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All Journal Jurnal Rekayasa Proses Seminar Nasional Teknik Kimia Kejuangan agriTECH Jurnal Rekayasa Proses ASEAN Journal of Chemical Engineering
Chandra Wahyu Purnomo
Department Of Chemical Engineering, Universitas Gadjah Mada, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Environmental Science Social Sciences

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Journal : ASEAN Journal of Chemical Engineering

 1 
The Development of Lithium Ion Recovery Method by Activated Carbon and Natural Zeolite-based Adsorbent Chandra Wahyu Purnomo; Endhy Kesuma; Sang Kompiang Wirawan; Hirofumi Hinode
ASEAN Journal of Chemical Engineering Vol 17, No 1 (2017)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (700.389 KB) | DOI: 10.22146/ajche.49569

Abstract

Coconut shell char and natural zeolite been activated and then tested to separate between lithium and cobalt ions in solutions. The capacity of adsorption and selectivity between the ions were investigated. The longer adsorption time, the capacity was getting better but the selectivity decreased. It was observed that the optimum selectivity was obtained by 3 hours adsorption using activated carbon. The chemical activated sample has superior performance and selectivity compared with physical activation carbons of the same activation temperature. After the adsorption, pure lithium solution can be obtained while the other metal is adsorbed inside the adsorbent
Application of Refuse-Derived Fuel (RDF) Plant in Piyungan Landfill Municipal Solid Waste Management Diananto Prihandoko; Chandra Wahyu Purnomo; Primanda Kiky Widyaputra; Nasirudin Nasirudin
ASEAN Journal of Chemical Engineering Vol 22, No 2 (2022)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ajche.75560

Abstract

Piyungan Landfill is the biggest landfill in the Yogyakarta Province that still operates in overcapacity condition. A new alternative is highly required in solid waste management in the landfill, which can reduce the volume of the waste coming into it and decrease the need for a new landfill area. Refused-derived fuel (RDF) plant is one of the technological alternatives in solid waste management that has the potential to reduce the volume of solid waste and change the waste into fuel. The study analyzed the potential of the application of the RDF to reduce the volume of solid waste in the Piyungan landfill and its economic feasibility. The results of the analysis showed that during the operational period of the RDF plant, the volume of the solid waste coming into the landfill could be annually reduced by 43% on average. The results of the economic analysis show that the RDF plant in the Piyungan Landfill is feasible to apply with an NPV of IDR 281.46 billion, an IRR of 24%, and a payback period of 6 years.
Zeolite Effect on Solid Product Characteristics in Hydrothermal Treatment of Household Waste Lalak Tarbiyatun Nasyin Maleiva; Chandra Wahyu Purnomo; Putranty Widha Nugraheni; Eka Kusumawardhani; Leonardus Sandy Ade Putra
ASEAN Journal of Chemical Engineering Vol 23, No 1 (2023)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ajche.77544

Abstract

The number of primary energy sources in Indonesia will run out quickly. Therefore, innovation is required to provide renewable energy sources (NRE) that accommodate the increasing energy necessities. Hydrothermal is the potential degradation process of plastic waste to generate NRE. This study aims to examine the effectiveness of the hydrothermal process in breaking down bulky raw materials and the role of zeolite as a catalyst to upgrade the quality of hydrochar as a novel solid fuel by evaluating the essential parameters through proximate and ultimate analysis.  The addition of zeolite in the hydrothermal process can increase the water content, ash content, and volatile matter and slightly decrease the calorific value and fixed carbon. The condition to obtain the best characteristics was temperature of 220 oC and the addition of 20 % zeolite.
Co-Authors Ambar Pertiwiningrum Diananto Prihandoko Endhy Kesuma Hirofumi Hinode Indra Perdana Kusumawardhani, Eka M. Prasetya Kurniawan Melly Mellyanawaty Nasirudin Nasirudin Primanda Kiky Widyaputra Putra, Leonardus Sandy Ade Putranty Widha Nugraheni Sang Kompiang Wirawan Wildan Habibi Wiratni Budhijanto