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Designing & Facilitating a Bioeconomy in the Capital Regional District Learning Through the Lenses of Biomimicry, Industrial Symbiosis, and Green Chemistry
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The need to increase circularity of industrial systems to address limited resources availability and climate change has triggered the development of the food waste biorefinery concept. However, for the development of future sustainable industrial processes focused on the valorisation of food waste, critical aspects such as (i) the technical feasibility of the processes at industrial scale, (ii) the analysis of their techno-economic potential, including available quantities of waste, and (iii) a life cycle-based environmental assessment of benefits and burdens, need to be considered. The goal of this review is to provide an overview of food waste valorisation pathways and to analyse to which extent these aspects have been considered in the literature. Although a plethora of food waste valorisation pathways exist, they are mainly developed at lab-scale. Further research is necessary to assess upscaled performance, feedstock security, and economic and environmental assessment of food waste valorisation processes.
Spider venoms are complex chemical arsenals that contain a rich variety of insecticidal toxins. However, the major toxin class in many spider venoms is disulfide‐rich peptides known as knottins. The knotted three‐dimensional fold of these mini‐proteins provides them with exceptional chemical and thermal stability as well as resistance to proteases. In contrast with other bioinsecticides, which are often slow‐acting, spider knottins are fast‐acting neurotoxins. In addition to being potently insecticidal, some knottins have exceptional taxonomic selectivity, being lethal to key agricultural pests but innocuous to vertebrates and beneficial insects such as bees. The intrinsic oral activity of these peptides, combined with the ability of aerosolized knottins to penetrate insect spiracles, has enabled them to be developed commercially as eco‐friendly bioinsecticides. Moreover, it has been demonstrated that spider‐knottin transgenes can be used to engineer faster‐acting entomopathogens and insect‐resistant crops. © 2019 Society of Chemical Industry
The sustainability of global phosphorus (P) use is emerging as a major societal goal to secure future food, energy, and water security for a growing population. Phosphate rock (PR) is a critical raw material whose inefficiency of use is leading to widespread eutrophication and uncertainties about supplies of affordable fertilizers. Green chemistry and green engineering can be applied to help close the global P cycle by addressing three sustainability challenges: (1) consume less PR and with greater efficiency, (2) minimise P losses and generation of waste P that can no longer be re-used, and (3) set economically, socially and environmentally acceptable P sustainability targets to lower P demand. Greater precision in P use by the agriculture sector (the main P flow) supported by smarter PR mining and processing technology could greatly improve global P use efficiency. Emerging bio-based and green chemical technologies could be more widely applied to enhance first- and second-generation valorization of low-grade PR ores, manures, by-products and residues to provide renewable secondary sources of P and other essential elements and compounds. All sectors of society have the potential to lower their P demands, and all production systems could be redesigned to facilitate recovery and recycling of P. Collectively these ‘green engineering’ actions at sector and regional level can help achieve planetary P sustainability.
Biomimicry as a design concept is indeed revolutionary in its implications for human systems of production, but it is a concept in need of further philosophical elaboration and development. To this end certain philosophical principles underlying the organization of living systems generally are identified and it is argued that not only our systems of production but also our psychocultural patterns of desire need to be reorganized in accordance with these principles if we are collectively to achieve the integration into nature to which biomimicry aspires. Even were this reorganization to be effected however, there is still an ethically momentous ambiguity in biomimicry that needs to be teased out before we can be assured that biomimicry will indeed produce the bioinclusive sustainability outcomes that it seems to promise.
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Abstract- Extending shelf life of food products is a major concern of the producers, and the food industry requires ‘greener’ alternatives to the current technologies. Ozone-based food preservation may suit this niche. Ozone is an attractive alternative preservative that food industry needs due to its properties such as quick decomposition and little residual effect during food preservation. Ozone is the strongest molecule available for the disinfection of water and is second only to elemental fluorine in oxidizing power. Ozone is being used in the food industry in various applications such as decontamination of water and equipment surfaces. Several researchers have focused on the application of ozone to inactivate microorganisms on fresh produce, like fruits, vegetables, meat, poultry, fish, and eggs, and dry produce, such as cereals, pulses, and spices. This review comprehensively analyses appropriate ozone concentrations and exposure times and discusses various factors that affect the quality and safety of food products during ozonation.
Recently, two articles were published in leading scientific journals, each calling attention to an emerging mass extinction. The two are complementary in that they reached the same conclusion by using data from contrasting environments. But, the important question in each case is, can the beginning of a mass extinction be confidently predicted from the evidence presented? The two articles are the latest of several publications that have stated the Earth is in the beginning of a great extinction episode that will eventually result in the loss of at about 75% of all living species. The most recent extinction of this magnitude occurred at the close of the Cretaceous about 65 million years ago. The new mass extinction prognosis began about 22 years ago and was based on estimates of species extinction, due to human activities, that had reached thousands of species per year. Although such unsupported estimates soon gave way to more realistic approximations based on documented records, the spectre of a mass extinction has remained. However, I have found evidence that human-caused extinctions have amounted to only about 1.5 species per year for the last 500 years and that these losses have probably been equalled or surpassed by species born (speciation) during that time. Without evidence of substantial net species loss, mass extinction becomes a speculation without substance. The world’s greatest conservation problem is not species extinction but population decline to the point where many species exist only as remnants of their former abundance.
Industrial Symbiosis (IS) is an ecological approach aiming to promote waste valorization opportunities. To date, efforts related to IS process rely on data generated in the aftermath of IS network formation. We propose the integration of the process of screening of IS network options and optimisation of respective environmental performance with the use of semantics.
Green Chemistry is a relatively new emerging field that strives to work at the molecular level to achieve sustainability. The field has received widespread interest in the past decade due to its ability to harness chemical innovation to meet environmental and economic goals simultaneously. Green Chemistry has a framework of a cohesive set of Twelve Principles, which have been systematically surveyed in this critical review. This article covers the concepts of design and the scientific philosophy of Green Chemistry with a set of illustrative examples. Future trends in Green Chemistry are discussed with the challenge of using the Principles as a cohesive design system (93 references).
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