Enhancement of methane production in anaerobic digestion process: A review

Currently, due to the rapid growth of urbanization and industrialization in developing countries, a large volume of wastewater is produced from industries that contain chemicals generating high environmental risks affecting human health and the economy if not treated properly. Consequently, the development of a sustainable low-cost wastewater treatment approach has attracted more attention of policymakers and scientists. The present review highlights the recent applications of biochar in removing organic and inorganic pollutants present in industrial effluents. The recent modes of preparation, physicochemical properties and adsorption mechanisms of biochar in removing organic and inorganic industrial pollutants are also reviewed comprehensively. Biochar showed high adsorption of industrial dyes up to 80%. It also discusses the recent application and mechanism of biochar-supported photocatalytic materials for the degradation of organic contaminants in wastewater. We reviewed also the possible optimizations (such as the pyrolysis temperature, solution pH) allowing the increase of the adsorption capabilities of biochar leading to organic contaminants removal. Besides, increasing the pyrolysis temperature of the biochar was seen to lead to an increase in its surface area, while it decreases their amount of oxygen-containing functional groups, consequently leading to a decrease in the adsorption of metal (loid) ions present in the medium. Finally, the review suggests that more research should be carried out to optimize the main parameters involved in biochar production and its regeneration methods. Future efforts should be also carried out towards process engineering to improve its adsorption capacity to increase the economic benefits of its implementation.

/pdf/mechanisms-and-adsorption-capacities-of-biochar-for-the-7pr051mghb.pdf

Mechanisms and adsorption capacities of biochar for the removal of organic and inorganic pollutants from industrial wastewater

pdf/waste-derived-biochar-for-water-pollution-control-and-lx42hzoggc.pdf

Waste-derived biochar for water pollution control and sustainable development

A critical review on biochar for enhancing biogas production from anaerobic digestion of food waste and sludge

Achievements and perspectives of anaerobic co-digestion: A review

The challenges of anaerobic digestion and the role of biochar in optimizing anaerobic digestion

Impact of biochar on the anaerobic digestion of citrus peel waste.

A number of policy mechanisms have driven the development of a circular economy in organic waste management. This chapter explores the journey of organic wastes from a waste management problem to a renewable energy solution, and then looks to their future as a viable market alternative to conventional inorganic fertilisers. This transition reflects changes in the wider waste policy landscape with a shift from waste management to resource recovery—a viewpoint that is to become increasingly important as the UK and EU look to pursue circular economy strategies. Producing alternative fertilisers from bioenergy by-products provides a neat principle for returning nutrients to soils and closing the loop. However, myriad barriers make this challenging from regulatory viewpoints. Regulations are necessarily risk-conservative, yet arguably innovation-prohibitive. This chapter will explore the challenges that may arise from possible conflicts in regulations, and seeks to establish a way forward for the entry of bioenergy by-products into the circular economy.

From bioenergy by-products to alternative fertilisers:pursuing circular economy

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The challenges of anaerobic digestion and the role of biochar in optimizing anaerobic digestion

Impact of biochar on the anaerobic digestion of citrus peel waste.

From bioenergy by-products to alternative fertilisers:pursuing circular economy