Physico-chemical characteristics and market potential of sawdust charcoal briquette
Tóm tắt
In the absence of the widespread distribution of modern cooking fuels in developing countries, efforts are being made to utilise biomass residues which abound in most of these countries. This is intended to replace portions of firewood and charcoal and thereby reduce the cutting down of forests for fuel purposes. Briquettes from agro-residues have therefore been promoted as a better replacement to firewood and charcoals for heating, cooking and other industrial applications in both urban and rural communities. This study sought to assess the physico-chemical properties of charcoal briquettes produced in Ghana and also establish demand for and willingness of potential users to substitute charcoal and firewood with a charcoal briquette. A laboratory experiment was conducted to determine the physico-chemical characteristics of the briquettes. This was done prior to the distribution of the briquette to potential users to collaborate their views or otherwise on the handling and burning characteristics of the charcoal briquette. A survey was undertaken a week later using questionnaires to access the willingness of the potential users to use the briquettes. Sixty respondents were purposively selected from households and the hospitality industry for the survey. Results of the physico-chemical assessment of the briquettes were as follows: length (75 to 120 mm), moisture content (5.7% dry basis), density (1.1 g/cm3), ash content (2.6%), fixed carbon (20.7%), volatile matter (71%) and calorific value (4,820 kcal/kg). Responses from the survey indicated that the briquette is easy to ignite, has a long burning time and has good heat output. Respondents also observed that the briquettes did not give off sparks and had less smoke and ash content as compared to the regular charcoal they often used. Finally, 93% of the respondents indicated their willingness to use the briquettes if the price was comparable to charcoal.
Tài liệu tham khảo
Phonphuak N, Thiansem S: Using charcoal to increase properties and durability of fired test briquettes. Constr. Build. Mater. 2012, 29: 612–618.
Rabier F, Temmerman M, Bohm T, Hartmann H, Jensen PD, Rathbauer J, Carrasco J, Fernandez M: Particle density determination of pellets and briquettes. Biomass Bioenergy 2006, 30: 954–963. 10.1016/j.biombioe.2006.06.006
McKendry P: Energy production from biomass (part 1): overview of biomass. Resource Technol. 2002, 83: 37–46.
Emerhi EA: Physical and combustion properties of briquettes produced from sawdust of three hardwood species and different organic binders. Adv. Appl. Sci. Res. 2011,2(6):236–246.
Kemausuor F, Obeng GY, Brew-Hammond A, Duker A: A review of trends, policies and plans for increasing energy access in Ghana. Renew. Sustain. Energy Rev. 2011, 15: 5143–5154. 10.1016/j.rser.2011.07.041
Energy Commission, Ghana: Report on woodfuel use in Ghana: an outlook for the future. (2008). Accessed 18 May 2012 http://new.energycom.gov.gh (2008). Accessed 18 May 2012
Trossero MA: Unasylva Newsletter 211. FAO, Rome; 2002.
Stout BA, Best G: Effective energy use and climate change: needs of rural areas in developing countries. Agric. Eng. Int. 2001, 3: 19.
Amaya A, Medero N, Tancredi N, Silva H, Deiana C: Activated carbon briquettes from biomass materials. Bioresour. Technol. 2007,98(8):1635–1641. 10.1016/j.biortech.2006.05.049
Suhartini S, Hidayat N, Wijaya S: Physical properties characterization of fuel briquette made from spent bleaching earth. Biomass Bioenergy 2011, 35: 4209–4214. 10.1016/j.biombioe.2011.07.002
Wilaipon P: Physical characteristics of maize cob briquettes under moderate die pressure. Am. J. Appl. Sci. 2007, 4: 995–998.
Oladeji JT: Fuel characterization of briquettes produced from corncob and rice husk resides. Pac. J. Sci. Technol. 2010,11(1):101–106.
Styles D, Thorne F, Jones MB: Energy crops in Ireland: an economic comparison of willow and miscanthus production with conventional farming systems. Biomass Bioenergy 2008, 32: 407–421. 10.1016/j.biombioe.2007.10.012
Yang YB, Ryu C, Khor A, Yates NE, Sharifi VN, Swithenbank J: Effect of fuel properties on biomass combustion. Fuel 2005, 84: 2116–2130. 10.1016/j.fuel.2005.04.023
Loo SV, Koppejan J: The Handbook of Biomass Combustion and Co-firing. Earthscan, London; 2008.
ASTM International: ASTM standard E711–87, Standard test method for gross calorific value of refuse-derived fuel by the bomb calorimeter. 2012.http://ia600806.us.archive.org/23/items/gov.law.astm.e711.1987/astm.e711.1987.pdf (2004). Accessed 21 May 2012
Jenkins BM, Baxter LL, Miles TR, Miles TR: Combustion properties of biomass. Fuel Process. Technol. 1998, 54: 17–46. 10.1016/S0378-3820(97)00059-3
Chaney J: Combustion Characteristics of Biomass Briquettes. University of Nottingham, Dissertation; 2010.
Grover PD, Mishra SK, Clancy JS: Development of an appropriate biomass briquetting technology suitable for production and use in developing countries. Energy Sustain. Dev. 1994,1(1):45–48. 10.1016/S0973-0826(08)60015-0
Zaror CA, Pyle PD: The pyrolysis of biomass: a general review. Sadhana Acad. Proc. Eng. Sci. 1982,5(4):269–285.
Aina OM, Adetogun AC, Iyiola KA: Heat energy from value-added sawdust briquettes of Albiziazygia. Ethiopian Journal of Environmental Studies and Management 2009,2(1):42–49.
Wamukonya L, Jenkins B: Durability and relaxation of sawdust and wheat-straw briquettes as possible fuels for Kenya. Biomass Bioenergy 1995,8(3):175–179. 10.1016/0961-9534(95)00016-Z
De Souza F, Sandberg D: Mathematical model of a smoldering log. Combust. Flame 2004, 139: 227–238. 10.1016/j.combustflame.2004.07.009
Kim HJ, Lu GQ, Naruse I, Yuan J, Ohtake K: Modeling combustion characteristics of bio-coal briquettes. J. Energy Resour. Technol. 2001, 123: 27–31. 10.1115/1.1347988
Musa NA: Comparative fuel characterization of rice husk and groundnut shell briquettes. NJREDI 2007,6(4):23–27.
Enweremadu CC, Ojediran JO, Oladeji JT, Afolabi LO: Evaluation of energy potential in husks from soy-bean and cowpea. Sci. Focus 2004, 8: 18–23.
Chaiklangmuang S, Supa S, Kaewpet P: Development of fuel briquettes from biomass-lignite blends. Chiang Mai J. Sci. 2008,35(1):43–50.