Availability and Applicability of Wood and Crop Residues for the Production of Wood Composites

Due to high levels of volatility in both the agricultural and the forestry commodity markets, specifically, of timber and agricultural crops, it is important to identify the risks associated with the stability of supplies necessary for the production of composite materials in the Czech Republic. This study aims to accurately estimate the availability of selected raw materials that contain lignocellulose over the next 20 years. In addition, their suitability for the production of composite materials is assessed based on their physical properties. Furthermore, in the event of scarcity involving timber in the European Union, recycled wood and post-harvest residues could replace conventional raw materials in wood-based composites such as particleboards and chipboards. The viable potential of Czech forests is predicted to be between 740 and 750 million cubic meters of timber. For agricultural crops, it is estimated at 0.9 million hectares of wheat and 0.5 million hectares of canola under the current EU biofuel policy and at 0.4 million hectares if this policy is removed. According to moisture and fibre analyses carried out in our study, the most suitable candidate for wood-based composites production is soft wood.

Recent advances in bioethanol production from lignocelluloses: a comprehensive review with a focus on enzyme engineering and designer biocatalysts

Many countries have their biofuel policy programs in place as part of their overall strategy to achieve sustainable development. Among biofuels, bioethanol as a promising alternative to gasoline is of substantial interest. However, there is limited availability of a sufficient quantity of bioethanol to meet demands due to bottlenecks in the present technologies to convert non-edible feedstocks, including lignocelluloses. This review article presents and critically discusses the recent advances in the pretreatment of lignocellulosic biomass, with a focus on the use of green solvents, including ionic liquids and deep eutectic solvents, followed by enzymatic saccharification using auxiliary proteins for the efficient saccharification of pretreated biomass. Different techniques used in strain improvement strategies to develop hyper-producing deregulated lignocellulolytic strains are also compared and discussed. The advanced techniques employed for fermentation of mixed sugars contained in lignocellulosic hydrolysates for maximizing bioethanol production are summarized with an emphasis on pathway and transporters engineering for xylose assimilation. Further, the integration of different steps is suggested and discussed for efficient biomass utilization and improved ethanol yields and productivity.

Renovabio: Innovation and Sustainability at the New Brazilian Biofuels Policy or The Emperor’s New Clothes?

Biofuel policies are an ongoing matter for both developed and developing countries. Brazil, a giant world producer, has a historical roll of regulations and laws that affect the sector. Nevertheless, studies from a political ecology perspective, which pay attention to the impacts of power relations and discourses in political outcomes are scarce. In this sense, we focus on the National Biofuel Policy (Renovabio), launched in 2017, to analyze discursive coalitions as well as perceptions from social actors settle in a biofuel production territory. We sought to understand contradictions between discourses and practices within Renovabio and how they reproduce traditional Brazilian Biofuel policies. To answer these questions, we used Atlas.ti software to support a content and critical discursive analysis in order to detect distinct perspectives, narratives and interests during Renovabio’s implementation. We draw on: i) statements from stakeholders, lobbyists, and Congress members; ii) Bills, Law Projects and ordinances texts from the special commissions and committees; iii) speeches from plenary sessions occurred on the National Congress; iv) Public Audiences contributions; v) articles from biofuel magazines and specialized websites; and, vi) digital platforms from lobbies and interest groups; We also conducted 24 interviews with community members, farmers, local government officials, civil associations, and industry representatives in the state of Goiás, a large ethanol/ sugar-energy production territory. Results pointed to a strong ecological modernization discourse deployed to justify the rapid policy implementation and to legitimize economic incentives, particularly ecological labeling/certification. Renovabio’s goals, speeches and practices are in many senses contradictory and reproduce problems detected in previous biofuel policies that dim legislative transparency, weakens accountability and tramples society participation and representativeness over biofuel development.

Carbon pricing and planetary boundaries

Human activities are threatening to push the Earth system beyond its planetary boundaries, risking catastrophic and irreversible global environmental change. Action is urgently needed, yet well-intentioned policies designed to reduce pressure on a single boundary can lead, through economic linkages, to aggravation of other pressures. In particular, the potential policy spillovers from an increase in the global carbon price onto other critical Earth system processes has received little attention to date. To this end, we explore the global environmental effects of pricing carbon, beyond its effect on carbon emissions. We find that the case for carbon pricing globally becomes even stronger in a multi-boundary world, since it can ameliorate many other planetary pressures. It does however exacerbate certain planetary pressures, largely by stimulating additional biofuel production. When carbon pricing is allied with a biofuel policy, however, it can alleviate all planetary pressures.