 92.65%, and BOD removal efficiency is 58.01%. This optimization results in an improved quality of gambier industry wastewater, reducing its negative environmental impact. These efforts are crucial to meet environmental regulatory standards established by the Indonesian government.
Co-Authors . Darwison Amelia Amanda Amelia Amir Ansyah, Zulfebri Ariadi Hazmi Arifanda, Aditya Yoga Ayu Bidiawati JR Desfitri, Erda Rahmilaila Edwardo Edwardo Eka Putra Waldi Elizarni Elizarni, Elizarni Ellyta Sari Ellyta Sari Erda Desfitri Erda Rahmilaila Desfitri Erti Praputri Firdaus Firdaus Fu-Sheng Li Fu-Sheng Li Fusheng Li Fusheng Li Fusheng Li Fusheng Li Gui, Hongjie Hapsauqi, Iqbal Hongjie Gui Inva Salsabil Lestari Setiawati Li, Fusheng Li, Fusheng mardian Matlal Fajri Alif Maulana Rosadi Muhammad Imran Hamid Mustikaningtias, Endah Naldi, Nofri Nofri Naldi Nora Idiawati Paysmi, Paysmi Permata, Adinda Ratu Primas Emeraldi Putra, Ikhsan Syafano Raihan, Mohammad Ramayani, Devi Rambe, Rodo Padena Rizaldi, Fajri Akbar Rosadi, Maulana Yusup Sandy Yuda Verdana Suherman, Hendra Susanti, Riju Syukri Arief Tanjung, Diva Amanda Toshiro Yamada Wahyuni, Alfia Wei, Yongfen Yamada, Toshiro Yesmizarti Muchtiar Yongfen Wei Yulastri . Yulianti, Amro Zulhadjri Zulhadjri