scholarly journals Solid Biofuels Scenarios from Rural Agricultural and Forestry Residues for Mexican Industrial SMEs

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6560
Author(s):  
Oscar Ruíz-Carmona ◽  
Jorge M. Islas-Samperio ◽  
Lourdes Larrondo-Posadas ◽  
Fabio Manzini ◽  
Genice K. Grande-Acosta ◽  
...  

In Mexico, as in the rest of the world, the industry sector is frequently highly dependent on fossil fuels; in addition, energy transformation processes are not very efficient and scarcely oriented towards climate change mitigation. Given these facts, solid biofuels (SBFs) from agricultural and forestry residues from rural areas may represent an alternative that contributes to the decarbonization of the industrial sector, especially in Small- and Medium-Sized Enterprises (SMEs). From an economic and climate change mitigation perspective, this study evaluates harnessing SBFs in SMEs related to lime, bricks, dairy products, craft beer, and artisanal mezcal (a well-known Mexican distilled alcoholic beverage), products mainly manufactured in rural areas of Mexico. For each of these SMEs, we constructed two energy consumption scenarios that span from 2018 to 2050. On the one hand, a baseline scenario (BS) that reflects the behaviour of historical energy consumption in Mexico and, on the other hand, an alternative scenario (AS) that proposes the use of SBFs with modern and efficient technologies and sustainable inputs of agricultural and forestry residues originated mainly from rural areas. According to our results, a comparison between the two scenarios reveals that two out of five SMEs industrial niches studied, appear with mitigation costs in the AS namely brick kilns, and limekilns SMEs that have mitigation costs of 9.99 and 19.74 USD/tCO2e, respectively, primarily due to the high investment cost of the new MK2 kilns and the relatively high cost of pellets, respectively. Since these niches have high mitigation potentials (7.77 MtCO2e for brick kilns and 2.83 MtCO2e for limekilns), their implementation requires adequate incentives and financing. On the contrary, the dairy, craft beer, and mezcal SMEs niches have negative mitigation costs (−14.30, −10.68, −0.98) USD/tCO2e, mainly due to the high savings in the cost of fossil fuels and their materialization, especially for the mezcal niche which has a mitigation potential of 2.97 MtCO2e, requires only an adequate regulatory and normative framework. We conclude that using commercial SBFs (pellets, briquettes, and traditional firewood) in SMEs niches contribute to generating formal markets with adequate distribution channels, both for SBFs and sustainable residual biomass inputs (residual firewood, agave bagasse, and spent barley grain). This alternative scenario also promotes the creation of green jobs in agricultural and forestry areas, adding an economic value to residual biomass inputs not previously considered and contributing to the social development of rural areas.

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 480 ◽  
Author(s):  
Zhiyu Li ◽  
Weiming Yi ◽  
Zhihe Li ◽  
Chunyan Tian ◽  
Peng Fu ◽  
...  

Biomass energy is becoming increasingly important, owing to the decreasing supply of fossil fuels and growing environmental problems. Hydrothermal carbonization (HTC) is a promising technology for producing solid biofuels from agricultural and forestry residues because of its lower fossil-fuel consumption. In this study, HTC was used to upgrade red jujube branch (RJB) to prepare hydrochar at six temperatures (220, 240, 260, 280, 300, and 320 °C) for 120 min, and at 300 °C for 30, 60, 90, and 120 min. The results showed that the energy recovery efficiency (ERE) reached maximum values of 80.42% and 79.86% at a residence time of 90 min and a reaction temperature of 220 °C, respectively. X-ray diffraction results and Fourier transform infrared spectroscopy measurements show that the microcrystal features of RJB were destroyed, whereas the hydrochar contained an amorphous structure and mainly lignin fractions at increased temperatures. Thermogravimetric analysis shows that the hydrochar had better fuel qualities than RJB, making hydrochar easier to burn.


Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6452
Author(s):  
Dalia Streimikiene ◽  
Tomas Baležentis ◽  
Artiom Volkov ◽  
Mangirdas Morkūnas ◽  
Agnė Žičkienė ◽  
...  

The paper deals with the exposition of the main barriers and drivers of renewable energy usage in rural communities. Climate change mitigation is causing governments, policymakers, and international organizations worldwide to embark on policies, leading to increased use of renewable energy sources and improvement of energy efficiency. Climate change mitigation actions, including the Green Deal strategy in the EU, require satisfying the expanding energy demand and complying with the environmental restrictions. At the same time, the prevailing market structure and infrastructure relevant to the energy systems are undergoing a crucial transformation. Specifically, there has been a shift from centralized to more decentralized and interactive energy systems that are accompanied by a low-carbon energy transition. Smart Grid technology and other innovations in the area of renewable energy microgeneration technologies have enabled changes in terms of the roles of energy users: they can act as prosumers that are producing and consuming energy at the same time. Renewable energy generation that is allowing for deeper involvement of the citizens may render higher social acceptance, which, in turn, fuels the low-carbon energy transition. The collective energy prosumption in the form of energy cooperatives has become a widespread form of renewable energy initiatives in rural communities. Even though renewable energy consumption provides a lot of benefits and opportunities for rural communities, the fast penetration of renewables and energy prosumption encounter several important barriers in the rural areas. This paper analyses the main barriers and drivers of renewable energy initiatives in rural areas and provides policy implications for the low-carbon energy transition in rural areas.


2021 ◽  
Author(s):  
Sanna Erkamo ◽  
◽  
Karoliina Pilli-Sihvola ◽  
Atte Harjanne ◽  
Heikki Tuomenvirta

This report describes the effects of climate change for Finland from the view of comprehensive security. The report examines both direct and indirect climate security risks as well as transition risks related to climate change mitigation. The report is based on previous research and expert interviews. Direct security risks refer to the immediate risks caused by the changing nature of natural hazards. These include the risks to critical infrastructure and energy systems, the logistics system, health and food security. Indirect security risks relate to the potential economic, political and geopolitical impacts of climate change. Climate change can affect global migration, increase conflict risk, and cause social tensions and inequality. Transition risks are related to economic and technological changes in energy transition, as well as political and geopolitical tensions and social problems caused by climate change mitigation policies. Reducing the use of fossil fuels can result in domestic and foreign policy tensions and economic pressure especially in locations dependent on fossil fuels. Political tension can also increase the risks associated with hybrid and information warfare. The security effects of climate change affect all sectors of society and the Finnish comprehensive security model should be utilized in preparing for them. In the short run, the most substantial arising climate change related security risks in Finland are likely to occur through indirect or transition risks. Finland, similar to other wealthy countries, has better technological, economic and institutional conditions to deal with the problems and risks posed by climate change than many other countries. However, this requires political will and focus on risk reduction and management.


Author(s):  
Andreas Hagenbo ◽  
Clara Antón-Fernández ◽  
Ryan M. Bright ◽  
Daniel Rasse ◽  
Rasmus Astrup

2018 ◽  
Vol 20 (4) ◽  
pp. 523-552 ◽  
Author(s):  
Michaël Aklin

AbstractClimate change mitigation relies increasingly on clean technologies such as renewable energy. Despite widespread success, further deployment of renewables has been met with resistance from voters and governments in several countries. How resilient is the renewable energy industry to adverse political events? I use the unexpected election of Donald Trump in the 2016 U.S. presidential race to study this question. As a vocal critic of renewables and a supporter of fossil fuels, his election is a plausible negative shock to the renewable energy sector. I examine stock market data to gauge the reaction of investors. I find that renewable energy stocks were adversely affected by the election. Overall, they experienced a cumulative abnormal loss in share values of about 6 percent on average over the twenty days that followed the election. However, I find that the negative effect is concentrated among non-U.S. firms. U.S. firms, on average, emerged unscathed. Non-U.S. companies, on the other hand, lost over 14 percent of their value in the aftermath of the election. This suggests that markets are more concerned by increasing obstacles to international business than a decrease of federal support for renewables.


2020 ◽  
Vol 163 (3) ◽  
pp. 1675-1693 ◽  
Author(s):  
Nico Bauer ◽  
David Klein ◽  
Florian Humpenöder ◽  
Elmar Kriegler ◽  
Gunnar Luderer ◽  
...  

AbstractBiomass feedstocks can be used to substitute fossil fuels and effectively remove carbon from the atmosphere to offset residual CO2 emissions from fossil fuel combustion and other sectors. Both features make biomass valuable for climate change mitigation; therefore, CO2 emission mitigation leads to complex and dynamic interactions between the energy and the land-use sector via emission pricing policies and bioenergy markets. Projected bioenergy deployment depends on climate target stringency as well as assumptions about context variables such as technology development, energy and land markets as well as policies. This study investigates the intra- and intersectorial effects on physical quantities and prices by coupling models of the energy (REMIND) and land-use sector (MAgPIE) using an iterative soft-link approach. The model framework is used to investigate variations of a broad set of context variables, including the harmonized variations on bioenergy technologies of the 33rd model comparison study of the Stanford Energy Modeling Forum (EMF-33) on climate change mitigation and large scale bioenergy deployment. Results indicate that CO2 emission mitigation triggers strong decline of fossil fuel use and rapid growth of bioenergy deployment around midcentury (~ 150 EJ/year) reaching saturation towards end-of-century. Varying context variables leads to diverse changes on mid-century bioenergy markets and carbon pricing. For example, reducing the ability to exploit the carbon value of bioenergy increases bioenergy use to substitute fossil fuels, whereas limitations on bioenergy supply shift bioenergy use to conversion alternatives featuring higher carbon capture rates. Radical variations, like fully excluding all technologies that combine bioenergy use with carbon removal, lead to substantial intersectorial effects by increasing bioenergy demand and increased economic pressure on both sectors. More gradual variations like selective exclusion of advanced bioliquid technologies in the energy sector or changes in diets mostly lead to substantial intrasectorial reallocation effects. The results deepen our understanding of the land-energy nexus, and we discuss the importance of carefully choosing variations in sensitivity analyses to provide a balanced assessment.


2018 ◽  
Vol 19 (2) ◽  
pp. 258-274 ◽  
Author(s):  
Filip Johnsson ◽  
Jan Kjärstad ◽  
Johan Rootzén

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