This study investigates the co-processing of algal biomass and animal waste to synthesize sustainable hydrocarbon biolubricants. By utilizing secondary process waste, the project creates a circular economy loop, significantly reducing reliance on fossil-fuel-derived lubricants while managing biological waste effectively.
The process utilizes hydrothermal liquefaction (HTL) to break down the complex lipids and proteins found in algal residues and animal waste. The resulting bio-crude is then subjected to catalytic hydrodeoxygenation to yield stable, high-viscosity hydrocarbon biolubricants.
This project outlines the optimization of lipid extraction from microalgae residues for the production of biodiesel. Microalgae offer a significantly higher yield of oil per acre compared to traditional terrestrial crops, making them a highly viable alternative for sustainable fuel production.
The process involves cultivating microalgae in bioreactors, harvesting the biomass, and extracting lipids using solvent extraction. The extracted algal oil then undergoes transesterification with methanol in the presence of a catalyst to produce fatty acid methyl esters (biodiesel) and glycerol.
This innovative study combines pectin extracted from waste fruit peels (like banana and orange) with algal biopolymers to create a flexible, durable, and 100% biodegradable leather alternative. This addresses both agricultural waste management and the environmental toxicity associated with traditional animal leather tanning.
The process extracts cellulose and pectin from fruit peels, which are then blended with algal-derived alginate. The mixture is cast into sheets and cross-linked using natural binding agents to form a robust, leather-like matrix that mimics the tensile strength of animal hide.
After primary extraction of lipids for biofuels, algal residues often go to waste. This research demonstrates how to upcycle that secondary residue, leveraging its high carbon and carbohydrate content as a sustainable fermentation medium to produce high-value platform chemicals.
The residual algal biomass is subjected to dilute acid hydrolysis to break down complex carbohydrates into fermentable sugars. These sugars are then utilized as a carbon source in microbial fermentation to yield organic acids and alcohols, replacing petroleum-based chemical precursors.
