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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 2 Documents
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Search results for , issue "Vol 12, No 2 (2015)" : 2 Documents clear
Co-Digestion of Vinasse Waste and Tofu Liquid Waste to Increase Biogas Production Iqbal Syaichurrozi
Eksergi Vol 12, No 2 (2015)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v12i2.1357

Abstract

The purpose of this study was to increase biogas production using co-digestion concept. Vinasse Waste (VW) containing high COD and low total Nitrogen content was mixtured with Tofu Liquid Waste (TLW) containing low COD and high total Nitrogen. Substrates were varied with volume ratio of VW:TLW of 100:0, 20:80, 0:100. Total volume of substrates was 250 mL. Anaerobic digesters were operated at room temperatur. After fermentation, biogas total volume of variables of 100:0, 20:80, 0:100 was 88.5; 125.5; 41.5 mL. Initial pH for all variables was 7.0. At the end of fermentation, pH substrates became 3.9; 5.1; 6.8 for variables of 100:0, 20:80, 0:100 respectively.
Biosurfaktan Reningtyas, Renung; Mahreni, M
Eksergi Vol 12, No 2 (2015)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v12i2.1354

Abstract

Surfactant is an amphipilic chemical structure which contains the hydrophobic and hydrophilic groups. Surfactant has ability to lower surface tension between two liquids. Surfactant has been used in many industries, such as cosmetics, food, textile, petroleum, and pharmacy industry. Nowdays, most of surfactant used in industries are still based on petroleum resources. The applicationsof this nonbiodegradable surfactant in industry promote environmental problem. Biosurfactant is a biodegradable surfactant that produced from microorganism or natural resources. Biosurfactant produced from microorganism contains Rhamnolipid and Lipopeptide. Surfactin and Dactomicin made from microorganism with antibacterial activity are the examples. Bottle necks of the production of biosurfactant form microorganism are their slow process, high purification cost, and high product price. Biosurfactant from natural resources are potentially produced in large scale due to their fast process and relatively cheap raw material. Metil Ester Sulphonate (MES) is one of biosurfactant produced from natural resources (from palm oil). The other example is biosurfactant from esterification of carbohydrate and carboxylic acid. This paper reviews the literatures dealing with biodegradable surfactant development which can be used as a reference of a research path way and an industrial scale production of biodegradable surfactant.

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