Energy use analysis of selected palm-kernel oil mills in south western Nigeria

Energy use patterns and utilisation efficiencies in 40 factories producing palm kernel oil (PKO) in southwestern part of Nigeria were studied. The factories were stratified into small, medium and large scale categories based on the mode of operations and production capacities. Questionnaires were administered on the factories to obtain historical data on petrol, diesel and electricity consumption and PKO production outputs for seven years (1998–2004). Energy use efficiency indicators employed include: energy intensity (EI), energy cost per unit product (EC/P), energy ratio (ER), food energy ratio (FER) and percentage oil yield by weight. Results of the study indicated that averagely, 0.58, 0.53 and 0.74GJ/103l of PKO were needed in the small, medium and large PKO factories, respectively. The average food energy ratios in the small, medium and large mills are 2.48, 2.53 and 2.14, respectively. The corresponding values of PKO conversion ratio are 0.43, 0.50 and 0.35. Electrical energy consumption in medium and large mills was lower than thermal energy due to irregularity and decline in electricity supply from the national grid. The results of the study has provided required baseline information needed for budgeting, comparison of yearly energy consumption, forecasting energy requirements and planning expansion in PKO factories.

[1]  S. O. Jekayinfa.  ENERGETIC ANALYSIS OF POULTRY PROCESSING OPERATIONS , 2007 .

[2]  M. O. Ilori,et al.  Biogas energy use in Nigeria: current status, future prospects and policy implications , 2001 .

[3]  C. E. Goering,et al.  Energy Accounting for Eleven Vegetable Oil Fuels , 1982 .

[4]  A. O. Ajayi.  Emerging Roles for Extension in Promoting Sustainable Rural Environment: Lessons from Food Processing Cottage Industries and Their Wastes in Rural Oyo State, Nigeria , 2004 .

[5]  V. P. Chaudhary,et al.  Auditing of Energy Use and Output of Different Cropping Systems in India , 2006 .

[6]  Rolando A. Flores,et al.  Quantification and characterization of food processing wastes/residues , 1999 .

[7]  H. Ozturk,et al.  Energy Analysis of the Tillage Systems in Second Crop Corn Production , 2006 .

[8]  S. O. Jekayinfa,et al.  Development of equations for estimating energy requirements in palm-kernel oil processing operations , 2007 .

[9]  Bobboi Umar,et al.  Comparison of Energy Use Patterns in Maiduguri and Yobe Flour Mills, Nigeria , 2006 .

[10]  S. O. Jekayinfa.  Energy Consumption Pattern of Selected Mechanized Farms in Southwestern Nigeria , 2006 .

[11]  Ilse Van Zyl.  Ekurhuleni's Rietfontein waste disposal site expanded : waste management , 2003 .

[12]  Kemal Esengün,et al.  Energy use and economical analysis of sugar beet production in Tokat province of Turkey , 2007 .

[13]  S. O. Jekayinfa,et al.  Estimating energy requirement in cashew (Anacardium occidentale L.) nut processing operations , 2006 .

[14]  V. P. Chaudhary,et al.  Energy Assessment of Different Weed Management Practices for Rice-Wheat Cropping System in India , 2006 .

[15]  Vilas M. Salokhe,et al.  Energy Consumption Analysis for Selected Cropsin Different Regions of Thailand , 2006 .

[16]  J. Akinbami,et al.  Urban household energy use patterns in Nigeria , 1995 .

[17]  Bobboi Umar.  Comparison of Manual and Manual-cum-Mechanical Energy Uses in Groundnut Production in a Semi-arid Environment , 2003 .

[18]  Martin H. Bender.  Energy in Agriculture: Lessons from the Sunshine Farm Project , 2002 .

[19]  S. O. Jekayinfa,et al.  Energy requirements for palm‐kernel oil processing operations , 2004 .

[20]  Rolando A. Flores,et al.  Proximate analysis of food service wastes , 1995 .

[21]  S. O. Jekayinfa,et al.  The Energy Potentials of Some Agricultural Wastes as Local Fuel Materials in Nigeria , 2005 .

[22]  S. O. Jekayinfa,et al.  Analysis of energy usage in the production of three selected cassava-based foods in Nigeria , 2007 .

[23]  K. A. Adebiyi,et al.  An appraisal of maintenance practice in food industries in Nigeria , 2004 .

[24]  A. O. Adegbulugbe,et al.  Potential of agroforestry techniques in mitigating CO2 emissions in Nigeria: some preliminary estimates , 1999 .

[25]  J. O. Olajide,et al.  Performance evaluation of the Strategic Grain Reserve Storage Programme (SGRSP) in Nigeria , 2002 .

[26]  W. G. Madow.  Elementary Sampling Theory , 1968 .

[27]  W. Vergara,et al.  Analysis of Direct Energy Usage in Vegetable Canneries , 1978 .

[28]  D. Pimentel,et al.  Energy Analysis of Sugar Beet Production Under Traditional and Intensive Farming Systems and Impacts on Sustainable Agriculture in Morocco , 2002 .