Recent Progress and Trends in the Development of Microbial Biofuels from Solid Waste—A Review

Azimov, Ulugbek; Okoro, V. M. O.; Hernandez, Hector H.

doi:10.3390/en14196011

Cited by 10 publications

(4 citation statements)

References 133 publications

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“…Another way to save land for feedstock production is to intensify the utilization of residuals and by-products and recycling of waste materials (Trinks et al 2020). For example, lignocellulose is a key component of cereal straw, which is increasingly being processed into fuels (Azimov et al 2021;Hoefnagels 2018;E4Tech 2018). Basic chemical products could also be produced on the basis of lignocellulose (Dahmen et al 2018;Yu et al 2021;Demesa et al 2020).…”

Section: Increasing Biogenic Raw Materialsmentioning

confidence: 99%

Economic Trends in the Transition into a Circular Bioeconomy

Kircher¹

2022

JRFM

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The shift away from fossil fuels needed to reduce CO2 emissions requires the use of renewable carbon and energy sources, including biomass in the bioeconomy. Already today, the bioeconomy has a significant share in the EU economy with traditionally bio-based sectors. For the future, the energy, mobility and chemical sectors have additional high expectations of the bioeconomy, especially for agriculture and forestry to produce biomass as an industrial feedstock. Numerous studies have been published on the availability of feedstocks, but these often only look at individual applications. Looking at the total demand and considering the sustainability limits of biomass production leads to the conclusion that the expected demand for all industries that could process biomass exceeds the sustainably available capacity. To mitigate this conflict between feedstock demand and availability, it is proposed that the organic chemical sector be fully integrated into the bioeconomy and the energy sector be only partially integrated. In addition, recycling of wastes and residues including CO2 should lead to a circular bioeconomy. The purpose of this manuscript is to help fill the research gap of quantitatively assessing the demand and supply of biomass, to derive economic trends for the current transition phase, and to further develop the theoretical concept of the bioeconomy towards circularity.

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Section: Increasing Biogenic Raw Materialsmentioning

confidence: 99%

Economic Trends in the Transition into a Circular Bioeconomy

Kircher¹

2022

JRFM

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“…First generation (1G) biofuels are generally processed from edible food crops (e.g., sugar cane, palm oil, and rapeseed) and, they result in bioethanol, biodiesel, vegetable oil, bioether and solid biofuels. Second generation (2G) biofuels come from non-edible cellulosic energy crops, agricultural residues and woody biomass, and its products are cellulosic ethanol, biohydrogen, biomethane, Fischer-Tropsch Diesel and mycodiesel [28]. The main problem posed by 1G biofuels is the change in land use (i.e., the food vs fuel conflict) as well as uncompetitive retail prices.…”

Section: Biofuelsmentioning

confidence: 99%

Low-Emission Alternative Energy for Transport in the EU: State of Play of Research and Innovation

et al. 2021

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The 2030 Climate target plan of the European Commission (EC) establishes a greenhouse gases (GHG) emissions reduction target of at least 55% by 2030, compared to 1990. It highlights that all transport modes—road, rail, aviation and waterborne—will have to contribute to this aim. A smart combination of vehicle/vessel/aircraft efficiency improvements, as well as fuel mix changes, are among the measures that can reduce GHG emissions, reducing at the same time noise pollution and improving air quality. This research provides a comprehensive analysis of recent research and innovation in low-emission alternative energy for transport (excluding hydrogen) in selected European Union (EU)-funded projects. It considers the latest developments in the field, identifying relevant researched technologies by fuel type and their development phase. The results show that liquefied natural gas (LNG) refueling stations, followed by biofuels for road transport and alternative aviation fuels, are among the researched technologies with the highest investments. Methane-based fuels (e.g., compressed natural gas (CNG), LNG) have received the greatest attention concerning the number of projects and the level of funding. By contrast, liquefied petroleum gas (LPG) only has four ongoing projects. Alcohols, esters and ethers, and synthetic paraffinic and aromatic fuels (SPF) are in between. So far, road transport has the highest use of alternative fuels in the transport sector. Despite the financial support from the EU, advances have yet to materialize, suggesting that EU transport decarbonization policies should not consider a radical or sudden change, and therefore, transition periods are critical. It is also noteworthy that there is no silver bullet solution to decarbonization and thus the right use of the various alternative fuels available will be key.

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“…Further improvement in this system is based on meeting the action plan targets of the Circular Economy by upgrading recycling and incineration as the only available alternatives [6]. Municipal Solid Waste (MSW) is considered as a more environmentally friendly and economical biofuel for feedstock as compared to traditional fuel production [7].…”

Section: Introductionmentioning

confidence: 99%

Evolution of Solid Waste Management System in Lahore: A Step towards Sustainability of the Sector in Pakistan

et al. 2023

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Solid Waste Management (SWM) is a technical subject which requires comprehensive planning, execution, and effective operational monitoring under cost-effective modes compatible with environmentally sound technologies. The policymakers made some enormous efforts for the sustainability of this sector as well as setting a benchmark for other municipalities and Waste Management Companies (WMCs) in the country. Provincial Government prioritizes its focus on SWM, i.e., waste collection, transportation, treatment, and final disposal. The waste management sector in Lahore has achieved sustainability in waste collection and haulage components by gaining experience from international outsourcing and, now, sharing its knowledge with other municipalities to strengthen the sector in the country. Lahore has emerged with the highest collection efficiency (84%) in SAARC countries and placed fifth in rank in comparison to 54 low–middle-income countries/cities worldwide. The sectorial interventions in Lahore reveal an aspiration for the sustainability of the SWM sector in Pakistan. However, there is an urgent need to focus and invest in waste-related infrastructure development, i.e., permanent/mobile transfer stations, semi-underground containers for commercial and planned areas, material recovery facilities (MRF), and landfill. Environmental and economic sustainability in this sector can be achieved through public–private partnership (PPP) modality in compost, anaerobic digestion, recycling, and refuse-derived fuel (RDF) as it is a more feasible option to strengthen the industry in the country.

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Recent Progress and Trends in the Development of Microbial Biofuels from Solid Waste—A Review

Cited by 10 publications

References 133 publications

Economic Trends in the Transition into a Circular Bioeconomy

Economic Trends in the Transition into a Circular Bioeconomy

Low-Emission Alternative Energy for Transport in the EU: State of Play of Research and Innovation

Evolution of Solid Waste Management System in Lahore: A Step towards Sustainability of the Sector in Pakistan

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