E-Waste Recycling by Electrostatic Separation

2015 ◽  
pp. 285-317 ◽  
Author(s):  
Gordan Bedeković
Keyword(s):  
Copper Content ◽  
Short Review ◽  
Waste Recycling ◽  
Product Complexity ◽  
Waste Streams ◽  
Electrostatic Separation ◽  
Separation Processes ◽  
Cathode Tube ◽  
Mechanical Separation

This chapter discusses the problem of Waste Electric and Electronic Equipment (WEEE) as one of the largest growing waste streams globally, the influence of the product complexity and liberation in separation, and the basics of electrostatic separation. A very short review of mechanical separation processes is given and research conducted on one fraction of CRT TV set is presented. A CRT TV set fraction with higher copper content consists of yokes of a cathode tube, cables, connectors, and wires, which were tested by electrostatic separation method. The aim of this research is to evaluate the effectiveness of electrostatic separation, to determine and rank the influence of separator operating parameters, and to set models for assessment of the concentration quality and recovery of metals. The results show that it is possible to achieve a high quality of concentrates (metal content from 77 to 100%), while recovery varies greatly (from 10 to 99%).

scholarly journals Assessment of the Electrostatic Separation Effectiveness of Plastic Waste Using a Vision System

Sensors ◽  
2020 ◽  
Vol 20 (24) ◽  
pp. 7201
Author(s):  
Dominik Rybarczyk ◽  
Cezary Jędryczka ◽  
Roman Regulski ◽  
Dariusz Sędziak ◽  
Krzysztof Netter ◽  
...  
Keyword(s):  
Vision System ◽  
Accurate Method ◽  
Separation Process ◽  
Polymer Materials ◽  
Electrostatic Separation ◽  
Plastic Materials ◽  
First Results ◽  
Mechanical Separation ◽  
Separation Of Mixtures

The work presented here describes the first results of an effective method of assessing the quality of electrostatic separation of mixtures of polymer materials. The motivation for the research was to find an effective method of mechanical separation of plastic materials and a quick assessment of the effectiveness of the method itself. The proposed method is based on the application of a dedicated vision system developed for needs of research on electrostatic separation. The effectiveness of the elaborated system has been demonstrated by evaluating the quality of the separation of mixtures of poly (methyl methacrylate) (PMMA) and polystyrene (PS). The obtained results show that the developed vision system can be successfully employed in the research on plastic separation, providing a fast and accurate method of assessing the purity and effectiveness of the separation process.

Bioconjugation of SERS nanotags and increasing the reproducibility of results

2016 ◽  
Vol 18 (1-2) ◽  
Author(s):  
Mohammad Salehi ◽  
Angela Hamann-Steinmeier
Keyword(s):  
Reproducibility Of Results ◽  
Short Review ◽  
Medical Diagnostics ◽  
Spectroscopy Technique ◽  
Sers Substrates ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Target Molecules

AbstractSurface-enhanced Raman scattering (SERS) is a vibrational spectroscopy technique, which is used in the areas of medical diagnostics. This technique use the advantages of biofunctionalized nanoparticles (NPs) for imaging and quantifying of target molecules such as proteins in assays, cells and tissues. The lack of reliability and reproducibility of the results are major challenges in the application of diagnostics based of SERS substrates. The biofunction and success of nanomedical tasks depends on the quality of each involved element like antibodies (IgGs) and nanostructures before, during and after preparation or conjunction with nanoparticles. This short review summarizes current designs of different SERS substrates and highlights the improvement of particularly simple and gentle conjugation methods for targeting research with SERS labels.

scholarly journals Molecular studies of exercise, skeletal muscle, and ageing

F1000Research ◽  
2016 ◽  
Vol 5 ◽  
pp. 1087 ◽  
Author(s):  
James A. Timmons ◽  
Iain J. Gallagher
Keyword(s):  
Skeletal Muscle ◽  
Research Capacity ◽  
Short Review ◽  
Neuromuscular Function ◽  
Potential Mechanism ◽  
Muscle Exercise ◽  
Methodological Issues ◽  
Physiological Capacity ◽  
New Concepts

The purpose of an F1000 review is to reflect on the bigger picture, exploring controversies and new concepts as well as providing opinion as to what is limiting progress in a particular field. We reviewed about 200 titles published in 2015 that included reference to ‘skeletal muscle, exercise, and ageing’ with the aim of identifying key articles that help progress our understanding or research capacity while identifying methodological issues which represent, in our opinion, major barriers to progress. Loss of neuromuscular function with chronological age impacts on both health and quality of life. We prioritised articles that studied human skeletal muscle within the context of age or exercise and identified new molecular observations that may explain how muscle responds to exercise or age. An important aspect of this short review is perspective: providing a view on the likely ‘size effect’ of a potential mechanism on physiological capacity or ageing.

scholarly journals Survival and quality of life following pancreaticoduodenectomy for pancreatic ductal adenocarcinoma

2021 ◽  
Vol 6 (2) ◽  
Keyword(s):  
Quality Of Life ◽  
Pancreatic Ductal Adenocarcinoma ◽  
Short Review ◽  
Mortality Rates ◽  
Ductal Adenocarcinoma ◽  
Term Survival ◽  
Long Term Survival ◽  
Dismal Prognosis

Pancreatic ductal adenocarcinoma (PDAC) most commonly affects the head of the pancreas. This condition has a dismal prognosis. Patients with early disease may be candidates for pancreaticoduodenectomy (PD). This is a high-risk operation which is associated with considerable morbidity. Whilst perioperative mortality rates have fallen in recent times, the risk remains significant and long-term survival is poor, even in those who make an uncomplicated recovery. Furthermore, PD is known to affect quality of life (QoL) negatively. Most studies suggest it takes up to six months before a patient’s QoL returns to baseline. This is a considerable amount of time for a patient who is unlikely to achieve long-term survival. This short review discusses the recent literature surrounding mortality rates, long-term survival and QoL following PD for PDAC. A comprehensive understanding of these topics will allow clinicians and patients to consider the risks and benefits before surgical resection is considered.

scholarly journals Analysis of the criteria of efficiency of work of separators for the field of hydrocarbon raw

2019 ◽  
pp. 114-119
Author(s):  
Valeriy V. Piven ◽  
Vladislav S. Shchelkonogov
Keyword(s):  
Technological Process ◽  
Raw Materials ◽  
Comprehensive Assessment ◽  
Technological Scheme ◽  
Qualitative Composition ◽  
Separation Processes ◽  
Process Flow ◽  
Multi Stage ◽  
Flow Diagrams

Assessment of the quality of separation of hydrocarbon raw during its field preparation is necessary to determine the efficiency of the entire technological process of preparation. The absence of complex criteria for assessing the quality of separation for multi-stage processes does not allow one to obtain unambiguous solutions in justifying the process flow diagrams and equipment for separation. We have analyzed the typical technological scheme of separation of hydrocarbon raw materials and existing criteria for separation processes. It is proposed to use the criterion for a comprehensive assessment of the separation processes of hydrocarbon raw materials, allowing calculating the efficiency of the process, taking into account the possible production of intermediate fractions and their qualitative composition

scholarly journals Short Review On Varicose Vein And Its Management

2021 ◽  
Vol 12 (1) ◽  
pp. 832-836
Author(s):  
Pranav N ◽  
Anila K N ◽  
Riju.R.Menon
Keyword(s):  
Quality Of Life ◽  
Varicose Vein ◽  
Inflammatory Responses ◽  
Early Stage ◽  
Treatment Strategies ◽  
Short Review ◽  
Disease Diagnosis ◽  
Treated Group ◽  
Severe Condition

A varicose vein is a condition which affects a large number of people in Western countries and India especially, the northern areas. For curing this proper disease diagnosis, sufficient care for patient and treatment strategies are required, to control the symptoms and signs of varicose vein, the flavonoid group of drugs have been widely used for many years. Under this group, Daflon is the most potent and efficient drug which can be used. This enhances the bioavailability and absorption from the gastrointestinal area. Improved quality of patient's life and efficacy makes this drug therapy more potent and significant. Some of the clinical studies have shown its better action for increased venous tone, lymphatic drainage, decreases cosmetic disfigurement, inflammatory responses occur in microcirculation, protection from free radicals and improved quality of life and efficacy. When compared with other available drugs like Polidocanol, Sotradecol, Asclera, Varithena, Sodium tetradecyl sulfate etc. .clinical benefits of Daflon is more. This drug is useful in the early stage and can be used in severe condition along with sclerotherapy, compression treatment and surgery. Increased patient’s quality of life and increased efficacy were observed in Daflon treated group. Thus it is efficacious as a standard therapy alone and also in combination with other conservative treatment.

Nutritional quality of the fresh and processed grey mullet (Mugilidae) products: a short review including data concerning fish from freshwater

2019 ◽  
Vol 32 ◽  
pp. 2 ◽  
Author(s):  
Ines Ben Khemis ◽  
Neila Hamza ◽  
Saloua Sadok
Keyword(s):  
Unsaturated Fatty Acids ◽  
Economic Value ◽  
Short Review ◽  
Essential Amino Acids ◽  
Human Consumption ◽  
Potential Health ◽  
Health Authorities ◽  
Grey Mullets ◽  
Nutritional Benefits

This short review compiles the data concerning the quality of flesh, processed roe and smoked fillets of grey mullets (Mugilidae), including when available the data concerning the fish from freshwater and in particular those from Tunisian reservoirs. The biochemical and mineral composition of the fish, the nutritional benefits and the potential health risks related to the consumption of fish products are discussed with regard to human health, taking into consideration the nutritional recommendations and normative toxicological limits defined by leading health authorities. Flesh proximal compositions of fish from freshwater are relatively scarce, but the few available lipid data are within the very large proximal range (from less than 1% to more than 11%) reported for grey mullets in general. Most of the studies reveal the predominance of unsaturated fatty acids with a substantial proportion ω3 type not only for fish from marine environment but also for those from freshwater. Flesh constitutes a source of essential amino acids and mineral nutrients too. The mullets are generally reported to be safe for human consumption except the fish from heavily contaminated zones. Globally, it should be regarded as an interesting contribution to a healthy diet. The mullets are also greatly appreciated for the production of salted and dried roe as well as smoked fillets, which allow increasing their economic value while preserving products health beneficial attributes. Data concerning processing mullet's roe from freshwater are missing, but it may be supposed that these roes have acceptable texture, taste and flavour as they are highly sought by connoisseurs. It is recommended to perform studies on the qualities of freshwater mullet's roe and to look for labelling the origin for both the roes and the smoked fillets of mullet from Tunisian reservoirs dedicated to the production of drinking water as it would guarantee that the fish come from unpolluted environments.

Variation Risk Management Using Modeling and Simulation

1999 ◽  
Vol 121 (2) ◽  
pp. 297-304 ◽  
Author(s):  
A. C. Thornton
Keyword(s):  
Manufacturing Firms ◽  
Design Team ◽  
Improve Quality ◽  
Product Complexity ◽  
Design And Manufacturing ◽  
Graphical View ◽  
Risk Areas ◽  
Tool Set ◽  
The Impact

Design and manufacturing firms are under significant pressure to simultaneously increase product complexity, reduce design cycles, decrease cost, and improve quality. A key enabler to reduce cost without sacrificing quality is the control of variation during both design and manufacturing. The best time to reduce the impact of variation is in the early stages of design. This paper presents a tool set used to identify, early in the design process, where variation will have significant impact on the final cost and quality of a product. It presents the design team with a graphical view of variation risk, enabling them to quickly identify high-risk areas. The uncertainty about process capability and risk is also quantified and presented to the user.

scholarly journals Product Complexity, Quality of Institutions and the Protrade Effect of Immigrants

World Economy ◽  
2013 ◽  
Vol 37 (1) ◽  
pp. 63-85 ◽  
Author(s):  
Anthony Briant ◽  
Pierre-Philippe Combes ◽  
Miren Lafourcade
Keyword(s):  
Product Complexity ◽  
Quality Of Institutions
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