Emerging value chains within the bioeconomy: Structural changes in the case of phosphate recovery

Carraresi, Laura; Berg, Silvan; Bröring, Stefanie

doi:10.1016/j.jclepro.2018.02.135

Cited by 68 publications

(48 citation statements)

References 76 publications

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“…The adoption of a bioeconomy strategy-transforming waste and/or by-products into value-added products-falls into this challenge, as it requires a complex process of organization among stakeholders. Recent studies have analyzed the development of novel value chains for promoting biomass valorization, highlighting several implementation challenges [58][59][60][61][62][63]. To illustrate this, Ekman and colleagues [64] pointed out the high risk perception of investors that is associated with the implementation of technological innovations needed for processing waste and by-products.…”

Section: Literature Overviewmentioning

confidence: 99%

Making Virtue Out of Necessity: Managing the Citrus Waste Supply Chain for Bioeconomy Applications

et al. 2018

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The efficient use of agricultural wastes and by-products, which essentially transforms waste materials into value-added products, is considered as pivotal for an effective bioeconomy strategy for the rural development. Within this scope, citrus waste management represents a major issue for citrus processors. However, it also represents a potentially unexploited resource for rural sustainable development. This study focuses on analyzing the current management of citrus waste in South Italy, and on identifying the determinants and barriers that may affect an entrepreneur’s choice in the destination of citrus waste. This study investigates the preferences of citrus processors regarding the contract characteristics necessary to take part in a co-investment scheme. Both analyses are preliminary steps in designing an innovative and sustainable citrus by-product supply chain. Results show that the distance between the citrus processors and the citrus by-products plant is one of the main criteria for choosing alternative valorization pathways. Moreover, guaranteed capital, a short duration of the contract, and reduced risk are contract scheme characteristics that improve entrepreneurs’ willingness to co-invest in the development of a citrus waste multifunctional plant. The overall applied approach can be extended to other contexts for designing new and innovative by-product supply chains, thereby enhancing the implementation of bioeconomy strategies.

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Section: Literature Overviewmentioning

confidence: 99%

Making Virtue Out of Necessity: Managing the Citrus Waste Supply Chain for Bioeconomy Applications

et al. 2018

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“…The primary requirements for our process include that the P i is dissolved, and other dissolved substances do not inhibit S. cerevisiae excessively. Food‐grade P i waste streams, such as agricultural plant waste (Carraresi, Berg, & Bröring, 2018; Herrmann, Ruff, & Schwaneberg, 2020; Herrmann, Ruff, Infanzon, & Schwaneberg, 2019) and some spent fermentation broths, would allow the production of food‐grade bio‐polyP. There are many applications of polyP not related to food (e.g., paint, fertilizer, cleaning agents, and flame‐retardants).…”

Section: Discussionmentioning

confidence: 99%

Biotechnological synthesis of water‐soluble food‐grade polyphosphate with Saccharomyces cerevisiae

Christ

Smith

Willbold

et al. 2020

Biotech & Bioengineering

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Inorganic polyphosphate (polyP) is the polymer of phosphate. Water‐soluble polyPs with average chain lengths of 2–40 P‐subunits are widely used as food additives and are currently synthesized chemically. An environmentally friendly highly scalable process to biosynthesize water‐soluble food‐grade polyP in powder form (termed bio‐polyP) is presented in this study. After incubation in a phosphate‐free medium, generally regarded as safe wild‐type baker's yeast (Saccharomyces cerevisiae) took up phosphate and intracellularly polymerized it into 26.5% polyP (as KPO3, in cell dry weight). The cells were lyzed by freeze‐thawing and gentle heat treatment (10 min, 70°C). Protein and nucleic acid were removed from the soluble cell components by precipitation with 50 mM HCl. Two chain length fractions (42 and 11P‐subunits average polyP chain length, purity on a par with chemically produced polyP) were obtained by fractional polyP precipitation (Fraction 1 was precipitated with 100 mM NaCl and 0.15 vol ethanol, and Fraction 2 with 1 final vol ethanol), drying, and milling. The physicochemical properties of bio‐polyP were analyzed with an enzyme assay, 31P nuclear magnetic resonance spectroscopy, and polyacrylamide gel electrophoresis, among others. An envisaged application of the process is phosphate recycling from waste streams into high‐value bio‐polyP.

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“…Improved P stewardship lies at the heart of the sustainable intensification imperative, with three key stages (Hill, 1985; Fig. 1): Efficiency of resource management: including extension and policy support to help target and rationalize fertilizer and feed P inputs; precision farming; revisiting soil test P recommendations for optimum yield; the “4Rs” of nutrient management (right source, rate, time and place, taking into account local site variations; International Fertilizer Association, 2009); and avoidance of biomass and P losses across the supply chain. Substitution : replacement of technologies and less efficient components of the agricultural system with, for example, new crop varieties, no‐tillage systems, and substituting energy crops with second‐generation lignocellulosic biomass. Redesign : including changes in land management to support agroecological processes that deliver beneficial ecosystem services, such as nutrient cycling, water retention, and soil regeneration (Macintosh et al, 2019); changes from conventional monoculture intensive farming to site‐specific and multifunctional agricultural systems; a shift toward mixed farming systems that allow recycling of P and closure of local P cycles; and creation of novel value chains that connect the production of biomass, bio‐based chemicals, bioenergy, and recovered nutrients for fertilizers and that are sustainable and competitive against fossil‐based products and processes (Carraresi et al, 2018). …”

Section: Increasing Demand For Biomass: the Need For Sustainable Intementioning

confidence: 99%

“…A core requirement of a circular bioeconomy is a circular P economy, based on efficient reuse, recovery, and recycling of P‐rich biowastes (livestock manure, food wastes, industrial and municipal wastewater), thus reducing reliance on fossil phosphate rock resources and helping to close the P cycle (Carraresi et al, 2018). This is already starting to happen through the horizontal integration of agriculture with other industries, stimulating new value‐added chains, which connect the production of biomass, chemicals, energy, and recovered nutrients as commercial fertilizers (Carraresi et al, 2018). However, these technologies need to be scalable in producing high‐quality P fertilizer products that can be cost‐effectively transported back to replenish soil P reserves in areas of crop production, thus addressing the profound inequalities in P surpluses and deficits (Sharpley et al, 2018).…”

Section: Phosphorus: the Poster Child For Circularization Within The mentioning

confidence: 99%

“…• Substitution: replacement of technologies and less efficient components of the agricultural system with, for example, new crop varieties, no-tillage systems, and substituting energy crops with second-generation lignocellulosic biomass. • Redesign: including changes in land management to support agroecological processes that deliver beneficial ecosystem services, such as nutrient cycling, water retention, and soil regeneration (Macintosh et al, 2019); changes from conventional monoculture intensive farming to site-specific and multifunctional agricultural systems; a shift toward mixed farming systems that allow recycling of P and closure of local P cycles; and creation of novel value chains that connect the production of biomass, bio-based chemicals, bioenergy, and recovered nutrients for fertilizers and that are sustainable and competitive against fossil-based products and processes (Carraresi et al, 2018).…”

Section: Increasing Demand For Biomass: the Need For Sustainable Intementioning

confidence: 99%

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Future Phosphorus: Advancing New 2D Phosphorus Allotropes and Growing a Sustainable Bioeconomy

et al. 2019

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With more than 40 countries currently proposing to boost their national bioeconomies, there is no better time for a clarion call for a “new” bioeconomy, which, at its core, tackles the current disparities and inequalities in phosphorus (P) availability. Existing biofuel production systems have widened P inequalities and contributed to a linear P economy, impairing water quality and accelerating dependence on P fertilizers manufactured from finite nonrenewable phosphate rock reserves. Here, we explore how the emerging bioeconomy in novel, value‐added, bio‐based products offers opportunities to rethink our stewardship of P. Development of integrated value chains of new bio‐based products offers opportunities for codevelopment of “P refineries” to recover P fertilizer products from organic wastes. Advances in material sciences are exploiting unique semiconductor and opto‐electrical properties of new “two‐dimensional” (2D) P allotropes (2D black phosphorus and blue phosphorus). These novel P materials offer the tantalizing prospect of step‐change innovations in renewable energy production and storage, in biomedical applications, and in biomimetic processes, including artificial photosynthesis. They also offer a possible antidote to the P paradox that our agricultural production systems have engineered us into, as well as the potential to expand the future role of P in securing sustainability across both agroecological and technological domains of the bioeconomy. However, a myriad of social, technological, and commercialization hurdles remains to be crossed before such an advanced circular P bioeconomy can be realized. The emerging bioeconomy is just one piece of a much larger puzzle of how to achieve more sustainable and circular horizons in our future use of P. Core Ideas Society's vision for a more circular economy must go beyond the C cycle to include P. Some biofuel systems have widened P inequalities and contributed to a linear P economy. New bioeconomy in bio‐based products offers an opportunity to rethink P stewardship. A circular bioeconomy requires efficient P reuse, recovery, and recycling from waste. New 2D P allotrope technologies offer a potential antidote to our current P “paradox.”

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Emerging value chains within the bioeconomy: Structural changes in the case of phosphate recovery

Abstract: Paper prepared for presentation at the 149th EAAE Seminar 'Structural change in agri-food chains: new relations between farm sector, food industry and retail sector'

Cited by 68 publications

References 76 publications

Making Virtue Out of Necessity: Managing the Citrus Waste Supply Chain for Bioeconomy Applications

Making Virtue Out of Necessity: Managing the Citrus Waste Supply Chain for Bioeconomy Applications

Biotechnological synthesis of water‐soluble food‐grade polyphosphate with Saccharomyces cerevisiae

Future Phosphorus: Advancing New 2D Phosphorus Allotropes and Growing a Sustainable Bioeconomy

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