CNSL- A sustainable marine fuel

CNSL is a bio component used instead of FAME and is a naturally occurring byproduct of the cashew nut industry. It’s a substituted phenol, a low-cost renewable substance, and chemically reactive.
Competition for Fatty Acid Methyl Esters (FAME), a traditional component of biodiesel, from the aviation and road transportation sectors have resulted in some shipowners resorting to adopt more readily available CNSL blends as biofuels for their vessels.
Properties of CNSL seemed to conform with the ISO 8217:2012 standard for marine distillate and marine residual fuels.
Though blending 100% CNSL will reduce its high acid number, reactivity and potassium levels while increasing energy content, the operation may increase sulphur, cold-flow and sediment potential issues instead.
CNSL blends can also significantly reduce hydrocarbon, CO/CO2 and smoke emissions, although they raise NOx emissions slightly.
UECC(United European Car Carriers) is collaborating with the UK’s maritime advisory organization Lloyd’s Register FOBAS, Finnish engine manufacturer Wartsila, and Dutch biofuel supplier ACT Group to critically assess and evaluate a CNSL-based biofuel.
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