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All Journal Buletin Udayana Mengabdi Jurnal Energi Dan Manufaktur Jurnal Teknosains Rekayasa Mesin Nomosleca ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Jurnal METTEK (Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin) Journal of Mechanical Engineering Science and Technology Jurnal Muara Sains, Teknologi, Kedokteran dan Ilmu Kesehatan EPI International Journal of Engineering
I Gusti Ngurah Nitya Santhiarsa
Program Studi Teknik Mesin Fakultas Teknik Universitas Udayana
Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering

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Journal : EPI International Journal of Engineering

 1 
Characteristics of Active Carbon from Utilization of Red Chili Trees (Capsicum annuum L) Ni Made Dwidiani; Putu Wijaya Sunu; Gusti Ngurah Nitya Santhiarsa
EPI International Journal of Engineering Vol 2 No 1 (2019): Volume 2 Number 1, February 2019 with Special Issue on Composite Materials & Stru
Publisher : Center of Techonolgy (COT), Engineering Faculty, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/epi-ije.022019.03

Abstract

This work studies the use of red chilli tree (capsicum anuumm L) waste as material of activated carbon and examines the morphological structure and elemental composition of the activated chili trees. The morphological structure was measured at TekMIRA (Pusat Penelitian dan Pengembangan Teknologi Mineral dan Batubara, Bandung) by using the scanning electron microscope (SEM), and the composition of the elements of carbon, hydrogen, nitrogen and ash is determined by the ultimate testing analysis with the ASTM D5373 standard. In the testing procedure, activated carbon is made from red chili tree waste by dehydration with a temperature of 2000 C for 1 hour and carbonized with a temperature of 3750 C for 1 hour. Then, the chemical activation (NaOH) is made in variation of concentration of 1%, 3%, and 5% with soaked time 24 hours, and dried at 2000 C for one hour. The carbonization at a concentration of 1% (NaOH) gave the best result on activated carbon from red chili trees.
Pb Adsorption of Coffee Peel Derived Activated Carbon by Varying KOH Concentration Dwidiani, Ni Made; Wardana, I Nyoman Gede; Suardana, Ngakan Gede Putu; Santhiarsa, I Gusti Ngurah Nitya; Sibarani, Relius Zakaria
EPI International Journal of Engineering Vol 7 No 1 (2024): Volume 7 Number 1, February 2024
Publisher : Center of Techonolgy (COT), Engineering Faculty, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/epi-ije.022024.01

Abstract

Turning biomass waste into added value product is crucial as it is not only beneficial to the environment but also to the economy. Coffee peel is a waste that has excellent potential to produce activated carbon. Activated carbon is carbon that has gone through an activation process and has a large surface area and higher adsorption rate. The high need for activated carbon in overcoming waste problems makes it useful to reduce its environmental impact. Activated carbon is widely used in water filtration including heavy metal Pb and Cd. The aim of this research is to study the impact of KOH concentration on Pb adsorption of activated carbon derived from coffee peel. KOH activator could enhance the performance of the activated carbon. The KOH activator concentration is varied to obtain the best-surface structure in activated carbon. The KOH concentration is 2,3 and 4 molars. Each specimen will undergo the same carbon activation process by maintaining the carbonization and drying temperature. Then at the activation stage, variations of KOH concentration will be mixed with the activated carbon and soaked for 24 hours with a weight ratio of KOH to charcoal of 1,5 to 1. The result shown that fixed carbon of 2,3,4 molar KOH concentration are 45.99%, 58.22%, 42.99% respectively, while Pb adsorption are 96.56%, 98.34% and 96.45%. In addition, the adsorption rate of activated carbon is proportional to the concentration level of the KOH solution. However, there is a limit on adsorption concentration, so there is a significant decrease when KOH exceeds the saturation point. Based on this research, Pb adsorption of coffee peel derived activated carbon is quite significant even though the amount of fixed carbon relatively low. Keywords: Activated carbon; coffee peel; KOH; Pb
Co-Authors Achmad Assad Sonief Andoyo Rifky Widighda Benatyar - CI Putri Kusuma K Daud Simon Anakottapary Dewa Ngakan Ketut Putra Negara Dwidiani, Ni Made Eko Marsyahyo I Gusti Agung Alit Suryawati I Gusti Bagus Wijaya Kusuma I Gusti Ngurah Priambadi I Gusti Ngurah Putu Tenaya I Kade Agus Sugiarta I Ketut Adi Sugita I Ketut Suarsana I Made Parwata I Nengah Suarnadwipa I Nyoman Budiarsa . I Nyoman Gede Wardana I Putu Agus Tina I Wayan Bandem Adnyana I Wayan Lega Suprapto Ida Bagus Gde Widiantara JAYA, KOMANG ALIT KUMARA Kelvin Ryanta Tanato Ketut Astawa Komang Alit Kumara Jaya Luh Putu Ike Midiani M.Pd S.T. S.Pd. I Gde Wawan Sudatha . Negara, I Gede Artha Negara, Komang Metty Trisna Ni Made Dwidiani Putu Wijaya Sunu Si Putu Gede Gunawan Tista Sibarani, Relius Zakaria Suardana, Ngakan Gede Putu Suprapto, I Wayan Lega Tjokorda Gde Tirta Nindhia