The latest publications in this offer are:
The Additive Manufacturing by molten Material Extrusion (AM-ME) of natural biopolymers opens up major prospects in pharmaceutical or biomedical field, for the custom production of edible and resorbable parts. This paper shows the interest and challenges to be met for the use of plant-based biopolymers using this 3D printing process. Based on the study of zein, a storage protein by-product of corn starch production, this paper details its suitability for AM-ME specifications by investigating its thermomechanical and rheological properties, as well as determining its adhesion abilities in the molten state.
The article presents the different key-steps in the life cycle of biobased and/or biodegradable polyesters. It describes the elaboration processes of each of these polyesters, going back to the raw materials used, especially when these are of plant-based. These production processes can be biotechnological approaches as well as fairly conventional chemical methodologies. For each of these polyesters, the main functional properties and current or future applications are detailed and criticized with regard to the issues of today. Their strengths but also the drawbacks limiting their development are explained.
Nowadays, in the research of long-term solutions to limit the earth global warming due to green-house gas (GHG), the construction and building sector can play an important role. The setting of bio-based materials in new buildings or for renovation seems a reliable way of sustainability and tempo-rary carbon storage.This paper aims at analyzing the physical phenomena and issues, by taking into account the moment and duration of the GHG storage and emissions: which type of bio-based material: agro-ressource or wood ; which lifespan for the buildings and the materials ; amount of carbon uptake in each plant, dissolution kinetics of GHG; which end of life scenario.
Bio-based plastics and recycled plastics are more and more often used in packaging in France and elsewhere. These materials are complementary to the virgin plastics of fossil origin. They bring new functionalities and added-value to plastic and flexible packaging. Studies all predict a growth of these plastics in the years to come, but the growth rate is still uncertain.This article describes the current situation, the determining factors of this growth and the principal initiatives taken in response to the challenge of developing bio-based and recycled plastics in packaging.
There is currently an increasing need for fast and cost-effective analytical methods suitable for water pollutants monitoring and toxicological impact assessment. In this context, some techniques based on the specific properties of whole cells, enzymes, antibodies, DNA, biopolymers or materials of natural origin, appear as excellent alternatives or complementary techniques to classical chemical methods. This article will be more particularly focused on biosensors and biosorbents (principles, advantages and limitations, application to water quality assessment, new trends).
Biomass valorisation is at the heart of the energetic resources’ issues in the twenty-first century. Mainly regarding wet biomass, supercritical water gasification is an interesting process to produce a valuable energetic gas, due to its non-fossil origin. The operating conditions of supercritical water processes, the influence of the main conditions on the nature and conversion yield of this process are detailed in this paper. The most important laboratory pilots are presented, together with the first industrial developments.
In a context of raw materials shortage, awareness of a need for environmental protection, and pressure from regulations, the chemical industry is showing a growing interest in biosolvents made from renewable raw materials. Bio-based solvents offer an alternative to fossil resources, preventing health, safety and environmental hazards. After a reminder of the background to the solvents market, this paper presents the main biosolvent categories known for their industrial applications, and the different strategies for the design and selection of biosolvents meeting given specifications.
This article proposes to tackle the carbon capture, utilization and storage challenge through an integrated approach, to reach net zero emission objectives and mitigate global warming. In this perspective, a series of CCUS technologies currently operational at the industrial scale are analyzed from techno economic point of view, in order to identify key synergies or issues within the value chain. Eventually, this article explores the current frontiers of knowledge regarding the molecular chemistry of amine absorbents used in post-combustion capture, which paradoxically remains the most mature and deployed capture technology to date.
Microalgae-based biofacades are an original example of urban integration of an interesting plant biomass bioproduction. This article details the challenges of this integration, both for the host-building and for the microalgae culture. General design principles are presented, along with various implementation examples. The main performance and social acceptability criteria are then summarized. The article concludes with perspectives for innovation, demonstrating the value of creating thermal and chemical symbioses to reduce the energy consumption and environmental impact of buildings and microalgae production.
This article is devoted to the purification of biogas and in particular to the removal of volatile organic compounds (VOCs) and siloxanes. After a presentation of the constituent elements of biogas after anaerobic digestion of domestic, industrial, agricultural organic matters or sewage sludge, the contents of undesirable compounds are presented. The separation/purification processes to be implemented depends on the recovery of the biomethane: engine, electricity, fuel cell or network injection. The treatment processes (condensation, membrane, absorption, adsorption, oxidation, biodegradation) of biogas are described and discussed.
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