Read e-book online Algal Biorefinery: An Integrated Approach PDF

By Debabrata Das

ISBN-10: 3319228129

ISBN-13: 9783319228129

ISBN-10: 3319228137

ISBN-13: 9783319228136

This publication seriously discusses varied points of algal construction platforms and a number of other of the drawbacks on the topic of microalgal biomass creation, specifically, low biomass yield, and energy-consuming harvesting, dewatering, drying and extraction techniques. those supply a historical past to the cutting-edge applied sciences for algal cultivation, CO2 sequestration, and large-scale program of those systems.

In order to faucet the industrial power of algae, a biorefinery idea has been proposed that can aid to extract greatest merits from algal biomass. This refinery proposal promotes the harvesting of a number of items from the feedstock as a way to make the method economically beautiful. For the previous couple of many years, algal biomass has been explored to be used in numerous items resembling gasoline, agricultural plants, pigments and prescribed drugs, in addition to in bioremediation. to fulfill the massive call for, there was a spotlight on large-scale creation of algal biomass in closed or open photobioreactors. various dietary stipulations for algal development were explored, similar to photoautotrophic, heterotrophic, mixotrophic and oleaginous.

This ebook is aimed toward a large viewers, together with undergraduates, postgraduates, lecturers, strength researchers, scientists in undefined, strength experts, coverage makers and others who desire to comprehend algal biorefineries and in addition preserve abreast of the most recent developments.

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2010). sidered to be capital intensive and are justified only when a fine chemical is to be produced. Closed systems are much more expensive than ponds. However, closed systems require much less light and agricultural land to grow algae. High oil species of microalgae cultured in growth optimized conditions of photobioreactors have the potential to yield 19,000 to 57,000 L of microalgal oil per acre per year. The yield 22 D. Das Fig. 5 Utilization of algal biomass for biohydrogen and biodiesel production.

These divisions of food chain, producing organic material from sunlight, carbon dioxide and water (Wiencke and Bischof, 2012). Macroalgae act as ecological engineers mainly on rocky coasts of the oceans. The muddy and sandy areas have fewer macroalgae, because most of the species cannot anchor there. The production of macrophytes (macroalgae and seagrasses (vascular water plant)) amounts to 5–10 % of the total oceanic production, even though they only cover a minute area of the world’s oceans (Lobban and Harrison, 1997; Wiencke and Bischof, 2012).

They require light and CO2 as energy and carbon sources respectively. Some species, however, are capable of growing heterotrophically by utilizing external carbon sources such as glucose and acetate for carbon and energy. Microalgae cultivation using sunlight energy can be carried out in open or covered ponds or closed photobioreactors, based on tubular, flat plate, or other designs. 4. Due to some operating challenges like overheating, fouling and gas exchange limitations, it is difficult to scale up much beyond approximately 100 m2 for an individual growth unit.

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Algal Biorefinery: An Integrated Approach by Debabrata Das

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