scholarly journals Anaerobic digestion of microalgal biomass for bioenergy production, removal of nutrients and microcystin: current status

2021 ◽  
Author(s):  
M. Veerabadhran ◽  
D. Gnanasekaran ◽  
J. Wei ◽  
F. Yang
Keyword(s):  
Anaerobic Digestion ◽  
Current Status ◽  
Microalgal Biomass ◽  
Bioenergy Production

Waste biorefineries — integrating anaerobic digestion and microalgae cultivation for bioenergy production

2018 ◽  
Vol 50 ◽  
pp. 101-110 ◽  
Author(s):  
Yi-di Chen ◽  
Shih-Hsin Ho ◽  
Dillirani Nagarajan ◽  
Nan-qi Ren ◽  
Jo-Shu Chang
Keyword(s):  
Anaerobic Digestion ◽  
Microalgae Cultivation ◽  
Bioenergy Production

scholarly journals Management strategies for anaerobic digestate of organic fraction of municipal solid waste: Current status and future prospects

2019 ◽  
Vol 37 (1_suppl) ◽  
pp. 27-39 ◽  
Author(s):  
Mohanakrishnan Logan ◽  
Chettiyappan Visvanathan
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Management Practice ◽  
Management Strategies ◽  
Land Application ◽  
Current Status ◽  
Organic Fraction ◽  
Biogas Yield ◽  
Treatment Technologies

Anaerobic digestion has emerged as the preferred treatment for organic fraction of municipal solid waste. Digestate management strategies are devised not only for safe disposal but also to increase the value and marketability. Regulations and standards for digestate management are framed to address the pollution concerns, conserve vulnerable zones, prevent communicable diseases, and to educate on digestate storage and applications. Regulations and the desired end uses are the main drivers for the enhancement of digestate through pretreatment, in vessel cleaning, and post-digestion treatment technologies for solid and liquid fractions of digestate. The current management practice involves utilization of digestate for land application either as fertilizer or soil improver. Prospects are bright for alternative usage such as microalgal cultivation, biofuel and bioethanol production. Presently, the focus of optimization of the anaerobic digestion process is directed only towards enhancing biogas yield, ignoring the quality of digestate produced. A paradigm shift is needed in the approach from ‘biogas optimization’ to ‘integrated biogas–digestate optimization’.

scholarly journals To What Extent Is Manure Produced, Distributed, and Potentially Available for Bioenergy? A Step toward Stimulating Circular Bio-Economy in Poland

Energies ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 6266
Author(s):  
Paria Sefeedpari ◽  
Rafał Pudełko ◽  
Anna Jędrejek ◽  
Małgorzata Kozak ◽  
Magdalena Borzęcka
Keyword(s):  
Anaerobic Digestion ◽  
Organic Fertilizer ◽  
Material Balance ◽  
Nutrient Content ◽  
Environmental Cost ◽  
Bioenergy Production ◽  
Level Data ◽  
Key Driver ◽  
Mechanical Separation ◽  
Circular System

Bioenergy production from animal waste can be a key driver to achieving bio-economy goals. Developing a bio-economy sector could help to create opportunities for a circular system where not only people and the planet will be benefited, but it will also provide economic profitability to farmers, especially in the post-Covid period. To this end, manure production, its nutrient content, and bioenergy potential were estimated, along with their spatial distribution in the Lubelskie province, Poland. Farm-level data were processed and aggregated at the municipality level. Material balance equations were used to calculate the theoretical potential of livestock manure and bioenergy for different use scenarios: (1) Baseline (BC): direct manure application to land, which was compared against (2) Anaerobic Digestion (AD): anaerobic digestion to biogas with digestate returned to the fields (3) AD + Separation (AD + Sep): mechanical separation followed by anaerobic digestion, and (4) Surplus + AD: surplus manure (after application to the fields) is sent to anaerobic digestion. Manure, biogas, electricity, and thermal energy production of the AD scenario were estimated to be 7.5 Mt y−1, 378 Mm3 y−1, 907 GWe y−1, and 997.8 GWth y−1, respectively. The scenario, including mechanical separation followed by anaerobic digestion (AD + Sep), contributed to avoiding emissions to the largest extent (1 Mt CO2 eq), whereas AD outperformed the others in avoiding costs of fertilization. According to the estimated potential and the environmental cost-effectiveness of AD, new plants can be established that will recycle manure through bioenergy production, and, subsequently, the digestate can be applied as organic fertilizer, closing the nutrients cycle.

On-site CO2 bio-sequestration in anaerobic digestion: current status and prospects

2021 ◽  
pp. 125037
Author(s):  
Suyun Xu ◽  
Zihao Qiao ◽  
Liwen Luo ◽  
Yongqi Sun ◽  
Jonathan Woon-Chung Wong ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Current Status
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