Article Per Year (5 Year)
p-Index From 2020 - 2025
0.659
P-Index
This Author published in this journals
All Journal AUSTENIT IJEMS (Indonesian Journal of Environmental Management and Sustainability) Jurnal Teknik Kimia
Haryani, Nina
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
The effect of Used Cooking Oil (UCO) pre-treatment using bagasse on Free Fatty Acid (FFA) content Haryani, Nina; Utami, Andiga Asih Ambarwati; Imanda, Elfrida Rasyidah Desvi
Jurnal Teknik Kimia Vol 30 No 2 (2024): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya in collaboration with Asosiasi Pendidikan Tinggi Teknik Kimia Indonesia (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jtk.v30i2.1674

Abstract

Used Cooking Oil (UCO) refers to cooking oil that has been previously used. UCO can be reused through impurity removal and reduction of the FFA high content. The reduction of FFA content in UCO can be achieved using the adsorption method, employing adsorbents derived from various materials such as agricultural waste and zeolite. Examples of agricultural waste suitable for this purpose include rice husks, straw, and bagasse, the latter of which can serve as a natural adsorbent. This study aimed to investigate the impact of UCO pre-treatment on FFA content. The research comprised three stages: preparation, adsorption, and analysis. Initially, the FFA content in UCO was 5.50 %. The pre-treatment of UCO involved using bagasse with varying stirring speeds (0, 150, 200 rpm) and adsorption temperatures (70, 85, 100 oC). Optimal pre-treatment conditions were identified, with the most significant reduction in FFA to 1.49 % observed at 200 rpm and 100 oC. The utilization of bagasse as a natural adsorbent effectively reduces the high FFA content in UCO as part of its pre-treatment process.
Exploration of Weak Acid Solvent Usage in the Separation of Aluminum (Al) from Multilayer Plastic Waste Selpiana, Selpiana; Haryani, Nina; Putri, Rizka Wulandari
Indonesian Journal of Environmental Management and Sustainability Vol. 9 No. 3 (2025): September
Publisher : Magister Program of Material Science, Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijems.2025.9.3.98-104

Abstract

Multilayer plastic waste is difficult to biodegrade, causing environmental problems. An alternative to processing multilayer plastic waste is to separate aluminum from the polymer using a delamination process with acid solvents. In this study, a combination of chemical (acid solvents), thermal (90oC), and mechanical (stirring at 300 rpm) methods was employed to evaluate the efficiency of delamination of multilayer plastic packaging. Several weak acid solvents, including acetic acid, citric acid, and formic acid, were tested at a concentration of 30% and a reaction time of 10 minutes. The method involved immersing cut multilayer plastic samples into acid solutions under controlled conditions, followed by filtration and drying to recover the aluminum layer. The best result was obtained using 30% formic acid, which successfully separated and recovered 0.940 g or 87% of aluminum from a 1.08 g multilayer sample. This process demonstrates an effective, relatively low-cost approach to enhance the recyclability of multilayer plastic waste, contributing to a more sustainable plastic waste management strategy.
COMPARISON OF THERMAL INSULATION OF GLASS WOOL AND SUPERBTEX TO THE DRYING RATE OF FISH DRYING EQUIPMENT Firdaus, Aneka; Gunawan, Gunawan; Saputra, M. A. Ade; Haryani, Nina
AUSTENIT Vol. 15 No. 1 (2023): AUSTENIT: April 2023
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v15i1.6546

Abstract

The use of glasswool or Superbtek insulation material in a fish dryer is one way to reduce the heat coming out of the fish dryer, so that the heat temperature utilized for the fish drying process will be maximized. These two insulation materials will be compared which one is better able to reduce heat. This fish dryer will be made with certain dimensions as needed, this tool design measures: 100 cm long, 50 cm wide, and 50 cm high for the outer wall, and 90 cm long, 40 cm wide, 40 cm high for the inner side wall. The height of the tool frame legs is 70 cm. Glasswool and Superbtex materials are affixed to the outside wall. The two insulation materials will be analyzed how much they affect the heat on the wall of the dryer, aiming to get the best insulation material between the two for the drying rate. With the experimental method, it was found that using Superbtex insulation material; the temperature inside the dryer was 94.200C and the temperature of the outer wall was 45.680C, the average drying rate was 4.306 gr/min, with the use of Glassswool insulation, the temperature of the inside wall of the dryer was 83.50C and the temperature of the outside wall of the dryer was 47.580C, the average drying rate was 3.489 gr/min. So superbtex insulation material is better to use than glasswool insulation material.
Co-Authors Aneka Firdaus Gunawan Gunawan Imanda, Elfrida Rasyidah Desvi Rizka Wulandari Putri Saputra, M. A. Ade Selpiana, Selpiana Utami, Andiga Asih Ambarwati