Sustainable superhydrophobic lignin-based polyurethane foam: an innovative solution for oil pollutant adsorption
Xinglin Li, Jing Zhang, Hong Liu, Zhiyu Li, Guanfeng Zheng, Ling Zhou, Peng Fu
Abstract
sunlight intensity, the surface temperature of the foam adsorbent rose to 79.7 °C within 350 seconds. The excellent photothermal conversion properties of the foam significantly reduced the viscosity of the surface crude oil, thereby increasing the adsorption rate. In addition, the modified foam adsorbent also demonstrated self-cleaning properties and could be completely degraded after 5 hours of treatment in an alkaline solution. The developed LPUF adsorbent exhibited superior hydrophobicity and oil-water separation capabilities, highlighting its potential for efficient oil pollutant removal, while also offering new avenues for the high-value utilization of renewable resources.