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Advantages of Bio-CNG | disadvantages of Bio-CNG

This page covers advantages and disadvantages of Bio-CNG and its basics. It mentions benefits or advantages of Bio-CNG and drawbacks or disadvantages of Bio-CNG.

What is Bio-CNG?

Transport sector is one the major contributors of green house gases on the planet. It is also used for many other applications such as electricity, street lighting, as domestic fuel for cooking, industrial plants and more. If it is compressed, it can replace compressed natural gas for use in vehicles.

Bio-CNG process

There are various sources of biomass which is used for the production of biogas. The common sources include agricultural residues, food waste, cow dung, poultry waste, organic municipal waste, bio-waste from industries etc. The figure depicts the entire process of bio-CNG generation and its distribution for various applications.

Biogas is a clean and efficient fuel. Raw biogas is a mixture of following constituents. The chief constituent is methane comprising of 65%.
• Methane (CH4)
• Carbon Dioxide (CO2)
• Hydrogen (H2)
• Hydrogen Sulphide (H2S)

Raw biogas can be converted into different automobile natural gas (i.e. bio-CNG) or compressed biogas (CBG), gasoline, syngas and liquefied biogas.

Benefits or advantages of Bio-CNG

Following are the benefits or advantages of Bio-CNG:
➨It offers high calorific value.
➨It is clean fuel. it helps in controlling air pollution.
➨It does not produce any residue.
➨It does not produce any smoke.
➨It is non polluting.
➨It is very economical.
➨It reduces burden on forests and fossil fuels.
➨It can be easily supplied through pipe lines to house holds as shown.
➨It offers convenient ignition temperature and hence easy to burn.
➨It offers cost savings over conventional fuels.
➨It is similar to natural gas in terms of composition and properties.
➨More bio-mass availability will lead to more production of bio-CNG.
➨It can help avoid problems of solid waste being dumped in landfills.

Drawbacks or disadvantages of Bio-CNG

Following are the drawbacks or disadvantages of Bio-CNG:
➨Using bio-CNG without proper purification can lead to erosion of metal parts in vehicles.
➨Purity of bio-CNG reserves can be tracked using software and data analysis tools. This increases cost.
➨Global adoption of bio-CNG depends on several economic, environmental and other technical factors.
➨Capital cost for installation of bio-CNG plants is high.
➨Sources for feed materials are not consistent.
➨Refuelling stations are more complicated than conventional ones since high pressure is required to be maintained for certain components.
➨Due to short driving range, additional fuel cylinders may be required for extending the range.
➨There is shortage of skilled professionals for the production process in this domain.
➨There is lack of proper standards and regulations in many countries for the installation and operation/maintenance.

Conclusion: From the above plethora of merits, Bio-CNG can be used as Biogas in revolutionising green transportation. It will drive the growth of bio-CNG vehicles, buses and trucks.

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