MATEC Web Conf.
Volume 164, 2018The 3rd International Conference on Electrical Systems, Technology and Information (ICESTI 2017)
|Number of page(s)||13|
|Published online||23 April 2018|
Characterisation of Arabica Coffee Pulp - Hay from Kintamani - Bali as Prospective Biogas Feedstocks
Waste Laboratory of University Muhamadiyah of Malang, Jl. Raya Tlogomas No. 246 Malang, 65114, Indonesia
2 Future Industry Institute and School of Engineering, University of South Australia, Mawson Lakes SA 5095, Adelaide, Australia.
3 Technical Implementation Unit for Development of Chemical Engineering Processes, Indonesian Institute of Sciences, 55861, Yogyakarta, Indonesia
4 Faculty of Agrotechnology, Merdeka University of Madiun, Jl. Serayu No. 79 Madiun 63131, Indonesia
5 Faculty of Agricultural and Animal Science, University Muhamadiyah of Malang, Indonesia
6 Departement of Biotechnology, Faculty of Engineering, International Islamic University Malaysia (IIUM), Gombak, 50728 Kuala Lumpur, Malaysia
7 Plant Production and Biotechnology Division, PT Sinarmas Agroresources and Technology Tbk., Sinar Mas Land Plaza, 2nd Tower 10th Fl. Jl. M.H. Thmrin No. 51, Jakarta 10350, Indonesia
8 Department of Renewable Energy Engineering, Universitas Prasetiya Mulya, Tangerang, Banten 15339, Indonesia
9 Institute of Energy and Power Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
* Corresponding author: email@example.com
The huge amount of coffee pulp waste is an environmental problem. Anaerobic fermentation is one of the alternative solutions. However, availability of coffee pulp does not appear for year-round, whereas biogas needs continuous feedstocks for digester stability. This research uses coffee pulp from Arabica Coffee Factory at Mengani, Kintamani, Bali–Indonesia. The coffee pulp was transformed into coffee pulp-hay product by sun drying for preservations to extend the raw materials through the year. Characterization of coffee pulp-hay was conducted after to keep for 15 mo for review the prospect as biogas feedstocks. Several parameters were analyzed such as C/N ratio, volatile solids, carbohydrate, protein, fat, lignocellulose content, macro-micro nutrients, and density. The review results indicated that coffee pulp-hay is prospective raw material for biogas feedstock. This well-proven preservation technology was able to fulfill the continuous supply. Furthermore, some problems were found in the recent preliminary experiment related to the density and fungi growth in the conventional laboratory digester. Further investigation was needed to implement the coffee pulp – hay as biogas feedstocks.
Key words: Environmental problems / Floating feed / Hay technology / Low density feed / Preservation feedstocks / Waste to energy
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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