ABSTRACT
The two most crucial issues facing the world today are environmental pollution and water scarcity. In order to address these two crucial issues, the current investigation has made significant efforts to produce potable water from seawater using thermal and solar desalination methods in tandem with reducing hazardous emissions from diesel engines by blending diesel fuel with Multiwalled Carbon Nanotubes (MWCNT). Totally six stages were adopted to carry out the current research work. Both thermal and solar desalination experimental setups were designed, constructed, and eventually placed in the exhaust side of the diesel engine during the first stage. The reference readings were obtained in a diesel by using neat diesel along with thermal and solar desalination setups in the second stage. In the third stage, MWCNTs (50 ppm/litre and 100 ppm/litre) were combined with the diesel fuel (with or without water content) in the fourth stage. In the fifth stage, stability and fuel characteristics were assessed in accordance with ASTM standards for all prepared fuels. The performance and emission characteristics of each of the stable MWCNT blended additive fuels were examined in a diesel engine during the sixth stage. It was discovered that the fuels blended with MWCNT had better performance and lower emissions compared to that of neat diesel fuel. This was ascribed due to the MWCNT’s presence in the fuel, which has led to improved fuel properties and played a vital role in enhancing performance and reduced emissions in diesel engine. On the other hand, on accustoming the thermal and solar desalination setups, sufficient amounts of 1.75 litres of potable water (from seawater) were also produced in addition to the performance and emission results of this investigation (on utilizing waste heat from exhaust gases from the diesel engine and solar energy convincingly).