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circular economy

Kim H Esbensen, Costas Velis
No abstract text is available yet for this article.
December 2016: Waste Management & Research
Qun Kang, Rui Li, Qi Du, Bowen Cheng, Zhiqi Liao, Chengcheng Sun, Zhaohua Li
This study aimed to explore the ecological adaptability and the possibility of growing rice with floating bed on the dilute biogas slurry. The results of the experiments show that the growth stage, rice plant height, and rice yield and quality were significantly affected by multiple dilutions; rice plants cultivated with 45 multiple dilutions had better ecological adaptability than others. In the 45 multiple dilutions' group, the yield of rice was 13.3 g/bucket (8 rice plants), milled rice rate was 63.1%, and the content of crude protein in the rice was 6...
2016: BioMed Research International
Rafael Laurenti, Åsa Moberg, Åsa Stenmarck
Knowledge about the total waste generated by the production of consumer goods can help raise awareness among policy-makers, producers and consumers of the benefits of closing loops in a future circular economy, avoiding unnecessary production and production steps and associated generation of large amounts of waste. In strict life cycle assessment practice, information on waste outputs from intermediate industrial processes of material and energy transformation is translated into and declared as potential environmental impacts, which are often not reported in the final results...
November 10, 2016: Waste Management & Research
Bojan Ribic, Neven Voca, Branka Ilakovac
Improvement of the current waste management is one of the main challenges for most municipalities in Croatia, mainly due to legal obligations set in different European Union directives regarding waste management, such as reduction of waste generation and landfilling, or increase of separately collected waste and recycling rates. This article highlights the current waste management in the City of Zagreb by analysing the waste generation, collection, and disposal scenario along with the regulatory and institutional framework...
September 20, 2016: Journal of the Air & Waste Management Association
Ellen Brand, Ton C M de Nijs, Joris J Dijkstra, Rob N J Comans
As part of a more circular economy, current attention on waste is shifting from landfilling towards the prevention, re-use and recycling of waste materials. Although the need for landfills is decreasing, there are many landfills around the world that are still operational or at the point of starting the aftercare period. With traditional aftercare management, these landfills require perpetual aftercare at considerable cost due to monitoring and regular maintenance of liners. In an attempt to lower these aftercare costs, and to prevent that future generations become responsible for finding a sustainable solution of present day waste, the Dutch government takes action to explore the possibilities of sustainable landfill management...
October 2016: Waste Management
Auxiliadora Prieto
Global warming, market and production capacity are being the key drivers for selecting the main players for the next decades in the market of bio-based plastics. The drop-in bio-based polymers such as the bio-based polyethylene terephtalate (PET) or polyethylene (PE), chemically identical to their petrochemical counterparts but having a component of biological origin, are in the top of the list. They are followed by new polymers such as PHA and PLA with a significant market growth rate since 2014 with projections to 2020...
September 2016: Microbial Biotechnology
Anne Scheinberg, Jelena Nesić, Rachel Savain, Pietro Luppi, Portia Sinnott, Flaviu Petean, Flaviu Pop
The European Union hosts some of the world's most developed waste management systems and an ambitious policy commitment to the circular economy. The existence of informal recycling and re-use activities in Europe has been vigorously denied until quite recently, and remains a very challenging subject for the European solid waste management sector, as well as for European government and private institutions. In countries ranging from Malta to Macedonia and from France to Turkey, informal recyclers excluded from legal recycling niches increasingly collide with formalised and controlled European Union approaches to urban waste management, packaging recovery schemes, formal re-use enterprises, and extended producer responsibility systems...
September 2016: Waste Management & Research
Ramy Salemdeeb, Abir Al-Tabbaa, Christian Reynolds
In order to achieve a circular economy, there must be a greater understanding of the links between economic activity and waste generation. This study introduces the first version of the UK waste input-output table that could be used to quantify both direct and indirect waste arisings across the supply chain. The proposed waste input-output table features 21 industrial sectors and 34 waste types and is for the 2010 time-period. Using the waste input-output table, the study results quantitatively confirm that sectors with a long supply chain (i...
October 2016: Waste Management & Research
E D Bluemink, A F van Nieuwenhuijzen, E Wypkema, C A Uijterlinde
Valorisation of components from municipal 'waste' water and sewage sludge gets more and more attention in order to come to a circular economy by developing an efficient 'waste' to value concept. On behalf of the transition team 'Grondstoffenfabriek' ('Resource factory') a preliminary research was performed for all the Dutch water boards to assess the technical and economical feasibility of poly-hydroxy-alkanoate (PHA)-production from sewage sludge, a valuable product to produce bio-plastics. This study reveals that the production of bio-plastics from sewage sludge is feasible based on technical aspects, but not yet economically interesting, even though the selling price is relatively close to the actual PHA market price...
2016: Water Science and Technology: a Journal of the International Association on Water Pollution Research
Yuanyao Ye, Huu Hao Ngo, Wenshan Guo, Yiwen Liu, Xinbo Zhang, Jianbo Guo, Bing-Jie Ni, Soon Woong Chang, Dinh Duc Nguyen
The world's increasing population means that more food production is required. A more sustainable supply of fertilizers mainly consisting of phosphate is needed. Due to the rising consumption of scarce resources and limited natural supply of phosphate, the recovery of phosphate and their re-use has potentially high market value. Sewage has high potential to recover a large amount of phosphate in a circular economy approach. This paper focuses on utilization of biological process integrated with various subsequent processes to concentrate and recycle phosphate which are derived from liquid and sludge phases...
October 2016: Bioresource Technology
K Stoknes, F Scholwin, W Krzesiński, E Wojciechowska, A Jasińska
At urban locations certain challenges are concentrated: organic waste production, the need for waste treatment, energy demand, food demand, the need for circular economy and limited area for food production. Based on these factors the project presented here developed a novel technological approach for processing organic waste into new food. In this system, organic waste is converted into biogas and digester residue. The digester residue is being used successfully as a stand-alone fertilizer as well as main substrate component for vegetables and mushrooms for the first time - a "digeponics" system - in a closed new low energy greenhouse system with dynamic soap bubble insulation...
October 2016: Waste Management
Alberto Bezama
No abstract text is available yet for this article.
July 2016: Waste Management & Research
J Laso, M Margallo, J Celaya, P Fullana, A Bala, C Gazulla, A Irabien, R Aldaco
The anchovy canning industry has high importance in the Cantabria Region (North Spain) from economic, social and touristic points of view. The Cantabrian canned anchovy is world-renowned owing to its handmade and traditional manufacture. The canning process generates huge amounts of several food wastes, whose suitable management can contribute to benefits for both the environment and the economy, closing the loop of the product life cycle. Life cycle assessment methodology was used in this work to assess the environmental performance of two waste management alternatives: Head and spine valorisation to produce fishmeal and fish oil; and anchovy meat valorisation to produce anchovy paste...
August 2016: Waste Management & Research
Thallada Bhaskar, Jo-Shu Chang, Samir Khanal, Duu-Jong Lee, S Venkata Mohan, Bruce E Rittmann
No abstract text is available yet for this article.
September 2016: Bioresource Technology
Hristina Stevanovic-Carapina, Jelena Milic, Marijana Curcic, Jasminka Randjelovic, Katarina Krinulovic, Aleksandar Jovovic, Zvonko Brnjas
Sustainable solid waste management needs more dedicated attention in respect of environmental and human health protection. Solid waste containing persistent organic pollutants is of special concern, since persistent organic pollutants are persistent, toxic and of high risk to human health and the environment. The objective of this investigation was to identify critical points in the Serbian system of solid waste and persistent organic pollutants management, to assure the life cycle management of persistent organic pollutants and products containing these chemicals, including prevention and final destruction...
July 2016: Waste Management & Research
H A Leslie, P E G Leonards, S H Brandsma, J de Boer, N Jonkers
The Stockholm Convention bans toxic chemicals on its persistent organic pollutants (POPs) list in order to promote cleaner production and prevent POPs accumulation in the global environment. The original 'dirty dozen' set of POPs has been expanded to include some of the brominated diphenyl ether flame retardants (POP-BDEs). In addition to cleaner production, there is an urgent need for increased resource efficiency to address the finite amount of raw materials on Earth. Recycling plastic enhances resource efficiency and is part of the circular economy approach, but how clean are the materials we are recycling? With the help of a new screening method and detailed analyses, we set out to investigate where these largely obsolete BDEs were showing up in Dutch automotive and electronics waste streams, calculate mass flows and determine to what extent they are entering the new product chains...
September 2016: Environment International
Piergiuseppe Morone, Rodrigo Navia
No abstract text is available yet for this article.
June 2016: Waste Management & Research
Henriette Naims
Lately, the technical research on carbon dioxide capture and utilization (CCU) has achieved important breakthroughs. While single CO2-based innovations are entering the markets, the possible economic effects of a large-scale CO2 utilization still remain unclear to policy makers and the public. Hence, this paper reviews the literature on CCU and provides insights on the motivations and potential of making use of recovered CO2 emissions as a commodity in the industrial production of materials and fuels. By analyzing data on current global CO2 supply from industrial sources, best practice benchmark capture costs and the demand potential of CO2 utilization and storage scenarios with comparative statics, conclusions can be drawn on the role of different CO2 sources...
November 2016: Environmental Science and Pollution Research International
Ottavia Zoboli, Matthias Zessner, Helmut Rechberger
Protecting water bodies from eutrophication, ensuring long-term food security and shifting to a circular economy represent compelling objectives to phosphorus management strategies. This study determines how and to which extent the management of phosphorus in Austria can be optimized. A detailed national model, obtained for the year 2013 through Material Flow Analysis, represents the reference situation. Applicability and limitations are discussed for a range of actions aimed at reducing consumption, increasing recycling, and lowering emissions...
September 15, 2016: Science of the Total Environment
Michele Seghetta, Ditte Tørring, Annette Bruhn, Marianne Thomsen
The aim of the study is to assess the efficacy of seaweed for circular nutrient management to reduce eutrophication levels in the aquatic environment. We performed a comparative Life Cycle Assessment (LCA) of two reference waste management systems treating seaweed as biowaste, i.e. landfill disposal and combustion, and an alternative scenario using the seaweed Saccharina latissima as a resource for biobased fertilizer production. Life Cycle Impact Assessment (LCIA) methods were improved by using a cradle-to-cradle approach, quantifying fate factors for nitrogen and phosphorus loss from fertilized agriculture to the aquatic environment...
September 1, 2016: Science of the Total Environment
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