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Recent Advances in Hydro- and Biohydrometallurgy

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ISBN: 9783039212996 9783039213009 Year: Pages: 212 DOI: 10.3390/books978-3-03921-300-9 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2019-08-28 11:21:27
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This Special Issue of Minerals presents recent, select studies that highlight advances in the fields of hydro- and biohydrometallurgy. It aims to attract the interest of readers and especially of young scientists and students in this fascinating scientific discipline.

Materials for Nuclear Waste Immobilization

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ISBN: 9783039218462 9783039218479 Year: Pages: 220 DOI: 10.3390/books978-3-03921-847-9 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: General and Civil Engineering --- Technology (General)
Added to DOAB on : 2020-01-30 16:39:46
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The book outlines recent advances in nuclear wasteform materials including glasses, ceramics and cements and spent nuclear fuel. It focuses on durability aspects and contains data on performance of nuclear wasteforms as well as expected behavior in a disposal environment.

Modeling, Design and Optimization of Multiphase Systems in Minerals Processing

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ISBN: 9783039284009 9783039284016 Year: Pages: 232 DOI: 10.3390/books978-3-03928-401-6 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2020-04-07 23:07:09
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Mineral processing deals with complex particle systems with two-, three- and more phases. The modeling and understanding of these systems are a challenge for research groups and a need for the industrial sector. This Special Issue aims to present new advances, methodologies, applications, and case studies of computer-aided analysis applied to multiphase systems in mineral processing. This includes aspects such as modeling, design, operation, optimization, uncertainty analysis, among other topics. The special issue contains a review article and eleven articles that cover different methodologies of modeling, design, optimization, and analysis in problems of adsorption, leaching, flotation, and magnetic separation, among others. Consequently, the topics covered are of interest to readers from academia and industry.

Towards a Sustainable Management of Mine Wastes: Reprocessing, Reuse, Revalorization and Repository

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ISBN: 9783039281749 9783039281756 Year: Pages: 240 DOI: 10.3390/books978-3-03928-175-6 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering --- Mining and Metallurgy
Added to DOAB on : 2020-04-07 23:07:08
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The need for efficient and sustainable management methods of mine waste is continuously growing all around the world. These waste products often present serious management problems due to their more or less significant amounts and possible environmental threats. This Special Issue highlights the recent and new trends in sustainable mine waste management techniques. Currently, it is essential to sustainably manage mine waste, considering social, economic, environmental and technical aspects. In this Special Issue, insights related to the following issues are highlighted: the problems around mine waste, the fine characterization of mine waste, the latest available technical and environmental solutions to efficiently manage mine waste, including treatment and processing before disposal and high value element recovery, with the view of moving towards defining effective, low-cost and ecofriendly methods, the recycling of mine waste products as alternative resources in different sectors, and finally laboratory, pilot and/or industrial-scale studies related to these topics of research. Scientists and industry and governance stakeholders have to face these new challenges to find the best management practices for the future.

Keywords

copper tailings dump --- leaching --- pH --- mobility --- chemical species --- attenuation mechanisms --- aquatic systems --- Zgounder mine --- silver --- tailings --- low-grade silver ores --- flotation --- mineralogical characterization --- mine waste --- management --- sustainability --- bibliometric analysis --- systematic review --- valorisation --- mine waste --- soil washing --- heap leaching --- dump leaching --- mine drainage --- remediation --- acid mine drainage --- geographical information systems --- paste pH --- siderite --- multivariate analysis --- spatial mapping --- iron ore tailings --- iron recovery --- concrete composite admixtures --- reuse --- rheology --- microstructure --- flow behavior --- cemented paste backfill --- mixing --- recovering alkali --- Bayer red mud --- reaction kinetics --- magnesium oxide --- hydrotalcite-like compounds --- sustainable development --- tailings management --- industrial ecology --- sustainable resource management --- mining waste --- circular economy --- mine waste --- tailings --- gravity separation --- stamp mill --- historic tailings --- metals --- exploration --- economic potential --- LIBS --- core scanner --- acid mine drainage --- alkaline amendments --- cementitious amendments --- kinetic testing --- Joutel mine --- environmental mineralogy --- exploration --- contaminant --- geochemical behavior --- acid mine drainage --- mine tailings --- sulfides --- gold reprocessing --- desulfurization --- flotation --- kinetic test --- mining and mineral processing waste (MMPW) --- anthropogenic mineral resources (AMR) --- long-term storage --- supergene processes --- environmental damage --- loss and lost profits --- AMR processing --- n/a

Arctic Mineral Resources. Science and Technology

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ISBN: 9783038978244 9783038978251 Year: Pages: 432 DOI: 10.3390/books978-3-03897-825-1 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General)
Added to DOAB on : 2019-04-25 16:37:17
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The Arctic zone of the Earth is a major source of mineral and other natural resources for the future development of science and technology. It contains a large supply of strategic mineral deposits, including rare earths, copper, phosphorus, niobium, platinum-group elements, and other critical metals. The continued melting of the sea ice due to climate change makes these resources more accessible than ever before. However, the mineral exploration in the Arctic has always been a challenge due to the climatic restrictions, remote location, and vulnerability of Arctic ecosystems. This book covers a broad range of topics related to the problem of Arctic mineral resources, including geological, geochemical, and mineralogical aspects of their occurrence and formation; chemical technologies; and environmental and economic problems related to mineral exploration. The contributions can be tentatively classified into four major types: geodynamics and metallogeny, mineralogy and petrology, mineralogy and crystallography, and mining and chemical technologies associated with the exploration of mineral deposits and the use of raw materials for manufacturing new products. The book can be of interest for all those interested in Arctic issues and especially in Arctic mineral resources and associated problems of mineralogy, geology, geochemistry, and technology.

Keywords

forsterite --- typochemistry --- crystal structure --- Kovdor phoscorite–carbonatite complex --- pyrochlore supergroup minerals --- typochemistry --- crystal structure --- Kovdor phoscorite-carbonatite complex --- pyrrhotite --- chalcopyrite --- pentlandite --- cobaltpentlandite --- typochemistry --- crystal structure --- Kovdor phoscorite-carbonatite complex --- shkatulkalite --- titanosilicate --- crystal structure --- Kola Peninsula --- Lovozero alkaline massif --- transformation mineral species --- vuonnemite --- titanium --- niobium --- heap leaching --- bacterial leaching --- cryomineralogenesis --- low-grade copper-nickel ore --- raw materials --- apatite-nepheline-titanite ore --- sulfuric-acidic decomposition --- titanyl sulfate --- hydrothermal synthesis --- ivanyukite --- batievaite-(Y) --- hainite-(Y) --- titanosilicate --- rinkite group minerals --- Kola Peninsula --- Sakharjok massif --- Keivy alkaline province --- transformation mineral species --- vanadium mineralization --- mineralogy --- Paleoproterozoic --- Kola region --- Arctic zone --- Fennoscandian Shield --- zircon --- macrocrysts --- kimberlite --- trace elements --- geochronology --- cathodoluminescence --- Ti-in-zircon geothermometry --- antigorite --- ore dressing tailings --- mechanical activation --- alkali-activated binder --- Yenisei-Khatanga basin --- Siberian craton --- Arctic --- oil --- gas --- petroleum potential --- geodynamics --- apatite --- Khibiny --- apatite-nepheline deposit --- phase diagram apatite-nepheline-diopside --- silicocarbonatite --- melteigite --- calcite --- nepheline --- zeolite group minerals --- garnet --- crystal fractionation --- Breivikbotn --- Northern Norway --- saponite-containing waters --- diamond processing plants --- cryogenic treatment --- electrochemical separation --- saponite product applications --- U mineralization --- hydrothermal deposits --- U-Pb --- Rb-Sr --- Kola region --- evolution of the composition --- basic rocks --- Precambrian --- search of trend differences --- geodynamic evolution --- metallogeny --- beryllium minerals --- chemical composition --- mineral data --- alkaline rocks --- granite --- pegmatites --- hydrothermal veins --- Kola Peninsula --- Plume --- LIP --- PGE --- Palaeoproterozoic --- mafic intrusion --- U-Pb --- isotopes --- PGE --- South Reef --- West-Pana intrusion --- Fedorova-Pana Complex --- zircon dating --- U-Pb --- Khibiny promising structures --- conductive layers --- MHD-source “Khibiny”, Pechenga structure --- Kola Peninsula --- greenstone belt --- gold --- Kola Peninsula --- Northern Karelia --- rock alteration --- n/a

Mineral Surface Reactions at the Nanoscale

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ISBN: 9783038978961 9783038978978 Year: Pages: 220 DOI: 10.3390/books978-3-03897-897-8 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Geology --- Earth Sciences
Added to DOAB on : 2019-06-26 08:44:06
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Reactions at mineral surfaces are central to all geochemical processes. As minerals comprise the rocks of the Earth, the processes occurring at the mineral–aqueous fluid interface control the evolution of the rocks and hence the structure of the crust of the Earth during processes such as metamorphism, metasomatism, and weathering. In recent years focus has been concentrated on mineral surface reactions made possible through the development of advanced analytical methods such as atomic force microscopy (AFM), advanced electron microscopies (SEM and TEM), phase shift interferometry, confocal Raman spectroscopy, and advanced synchrotron-based applications, to enable mineral surfaces to be imaged and analyzed at the nanoscale. Experiments are increasingly complemented by molecular simulations to confirm or predict the results of these studies. This has enabled new and exciting possibilities to elucidate the mechanisms that govern mineral–fluid reactions. In this Special Issue, “Mineral Surface Reactions at the Nanoscale”, we present 12 contributions that highlight the role and importance of mineral surfaces in varying fields of research.

Trends in Catalytic Wet Peroxide Oxidation Processes

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ISBN: 9783039219247 9783039219254 Year: Pages: 196 DOI: 10.3390/books978-3-03921-925-4 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: General and Civil Engineering --- Technology (General)
Added to DOAB on : 2020-01-30 16:39:46
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This book gives an overview of the state of the art in Catalytic Wet Peroxide Oxidation research for the treatment of industrial and urban wastewaters and provides novel solutions to overcome the current challenges of this technology. These solutions include tailoring of the catalysts to exploit the use of additional energy sources and oxidants. The collected papers illustrate the high versatility of this low-cost technology, easily adaptable to any kind of wastewater, either polluted by high-loaded recalcitrant organics in industrial wastewaters or by emerging pollutants at microconcentration levels in urban waters.

Clean Energy and Fuel (Hydrogen) Storage

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ISBN: 9783039216307 9783039216314 Year: Pages: 278 DOI: 10.3390/books978-3-03921-631-4 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2019-12-09 11:49:15
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Clean energy and fuel storage are often required for both stationary and automotive applications. Some of these clean energy and fuel storage technologies currently under extensive research and development include hydrogen storage, direct electric storage, mechanical energy storage, solar–thermal energy storage, electrochemical (batteries and supercapacitors), and thermochemical storage. The gravimetric and volumetric storage capacity, energy storage density, power output, operating temperature and pressure, cycle life, recyclability, and cost of clean energy or fuel storage are some of the factors that govern efficient energy and fuel storage technologies for potential deployment in energy harvesting (solar and wind farms) stations and onboard vehicular transportation. This Special Issue thus serves the need for promoting exploratory research and development on clean energy and fuel storage technologies while addressing their challenges to practical and sustainable infrastructures.

Keywords

dye-sensitized solar cells --- carbon materials --- Ag nanoparticles --- freestanding TiO2 nanotube arrays --- gas turbine engine --- lean direct injection --- four-point --- low emissions combustion --- carbonate gas reservoirs --- water invasion --- recovery factor --- aquifer size --- production rate --- hydrogen storage --- complex hydrides --- nanocatalyst --- LiNH2 --- MgH2 --- ball milling --- Li-ion batteries --- nanocomposite materials --- cathode --- anode --- binder --- separator --- ionic liquid --- vertically oriented graphene --- electrical double layers --- charge density --- capacitance --- gas storage --- material science --- rock permeability --- synthetic rock salt testing --- Klinkenberg method --- hydrogen storage systems --- hydrogen absorption --- thermochemical energy storage --- metal hydride --- magnetism --- heat transfer enhancement --- Power to Liquid --- Fischer–Tropsch --- dynamic modeling --- lab-scale --- lithium-ion batteries --- simplified electrochemical model --- state of charge estimator --- extended kalman filter --- hot summer and cold winter area --- PCM roof --- comprehensive incremental benefit --- conjugate phase change heat transfer --- lattice Boltzmann method --- large-scale wind farm --- auxiliary services compensation --- battery energy storage system --- optimal capacity --- equivalent loss of cycle life --- hydrogen storage --- porous media --- bacterial sulfate reduction --- methanogenesis --- gas loss --- diffusion --- reactive transport modeling --- PHREEQC --- energy discharge --- bubbles burst --- bubbles transportation --- crystal growth rates --- undercooling --- salt cavern --- leaching tubing --- flutter instability --- flow-induced vibration --- internal and reverse external axial flows --- thermal energy storage (TES) --- slag --- regenerator --- concentrated solar power (CSP) --- quality function deployment (QFD) --- failure mode and effect analysis (FMEA) --- thermal energy storage --- electrochemical energy storage --- hydrogen energy storage --- salt cavern energy storage

Polymeric Foams

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ISBN: 9783039216321 9783039216338 Year: Pages: 322 DOI: 10.3390/books978-3-03921-633-8 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- Chemical Engineering
Added to DOAB on : 2019-12-09 11:49:16
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Advances in nanotechnology have boosted the development of more efficient materials, with emerging sectors (electronics, energy, aerospace, etc.) demanding novel materials to fulfill the complex technical requirements of their products. This is the case of polymeric foams, which may display good structural properties alongside functional characteristics through a complex composition and (micro)structure in which a gas phase is combined with rigid ones, mainly based on nanoparticles, dispersed throughout the polymer matrix. In recent years, there has been an important impulse in the development of nanocomposite foams, extending the concept of nanocomposites to the field of cellular materials. This, alongside developments in new advanced foaming technologies which have allowed the generation of foams with micro, sub-micro, and even nanocellular structures, has extended the applications of more traditional foams in terms of weight reduction, damping, and thermal and/or acoustic insulation to novel possibilities, such as electromagnetic interference (EMI) shielding. This Special Issue, which consists of a total of 22 articles, including one review article written by research groups of experts in the field, considers recent research on novel polymer-based foams in all their aspects: design, composition, processing and fabrication, microstructure, characterization and analysis, applications and service behavior, recycling and reuse, etc.

Keywords

grey relational analysis --- multi-objective particle swarm optimization --- acoustic performances --- Ethylene Propylene Diene Monomer --- polyurethane foam composites --- DOPO --- itaconic acid --- ethyl cellulose --- phenolic foams --- composites --- adjacent façade --- PUR --- energy conservation --- heat transfer --- burning characteristic --- semi-rigid polyurethane foams --- aluminum microfibers --- quasi-static compression tests --- mechanical properties --- energy absorption capability --- foams --- polyamide --- crystalline --- thermal conductivity --- mechanical property --- functional --- biomaterials --- composites --- EMI --- cellulose foam --- polypropylene --- foaming quality --- impact property --- intrinsic toughness --- flame-retardant ABS microcellular foams --- phosphorus flame retardants --- MuCell® injection-molding foaming --- graphene oxide --- rigid polyurethane foam --- thermogravimetric analysis --- activation energies --- extrusion foaming --- super critical CO2 --- lignin --- sound absorption coefficient --- mechanical property --- Pluronic --- surfactants --- foams --- SANS --- multilayers --- epoxy composite foam adhesive --- core–shell rubber --- impact wedge–peel test --- automobile structural adhesives --- flame retardancy --- foams --- phosphorus --- ternary synergistic effect --- polypropylene --- fluoelastomer --- scCO2 foaming --- heterogeneous nucleation --- polypropylene --- cellulose nanofiber --- foam injection molding --- mechanical properties --- polystyrene foams --- 1,3,5-benzene-trisamides --- cell nucleation --- foam extrusion --- foam morphology --- supramolecular additives --- thermal insulation --- compression properties --- piezoelectric --- functional foam --- piezocomposite --- PZT --- expandable microspheres --- permittivity --- polyetherimide foams --- graphene --- multifunctional foams --- ultrasonication --- scCO2 --- electrical conductivity --- polymer waste --- polyurethane foam --- leaching test --- microstructure --- absorbent PMI foam --- metallic tube --- electromagnetic wave absorption --- mechanical properties --- failure mechanism --- polymers --- foams --- shock compression --- equation of state --- epoxy --- foams --- expandable microspheres --- graphene --- nanotubes --- conductivity --- syntactic foams --- n/a

Assessment and Governance of Sustainable Soil Management

Authors: --- --- ---
ISBN: 9783039214792 9783039214808 Year: Pages: 310 DOI: 10.3390/books978-3-03921-480-8 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology --- Agriculture (General)
Added to DOAB on : 2020-01-30 16:39:46
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The role of soils for achieving the Sustainable Development Goals is multifarious. Soils are the essential basis for food and biomass provision in support of food security (SDG 2) and energy security (SDG 7). Soil carbon sequestration is paramount for climate action (SDG 13). Soil-mediated water purification and retention, nutrient and matter cycling, and soils habitat functions are essential for maintaining ecosystem services and biodiversity (SDG 15). Healthy soils perform well in all these functions simultaneously. However, the globally increasing demand for food, fiber, and bio-based products poses massive challenges to soil health. Minimizing trade-offs between biomass production and soil health requires systemic approaches to assessment and governance of sustainable soil management in agriculture and food systems. It provides interdisciplinary insights into key questions: What are the impacts of agricultural management practices on sustainability targets in specific geophysical and socio-economic contexts? What are the opportunities and risks of future trends such as climate change, digitalization, and emerging technologies for soil management and soil health? How can institutions and governance instruments be improved to enable decision makers to take action on sustainable soil management? The book was initiated in the frame of the National German research program ‘BonaRes—Soil as a sustainable resource for the bioeconomy’, and it is meant to trigger interdisciplinary thinking.

Keywords

conservation agriculture --- crop–livestock interactions --- Syria --- soil health --- agricultural innovation --- arid oasis --- combination of modern and indigenous knowledge --- Driver-Pressure-State-Impact-Response sustainability framework --- bayesian network --- soil functions --- conservation agriculture --- conventional farming --- zero tillage --- environmental zones --- phosphorus --- legal comparison --- governance --- sustainable agriculture --- fertilization --- soil protection --- Germany --- Costa Rica --- Nicaragua --- crop rotation modelling --- spatially explicit --- dynamic programming --- gross income --- carob --- yield --- soils --- desertification --- coffee by-products --- nutrient composition --- N leaching --- production --- so-called organic fertilizer --- ecosystem services --- governance --- institutions --- land --- property rights --- soils --- sustainability --- landowner --- tenant --- rent price --- rent proportion --- yield potential --- sustainable soil management --- soil degradation --- soil functions --- soil framework directive --- soil policy --- soil threats --- contamination --- sealing --- soil compaction --- risk assessment --- soil functions --- soil management --- subsoil --- compaction --- agricultural yields --- soil functions --- societal acceptance --- farmer motivations --- subsoil loosening --- alfalfa --- sustainable soil management --- resource scarcity --- Germany --- ecosystem services --- soil food web --- earthworms --- monitoring --- water infiltration --- agricultural policy --- behavioural studies --- literature review --- soil functions --- soil pressures --- justifying soil protection --- sustainable soil management --- creation ethics --- Laudato si’ --- property rights --- German Constitutional Law --- soil --- ecosystem services --- land management --- soil remediation --- Europe --- soil functions --- agricultural practices --- sustainability assessment --- ecosystem services --- resource use efficiency --- soil policy --- soil governance

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MDPI - Multidisciplinary Digital Publishing Institute (13)


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CC by-nc-nd (13)


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english (13)


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2020 (5)

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