Utilization of spent K-cups for crude bio-oil production | 55223
Journal of Fundamentals of Renewable Energy and Applications

Journal of Fundamentals of Renewable Energy and Applications
Open Access

ISSN: 2090-4541

Utilization of spent K-cups for crude bio-oil production

4th Annual Congress and Expo on Biofuels and Bioenergy

April 27-28, 2017 Dubai, UAE

Qaun (Sophia) He

Dalhousie University, Canada

Scientific Tracks Abstracts: J Fundam Renewable Energy Appl

Abstract :

Statement of the Problem: K-cup is a popular single-serve coffee brewing system in North-America. With the growing popularity, the waste produced from this ├ó┬?┬?convenient├ó┬?┬Ł process, referred to as spent K-Cups, has raised concern over their potential environmental impact, and thus disposal and/or utilization have attracted increasing attention. Methodology & Theoretical Orientation: Hydrothermal liquefaction is a thermochemical process for the transformation of biomass or organic waste into liquid biofuels under reaction conditions of temperature and pressure in sub-/supercritical water or organic solvents. In this study, spent K-Cups were liquefied to crude bio-oil in water-ethanol mixture of 50/50 (v/v). Findings: The optimum reaction conditions for maximizing crude bio-oil yield were determined: temperature of 276├?┬░C, reaction time of 3 min and solvent/feedstock mass ratio of 11:1, giving the crude bio-oil yield of 60.0%. GC-MS and FT-IR helped identify that the volatile compounds in the resulting crude bio-oil were long-chain aliphatic acids, esters and aromatic compounds. The addition of a catalyst, NaOH, promoted the decomposition of feedstock and thus significantly enhanced the bio-oil production and liquefaction efficiency. However, the addition of acidic catalyst, H2SO4 showed a negative impact on the liquefaction process, decreasing the crude bio-oil yield. Conclusion & Significance: This study offered not only a viable route for the production of crude bio-oil and also an effective approach for waste management.

Biography :

Qaun (Sophia) He has her expertise in the development of biofuels from low value biomass and organic waste. Her research interests include: 1) Biodiesel synthesis and application in non-energy sectors; 2) Hydrothermal liquefaction of biomass; 3) Catalyst development and application; and 4) Development of oilbased preservatives for wood treatment.