Lignin from termite frass: a sustainable source for anticorrosive applications

Abstract The present study reports a sustainable source of lignin, from termite frass. Lignin was extracted using Klason’s method and subjected to polarization studies check the inhibition efficiency measured electrochemical performance coated sample on carbon steel impedance spectroscopy. anticorrosive property determined in simulated corrosive environment (0.1 M NaOH 0.5 NaOH). morphological analysis surface both bare metal lignin-coated ones, before after exposure environment, recorded atomic force microscopy (AFM), scanning electron (SEM), energy-dispersive X-Ray spectroscopy (EDX). lignin showed maximum at 600 ppm solution. Moreover, exhibited about 70% corrosion as by potentiodynamic AFM SEM analyses further corroborated protection when with lignin. Hence, suggests frass biological suitable for applications. Graphic abstract