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Potential of Sugarcane as a Renewable Source of Energy in Bangladesh-an Assessment

S. M. I. Hossain
Assistant Agricultural Engineer
Sugarcane Research and Training Institute, Ishurdi, Pabna, Bangladesh.

M. Abdullah
Senior Scientific Officer
Farm Machinery & Post-Harvest Process Engineering Division, BangladeshAgricultural Research Institute, Joydebpur, Gazipur, Bangladesh.

M. M. Huq
Associate Professor
Department of Farm Power & Machinery, Bangladesh Agricultural University,Mymensingh-2202, Bangladesh.

M. A. Zaman
Associate Professor
Department of Farm Power & Machinery, Bangladesh Agricultural University,Mymensingh-2202, Bangladesh.

Abstract/ Executive Summary:

The relevant information regarding production of sugarcane, sugar and its by-products in Bangladesh were collected from different sources. 'The energy potential of sugar and the by-products of sugarcane were computed and analyzed. Based on ten years data from 1981 to 1990, the average annual production of sugarcane is 6.97 × 106 tons and the average annual not energies productivity of this sugarcane is 24.7764 × 109 MJ of which 22.82 × 109 MJ is from biomass (bagasse + leaves & tops) and 1.9537 × 109 MJ is from molasses, These energy obtainable from biomass and molasses may be used commercially for the production of electricity and motor fueI to minimize the energy crisis of the country and to reduce the dependence on foreign grants for energy production systems.

Keywords: Sugarcane, Biomass, Renewable energy

Location: Ishurdi, Pabna, Bangladesh.

Start Date: 01-01-1981

End Date: 31-12-1990

Program Area: Resource Development and Management

Non-commodity: Performance

Objectives:

To explore sugarcane (sugar and sugarcane by-products) as the alternate energy production source to save valuable foreign currency of the country.

Methodology:

Ten years' data (from 1981 to 1990) on the production of sugar and the by-products of sugarcane has been collected from 16 sugar mills of the country. These data were used to get actual recovery of sugar, bagasse, molasses and alcohol on percent cane basis. The production of sugar, molasses and bagasse in the country can be estimated on the basis of the percentage recovery of the products in the mills. The average production of leaves and tops is assumed to be 30% of the cane. The estimate of alcohol production is based on the fact that there is 224 liters of a!cohol in each ton of molasses and the specific weight of alcohol is 0.80 kg/L. The energy content of bagasse, leaves and alcohol has been calculated based on their average annual production and their average calorific values taken from different sources. Calculations were made according to the following formulations using BASIC programming in a personal computer. Let W_sc = Annual average production of sugarcane, metric tons. Then the weight of the product, W_p =W_sc × 1000 × (X / 100) ……(1); The production of alcohol (Walc liters) from molasses can be estimated as follows. W_alc = W_sc × (X/100) × 224 … (2); Let H = calorific value of the product in KJ/kg. Then the energy content of the product in MJ and kWh is given by the eqn (3) and eqn (4) respectively. E_MJ = W_p × H × 10-3 ……… (3); E_KWH = E_MJ /3.6 …………(4); The net energy available from each product and by-product is the value in eqn (3) Multiplied by the efficiency of the conversion system. The energy content of filter cake and the water has bean neglected in calculating the total energy content of sugarcane.

Source of Information: J. of Agril Mach. & Mech. 1 (1), 1994: 47-52

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Average annual energy productivity of sugarcane based on ten years’ data from 1981 to 1990 is 24.7764 × 109 MJ of which 22.82 × 109 MJ is from biomass and 1.9537 × 109 MJ is from molasses. The biomass energy may be used commercially to minimize the energy crisis of the country and to reduce the dependence on foreign grants for energy production systems.

Knowledge Management: Journal