Cleaner and Circular Bioeconomy最新文献

{"title":"Environmental Impacts Assessment in Packaging and Its Contribution to Reducing Food Waste","authors":"Cassiano L. Paiva,&nbsp;Cassia M.L. Ugaya","doi":"10.1016/j.clcb.2024.100083","DOIUrl":"https://doi.org/10.1016/j.clcb.2024.100083","url":null,"abstract":"<div><p>In the modern world, food consumption is not limited to areas near production centers. In this complex distribution chain, packaging plays a crucial role, extending shelf life and protecting products from contaminants or mechanical damage, contributing to reducing food waste during transportation, retail, and inside our homes. On the other hand, packaging is responsible for environmental impacts that are perceived as very harmful to environment by consumers. However, is it possible to demonstrate that packaging, in certain products and operating conditions, can be beneficial to environment? The goal of this article is to investigate the potential environmental performance of food products sold with or without packaging. To identify the potential food waste reduction through the use of packaging, three interviews were conducted with supermarket owners in Curitiba - Brazil. The interviews have revealed that the use of packaging can result in a food waste reduction of up to 20%, because it prevents excessive products handling and allows for sale of damaged product parts. The products identified as critical and selected for this study were broccoli, grapes, and papaya, for which a Life Cycle Assessment (LCA) was conducted to compare potential impacts of samples of products exposed with and without packaging and to simulate the food waste reduction rate at which the use of packaging could be favorable in each impact category. The functional unit considered was 1 kg of food product for human consumption. The product system embraced a cradle-to-grave approach, covering food and packaging production, retail, and final disposal of both food and packaging. Calculations were performed using the Ecoinvent 3.8v database, the EPD (2018) method, and potential impacts were determined through OpenLCA. Results indicated that, in the case of excessive handling, packaged broccoli and grapes had lower impacts in seven of eight evaluated categories. The use of packaged cut papaya had lower impacts in all eight categories, with restrictions regarding the amount of packaging used in the process. The study concludes that the evaluation of the use of packaging should consider the reduction of product waste generated by them. The main contribution of this study, therefore, is to emphasize the importance of evaluate all impacts related to a product, not just those that are easily known, such as the generation of solid waste in packaged products.</p></div>","PeriodicalId":100250,"journal":{"name":"Cleaner and Circular Bioeconomy","volume":"8 ","pages":"Article 100083"},"PeriodicalIF":0.0,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772801324000125/pdfft?md5=3f8f18bc0299a481fd0bd7d83337be6d&pid=1-s2.0-S2772801324000125-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140622015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Life cycle assessment of single cell protein production–A review of current technologies and emerging challenges","authors":"Laura Fernández-López ,&nbsp;Pablo González-García ,&nbsp;Ana Fernández-Ríos ,&nbsp;Rubén Aldaco ,&nbsp;Jara Laso ,&nbsp;Eva Martínez-Ibáñez ,&nbsp;David Gutiérrez-Fernández ,&nbsp;Marta M. Pérez-Martínez ,&nbsp;Virginia Marchisio ,&nbsp;Mónica Figueroa ,&nbsp;David Baptista de Sousa ,&nbsp;Diego Méndez ,&nbsp;María Margallo","doi":"10.1016/j.clcb.2024.100079","DOIUrl":"https://doi.org/10.1016/j.clcb.2024.100079","url":null,"abstract":"<div><p>Population growth trend will have a significant impact on the availability of food resources, leading to a surge in the development of various protein concentrates, including Single Cell Protein (SCP), which is derived from the biomass of unicellular organisms. The objective of this review is to analyze the application of Life Cycle Assessment (LCA) on SCP production, assessing the influence of the technologies on environmental outcomes and the challenges linked to LCA methodological choices. The articles included in the review were classified according to their LCA goal, distinguishing between those focused on the production of SCP for consumption, for feed valorization, for wastewater treatment and for conventional foods substitution in meals. Generally, most systems comprised three stages: feedstock production and pre-treatment, fermentation, and post-treatment, and in some cases, integration of SCP into the final product. The analysis revealed that the type of substrate has a great influence on the environmental profile of the product, as well as its pre-treatment. Electricity was also identified as the main hotspot in virtually all systems, being the most studied parameter in sensitivity analyses. Regarding the definition of LCA parameters, a lack of consensus on the description of system boundaries in the use of organic waste as substrate for SCP production is notable, leading to confusion about the actual associated impacts. Likewise, the study of the environmental performance of SCP based on its amino acid content and nutritional quality is one of the main challenges that would contribute to better evaluating its environmental behavior compared to other types of protein of vegetal and animal origin.</p></div>","PeriodicalId":100250,"journal":{"name":"Cleaner and Circular Bioeconomy","volume":"8 ","pages":"Article 100079"},"PeriodicalIF":0.0,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772801324000083/pdfft?md5=93c69f621dfc9002ba1c7d7e08410f2b&pid=1-s2.0-S2772801324000083-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140186951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimizing media and substrate for efficient anaerobic biological ammonia synthesis: A response surface methodology approach","authors":"Ibrahim Bello ,&nbsp;Adewale Adeniyi ,&nbsp;Niloy Chandra Sarker ,&nbsp;Ewumbua Monono ,&nbsp;Ademola Hammed","doi":"10.1016/j.clcb.2024.100077","DOIUrl":"https://doi.org/10.1016/j.clcb.2024.100077","url":null,"abstract":"<div><p>Ammonia ranks among the most extensively produced natural and anthropogenic chemicals due to its immense applications, especially in agriculture as fertilizer. The global demand for ammonia has thus been projected to increase. Haber process, the conventional method of ammonia production is costly, energy intensive and responsible for ∼2% of CO₂ emission. The rumen Hyper Ammonia Producing Bacteria (HAB) has the potential to convert protein to ammonia. To develop an industrial feasible ammonia production alternative, this study aims to optimize soy-based media composition for biological ammonia using response surface methodology (RSM). A one-factor-at-a-time (OFAT) statistical design was used to determine the most important media components affecting biological ammonia production. Eight media components were screened, and results showed that K₂HPO₄, KH₂PO₄, Na₂SO₄ and soy meal protein isolate (SMPI) had the most significant impact on biological ammonia production. The four identified media components were further optimized using a central composite design (CCD). The RSM model equation for independent and response variables was computed and used to create the response surface and contour plots. Results showed a maximum biological ammonia experimental yield of ∼7,500 mg/L at 0.0492 g/100 mL K₂HPO₄, 0.0492 g/100 mL KH₂PO₄, 0.64 g/100 mL Na₂SO₄, and 10 % SMPI. The observed yield was ∼80 % higher than the biological ammonia production from previous studies.</p></div>","PeriodicalId":100250,"journal":{"name":"Cleaner and Circular Bioeconomy","volume":"8 ","pages":"Article 100077"},"PeriodicalIF":0.0,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S277280132400006X/pdfft?md5=eba5c49b2c23de296ef06121ec1bf02b&pid=1-s2.0-S277280132400006X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140145132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of the mechanical and thermal behaviour of CS/HDPE biocomposites based on processing techniques","authors":"Lucky Ogheneakpobo Ejeta","doi":"10.1016/j.clcb.2024.100078","DOIUrl":"https://doi.org/10.1016/j.clcb.2024.100078","url":null,"abstract":"<div><p>In an attempt to produce sustainable materials with improved performance suitable for use in the built environment, the effects of processing techniques on the mechanical and thermal properties of cotton stalk flour polymer composites were investigated. The results reveal that all the injection-molded samples exhibited higher tensile and flexural strength than the compression-molded sample. Also, the injection molded samples filled with 30 wt% and 40 wt% of cotton stalk flour have higher tensile and flexural modulus than the compression molded sample with the 50 wt% filler loading. The notched impact strength of all the injection-molded samples was found to be greater than that of the compression-molded sample. The thermal stability of the compression-molded sample- was seen to be higher than that of the injection-molded samples. The SEM analysis of the compression molded notched impact fractured samples shows a rapid growth of crack propagation owing to poor interfacial bonding. The study demonstrates that the injection molding technique is a better option for producing biocomposites from cotton stalk flour of particle size distribution 425 μm to &lt;53 μm and recycled high-density polyethylene (HDPE) with improved mechanical performance intended for decking and flooring applications.</p></div>","PeriodicalId":100250,"journal":{"name":"Cleaner and Circular Bioeconomy","volume":"8 ","pages":"Article 100078"},"PeriodicalIF":0.0,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772801324000071/pdfft?md5=7c913e8b704053f629edbff1e9170836&pid=1-s2.0-S2772801324000071-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140138178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Economic flexibilities and opportunities for sugar cane plants: A real options valuation case","authors":"Igor Gimenes Cesca ,&nbsp;Fernando Antonio Slaibe Postali ,&nbsp;Virginia Parente","doi":"10.1016/j.clcb.2024.100074","DOIUrl":"10.1016/j.clcb.2024.100074","url":null,"abstract":"<div><p>The goal of this paper is to investigate the effect of production flexibility in decision making in a sugar cane plant under the Real Options theory approach. It was considered a sugar cane plant with the option to switch output and with the option to temporary shutdown. Under these conditions, we sought to quantify the marginal effect of such flexibilities on the decision-making. The methodology employs Monte Carlo simulations to estimate the effect of options in the investment's value. The results obtained indicate that decision-making models with flexibilities can increase the expected value of the Net Present Value by up to 88.14 % and reduce the risk of Net Present Value being negative, especially when considering the temporary shutdown option. Finally, this paper proposes that flexibilities bring greater returns to sugar cane plants, allowing to mitigate the effects of crises in the sector.</p></div>","PeriodicalId":100250,"journal":{"name":"Cleaner and Circular Bioeconomy","volume":"7 ","pages":"Article 100074"},"PeriodicalIF":0.0,"publicationDate":"2024-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772801324000034/pdfft?md5=cd61d89179234a8dacb2c451b99fca61&pid=1-s2.0-S2772801324000034-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139888141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Environmental impact of conventional vs. organic apples: A life cycle assessment of Washington state's exports to Mexico City","authors":"Morales Brizard Magdalena ,&nbsp;Rivera-Huerta Adriana ,&nbsp;Güereca Leonor Patricia ,&nbsp;Padilla-Rivera Alejandro","doi":"10.1016/j.clcb.2024.100076","DOIUrl":"10.1016/j.clcb.2024.100076","url":null,"abstract":"<div><p>In recent decades, global agriculture has been dominated by conventional practices associated with negative impacts such as the loss of biodiversity, changes in land use, habitat degradation and pollution. Faced with the urgent need of a sustainable shift, the organic scheme has emerged as an alternative to minimize agriculture's environmental footprint, requiring an assessment of the real impacts of both production methods. By means of a Life Cycle Assessment (LCA), the aim of this research is to evaluate the environmental impacts of conventional and organic apples with a cradle to grave approach. Apples grown in Washington state and consumed in Mexico City are considered as a case study and analyzed through seventeen impact categories. The results highlight five main findings. First, pesticides are identified as the main source of toxicity in the conventional model, underlining the relevance of biological pest control. Although the organic model does use authorized pesticides, these did not represent a significant impact. Second, the use of cardboard boxes for packaging implies changes in agricultural land occupation, as well as the use of plastic bags that impacts climate change, calling for no-waste or reduced packaging. Third, transportation is a key contributor to fossil depletion and climate change, noting the importance local production. Fourth, the final disposal of apples residues in landfills has implications for eutrophication, bringing out the importance of composting residues. Fifth, conventional apple production has a higher environmental footprint in most impact categories when compared to organic production for both surface-based and mass-based functional units. As such, this study recommends the production and consumption of local and in-season organic apples to reduce the negative environmental impacts and the effects on human health.</p></div>","PeriodicalId":100250,"journal":{"name":"Cleaner and Circular Bioeconomy","volume":"7 ","pages":"Article 100076"},"PeriodicalIF":0.0,"publicationDate":"2024-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772801324000058/pdfft?md5=ced00b7e9a704489be1ec51f017d78fd&pid=1-s2.0-S2772801324000058-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139826056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"How do sustainability policies emerge in the Colombian political system? A Kaleidoscope Model Analysis of the Policy for Sustainable Cattle 2022–2050","authors":"Manuel Francisco Díaz Baca ,&nbsp;Leonardo Moreno Lerma ,&nbsp;Stefan Burkart","doi":"10.1016/j.clcb.2024.100075","DOIUrl":"https://doi.org/10.1016/j.clcb.2024.100075","url":null,"abstract":"<div><p>Environmental concerns such as deforestation, loss of biodiversity, and greenhouse gas emissions have reached preoccupying levels globally, for which the governments of different countries have committed to mitigation actions. In Colombia, one of the most ambitious initiatives to contribute to the commitments is the Policy for Sustainable Cattle 2022–2050 (<em>Política para la Ganadería Bovina Sostenible 2022–2050</em>), whose purpose is to promote the transition from traditional cattle farming to sustainable production systems and value chains. This study analyzes the construction process of the policy and determines the factors that allowed the change in public policies towards more sustainability. For this, a documentary analysis is carried out with a qualitative-descriptive approach consulting primary and secondary sources. As a theoretical framework, the Kaleidoscope Model of Policy Change is used, emphasizing on the first three stages, namely a) Agenda Setting, b) Design, and c) Adoption, and delving into the fourth stage of Implementation. The results reveal that multiple factors allowed the development of the policy, such as the need to face the environmental crisis, international summits that highlighted the problem, previous policies and, in general, an accumulation of experiences and knowledge. It became also evident that the main challenges for this policy have been the lack of coordination among the different national governments, as had its own vision of sustainability, in addition to the complexity of coordinating sustainability and competitiveness criteria among the ministries. It is concluded that although the development of the policy is a first step in the transition to sustainability, there are still many challenges ahead for change to be expressed in concrete actions.</p></div>","PeriodicalId":100250,"journal":{"name":"Cleaner and Circular Bioeconomy","volume":"7 ","pages":"Article 100075"},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772801324000046/pdfft?md5=74e77f738aac23d530c0bcefdaf45d27&pid=1-s2.0-S2772801324000046-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139719572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identifying feed characteristics that affect the pellet manufacturing of livestock diets containing different coproducts","authors":"T.M.M. Bastiaansen ,&nbsp;S. de Vries ,&nbsp;B.M.J. Martens ,&nbsp;R.T. Benders ,&nbsp;E. Vissers ,&nbsp;J.A. Dijksman ,&nbsp;W.H. Hendriks ,&nbsp;M. Thomas ,&nbsp;G. Bosch","doi":"10.1016/j.clcb.2024.100073","DOIUrl":"10.1016/j.clcb.2024.100073","url":null,"abstract":"<div><p>As part of the transition to circular agriculture and to reduce food-feed competition for arable land, the inclusion of coproducts in livestock feed is expected to increase. Pellet manufacturing allows for improving the handling properties of livestock feed, but the effect of fibrous coproducts on the process is poorly understood. Inclusion of coproducts is considered to affect the physicochemical characteristics of a feed mash, and subsequently pellet manufacturing. To understand how coproducts can effectively be incorporated in pellet manufacturing, we investigated the effect of the inclusion of 300 g/kg of various fibrous coproducts, differing in fibrous composition, in feed mash containing 700 g/kg of basic mash, containing soybean meal, maize and soy oil, on mash physicochemical properties and pellet manufacturing. Treatment mashes were prepared in singleton, steam-conditioned and compacted using a ring-die pelletizer. Physical pellet quality, production capacity, and energy consumption of the pellet press were evaluated per treatment mash. Mash physicochemical properties were evaluated by determining hydration properties (i.e. water binding capacity and sorption analyses) and thermomechanical properties (i.e. phase transition and capillary rheometric analysis). Pellet durability varied among treatments (15.8–91.1 %), as did total energy costs of compaction (28.0–38.7 kWh/tonne). Principal component analysis indicated that higher levels of insoluble fibre in a feed mash associated with increased shear stress during capillary rheometric analysis. Combinedly these parameters reduced production capacity (<em>R² =</em> 0.25; <em>P</em> <em>=</em> 0.046) and increased required energy consumption by the pellet press (<em>R² =</em> 0.30; <em>P</em> <em>=</em> 0.03), but could only limitedly explain variation among treatments. In conclusion, the inclusion of coproducts with higher or lower levels of fibre did not consistently affect physical pellet quality. The overall low pellet durability (&lt;90%) of all treatments, however, illustrates the challenge for the pellet manufacturing of diets containing fibrous coproducts. In addition the effects on energy costs of production should be considered during feed formulation.</p></div>","PeriodicalId":100250,"journal":{"name":"Cleaner and Circular Bioeconomy","volume":"7 ","pages":"Article 100073"},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772801324000022/pdfft?md5=1a30b385823d15f89ee8569d693ca868&pid=1-s2.0-S2772801324000022-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139825998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identifying feed characteristics that affect the pellet manufacturing of livestock diets containing different coproducts","authors":"Thomas Bastiaansen, S. de Vries, B.M.J. Martens, R. Benders, E. Vissers, J.A. Dijksman, W. H. Hendriks, M. Thomas, G. Bosch","doi":"10.1016/j.clcb.2024.100073","DOIUrl":"https://doi.org/10.1016/j.clcb.2024.100073","url":null,"abstract":"","PeriodicalId":100250,"journal":{"name":"Cleaner and Circular Bioeconomy","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139885752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Environmental Impact of Conventional vs. Organic Apples: A Life Cycle Assessment of Washington State's Exports to Mexico City","authors":"Morales Brizard Magdalena, Rivera-Huerta Adriana, Güereca Leonor Patricia, Padilla-Rivera Alejandro","doi":"10.1016/j.clcb.2024.100076","DOIUrl":"https://doi.org/10.1016/j.clcb.2024.100076","url":null,"abstract":"","PeriodicalId":100250,"journal":{"name":"Cleaner and Circular Bioeconomy","volume":"7 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139885984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}