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Optimized Carbonization and Kinetic Analysis of Palm Kernel Shell Porous Carbon for Heavy Metal Adsorption Hafizah, Mas Ayu Elita; Manaf, Azwar; Valency, Tiara; Andreas, Andreas; Manawan, Maykel
Indonesian Journal of Chemistry Vol 25, No 3 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.100714

Abstract

This study explores the use of porous carbon derived from palm kernel shells to adsorb lead ions (Pb2+) from water. Porous carbon was produced by carbonizing palm kernel shells at different temperatures (400, 600, and 800 °C) and was evaluated for its effectiveness in a lead chloride (PbCl2) solution. The best adsorption rate, reducing Pb2+ concentration by 27.5%, was observed by carbonized material at 800 °C with a 3 h contact time. Kinetic analysis suggested that the process followed a pseudo-second-order model, indicating that chemical adsorption was the dominant mechanism. The adsorption data were best described by the Freundlich isotherm, implying multilayer adsorption on an uneven surface. These findings highlight the efficient and low-cost potential of palm kernel shell-based porous carbon for removing heavy metals from wastewater. Palm kernel shell-derived porous carbon has proven to be a sustainable, cost-effective, and practical solution for mitigating Pb2+ contamination, positioning it as a promising candidate for environmentally friendly water treatment applications.
Application of Nanofibers from Electrospinning in Development of Smart Textiles for Military Clothing Setianingsih, Anisa; Ulfitri, Khairunnisa; Hafizah, Mas Ayu Elita
International Journal of Recent Technology and Applied Science (IJORTAS) Vol 7 No 2: September 2025
Publisher : Lamintang Education and Training Centre, in collaboration with the International Association of Educators, Scientists, Technologists, and Engineers (IA-ESTE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36079/lamintang.ijortas-0702.780

Abstract

This paper examines the application of nanofibers produced via electrospinning in the development of smart textiles for military clothing. Smart textiles represent a significant advancement, integrating functionality with comfort to enhance traditional military garments. This study explores the potential of smart textile technology to improve the efficiency and effectiveness of military operations through capabilities such as monitoring soldiers' physiological conditions, facilitating enhanced communication, and providing protection against environmental threats. A literature review methodology was employed to analyze existing research on smart textiles in the context of military applications. This review covers technological components, benefits, challenges, and the potential of nanofibers in military clothing. The results highlight the capacity of electrospun nanofibers to improve the protective, communicative, and adaptive properties of military wear, with a focus on materials like carbon nanotubes and graphene and their applications in enhancing tensile strength, conductivity, and UV protection. This paper contributes to a deeper understanding of smart textile technology and its potential to advance the defense industry and improve the quality of protective equipment for soldiers.
Evaluation of Protection Strategies Against Cyanide Exposure in Chemical Weapon Attack Scenarios: an Integrated Approach Between Security and Public Health Rosyda, Esa Dina Inda; Prakoso, Lukman Yudho; Tasdik, Tasdik; Mahroza, Jonni Mahroza; Ruyat, Yayat; Hafizah, Mas Ayu Elita
Formosa Journal of Applied Sciences Vol. 3 No. 7 (2024): July 2024
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/fjas.v3i7.9889

Abstract

This integrated analysis explores real-world case examples and related data findings to gain a deeper understanding of the challenges and protection strategies needed to face these types of threats. The selected cases include the terrorist attack in Tokyo in 1995, the murder of Alexander Litvinenko in London in 2006, as well as the cyanide poisoning case in Jakarta in 2004. The data findings highlight the importance of developing rapid cyanide detection technology, personal protection equipment, coordinated emergency response, and effective law enforcement in protecting the public from cyanide exposure. Recommendations include investment in research and development of innovative protection technologies, development of standardized emergency response guidelines, and public outreach campaigns. With a holistic approach and cross-sector collaboration, it is hoped that we can increase preparedness and protect the community from the threat of chemical attacks involving cyanide.
ANALISIS SIFAT MEKANIK KOMPOSIT SERAT BAMBU TALI SEBAGAI MULTILAYERED ARMOR SYSTEM Ramin, Rosihan; Sofyan , Bondan Tiara; Hafizah, Mas Ayu Elita
ELEMEN : JURNAL TEKNIK MESIN Vol. 10 No. 1 (2023)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v10i1.231

Abstract

Natural fiber composites are an alternative Multilayered Armor System (MAS) material. One of the most common natural fibers used as MAS is a fiber made from bamboo rope. Bamboo fiber composites have a low density and a low manufacturing cost. However, in terms of mechanical properties, bamboo fiber composites have different characteristics. In this research, the mechanical properties of the bamboo rope fiber composite, which has an orientation of 0°/90°, will be analyzed. The composite materials used are bamboo rope fiber as a reinforcement and epoxy as the fiber binding matrix. From the mechanical tests performed, it was found that the average tensile strength of the bamboo rope fiber composite was 109.86 MPa. The bending strength is 95.32 MPa, and the shear strength is 34.11 MPa.
The Treat of Chemical Weapons in 21st Century (Case Study: The Poisoning of Alexei Navalny with Novichok Nerve Agent) Azizah, Yuniarti Nur; Jupriyanto; Jadhana, I.B. Putra; Ruyat, Yayat; Hafizah, Mas Ayu Elita
Jurnal Multidisiplin Madani Vol. 4 No. 6 (2024): June 2024
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/mudima.v4i6.9672

Abstract

Chemical weapons have been outlawed as part of CBRNE (Chemical, Biological, Radioactive, Nuclear, and Explosive) weapons under the Chemical Weapons Convention since 1993. The convention's purpose is to eradicate all types of weapons of mass destruction by preventing participating states from developing, producing, acquiring, storing, retaining, transferring, or using chemical weapons, including those developed, produced, and used. The poisoning of Alexei Navalny in 2020 with the nerve toxin Novichok sparked widespread concern about the topic of chemical weapons in the twenty-first century. This study combined qualitative methodologies with descriptive analyses to better comprehend the incident. Strict enforcement, increased international collaboration, and improved detection technology are critical to preventing their spread. This episode worsened relations between Russia and the West, highlighting the breakdown of standards prohibiting the use of chemical weapons. The same nerve toxin was used to poison Sergei Skripa and his daughter in Salisbury. This chemical is difficult to detect and has a quick and fatal effect on the human body. Its usage in attacks on humans has raised serious concerns around the world. As a result, a coordinated and comprehensive global reaction is required to confront the threat of chemical weapons while upholding international rules barring their use
Study on the Safety of Radioactive Waste Management in the Radiology Laboratory of Indonesian Hospital Ophelia, Nadya; Jandhana, I.B Putra; Jupriyanto; Ruyat, Yayat; Hafizah, Mas Ayu Elita; Simanjuntak, Junita Dewi Sari
Jurnal Multidisiplin Madani Vol. 4 No. 6 (2024): June 2024
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/mudima.v4i6.9673

Abstract

One of the uses of radioactive sources is in the field of health, where they are used in hospitals for radiotherapy, nuclear medicine, and radiodiagnostics. Nevertheless, the use of nuclear technology in the health sector produces radioactive waste substances that pose health and environmental risks, and have the potential to be misused by irresponsible groups and terrorists to create radiological weapons that are used in crimes and pose a threat to security. Any activity that utilizes radioactive substances must pay attention to radioactive waste management, which applicable regulations must appropriately manage. The research method used is descriptive research with a qualitative approach, and data collection techniques are used with literature review methods. Radioactive waste produces alpha, beta, and gamma radiation. Radioactive waste treatment techniques can be carried out by separation, storage, transportation, treatment, and final disposal. Governments, hospitals, relevant organizations, and communities should work together to improve the safety of radioactive waste management and protect the environment and human health. It is essential to understand the types of radioactive waste substances, comply with applicable rules and regulations, implement appropriate radioactive waste treatment techniques, and raise awareness about the dangers of radioactive waste substances
Asean Modern Leadership Styles: A Critical Analysis Gumilar, Ruly; Widodo, Pujo; Ayu Elita Hafizah, Mas
Jurnal Indonesia Sosial Sains Vol. 3 No. 02 (2022): Jurnal Indonesia Sosial Sains
Publisher : CV. Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jiss.v3i02.537

Abstract

The countries that are members of ASEAN have a vision to create regional stability both politically, economically as well as defense and security. Strategic location of ASEAN countries, world geopolitical and geoeconomic dynamics, shifting of world power maps and conflicts of interest. This condition has the potential to make ASEAN the axis of the world, but ASEAN countries are not geographically integrated, so that the geopolitical position of each member country is different and different levels of economy have an impact on the implementation of an agreement. The importance of strategic leadership in ASEAN with a dynamic and visionary modern leadership style is needed to be able to maintain stability in the ASEAN region, as well as make a new axis of world power. The future of ASEAN is not only influenced by the leadership style of the ASEAN Chair, but is also influenced by the Leadership Style of ASEAN member countries, the ASEAN Leadership Style in recent years does not seem to have a significant impact. Based on the consideration of the different conditions of ASEAN members, the Modern Leadership Style: Adaptive and Visionary, can be applied by the ASEAN Chair, so that ASEAN's functions and roles are more optimal.
Use of Explosives: Classification and Regulation Bermana, Seftiandra Bermana; Hafizah, Mas Ayu Elita; Ruyat, Yayat; Rosyida, Esa Dina Inda
Indonesian Journal of Interdisciplinary Research in Science and Technology Vol. 2 No. 5 (2024): May 2024
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/marcopolo.v2i5.9019

Abstract

Of the many qualifications of explosives, for some reason allowed for use by civilians. This study aims to analyze the classification and regulation of the use of explosives, using the literature study method. As a result, there are special rules from several institutions for the use of explosives in various fields.