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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Practice of Fashion and Textile Education Journal
Ratih Kurniasari
Syekh-Yusuf Islamic University
Agriculture, Biological Sciences & Forestry Arts Humanities Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Physics

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Sustainable Waste Management Breakthrough: Transforming Plastic Waste into Eco-Friendly Briquette Charcoal Dine Agustine; Mutia Amyranti; Nia Komalasari; Ira Rumiris Hutagalung; Ratih Kurniasari
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 20, No 2 (2023): July 2023
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v20i2.452-460

Abstract

Plastic waste has emerged as an important environmental concern. Among the various types of plastic waste, such as Polyethylene Terephthalate (PET) and Polypropylene (PP), these two contribute the most to the overall plastic waste problem need to be efficiently managed. The purpose of this research is to study the manufacture of briquettes from PET and PP plastic waste with the help of starch adhesive. This research is expected to reduce the negative impact of plastic waste. In this study, the data to be obtained were the calorific value of the briquettes, ash content, moisture content, volatile content and bound carbon content. The results show that the best raw material combination in terms of the calorific value of the resulting charcoal briquettes is the raw material mixture with the addition of PET. The results of the PET type plastic briquettes were superior with the results of the calorific value test of 10.129 cal/gram, the proximate test results of 3.11% ash content, 4.98% moisture content, 65.31% volatile matter content, and 78% bound carbon content 79%. While the PP type plastic briquettes obtained a calorific value test result of 9,949 cal/gram, the calorific value was lower than the PET type plastic briquettes.
Integrated Pretreatment Optimization of PVA-Sized Lightweight Cotton Fabric Using Multifunctional Auxiliaries and Alkaline–Peroxide Systems Ratih Kurniasari; Mona Maulatul Fitriah
Practice of Fashion and Textile Education Journal Vol. 6 No. 1 (2026): Practice of Fashion and Textile Education Journal
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/pftj.v6i1.66514

Abstract

Cotton fabric preparation, comprising desizing, scouring, and bleaching, critically determines fabric quality prior to dyeing and finishing. This study investigated the effects of preparation process sequencing and multifunctional auxiliary concentration (Clarite One) on the physical properties of lightweight cotton fabric, including tear strength, absorbency, and whiteness index. C41166 cotton fabric was processed using three preparation methods: three-step, two-step, and one-step (simultaneous) systems, combined with Clarite One concentrations of 4, 8, and 10 g/L. Physical properties were evaluated according to SNI ISO 13937-1 (tear strength), AATCC 197 (absorbency), and AATCC 110 (whiteness). Data were analyzed using two-factor ANOVA followed by the Newman–Keuls post hoc test at a 95% confidence level. The results demonstrated that both process sequencing and auxiliary concentration significantly affected fabric performance. The optimum condition was achieved using the one-step method with 4 g/L Clarite One, producing the highest tear strength, adequate absorbency, and whiteness meeting commercial standards. Furthermore, the one-step process improved operational efficiency by reducing processing time and chemical consumption, highlighting its potential for enhancing productivity and sustainability in industrial cotton pretreatment
Co-Authors Dine Agustine Ira Rumiris Hutagalung Mona Maulatul Fitriah Mutia Amyranti Nia Komalasari