Navegando por Autor "Setiawan, Adi"

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Converting Arabica Coffee Parchment into value added products: Technical and Economic Assessment
(Universidade Federal de Lavras, 2024-07-29) Setiawan, Adi; Sitepu, Billy B.; Muhammad; Anshar, Khairul; Riskina, Shafira; Nurjannah, Siti; Hakim, Lukman
The coffee processing industry is experiencing a continuous rise in residues due to increased coffee-cherry production. However, the utilization of coffee parchment, which contains toxic compounds, remains limited and requires further investigation. This study aims to convert coffee parchment into biochar for potential use as a raw material for porous carbon material. The research was conducted using a purpose-built pilot-scale reactor. The goal was to address challenges related to operational cost, simplicity in operation, and maintenance, utilizing the Net Present Value (NPV) approach. Results indicated that coffee parchment comprised 34.5% biochar, 42.15% bio-oil, and balanced un-condensable-gas. Additionally, biochar products consisted of 42.02% fixed carbon and 38.63% volatile matter. The pyrolysis equipment designed for coffee parchment showcased economic viability, considering optimized annual operating days and scalability for production.
Converting Arabica Coffee Parchment into value added products: Technical and Economic Assessment
(Editora UFLA, 2024-07-29) Setiawan, Adi; Sitepu, Billy B.; Muhammad; Anshar, Khairul; Riskina, Shafira; Nurjannah, Siti; Hakim, Lukman
The coffee processing industry is experiencing a continuous rise in residues due to increased coffee-cherry production. However, the utilization of coffee parchment, which contains toxic compounds, remains limited and requires further investigation. This study aims to convert coffee parchment into biochar for potential use as a raw material for porous carbon material. The research was conducted using a purpose-built pilot-scale reactor. The goal was to address challenges related to operational cost, simplicity in operation, and maintenance, utilizing the Net Present Value (NPV) approach. Results indicated that coffee parchment comprised 34.5% biochar, 42.15% bio-oil, and balanced un-condensable-gas. Additionally, biochar products consisted of 42.02% fixed carbon and 38.63% volatile matter. The pyrolysis equipment designed for coffee parchment showcased economic viability, considering optimized annual operating days and scalability for production.
The Physical and Chemical Properties of Activated Nanocarbon produced from Robusta (Coffea Canephora) Coffee Pulp under slow pyrolysis method
(Universidade Federal de Lavras, 2023-01-09) Nurmalita, Nurmalita; Raihan, Raudhatul; Jalil, Zulkarnain; Nur, Syahrun; Setiawan, Adi
This study examines the physical and chemical properties of nano-activated carbon obtained from Robusta coffee pulp. It also examines the potential use of Robusta coffee pulp biomass as a raw material for hydrogen storage. In this investigation, the dried coffee pulp samples were carbonized using the slow pyrolysis method at temperatures of 400°C and 500°C. A biochar product was obtained and activated using NaOH and ZnCl2 solutions. The analysis results Fourier Transform Infra-Red (FTIR) suggested that both carbonization and activation processes with NaOH or ZnCl2 solutions were unable to removed the caffeine content in coffee pulp. The Differential Calorimetric Analysis/Thermogravimetric Analysis (DSC/TGA) indicated that coffee pulp carbonization reached optimality within the temperature range of 400 to 500°C. Furthermore, the Scanning Electron Microscopy/Energy Dispersive X-ray Spectroscopy (SEM/EDS) and N2-adsorption isothermal analysis showed that the surface pores of activated carbon had a honeycomb-like structure with a size greater than 0.7 nm which is applicable for hydrogen storage material.