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https://www.readbyqxmd.com/read/28811160/high-efficiency-removal-of-lead-from-wastewater-by-biochar-derived-from-anaerobic-digestion-sludge
#1
Shih-Hsin Ho, Yi-di Chen, Zhong-Kai Yang, Dillirani Nagarajan, Jo-Shu Chang, Nan-Qi Ren
The properties of biochar derived from waste activated sludge and anaerobic digestion sludge under pyrolysis temperature varying from 400°C to 800°C were investigated. The heavy metals adsorption efficiency of the sludge-derived biochar was also examined. Among the biochar samples tested, ADSBC600 possessing highly porous structure, special surface chemical behaviors and high thermal stability was found to remove Pb(2+) from aqueous solutions efficiently with an adsorption capacity of 51.20mg/g. The Pb(2+) adsorption kinetics and isotherm for ADSBC600 can be described using the pseudo second-order model and Langmuir isotherm, respectively...
August 7, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28806506/quantifying-recycling-and-losses-of-cr-and-ni-in-steel-throughout-multiple-life-cycles-using-matrace-alloy
#2
Shinichiro Nakamura, Yasushi Kondo, Kenichi Nakajima, Hajime Ohno, Stefan Pauliuk
Alloying metals are indispensable ingredients of high quality alloy steel such as austenitic stainless steel, the cyclical use of which is vital for sustainable resource management. Under the current practice of recycling, however, different metals are likely to be mixed in an uncontrolled manner, resulting in function losses and dissipation of metals with distinctive functions, and in the contamination of recycled steels. The latter could result in dilution loss, if metal scrap needed dilution with virgin iron to reduce the contamination below critical levels...
August 14, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28803063/cascading-biomethane-energy-systems-for-sustainable-green-gas-production-in-a-circular-economy
#3
REVIEW
David M Wall, Shane McDonagh, Jerry D Murphy
Biomethane is a flexible energy vector that can be used as a renewable fuel for both the heat and transport sectors. Recent EU legislation encourages the production and use of advanced, third generation biofuels with improved sustainability for future energy systems. The integration of technologies such as anaerobic digestion, gasification, and power to gas, along with advanced feedstocks such as algae will be at the forefront in meeting future sustainability criteria and achieving a green gas supply for the gas grid...
July 23, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28782012/comment-on-marine-plastic-debris-emits-a-keystone-infochemical-for-olfactory-foraging-seabirds-by-savoca-et-al
#4
Gaia Dell'Ariccia, Richard A Phillips, Jan A van Franeker, Nicolas Gaidet, Paulo Catry, José P Granadeiro, Peter G Ryan, Francesco Bonadonna
In their recent paper, Savoca and collaborators (2016) showed that plastic debris in the ocean may acquire a dimethyl sulfide (DMS) signature from biofouling developing on their surface. According to them, DMS emission may represent an olfactory trap for foraging seabirds, which explains patterns of plastic ingestion among procellariiform seabirds. This hypothesis is appealing, but some of the data that Savoca et al. used to support their claim are questionable, resulting in a misclassification of species, as well as other decisions regarding the variables to include in their models...
June 2017: Science Advances
https://www.readbyqxmd.com/read/28777062/circular-economy-permanent-materials-and-limitations-to-recycling-where-do-we-stand-and-what-is-the-way-forward
#5
(no author information available yet)
No abstract text is available yet for this article.
August 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28772461/properties-of-residue-from-olive-oil-extraction-as-a-raw-material-for-sustainable-construction-materials-part-i-physical-properties
#6
Almudena Díaz-García, Carmen Martínez-García, Teresa Cotes-Palomino
Action on climate, the environment, and the efficient use of raw materials and resources are important challenges facing our society. Against this backdrop, the construction industry must adapt to new trends and environmentally sustainable construction systems, thus requiring lines of research aimed at keeping energy consumption in new buildings as low as possible. One of the main goals of this research is to efficiently contribute to reducing the amount of residue from olive oil extraction using a two-phase method...
January 25, 2017: Materials
https://www.readbyqxmd.com/read/28771985/how-to-access-and-exploit-natural-resources-sustainably-petroleum-biotechnology
#7
Angela Sherry, Luiza Andrade, Anne Velenturf, Beate Christgen, Neil D Gray, Ian M Head
As we transition from fossil fuel reliance to a new energy future, innovative microbial biotechnologies may offer new routes to maximize recovery from conventional and unconventional energy assets; as well as contributing to reduced emission pathways and new technologies for carbon capture and utilization. Here we discuss the role of microbiology in petroleum biotechnologies in relation to addressing UN Sustainable Development Goal 12 (ensure sustainable consumption and production patterns), with a focus on microbially-mediated energy recovery from unconventionals (heavy oil to methane), shale gas and fracking, bioelectrochemical systems for the production of electricity from fossil fuel resources, and innovations in synthetic biology...
August 3, 2017: Microbial Biotechnology
https://www.readbyqxmd.com/read/28728973/sewer-mining-a-water-reuse-option-supporting-circular-economy-public-service-provision-and-entrepreneurship
#8
C Makropoulos, E Rozos, I Tsoukalas, A Plevri, G Karakatsanis, L Karagiannidis, E Makri, C Lioumis, C Noutsopoulos, D Mamais, C Rippis, E Lytras
Water scarcity, either due to increased urbanisation or climatic variability, has motivated societies to reduce pressure on water resources mainly by reducing water demand. However, this practice alone is not sufficient to guarantee the quality of life that high quality water services underpin, especially within a context of increased urbanisation. As such, the idea of water reuse has been gaining momentum for some time and has recently found a more general context within the idea of the Circular Economy. This paper is set within the context of an ongoing discussion between centralized and decentralized water reuse techniques and the investigation of trade-offs between efficiency and economic viability of reuse at different scales...
July 17, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28709690/municipal-solid-waste-system-analysis-through-energy-consumption-and-return-approach
#9
Tihomir Tomić, Daniel Rolph Schneider
Inappropriate waste management and poor resource efficiency are two of the biggest problems which European Union is trying to solve through Landfill Directive, Waste Framework Directive and Circular Economy Package by increasing recycling and reuse and reducing waste disposal. In order to meet set goals, new European Union member states must quickly change national legislature and implement appropriate solutions. In the circumstances of strong EU resource and energy dependence, decision makers need to analyse which of the considered waste management systems leads to higher overall benefits ie...
July 11, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28698129/an-efficient-agro-industrial-complex-in-almer%C3%A3-a-spain-towards-an-integrated-and-sustainable-bioeconomy-model
#10
REVIEW
Francisco J Egea, Roberto G Torrente, Alfredo Aguilar
In the last ten years, bioeconomy strategies and policy-related bioeconomy initiatives have been developed all over the world. Some of them are currently in the process of translation into specific actions. In most cases, the approaches followed have been top-down policy-related initiatives, triggered by the public sector originating a dynamic which can bring together different bioeconomy stakeholders i.e. industry, academia, financial operators and farmers. This article describes a bottom-up situation with unique bioeconomy-related features that deserve specific attention...
July 8, 2017: New Biotechnology
https://www.readbyqxmd.com/read/28693674/the-imperative-for-regenerative-agriculture
#11
Christopher J Rhodes
A review is made of the current state of agriculture, emphasising issues of soil erosion and dependence on fossil fuels, in regard to achieving food security for a relentlessly enlarging global population. Soil has been described as "the fragile, living skin of the Earth", and yet both its aliveness and fragility have all too often been ignored in the expansion of agriculture across the face of the globe. Since it is a pivotal component in a global nexus of soil-water-air-energy, how we treat the soil can impact massively on climate change - with either beneficial or detrimental consequences, depending on whether the soil is preserved or degraded...
March 1, 2017: Science Progress
https://www.readbyqxmd.com/read/28689129/the-potential-implications-of-reclaimed-wastewater-reuse-for-irrigation-on-the-agricultural-environment-the-knowns-and-unknowns-of-the-fate-of-antibiotics-and-antibiotic-resistant-bacteria%C3%A2-and-resistance-genes-a-review
#12
REVIEW
Anastasis Christou, Ana Agüera, Josep Maria Bayona, Eddie Cytryn, Vasileios Fotopoulos, Dimitra Lambropoulou, Célia M Manaia, Costas Michael, Mike Revitt, Peter Schröder, Despo Fatta-Kassinos
The use of reclaimed wastewater (RWW) for the irrigation of crops may result in the continuous exposure of the agricultural environment to antibiotics, antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs). In recent years, certain evidence indicate that antibiotics and resistance genes may become disseminated in agricultural soils as a result of the amendment with manure and biosolids and irrigation with RWW. Antibiotic residues and other contaminants may undergo sorption/desorption and transformation processes (both biotic and abiotic), and have the potential to affect the soil microbiota...
July 3, 2017: Water Research
https://www.readbyqxmd.com/read/28676418/waste-derived-bioeconomy-in-india-a-perspective
#13
REVIEW
Venkata Mohan S, Chiranjeevi P, Shikha Dahiya, Naresh Kumar A
Environmental and climatic change issues, population explosion, rapid urbanization, depletion of fossil reserves, need for energy security, huge waste generation, etc. are some of the inherent issues associated with the fossil based linear economy which need sustainable attention. In this realm, the world is gradually transforming from fossil-based economy to a sustainable circular economy. The biogenic waste which is generated in enormous quantity in India can be considered as potential feedstock for structuring the bio-based economy...
July 1, 2017: New Biotechnology
https://www.readbyqxmd.com/read/28676417/eu-ambition-to-build-the-world-s-leading-bioeconomy-uncertain-times-demand-innovative-and-sustainable-solutions
#14
REVIEW
John Bell, Lino Paula, Thomas Dodd, Szilvia Németh, Christina Nanou, Voula Mega, Paula Campos
This article outlines the current context and the development of the European Bioeconomy Strategy. It analyses the current situation, challenges and needs for EU action and concludes with the next steps that the European Commission will undertake to review and update the Bioeconomy Strategy. Bioeconomy offers great opportunities to realising a competitive, circular and sustainable economy with a sound industrial base that is less dependent on fossil carbon. A sustainable bioeconomy also contributes to climate change mitigation, with oceans, forests and soils being major carbon sinks and fostering negative CO2 emissions...
July 1, 2017: New Biotechnology
https://www.readbyqxmd.com/read/28672044/life-cycle-energy-efficiency-and-environmental-impact-assessment-of-bioethanol-production-from-sweet-potato-based-on-different-production-modes
#15
Jun Zhang, Chunrong Jia, Yi Wu, Xunfeng Xia, Beidou Xi, Lijun Wang, Youlong Zhai
The bioethanol is playing an increasingly important role in renewable energy in China. Based on the theory of circular economy, integration of different resources by polygeneration is one of the solutions to improve energy efficiency and to reduce environmental impact. In this study, three modes of bioethanol production were selected to evaluate the life cycle energy efficiency and environmental impact of sweet potato-based bioethanol. The results showed that, the net energy ratio was greater than 1 and the value of net energy gain was positive in the three production modes, in which the maximum value appeared in the circular economy mode (CEM)...
2017: PloS One
https://www.readbyqxmd.com/read/28669496/using-choice-architecture-to-exploit-a-university-distinct-urban-mine
#16
REVIEW
Xavier Pierron, Ian D Williams, Peter J Shaw, Victoria Cleaver
There are widespread concerns regarding the potential future scarcity of ferrous and non-ferrous materials. However, there are already potentially rich reserves of secondary materials via high ownership of Electrical and Electronic Equipment (EEE) in economically-developed nations. Young people are particularly high consumers of EEE, thus university students and campuses may present an opportunity to harness this potential. University Distinct Urban Mines (DUM) may be used to exemplify how potential reserves of secondary metals may be exploited, and could contribute to the transition from a linear to a circular economy...
June 29, 2017: Waste Management
https://www.readbyqxmd.com/read/28666809/bio-based-industries-joint-undertaking-the-catalyst-for-sustainable-bio-based-economic-growth-in-europe
#17
REVIEW
Philippe Mengal, Marcel Wubbolts, Eleni Zika, Ana Ruiz, Dieter Brigitta, Agata Pieniadz, Sarah Black
This article discusses the preparation, structure and objectives of the Bio-based Industries Joint Undertaking (BBI JU). BBI JU is a public-private partnership (PPP) between the European Commission (EC) and the Bio-based Industries Consortium (BIC), the industry-led private not-for-profit organisation representing the private sectors across the bio-based industries. The model of the public-private partnership has been successful as a new approach to supporting research and innovation and de-risking investment in Europe...
June 27, 2017: New Biotechnology
https://www.readbyqxmd.com/read/28623021/improving-the-circular-economy-via-hydrothermal-processing-of-high-density-waste-plastics
#18
Thomas Helmer Pedersen, Federica Conti
Rising environmental concerns on climate changes are causing an increasing attention on circular economies. The plastic economy, in particular, is in focus due to the accelerating consumption of plastics, mainly derived from virgin feedstock, combined with the lack of plastic recycling strategies. This work presents a novel outlook on the potential of using supercritical hydrothermal processing of waste plastic fractions for tertiary recycling. The study investigates hydrothermal processing of nine different, high-density types of plastics into original resin monomers and other value-added chemical compounds...
June 13, 2017: Waste Management
https://www.readbyqxmd.com/read/28579178/waste-biorefineries-enabling-circular-economies-in-developing-countries
#19
REVIEW
A S Nizami, M Rehan, M Waqas, M Naqvi, O K M Ouda, K Shahzad, R Miandad, M Z Khan, M Syamsiro, I M I Ismail, Deepak Pant
This paper aims to examine the potential of waste biorefineries in developing countries as a solution to current waste disposal problems and as facilities to produce fuels, power, heat, and value-added products. The waste in developing countries represents a significant source of biomass, recycled materials, chemicals, energy, and revenue if wisely managed and used as a potential feedstock in various biorefinery technologies such as fermentation, anaerobic digestion (AD), pyrolysis, incineration, and gasification...
October 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28576329/incentivizing-secondary-raw-material-markets-for-sustainable-waste-management
#20
Maximilian Schreck, Jeffrey Wagner
Notwithstanding several policy initiatives in many countries over a number of years, there remains a general sense that too much municipal solid waste is generated and that too much of the waste that is generated is landfilled. There is an emerging consensus that a sustainable approach to waste management requires further development of secondary raw material markets. The purpose of this paper is to propose a theoretical economic model that focuses upon this stage of a sustainable waste management program and explores policy options that could motivate efficiency in secondary raw material markets...
May 30, 2017: Waste Management
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