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All Journal Alchemy : Journal of Chemistry Jurnal Inovasi Teknik Kimia
Aferta, Lusi
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Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology

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Synthesis of Smart Packaging from Cellulose Acetate with The Addition of AgNO3 as An Antibacterial Substance Febryanti, Amalyah; Benu, Marlon; Aferta, Lusi; Siswara, I.M; Mulijani, Sri; Alif, Alfiah
ALCHEMY:Journal of Chemistry Vol 12, No 1 (2024): ALCHEMY: JOURNAL OF CHEMISTRY
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/al.v12i1.13019

Abstract

Synthesis of smart packaging from cellulose acetate with the addition of AgNO3 as an antibacterial substance has been investigated. The purpose of this study is to fabricate smart packaging from cellulose acetate with the addition of AgNO3 as an antibacterial substance. The method used was solution casting. In addition, this study was also characterizing the smart packaging, they included tensile strength and elongation percent test, antibacterial test, morphology analysis using SEM, and biodegradability test. The plastics obtained were clearly yellow, not easily damaged, a little thick, and the smooth surface and slightly bubbly. The largest tensile strength of plastic was 0.0661 MPa, it found in sample No. 2, while the smallest tensile strength was 0.027 MPa, it found in sample No. 1. The greatest elongation value at break was 5% found in sample No. 4, while the smallest elongation value at break was 3.5% in sample No. 3. The result of antibacterial test reported that the freshest mangoes were shown by samples No. 1 and No. 2; while the fast-rotting mangoes were shown in the sample No. 3 and No. 4. The results of the SEM test showed the presence of nano-sized particles that spreaded in the plastic body. The greatest degradability degree were sample No. 4 about 0.0009 g/day with the percentage of mass loss about 17.38%. Futhermore, cellulose acetate can be used as a basic material for making plastics. The addition of AgNO3 in plastic synthesis can help to delay the process of fruit spoilage caused by bacteria.
SYNERGISTIC INTERFACIAL CHEMISTRY OF HUMIC ACID AND ACTIVATED FLY ASH FOR HIGH-PERFORMANCE Mn²⁺ ADSORPTION Susparini, Ninik Triayu; Ramadhan, Alamsyah Sultan; Aferta, Lusi; Benu, Marlon Jusak Renaldy; Wijayanti, Sri; Tantowi, Ali
Jurnal Inovasi Teknik Kimia Vol. 10 No. 4 (2025): October| INTEKA - Jurnal Inovasi Teknik Kimia
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v10i4.14706

Abstract

This study developed a hybrid adsorbent derived from activated fly ash (FA) and humic acid (HA) for effective Mn²⁺ removal from aqueous solutions. Fly ash was activated using 1 M NaOH to increase its surface hydroxyl groups (≡Si–OH and ≡Al–OH) and enhance reactivity. The activated FA was then composited with HA, which contains abundant –COOH and –OH groups, forming an inorganic–organic hybrid with improved adsorption capability. The HA–FA composite with a 1:3 mass ratio exhibited the highest Mn²⁺ removal efficiency of 98.80% after 120 minutes, significantly outperforming both HA and FA individually. FTIR analysis confirmed the formation of Si–O–C and Al–O–C linkages, indicating strong chemical interactions between the mineral and organic phases. Statistical analysis (Shapiro–Wilk, Levene, and ANOVA; p < 0.05) demonstrated that both adsorbent composition and contact time significantly influenced the adsorption efficiency. Overall, the HA–FA hybrid represents a low-cost, sustainable, and high-performance adsorbent capable of efficiently removing heavy metals from wastewater, providing a promising approach for transforming industrial and natural wastes into functional environmental materials
Co-Authors Ali Tantowi Alif, Alfiah Benu, Marlon Jusak Renaldy Benu, Marlon Jusak Rinaldy Febryanti, Amalyah Ninik Triayu Susparini, Ninik Triayu Ramadhan, Alamsyah Sultan Siswara, I.M Sri Mulijani Sri Wijayanti