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Ragadhita, Risti
Universitas Pendidikan Indonesia
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Journal : Communications in Science and Technology

 1 
Isotherm adsorption characteristics of carbon microparticles prepared from pineapple peel waste Nandiyanto, Asep Bayu Dani; Santiuly Girsang, Gabriela Chelvina; Maryanti, Rina; Ragadhita, Risti; Anggraeni, Sri; Fauzi, Fajar Miraz; Sakinah, Putri; Astuti, Asita Puji; Usdiyana, Dian; Fiandini, Meli; Dewi, Mauseni Wantika; Al-Obaidi, Abdulkareem Sh. Mahdi
Communications in Science and Technology Vol 5 No 1 (2020)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1227.71 KB) | DOI: 10.21924/cst.5.1.2020.176

Abstract

The objective of this study was to investigate isotherm adsorption of carbon microparticles from pineapple peel waste. Carbon microparticles were prepared by carbonizing pineapple peel waste at 215-250°C and grinding using a saw-milling process. To investigate adsorption properties of carbon microparticles, experiments were done by evaluating adsorption of curcumin (as a model of adsorbate) in the ambient temperature and pressure under constant pH condition. To confirm the adsorption characteristics, carbon particles with different sizes (i.e., 100, 125, and 200 ?m) were tested, and the adsorption results were compared with several standard isotherm adsorption models: Langmuir, Freundlich, Temkin, and Dubinin- Radushkevich. To support the adsorption analysis, several characterizations (i.e., optical microscope, sieve test, and Fourier transform infrared analysis) were conducted. The adsorption test showed that the adsorption profile is fit to the Freundlich model for all variations, indicating the multilayer adsorption process on heterogeneous surfaces and interactions between adsorbate molecules. The results from other isotherm models also confirmed that the adsorption process occurs physically via Van der Waals force in binding adsorbate on the surface of adsorbent.
Domestic waste (eggshells and banana peels particles) as sustainable and renewable resources for improving resin-based brakepad performance: Bibliometric literature review, techno-economic analysis, dual-sized reinforcing experiments, to comparison ... Nandiyanto, Asep Bayu Dani; Ragadhita, Risti; Fiandini, Meli; Al Husaeni, Dwi Fitria; Al Husaeni, Dwi Novia; Fadhillah, Farid
Communications in Science and Technology Vol 7 No 1 (2022)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.7.1.2022.757

Abstract

The objective of this study is to develop a new environmentally-friendly brake pad made from eggshells (Es) and banana peels (BPs) as reinforcement agents. E and BP particles as dual reinforcement with various compositions were combined. The E/BP mixture was then embedded on a polymer matrix composing a resin/hardener mixture in a 1:1 ratio. As a standard, brake pads using a single reinforcement of E and BP particles were also fabricated. Physical properties (i.e. particle size, surface roughness, morphology, and density), as well as mechanical properties (i.e. hardness, wear rate, and friction coefficient properties) were investigated. It was observed that using dual reinforcements was preferable (compared to using single reinforcements) because they had a synergistic effect on the mechanical properties of the brake pad. The best mechanical properties were found in dual reinforcements of brake pad specimens using E/BP particles with a higher BP ratio in which the value of the stiffness test, puncture test, wear rate, and coefficient of friction were 4.5 MPa, 86.80, 0.093×10-4 g/s.mm2, and 1.67×10-4, respectively. A high BP particle ratio played a dominant role in dual reinforcements, increasing the resin's bonding ability and resulting in good adhesion between the reinforcement and matrix. When compared to commercial brake pads, the brake pad specimens fabricated in this study met the standards. The techno-economic analysis also confirmed the prospective production of brake pads from E and BP particles (compared to commercial brake pads). From this research, it is expected that environmentally friendly and low-cost brake pads can be used to replace the dangerous friction materials.
Co-Authors A Nurdiana Abdulkareem Sh. Mahdi Al-Obaidi Abdulkareem Sh. Mahdi Al-Obaidi Abidin, Muhamad Adani Ghina Puspita Sari Adzra Zahra Ziva Agus Kamaludin, Agus Agus Solehudin Ahmad Aminudin Aini, Rifti Nurul Al Husaeni, Dwi Fitria Al Husaeni, Dwi Novia Al-Obaidi, Abdulkareem Sh. Mahdi Anasdzaky, Fawwaz Rizqi Anceu Murniati Andika Purnama Shidiq Andika Purnama Shidiq Andri Syah Putra Anisa Noorlela Arif Hidayat Asep Bayu Dani Nandiyanto Asep Supriatna, Asep Astuti, Asita Puji Aulia Rahma, Sifa Bilad, M. Roil Bilad, Muhammad Roil Budi Susetyo Chen, Fatimah Chen Citra Nurhashiva Citra Nurhashiva Dewi, Mauseni Wantika Dian Usdiyana Dwi Novia Al Husaeni Dwi Novia Al Husaeni Eddy Soeryanto Soegoto Endang Rusyani Fadhillah, Farid Fatimah, Siti Faturohman, Andika Haikal Fauzi, Fajar Miraz Fauzia Nur Awaliah Fiandini, Meli Fika Annisa Sabrina Fitri Febriyanti Fitri, Siti Hikmatul Hafidh, Ashary Fathul HERNANI - Hernawati, Ati Hofifah, Siti Nur Indra Mamad Gandidi Intan Febriani, Lidia Irine Sofianty Jessica Veronica L Astuti Lianawati, Maya Lidia Intan Febriani Mahmudatussa'adah, Ai Mahmudatuss’adah, Ai Maya Lianawati Meli Fiandini Mentari Putri Aprilia Mia Widyaningsih Muhammad Aziz Muhammad Aziz Muhammad Roil Bilad Muji Setiyo Nia Sutisna, Nia Noorlela, Anisa Nurhashiva, Citra Nyoman Ayu Kristinawati Obaidi, Abdulkareem Sh. Mahdi Al Obie Farobie Piantari, Erna R P Dewi Ratnengsih, Een Rina Maryanti Rizky, Karina Mulya Rofi Fadilah Madani Rosi Oktiani Rusyani, Endang Saepulloh, Anwar SAKINAH, PUTRI Salam, Haipan Salsabila, Annisa Rizky Santiuly Girsang, Gabriela Chelvina Sidik, Adi Permana Sifa Aulia Rahma Siti Sriyati Sri Anggraeni Sri Rahayu Sukrawan, Yusep Syarafah, Karina Nur Syazwany, Aisha Nadhira Syuhada, Themy Sabri Tedi Kurniawan Tedi Kurniawan Tedi Kurniawan Tedi Kurniawan Tedi Kurniawan Teguh Kurniawan Teguh Kurniawan Tria Nurwina Novianti Veronica, Jessica Wafa Raihana Arwa Widyaningsih, Mia Winny Liliawati Yuni Kartika Suryana Yusrianti Sabrina Kurniadianti Yustika Desti Yolanda