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All Journal Journal Of Chemical Process Engineering (JCPE) Jurnal Teknik Mesin Indonesia Journal Of Chemical Process Engineering al Kimiya : Jurnal Ilmu Kimia dan Terapan
Neny Rasnyanti M Aras
Akademi Komunitas Industri Manufaktur Bantaeng
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Modifikasi Bioadsorben Rumput Laut (Eucheuma Cottonii)-Abu Sekam Padi Sebagai Bioadsorben Limbah Cair Industri Minuman Ringan Agus Salim; Neny Rasnyanti M Aras; Boy Chandra Sitanggang
Journal of Chemical Process Engineering Vol 6, No 2 (2021)
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (472.733 KB) | DOI: 10.33536/jcpe.v6i2.800

Abstract

Adsorpsi bahan pencemar dengan menggunakan biomassa telah banyak diteliti dua diantaranya adalah menggunakan abu sekam padi dan rumput laut. Dalam penelitian ini bertujuan untuk mengkaji bagaimana kombinasi dua biomassa tersebut dalam menurunkan nilai cemaran limbah serta untuk mengetahui bobot adsorben dan waktu kontak optimum terhadap kemampuan bioadsorben dalam mengadsorpsi limbah cair. Efektifitas bioadsorben diuji melalui beberapa parameter yakni pH, turbiditas, kadar logam Cd, total padatan tersuspensi (TSS) dan COD. Dosis optimum yang paling efektif dalam menurunkan cemaran limbah cair industri minuman ringan adalah pada 0,5 gram dalam 150 mL limbah cair selama 30 menit dan 1.5 gram selama 30 menit pada penurunan kadar logam Cd yang diuji menggunakan adsorben abu sekam padi. Kemudian dilakukan variasi kombinasi rumput laut dan abu sekam padi 100, 75, 50, dan 25(%). Dari kombinasi tersebut rumput laut sebanyak 100% memiliki efektivitas yang paling tinggi dengan penurunan kadar pH sebesar 27 %, turbiditas sebesar 75,16 %, TSS sebesar 91,43 % dan COD sebesar 97,77 %.
Analisis kekuatan impak komposit serat batang pohon waru (Hisbiscus tiliaceus) Muhammad irwan; Neny Rasnyanti M Aras
Jurnal Teknik Mesin Indonesia Vol. 18 No. 2 (2023): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v18i2.439

Abstract

Environmental conscious technology, or green technology, has become a significant focus for countries worldwide. The development of environmentally friendly materials is a top priority, and it is a major concern for researchers who continue to conduct studies to support the advancement of green technology. Research on the Hibiscus tiliaceus tree bark fiber (known as 'waru' in Indonesian) has become relevant in this context. These fibers have undergone treatment with NaOH and turmeric and are utilized as reinforcements in composites or combined with epoxy resin. This study aims to empirically assess their mechanical properties and is expected to provide valuable insights into the application of green and environmentally friendly technology. The objective of this research is to identify the effects of various treatments. These treatments include immersing the fibers in a NaOH 5% solution for 2 hours, heating the turmeric in a 20% solution to a temperature of 70-80°C, followed by a 2-hour incubation, as well as immersing the fibers in a NaOH 5% solution for 2 hours, followed by heating the turmeric in a 20% solution to 70-80°C for another 2-hour period, with respect to the bending strength of the waru tree bark fiber composites. Impact testing is conducted using ASTM 256, and the results show that the best impact energy, with the highest fracture energy, is achieved with the specimen that underwent the NaOH 5% solution treatment for 2 hours, reaching 2.142 Joules. The best impact strength was observed in specimens without any treatment, with a value of 1.529 Joule/mm².
Modifikasi Bioadsorben Rumput Laut (Eucheuma Cottonii)-Abu Sekam Padi Sebagai Bioadsorben Limbah Cair Industri Minuman Ringan Agus Salim; Neny Rasnyanti M Aras; Boy Chandra Sitanggang
Journal of Chemical Process Engineering Vol. 6 No. 2 (2021): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v6i2.817

Abstract

Adsorpsi bahan pencemar dengan menggunakan biomassa telah banyak diteliti dua diantaranya adalah menggunakan abu sekam padi dan rumput laut. Dalam penelitian ini bertujuan untuk mengkaji bagaimana kombinasi dua biomassa tersebut dalam menurunkan nilai cemaran limbah serta untuk mengetahui bobot adsorben dan waktu kontak optimum terhadap kemampuan bioadsorben dalam mengadsorpsi limbah cair. Efektifitas bioadsorben diuji melalui beberapa parameter yakni pH, turbiditas, kadar logam Cd, total padatan tersuspensi (TSS) dan COD. Dosis optimum yang paling efektif dalam menurunkan cemaran limbah cair industri minuman ringan adalah pada 0,5 gram dalam 150 mL limbah cair selama 30 menit dan 1.5 gram selama 30 menit pada penurunan kadar logam Cd yang diuji menggunakan adsorben abu sekam padi. Kemudian dilakukan variasi kombinasi rumput laut dan abu sekam padi 100, 75, 50, dan 25(%). Dari kombinasi tersebut rumput laut sebanyak 100% memiliki efektivitas yang paling tinggi dengan penurunan kadar pH sebesar 27 %, turbiditas sebesar 75,16 %, TSS sebesar 91,43 % dan COD sebesar 97,77 %.
FABRICATION OF CU MODIFIED NANO CHITOSAN WITH BROMOCRESOL GREEN AS INTELLIGENT PACKAGING Neny Rasnyanti M Aras; Adinda Irwana; Ameliana Utami
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol 11, No 1 (2024): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v11i1.33742

Abstract

In recent advancements, the development of smart packaging systems for food has focused on utilizing composite materials to enhance functionality and sustainability. In this study, the composite film from chitosan and PVA was combined at various concentrations (ranging from 0.1% to 0.5%) with the addition of Cu(500mM) and 1% STPP at a 5:1 ratio. An additional indicator was included to detect fish spoilage. The synthesized chitosan material was then blended with PVA to form a composite film. The film was characterized using FTIR, which confirmed the presence of fingerprint vibrations indicating the cross-linking between TPP, chitosan, and Cu. These bonds were observed at wave numbers 1118 cm-1, 879 cm-1, and 603 cm-1. SEM analysis revealed that the film had particle sizes ranging from 865 nm to 1.49 μm. XRD analysis showed distinctive features of pure chitosan and chitosan composite. The composite film K-05 produced an amorphous structure, indicating decreased crystallinity due to the addition of STPP and Cu. The water uptake test demonstrated that an increased concentration of chitosan in the composite led to higher absorption and solubility effects. Conversely, the addition of chitosan in the film decreased water vapor permeability as determined by the water vapor permeability test. The antibacterial test conducted on all films (concentration of 0.1% to 0.5%) indicated that the films K-01 and K-02 exhibited the best zone of inhibition against Escherichia coli. This study sucessfully synthesized and characterized a smart packaging film composed of polyvinyl alcohol (PVA), chitosan, copper (Cu), and bromocresol green (BCG) indicator, designed to monitor food freshness through visual pH changes and inhibition of microbial growth.
Co-Authors Adinda Irwana Agus Salim Ameliana Utami Boy Chandra Sitanggang Muhammad irwan