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Biofuels, biodiesel and biohydrogen production using bioprocesses. A review

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Abstract

Energy demands, pollution and global warming induced by globalization are rising, thus calling for alternative sources of energies. In particular, biofuels are increasingly used for transportation, electric power and heat energy generation. Biofuels can mitigate greenhouse gas emissions by up to 50%. Biofuels are produced from organic matter and waste such as dry lignocellulose, algae, yeast, restaurant greases, food grain, non-food grain and animal fats. Biofuel from crop residues can be promoted by government subsidies to reduce the fuel price and meet the requirement of industries, transportation and agricultural sectors.

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Abbreviations

ACP:

Acyl carrier protein

BTL:

Biomass to liquid

BTUs:

British thermal units

Cas:

CRISPR associated

CCS:

Carbon capture and storage

CHP:

Carbon heat and power

CO2 :

Carbon dioxide

CSLF:

Cellulose solvent-based lignocellulose fractionation

CRISPR:

Clustered regularly interspaced short palindromic repeats

DME:

Dimethyl ether

DOE:

Department of Energy

ER:

Endoplasmic reticulum

EtOH:

Bioethanol

eq/M.J:

Equivalent per megajoule

2-EH:

2-Ethylhexanol

FAs:

Fatty acids

FT:

Fischer–Tropsch

g/g:

Gram by gram

Gt:

Gigatonnes

GHGs:

Greenhouse gases

H2 :

Biohydrogen

H2O:

Water

H2S:

Hydrogen sulfide

IBPGM:

Integrated biomass pyrolysis, gasification and methanol synthesis

KOH:

Potassium hydroxide

LHV:

Lower heating value

MEC:

Microbial electrolysis cell

MeOH:

Methanol

MEF:

Microbial electrolysis cell

MFC:

Microbial fuel cell

Mo/Pt/WOx :

Molybdenum/platinum/tungsten oxide

MT:

Million tonnes

Mteo:

Million tonnes of oil equivalent

NaOH:

Sodium hydroxide

NER:

Net energy ratio

NOX :

Nitrogen oxides

NMB:

National mission on biodiesel

OPEFB:

Oil palm empty fruit bunch

PAHs:

Polycyclic aromatic hydrocarbons

PBRs:

Photo-bioreactors

PEM:

Polymer electrolyte membrane

PS:

Photo-system

PoGA15A:

Starch-digesting glucoamylase

S. cerevisiae :

Saccharomyces cerevisiae

SNG:

Synthetic natural gas

SPSC01:

Self-flocculating yeast strain

SO2 :

Sulfur dioxide

SO3 :

Sulfur trioxide

SSF:

Separate hydrolysis and fermentation

TAG:

Triacylglycerol

w/v:

Weight by volume

US:

United States

USA:

United States of America

XUSE:

Xylose-utilizing engineered S. cerevisiae strain

v/v:

Volume by volume

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Correspondence to Nagaraj P. Shetti or Kakarla Raghava Reddy.

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The authors declare that there are no conflicts of interest.

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Srivastava, R.K., Shetti, N.P., Reddy, K.R. et al. Biofuels, biodiesel and biohydrogen production using bioprocesses. A review. Environ Chem Lett 18, 1049–1072 (2020). https://doi.org/10.1007/s10311-020-00999-7

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  • DOI: https://doi.org/10.1007/s10311-020-00999-7

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