Microalgae-mediated wastewater treatment for biofuels production: A comprehensive review.

The growing world population, rapid industrialization, and intensive agriculture have increased environmental impacts such as wastewater discharge and global warming. These threats coupled the deficiency of fossil fuel and the rise in crude oil prices globally cause serious social, environmental and economic problems. Microalgae strains can withstand the harsh environments of modern industrial and municipal wastes.

Enhanced anaerobic digestion performance by two artificially constructed microbial consortia capable of woody biomass degradation and chlorophenols detoxification.

Catalpa sawdust (CSW) is a promising biomass-based biofuel. However, the complex lignocellulosic structure limits its efficient utilization in biorefinery applications. It is even more so when chlorophenols (CPs), highly toxic organic substances widely used as wood preservatives, are present.

Construction of novel microbial consortia CS-5 and BC-4 valued for the degradation of catalpa sawdust and chlorophenols simultaneously with enhancing methane production.

This study might be the first to explore the novel constructed microbial consortia CS-5 and BC-4 for enhancing methane (CH) production during anaerobic digestion (AD) with simultaneous degradation of catalpa sawdust and chlorophenols (CPs). Significant reduction in cellulose, hemicellulose and lignin contents was achieved after the biodegradation of catalpa sawdust for 15 days by CS-5 and BC-4, with a total weight loss of 69.2 and 56.

Spent coffee enhanced biomethane potential via an integrated hydrothermal carbonization-anaerobic digestion process.

This study reports the implications of using spent coffee hydrochar as substrate for anaerobic digestion (AD) processes. Three different spent coffee hydrochars produced at 180, 220 and 250 °C, 1 h residence time, were investigated for their biomethane potential in AD process inoculated with cow manure. Spent coffee hydrochars were characterized in terms of ultimate, proximate and higher heating value (HHV), and their theoretical bio-methane yield evaluated using Boyle-Buswell equation and compared to the experimental values.