Our solution allows a cost-effective, sustainable, biodegradable and biocompatible application of aerogels by using cellulose, the most abundant biopolymer on earth. Our aerogels possess high liquid absorption, low thermal conductivity, controlled release properties and high sound absorption useful for a variety of sectors like biomedical, cosmetic, healthcare, food, packaging, thermal insulation in arquitecture, bioremediation, agronomy, etc. In addition, added functionality is possible by attaching hydrophobic and hydrophilic substances.