Title

Production Of Hydrogen And Biofuels Via Thermochemical Processing Of Fast-Growing Aquatic Biomass

Keywords

Aquatic Biomass; Biooil; Hydrogen; Pyrolysis

Abstract

The growing demand for clean and sustainable transportation fuels is driving the worldwide R&D efforts aiming at converting biomass to hydrogen and liquid biofuels. Of particular practical interest is the utilization of fast-growing aquatic biomass species that promise much higher products yields per unit of area compared to terrestrial biomass. In this paper, the experimental studies of thermochemical conversion (pyrolysis and gasification) of several aquatic biomass species: microalgae, Lemna minor (duckweed) and azolla, to hydrogen and biofuels are presented. Pyrolysis of the tested samples of aquatic biomass in the range of temperatures 400-700oC yielded pyrolysis gas, biooil and biochar with the distribution of pyrolysis products depending on temperature, residence time and nature of the feedstock. With all the samples, higher process temperature resulted in higher yields of pyrolysis gas and biochar at the expense of biooil. The concentration of hydrogen in duckweed pyrolysis gas increases with temperature and at 700oC it reaches 25 vol.% in raw gas and 42 vol.% after CO2 removal, and it could be further increased to 99 vol.% using off-the-shelf gas separation technology. The analysis of biooil samples indicated that they can be converted to petroleum-equivalent biofuels through existing technological routes such as catalytic hydrodeoxygenation.

Publication Date

1-1-2014

Publication Title

20th World Hydrogen Energy Conference, WHEC 2014

Volume

3

Number of Pages

1503-1504

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

84924871528 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84924871528

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