cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Muhamad Maulana Azimatun Nur
Contact Email
lanaazim@upnyk.ac.id
Phone
-
Journal Mail Official
editor.eksergi@gmail.com
Editorial Address
Prodi Teknik Kimia UPN Veteran Yogyakarta"</span>. Jl. SWK. 104 Lingkar Utara Condong Catur- Yogyakarta (55283)
Location
Kab. sleman,
Daerah istimewa yogyakarta
INDONESIA
Eksergi: Chemical Engineering Journal
Published by Universitas Pembangunan Nasional Veteran Yogyakarta
ISSN : 1410394X     EISSN : 24608203     DOI : https://doi.org/10.31315
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology
Eksergi is an open-access, peer-reviewed scientific journal that focuses on research and innovation in the fields of energy and renewable energy. The journal aims to provide a platform for scientists, researchers, engineers, and practitioners to share knowledge and advancements that contribute to sustainable development and energy transition. In addition to energy topics, the journal also accepts high-quality manuscripts related to, but not limited to, the following areas: Separation processes Bioprocesses related to food, energy, and environmental applications Wastewater treatment and resource recovery Process optimization and intensification Carbon capture, utilization, and storage (CCUS) Chemical reaction engineering and reactor design Life cycle assessment (LCA) and sustainability evaluation Process Design and Control Engineering Process Simulations Process System Engineering The journal welcomes original research articles, reviews, and short communications that demonstrate novelty, scientific rigor, and relevance to chemical engineering and interdisciplinary applications.
Arjuna Subject : Energi (semua kategori) - Energi Terbarukan, Keberlanjutan dan Lingkungan
Articles 10 Documents
 1 
Search results for , issue "Vol 18, No 2 (2021)" : 10 Documents clear
Pengaruh Penambahan Antioksidan Simplisia Kunyit Terhadap Angka Peroksida Minyak Kacang Tanah Yuniarti Dewi Rahmawati
Eksergi Vol 18, No 2 (2021)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v0i0.4565

Abstract

Peanut oil is a peanut product that is used for the food industry. The high content of fatty acids in the form of oleic acid causes peanut oil to break down easily, so it is necessary to add antioxidants to inhibit the oxidation process.The natural antioxidant used is turmeric. The purpose of this study was to determine the effect of the addition of turmeric antioxidants on the peroxide rate of peanut oil. The research method for calculating the peroxide number uses iodometric titration. The results showed that the greater the concentration of turmeric simplicia added to peanut oil, the greater the antioxidant activity. The greatest antioxidant activity was obtained from the weight of simplicia 0.4 g with a long immersion period of 7 days, which resulted in a peanut oil peroxide value of 14.5 ml N / gr.
Penggunaan Sekresi Kutu Lak pada Pembuatan Biokomposit dari Sabut Kelapa Hermawan, Axel Adam; Ariesta, Axl; Ilcham, Adi; Murni, Sri Wahyu
Eksergi Vol 18, No 2 (2021)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v0i0.4566

Abstract

Nowadays, biocomposite materials are required for particular needs. Coconut husk has a potential to be biocomposite using a resin produced by the laccifer lacca kerr (kerria lacca), an insect. This work was aimed to study the use of the lacca kerr resin to produce a biocomposite of coconut coir based. In the experimental, firstly, the cleaned coconut husks were chopped then mixed with lacca kerr resin and alcohol to make a composite dough. Then the dough were pressed with 130 psig at a 100oC within15 minutes. After that, the biocomposite was allowed to ambient temperature, then it properties were observed. To find the best product properties, the ratio of basic materials were varied. The ratio of coconut husk: lacca kerr resin was used ranged from 0.6 g/mL to 1.4 g/mL. The characterization of product properties were carried out based on ASTM D-638 and under guidance of the Indonesian National Standard (SNI) 03-2105-2006. Based on results, it was found that the best biocomposite observed had properties such as density of 0.45 g/cm3 , water content of 8.8% (maximum SNI requirement of 14%), degree of swelling of 67.6%, tensile strength of 43.4 kgf / cm2 (minimum SNI requirement of 3, 1 kgf / cm2 ), Young's modulus of 1219.2 kgf/cm2 , elongation of 67.7%, conductivity of 1.8 10-8 /.m. Some of these characteristics have met the Indonesian national standard (SNI).
Influence of solvents to Distillation Extraction in Separating of Methanol- Acetone Mixture using Separating Wall Reynardi Risyad Raytama; Herry Santoso; Yansen Hartanto
Eksergi Vol 18, No 2 (2021)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v0i0.4563

Abstract

Methylene blue is one of dying waste that causes harmful effect both enviromental and public health risks. A method to overcome the problem is to adsorb it with the activated carbon. Apart from that, corn cob is potential biomass with can convert to activated carbon. The aim of this research is to syntethic and to modify corn cob activated carbon with iron oxide. It is expected to increase the afinity of methylene blue to the activated carbon surface. The modification is done by wet impregnation and the effectiveness of the impregnated corn cob activated carbon is studied by analyse the persen removal of methylene blue in every interval time. The result show that in the concentration range of Fe load impregnation between 1%-3% which has been used, the corn cob activated carbon with concentration of Fe load 2% has the most optimum ability in methylene blue adsorption with the adsorption capacity 44,9%. Moreover, the effect pH shows that in acidic condition the adsorption of methylen blue is better than in netral condition
Uji Aktivitas Karbon Aktif Tongkol Jagung Terimpregnasi Fe2O3 sebagai Biosorben Limbah Warna Metilen Blue Fauzan Irfandy; Yuli Ristianingsih; Alit Istiani
Eksergi Vol 18, No 2 (2021)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v0i0.4536

Abstract

Methylene blue is one of dying waste that causes harmful effect both enviromental and public health risks. A method to overcome the problem is to adsorb it with the activated carbon. Apart from that, corn cob is potential biomass with can convert to activated carbon. The aim of this research is to syntethic and to modify corn cob activated carbon with iron oxide. It is expected to increase the afinity of methylene blue to the activated carbon surface. The modification is done by wet impregnation and the effectiveness of the impregnated corn cob activated carbon is studied by analyse the persen removal of methylene blue in every interval time. The result show that in the concentration range of Fe load impregnation between 1%-3% which has been used, the corn cob activated carbon with concentration of Fe load 2% has the most optimum ability in methylene blue adsorption with the adsorption capacity 44,9%. Moreover, the effect pH shows that in acidic condition the adsorption of methylen blue is better than in netral condition
Kinetic Study on Coagulation Process with Poly Aluminium Chloride and Alum Coagulants in Treating The Liquid Waste of Tempeh Industry Iqbal Syaichurrozi
Eksergi Vol 18, No 2 (2021)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v0i0.5362

Abstract

Several factors that influence the coagulation process in reducing chemical oxygen demand (COD) in wastewater are processing time, coagulant dose and type of coagulant. The effect of these three factors on the reduction of COD in tempeh industrial wastewater during the coagulation process has been investigated by Hidayah (2018). However, kinetic studies in depth have not been done by Hidayah (2018). Therefore, the aim of this study was to develop a new kinetic model that can predict the performance of the coagulation process. It is hoped that the kinetic model can be used in a wider range of operating conditions. In this study, the pseudo first order and pseudo second order kinetic models were tested to get the best model. Based on simulation results, both models produced almost the same accuracy. For reason of simplification, the pseudo first order model was chosen as the basic model in this study. Furthermore, modifications were made to the pseudo first order model so that the effect of processing time, coagulant dose and type of coagulant appeared in the model. This kinetic model was successfully tested to predict the coagulation performance of study of Hidayah (2018) with an average Mean Absolute Percentage Error (MAPE) of 10.8%.
Modifikasi Zeolit Alam Menjadi ZSM-5 Sebagai Penjerap CO2 Gregorius Prima Indra Budianto
Eksergi Vol 18, No 2 (2021)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v18i2.4725

Abstract

Biogas is a product of the bio-decomposition process in anaerobic conditions. Methane (CH4) and carbon dioxide (CO2) are the compounds of biogas that act in determining the quality of biogas. When the CH4 level is high, the biogas will have a high caloric value; conversely, the increased CO2 levels result in low biogas heating value. One effort to purify biogas is the adsorption process using natural zeolite. Natural zeolite should be modified into ZSM-5 because it has a greater pore diameter than natural zeolite. It is expected that the increase of the efficiency of CO2 adsorption is more significant than natural zeolite. ZSM-5, which is altered from natural zeolite, will be compared to the effectiveness of CO2 adsorption compared to natural zeolite
PENGARUH JENIS ASAM DAN SUHU EKSTRAKSI TERHADAP KARAKTERISTIK PEKTIN DARI KULIT PISANG KEPOK yuli ristianingsih; Indriana Lestari; Wibiana Wulan Nandari
Eksergi Vol 18, No 2 (2021)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v18i2.5400

Abstract

Pectin is structurally and functionally the most complex polysaccharide in plant cell walls. Pectin is widely used as an adhesive and emulsifier in the food, pharmaceutical industry and also as an adsorbent in waste water treatment. This research used banana peels as a raw material. The purpose of this study was to study the effect of temperature and solvent (acetic acid and hydrochloric acid) on the characteristics of pectin (ash content, methoxyl and galacturonic content). This research was carried out in a stirred tank reactor for 90 minutes with various types of solvents (hydrochloric acid and acetic acid) and extraction temperatures (60, 70, 80 and 90) 0C. Based on the research, it was found that the optimum pectin yield with 0.25 N HCl at a temperature of 800C was 24.93%. The characteristics of pectin which include galacturonic acid, methoxyl content, ash content and equivalent weight at an extraction temperature of 800C with a concentration of 0.25 N HCl were 79,56%; 2.65; 6,72% and 3846
Pembuatan dan Karakterisasi Biodegradable plastic Berbasis Campuran Pati dan Selulosa Dari Limbah Jagung Ari Susanti; Heri Septya Kusuma; D.K. Zafira; A.B. Ilmi; I.E. Agustina; L Baqih; Arie Prayoga
Eksergi Vol 18, No 2 (2021)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v18i2.5341

Abstract

Foodstuffs need proper packaging to prevent spoilage. The use of conventional plastics for packaging has caused environmental problems. It is necessary to develop environmentally friendly packaging as biodegradable plastic. The purpose of this study was to isolate cellulose from corn cobs with three different procedures to determine the best procedure for producing cellulose, as evidenced by the color and results of FTIR analysis. The best cellulose yields are used to make biodegradable plastic films combined with starch and a glycerol plasticizer, sodium montmorillonite nanoclay filler, and clove leaf essential oil. The film that has been made is continued with characterization in the form of analysis of degradation ability, analysis of volatility mass fraction (%), analysis of swelling degree (%), and water solubility (%). The results of this study found that the best cellulose isolation was produced by a procedure 2. The results of the analysis of the degradation ability of the film showed that it was under SNI 7188.7: 2016 with the fastest degradation results within four days with the addition of SMMT. The results of the VMF (%) analysis showed that the presence of EO and SMMT in the composition causes the VMF (%) value to be below. The results of the SD (%) analysis show that the presence of SMMT causes the SD (%) value to increase while the addition of EO causes the SD (%) value to decrease. The results of the WS (%) analysis showed that the presence of SMMT causes the WS (%) to increase, while the addition of EO to the composition variation causes the WS (%) to decrease
Potensi Spirulina platensis sebagai sumber kosmetik dan bioplastik (review) Muhamad Maulana Azimatun Nur; Tutik Muji Setyoningrum; Halim Nur Aziz Suwardi; Bety Alfitamara; Adi Kurniawan; Vinka Azzah Prananda; Dwi Nur Afni; Sheila Alodia; Retno Pamularsih
Eksergi Vol 18, No 2 (2021)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v18i2.5660

Abstract

Spirulina plantesis is a cyanobacteria that has many purposes such as for cosmetics, and food industry. In addition, Spirulina platensis can accumulate polyhydroxybutyrate (PHB), a type of bioplastic. This review discussed the potency of Spirulina platensis as a source of bioplastics and cosmetics. From the review, Spirulina contained bioactive compound, C-phycocyanin, which can inhibit cell damage and is very potential to be applied for cosmetics. The PHB content in Spirulina tends to be small compared to other microalgae. To reduce the cost of PHB from Spirulina, the biorefinery concept can be applied, by recovery the bioactive components (C-phycocyanin), while the residue can be used as a source of PHB.
PENGARUH PERTAMBANGAN PASIR TERHADAP EROSI DAN SEDIMENTASI SUNGAI (STUDI KASUS DI DESA TANJUNG ALAM KECAMATAN SEI DADAP KABUPATEN ASAHAN) Muslich Muchlish; I.A. Faisyal; Sri Sunarsih
Eksergi Vol 18, No 2 (2021)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v18i2.5290

Abstract

Sand mining in Tanjung Alam Village, Sei Dadap District, Asahan Regency, which is carried out with a suction machine is thought to have a negative impact on the environment. This study aims to examine the effect of sand mining on erosion and sedimentation in that river. The analysis steps begins with measuring the river profile, measuring flow velocity, measuring river discharge, measuring sediment concentration, measuring rainfall, measuring slope and calculating the estimated rate of erosion. To calculate the estimated erosion rate in this study using the USLE method and to calculate the sediment load using SNI 3414: 2008 with the depth-integrating technique. Based on the calculation results, it is known that sand mining activity causes narrowing of the river profile, accelerates river flow, increases river discharge so that it increases the rate of erosion, and sedimentation. The highest sediment load value is at point 5 which is located downstream of mining 1 and 2 with a value of 2922.48 tons/day. While the highest estimated erosion rate is at point 5 with a value of 125.9 tons/ha/year which is included in the heavy category. Measurements at each sampling point prove that sand mining activities have a high impact on increasing the rate of erosion and sedimentation in rivers.

Page 1 of 1 | Total Record : 10

 1 

Filter by Year

2021 2021


Reset
Filter By Issues
All Issue Vol 22 No 3 (2025) Vol 22 No 2 (2025) Vol 22 No 1 (2025) Vol 23 No 1 Vol 21, No 3 (2024) Vol 21 No 3 (2024) Vol 21 No 2 (2024) Vol 21, No 2 (2024) Vol 21 No 1 (2024) Vol 21, No 1 (2024) Vol 20, No 3 (2023) Vol 20 No 3 (2023) Vol 20, No 2 (2023) Vol 20, No 1 (2023) Vol 19, No 3 (2022) Vol 19, No 2 (2022) Vol 19, No 1 (2022) Vol 9, No 1 (2008): Terbitan lama Vol 18, No 1 (2021): Vol 18, No. 1 (2021) Vol 18 No 2 (2021) Vol 18, No 2 (2021) Vol 18, No 1 (2021) Vol 17, No 2 (2020): Volume 17 No 2 (2020) Vol 17, No 2 (2020) Vol 17, No 1 (2020) Vol 16, No 1 (2019): Vol.16 No.1 (2019) Vol 16, No 2 (2019) Vol 16, No 1 (2019) Vol 15, No 2 (2018): Vol. 15 No.2 (2018) Vol 15, No 1 (2018): Vol 15, No 1 (2018) Vol 14, No 2 (2017): Eksergi Volume 14 No 2 2017 Vol 14, No 1 (2017): Eksergi Volume 14 No 1 2017 Vol 13, No 2 (2016) Vol 13, No 1 (2016) Vol 12, No 2 (2015) Vol 12, No 1 (2015) Vol 10, No 2 (2010): Terbitan Lama Vol 10, No 2 (2010): Versi Cetak Vol 10, No 1 (2010): Versi Cetak Vol 9, No 1 (2009): Versi Cetak Vol 9, No 1 (2008): Versi Cetak Vol 11, No 2 Vol 11, No 1 More Issue