Biogas recovery for sustainable cities: A critical review of enhancement techniques and key local conditions for implementation

Chrispim, Mariana Cardoso; Scholz, Miklas; Nolasco, Marcelo Antunes

doi:10.1016/j.scs.2021.103033

Cited by 28 publications

(5 citation statements)

References 98 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The circular economy is a regenerative system in which inputs, waste of resources, gas emissions, and energy leaks are minimized (Geissdoerfer et al, 2016); sustainable societies must be based on the efficient use of these by-products (Pearlmutter et al, 2020 ). Many cities have implemented measures to promote the circular economy (Chrispim et al, 2021 ); however, these measures generally do not integrate the various aspects involved (organic solid waste, sludge, water, energy) (Paiho et al, 2021 ). For this reason, a link must be established between energy, water, and waste systems to make progress toward the goal of achieving sustainable cities (Wang et al, 2018 ).…”

Section: Resultsmentioning

confidence: 99%

Impact of a methane emission tax on circular economy scenarios in small wastewater treatment plants

Michalovicz¹,

Bilotta

2022

Environ Dev Sustain

View full text Add to dashboard Cite

This paper analyzes the impact of methane emissions taxation on the recovery of the investments required for implementing technologies that use biogas energy in small wastewater treatment plants (WWTPs) in Brazil. It is based on the hypothesis that the adoption of a national methane emission tax policy would encourage small WWTPs to become sustainable power plants. The procedure involved 173 anaerobic plants to analyze: (a) methane production; (b) available useful energy; (c) investments and avoided costs for implementing STHIL system (thermal drying sludge) and motor generator (electricity generation); (d) financial impact for two scenarios (C1: no emissions tax; C2: with tax). Positive environmental and financial results were observed for WWTPs, varying according to the period of time analyzed for both technologies. Investments must be made in cogeneration in anaerobic WWTPs for achieving satisfactory results. Taxation must not be viewed simply as a punitive instrument; on the contrary, it should be seen as a tool to encourage continuous process improvement. The circular economy may support the enlargement of the wastewater collection and treatment system, guaranteeing widespread sanitation conditions in urban areas. However, the actual implementation of a methane emission tax in Brazil still requires many rounds of discussion among sanitation companies, government, and civil society, to establish emission limits, and unit taxes, as well as to consolidate a carbon trade to follow through with this decision in the sanitation sector.

show abstract

Section: Resultsmentioning

confidence: 99%

Impact of a methane emission tax on circular economy scenarios in small wastewater treatment plants

Michalovicz¹,

Bilotta

2022

Environ Dev Sustain

View full text Add to dashboard Cite

show abstract

“…3.86 L CH4 m -3 d -1 [41] Industrial treatment facilities have a high energy demand [53]; thus, UASB technology offers opportunities for reducing treatment costs while treating wastewater. Gadow and Li [41] showed that the UASB technology could be extended to full-scale applications for 2-Naphthol red removal with a bioenergy recovery of 139.6 MJ per m 3 of effluent.…”

Section: Bioenergy Productionmentioning

confidence: 99%

A Short Review on Dye Wastewater Valorization Using Up-Flow Anaerobic Sludge Blanket Reactors

Almeida,

Guimarães

2023

Preprint

View full text Add to dashboard Cite

Dye-containing effluent generated in textile industries is polluting and complex wastewater. It should be managed adequately before the final destination. The up-flow anaerobic blanket (UASB) reactor application is an eco-friendly and cost-competitive treatment. The present study briefly reviews the UASB application for dye wastewater valorization. Bioenergy and clean water production potential during dye-containing wastewater treatment are emphasized to promote resource recovery in textile industries. Efficiencies of color and chemical oxygen demand of 50–97% and 60–90% are reported in bench-scale UASB studies. A biogas yield of 0.36–36.04 L d-1 in UASB, which treats dye-containing effluents, is documented. Bioenergy production and water reuse allow environmental and economic benefits. However, data on full-scale UASB treating dye wastewater are missing. Besides, studies on combined systems integrating membrane processes, such as ultrafiltration and nanofiltration, and pretreatment of wastewater and sludge for improvements in biogas production might realize the complete potential for resource recovery of UASB technology.

show abstract

“…The EU has encouraged the development of biogas plants for energy production by various support schemes to promote transition towards circular economy. The vast majority of developed countries have legislations and energy policies related to reducing GHG and mitigation of climate change [41].…”

Section: State or Municipal Budgetmentioning

confidence: 99%

“…In general, in developing countries, renewable energy targets are abandoned or progress in them is slow [41]. In Russia, local authorities are implementing municipal and state programs aimed at developing communal services and increasing its energy efficiency.…”

Section: State or Municipal Budgetmentioning

confidence: 99%

Financial Tools for Biogas Project Implementation at Wastewater Treatment Plants: A Case Study of the Russian Federation

Kiselev

Magaril

2022

WIT Transactions on Ecology and the Environment

View full text Add to dashboard Cite

Biogas projects have been recognized as one of the most efficient tools for implementing the principles of circular economy at wastewater treatment plants: negative environmental waste impact reduction along with the energy independence. These projects are widespread in developed countries, but its distribution in developing countries such as the Russian Federation leaves much to be desired. The article discusses the four financial instruments for implementation of biogas projects in the Russian Federation compared to developed countries, including the analysis of sectoral background, potential benefits, drivers and limitation. The authors concluded that barriers for the development of biogas projects are not directly related to the tool entity or its application: significant moral and physical deterioration of technological process line makes the use of these tools untimely, while the long-term payback period leads towards poor efficiency.

show abstract

Biogas recovery for sustainable cities: A critical review of enhancement techniques and key local conditions for implementation

Cited by 28 publications

References 98 publications

Impact of a methane emission tax on circular economy scenarios in small wastewater treatment plants

Impact of a methane emission tax on circular economy scenarios in small wastewater treatment plants

A Short Review on Dye Wastewater Valorization Using Up-Flow Anaerobic Sludge Blanket Reactors

Financial Tools for Biogas Project Implementation at Wastewater Treatment Plants: A Case Study of the Russian Federation

Contact Info

Product

Resources

About