The environmental problems caused by industrial pollutants and global warming are on the rise. There is a need to develop a technology for reducing harmful pollutants. The co-combustion is getting serious attention by the scientists regarding its key facets to reduce the environmental pollutants. Its function is based on utilization of biomass with coal. In this work different types of biomass were used with coal samples to identify the suitable methodology. The biomass resource fulfills the requirement with reducing environmental pollutants and overcome energy crises. The ratios of biomass with coal samples were analyzed using stack gas analyzer. The banana tree waste (BTW) was found to be effective for reducing CO2 and CO emission. While, Cow dung manure (CDM) was found to be efficacious to decrease NOx. LC 80%+BTW 20% for SO2 and CDM for NO. To conclude, CDM and BTW decreases the emissions keeping blending ratio 80:20 with lignite coal to biomass in co-combustion respectively.

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The hydrogen possesses high calorific value and it is necessary to utilize this energy due to current energy based resources depletion. It elaborates the paramount importance of hydrogen as a future renewable fuel. There are used different techniques for hydrogen storage and its transportation. In transportation techniques, there are high pressure compression and liquefaction from pipelines. On the other hand, there is developed an optimized model which fulfills the challenges by regarding hydrogen transportation with its low cost. The prominent practiced hydrogen storage techniques are; Adsorption, Casting on alloys, Absorption and Metal hydride reactor. These techniques can store hydrogen from 1.28 wt. % to 19.6 wt.%. Hence, the need to transport hydrogen through storage has become possible by attaining the challenges. It is an unprecedented and welcomed result declaration with highly precise evaluation

Recently, the depletion of fossil fuel reserves and the harmful environmental effects caused by burning fossil fuels have signified the supreme importance of utilizing sustainable energy reserves such as geothermal and solar energies. The advancement of the Organic Rankine Cycle as a clean energy generation path by researchers has gained momentous demand for its commercialization. The sole Organic Rankine Cycle can produce a large amount of energy in contrast to other power production cycles. To make this clean energy recovery sustainable, liquefied natural gas cold energy can be utilized through regasification to integrate the Organic Rankine Cycle with the anti-sublimation carbon dioxide capture process, merging the biogas setup. Liquefied natural gas cold energy recovery has paramount importance with aspects of energy economy and environment preservation. Liquefied natural gas regasification in shell and tube heat exchangers poses a minimal freezing risk and is high duty. Anti-sublimation of biogas is an energy-intensive process. It can be materialized from liquefied natural gas cold energy implementation through the Organic Rankine Cycle by maintaining cryogenic temperatures there. In this situation, greenhouse gas emissions can be minimized. The simulation analysis is performed based on thermodynamic and techno-economic assessments of the poly-generation energy systems. It is proved to be useful in conducting by regulating different working fluids. The optimum electric power generated is 2492 MW. While the optimum net present value, energy efficiency, and exergy efficiency of this proposed energy system are 19.5, 57.13%, and 76.20%, respectively. The governmental authorities and environmental protection can benefit from this scientific research work to create an environmentally friendly atmosphere and energy for contemporary society.