Evaluation of Biogas Energy from Co-Digestion of Organic Urban Solid Waste with Lime Mud

Evaluation of Biogas Energy from Co-Digestion of Organic Urban Solid Waste with Lime Mud

The elevated presence of organic material in Brazilian urban solid waste, along with mismanagement of its disposal, can aggravate environmental problems from greenhouse gas emissions to water and soil pollution. In parallel, the paper and cellulose industries consume considerable resources and produ...

Full description

Saved in:
Bibliographic Details
Published in:Recycling (Basel) Vol. 8; no. 4; p. 57
Main Authors: Coelho, Ulisses Raad da Silva, Crispim, Adriele Maria de Cássia, Martins, Maria Auxiliadora de Barros, Barros, Regina Mambeli, Reno, Maria Luiza Grillo, Tiago Filho, Geraldo Lúcio, Santos, Ivan Felipe Silva
Format: Journal Article
Language:English
Published: Basel MDPI AG 01-07-2023
Subjects:
Alternative energy sources
Biogas
Cellulose
Chemical oxygen demand
Climate change
co-digestion
Digestion
Economics
Electric power grids
Emission standards
Emissions
Energy
Energy consumption
Energy costs
Environmental impact
Evaluation
Fermentation
Food waste
Greenhouse gases
Inhabitants
International agreements
Landfill
lime mud
Methane
Mud
Municipal waste management
organic fraction
Pollutants
Population growth
Quality of life
Raw materials
Renewable resources
Sensitivity analysis
Sludge
Soil pollution
Soil water
Solid waste disposal
Solid waste management
Solid wastes
urban solid waste
Waste disposal
Water pollution
Brazil
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The elevated presence of organic material in Brazilian urban solid waste, along with mismanagement of its disposal, can aggravate environmental problems from greenhouse gas emissions to water and soil pollution. In parallel, the paper and cellulose industries consume considerable resources and produce important solid wastes, including lime mud. These urban and industrial realities present common ground, from which a little-studied alternative arises in using biogas electrical energy from the co-digestion of the organic portion of urban solid waste using lime mud. This intersection can reduce the environmental impacts associated with inadequate management and disposal of solid waste, providing industry financial economy resources and contributing to Brazilian energy grid diversification. The current study used economic–financial indicators to evaluate the proposal’s economic feasibility. The obtained results presented a minimum population of 165,200 inhabitants, generating 39,295.77 m3/year of methane, in order to enable a co-digestion proposal. The sensitivity analysis indicated that a population of 185,500 inhabitants would provide a 10-year payback, an energy rate of USD 0.139, and 44,124.49 m3/year of methane to supply the population with power. The net present value was USD 23,336.94, with an internal return rate of 14.71% and a levelized energy cost of 0.103 USD/kWh.
ISSN:2313-4321
2313-4321
DOI:10.3390/recycling8040057