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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Kartika Kimia
Samsu Rizal
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering

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Audit Energi Dan Analisa Penghematan Energi Pada Pulp Machine 1 Dan 2 PT. Riau Andalan Pulp Dan Paper Samsu Rizal; Zulfansyah Zulfansyah; Hari Rionaldo; Sri Wahdini Rahmi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Energy auditing is one of the steps made in an effort to realize energy saving programs. The energy widely used in the pulp and paper industries is thermal energy (steam) and electrical energy. Pulp drying is one of the processes that many use such energy. The thermal energy used was of low to medium pressurized steam, which used to increase air temperature to dry pulp sheet. Research were conducted to identified energy usage and potency of energy saving in pulp machine especially in Pulp machine 1 and 2 area. The results of the study were found the influence of downtime to production cost. 30 minutes down time will increase production cost to $0.3545/ton pulp. Used of acacia as raw material will make pulp machine possible to run 1 screening system. It give benefit $ 2180.8 per day. Besides, the study also found four “steam trap” units and six “valve” units with “Passing" (leaking)” conditions that made “losses steam” of 467.8 Kg/hr or 1,467 tons of steam/year or about IDR 240.051,840 in a year. The inverse improvements/recovery of “steam trap” positions can save steam with a saving percentage of 0,34% of total steam costs per year and will return investment capital for four hours. Whereas the turnover on leaked “steam trap” units could save steam of 2,574 tons of steam/year with a savings percentage of 0.60% of total steam cost per year and would return investment capital for four months.Keyword: Electricity, Energy Audit, Pulp Dryer, Steam
Antibacterial Activity of the Essential Oil from Betel leaf (Piper betle L.) against Streptococcus pyogenes and Staphylococcus aureus Hernandi Sujono; Samsu Rizal; Sari Purbaya; Jasmansyah Jasmansyah
Jurnal Kartika Kimia Vol 2 No 1 (2019): Jurnal Kartika Kimia
Publisher : Department of Chemistry, Faculty of Sciences and Informatics, Jenderal Achmad Yani University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (326.319 KB) | DOI: 10.26874/jkk.v2i1.27

Abstract

Betel leaf (Piper betle L) is a medicinal plant. Its essential oil has antibacterial activity of phenolic compounds and theirs derivatives that can inhibit a wide range of bacteria. Streptococcus pyogenes and Staphylococcus aureus is a bacteria that can cause strep throat (pharyngitis). This study was conducted to determine how to obtain the essential oil of Betel leaf green (Piper betle L.) using steam-water distillation method and determine the antibacterial activity of essential oils of betel leaf (Piper betle L.) against the bacteria Streptococcus pyogenes and Staphylococcus aureus using wells method. Betel leaf 5 kg isolated using steam-water distillation of essential oils produces as much as 9 mL, yield of 0.135%, a specific gravity of 0.750 g / mL, and the refractive index of 1.337. The results of GC-MS analysis of betel leaf green essential oil obtained 10 Most compounds are compounds chavicol, eugenol, germacrene D, caryophyllen, eugenol acetate, 2-allyphenol, β-chamigrene, α-cadinene, terpineol, and α-humulene. Based on the test results of the antibacterial activity of betel leaf that the essential oil of betel leaf green (Piper betle L) at the concentration of 10%, 20%, 30%, and 40% can inhibit the bacteria Streptococcus pyogenes and Staphylococcus aureus, the category of barriers weak to moderate for bacteria Streptococcus pyogenes and weak to strong resistance categories for Staphylococcus aureus bacteria.
Co-Authors Hari Rionaldo Hernandi Sujono Jasmansyah Jasmansyah Sari Purbaya Sri Wahdini Rahmi Z Zulfansyah