Nigeria is rich is solid mineral resources, such as: Kaolin, gypsum, mica, clay, tantalite, iron ore, gemstone, silica sand.
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Recycling concrete &building rubble is not only able to bring profit to investors, but also good for environment protection.
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By absorbing the advanced technology from the world, we researched and designed PF series impact crusher.…
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Base on the plentiful experience of producing and marketing of impact crusher, Sofol R&D institution…
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Adopting technology from the world, PY Series spring cone crusher has an excellent performance in secondary…
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The vibrating screen is a kind of sieving equipment of international advanced level, developed by our…
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Sofol VSI Series vertical shaft impact crusher is designed by reputed German expert of Sofol and every…
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An additional issue of concern is the production of waste heat during combustion. Burning waste produces steam which can be used for driving turbines and producing electricity, but the remaining heat has little to no industrial use. ... 10.2–16.3% magnetic fraction, 6.1–11.0% Fe scrap, and 1.3–2.8% non-Fe metals in the dry matter …
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The waste heat temperature in the current study is 432 °C, while the temperature in [42] is 780 °C. Therefore, the waste heat temperature has a significant impact on LCOH reduction. The system with waste heat utilization has the lowest LCOH compared to the other mentioned systems because of the low capital cost and high …
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A novel nanotechnology for the separation of radioactive waste that uses magnetic nanoparticles (MNPs) conjugated with actinide specific chelators (MNP-Che) is reviewed with a focus on design and ...
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LiCoO 2 and LiMn 2 O 4 were reduced by carbon heat and then ground in 1:1 mixture respectively). 2.3. Wet magnetic separation. A magnetic stirrer (HJ-3) was used to separate the products from the roasted mixture. 0.3 g of mixed calcined powder, the stirrer and ultrapure water were taken to investigate the effect of different solid-liquid ratios ...
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Magnetic nanoparticle–incorporated metal organic frameworks (MOF) are potential composites for various applications such as catalysis, water treatment, drug delivery, gas storage, chemical sensing, and heavy metal ion removal. MOFs exhibits high porosity and flexibility enabling guest species like heavy metal ions to diffuse into bulk …
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Biochar is a pyrogenous, organic material synthesized through pyrolysis of different biomass (plant or animal waste). The potential biochar applications include: (1) pollution remediation due to high CEC and specific surface area; (2) soil fertility improvement on the way of effect, enrichment in volatile matter and increase of …
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The hydration heat release of cement is a complicated physical and chemical process, and all four phases of conventional cement belong to the metastable state and react with water at certain conditions (Heikal et al., 2005; Liu et al., 2019b; Gallucci et al., 2010).At present, research on cementing cement preventing NGH decomposition …
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Heat-cool-heat DSC cycle curves of tetracycline in temperatures that preceded the decomposition are presented in Fig. 3.In the first heating, a broad endothermic event with peak at 124.8 °C was observed and attributed to the release of small amount of water adsorbed on the sample, once the event is not seen in the …
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1. Introduction. With the rapid development of the economy and population, vast amounts of food waste have been generated. For example, food waste is the most abundant organic component of municipal solid waste by weight and constitutes about 14–40% of the total waste in different countries (Levis et al., 2010).Globally, more than …
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This study analyzes the fast composting process (fast biodegradation) in detail. The. hypothesis of this research is that the process of composting food waste can take place within a. 1-2 week ...
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The co-combustion of several types of waste as part of water-containing waste-derived fuels is a promising method for their recovery. In this research, we use thermogravimetric analysis and differential scanning calorimetry to study the thermal behavior and kinetics of coal slime, biomass, waste oils, and blends on their basis.
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@article{Chen2020ReaxFFRM, title={ReaxFF Reactive Molecular Dynamics Simulations of Mechano-Chemical Decomposition of Perfluoropolyether Lubricants in Heat-Assisted Magnetic Recording}, author={Xingyu Chen and Kento Kawai and Hedong Zhang and Kenji Fukuzawa and Nobuaki Koga and Shintaro Itoh and Naoki Azuma}, …
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An iron-based catalyst with excellent performance and low price was used for simultaneous removal of SO2 and NOx in a typical Fenton system. The catalyst was developed from fly ash of pulverized …
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The schematic diagram (Fig. 1) of the thermochemical waste-heat recuperation system is simple and consists of two main elements – reactor where the reaction of ammonia decomposition occurs; preheater where initial ammonia is slightly heated before reactor.The schematic diagram can be expanded if ammonia is used in …
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Upon heat treatment at 300 °C, (CH 3 COO) 2 Ca on the surface decomposed, producing CaCO 3 and C 3 H 6 O. This decomposition resulted in the transformation of the composite powder into a Fe–6.5 wt%Si/CaCO 3 core–shell heterostructure, where Fe–6.5 wt%Si soft magnetic powder matrix served as the core …
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Thermal Waste Treatment. Thermal waste treatment refers to heat processes to treat waste materials. Thermal methods for waste management aim to reduce waste volume, convert waste into harmless materials, and utilize the energy hidden within waste as heat, steam, electrical power, or combustible material.
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Vacuum thermal decomposition was employed to treat recycled lead carbonate from waste lead acid battery. Thermodynamics analysis and experiments were finished from the reaction free energy of lead ...
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This paper reviews recent developments in the preparation, surface functionalization, and applications of Fe 3 O 4 magnetic nanoparticles. Especially, it includes preparation methods (such as electrodeposition, polyol methods, etc.), organic materials (such as polymers, small molecules, surfactants, biomolecules, etc.) or …
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Anaerobic digestion is a process through which bacteria break down organic matter—such as animal manure, wastewater biosolids, and food wastes—in the absence of oxygen. Anaerobic digestion for biogas production takes place in a sealed vessel called a reactor, which is designed and constructed in various shapes and sizes specific to the …
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The structural, morphological and magnetic properties of MFe2O4 (M = Co, Ni, Zn, Cu, Mn) type ferrites produced by thermal decomposition at 700 and 1000 °C were studied. The thermal analysis revealed that the ferrites are formed at up to 350 °C. After heat treatment at 1000 °C, single-phase ferrite nanoparticles were attained, while after …
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Thermochemical decomposition was developed to process spent ion exchange resins, mixed, polymer and chlorine-containing (e.g. PVC) wastes and biological objects, which are difficult to incinerate in conventional incinerators. These are incinerated using PMFs whose composition is designed (taking account of the waste's chemical composition) both to …
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The disposal of waste from electrical and electronic equipment is an actual problem of industrialized countries. In the present work, thermal decomposition of different materials has been studied in a thermobalance at different heating rates. Kinetic models are proposed for the pyrolysis, gasification and combustion of crushed wood pellets (CWP), …
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The influence of particle size (0.3 and 5.0 mm) and heating rate (5, 10, and 20 °C min –1) on the kinetic parameters of pyrolysis of waste tire was studied by thermogravimetric analysis and mathematical modeling.Kinetic parameters were determined using the Friedman model, the Coats–Redfern model, and the ASTM E1641 standard …
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The utilization of waste heat is an important way of combining energy saving to emission reductions. Here, authors demonstrate a magnetocaloric material as a controlling switch in a thermomagnetic ...
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Microbes utilise the available materials for their metabolism that in turn reduces the accumulation of wastes in the soil. Composting is the manageable bio decomposition or transformation of organic compounds, mainly in aerobic conditions where it is transformed into stable and soil like end product called compost.
DetailsIncineration is currently the most common heat-treatment method for plastic waste. Waste incineration is often used to generate power. Each day, approximately 750,000 tons of solid waste can be reduced by incineration worldwide, and the generated heat can be used (Makarichi et al., 2018). The energy recovery efficiency of this method …
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Here we illustrate a simple and rapid one-step process for the catalytic deconstruction of plastic waste. This involves the microwave-initiated, solid–solid catalytic reaction, whereby a mixture ...
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The activation energy, pre-exponential factor and order of the reaction for the thermal decomposition of 24% waste oxide loaded glasses were estimated using Kissinger method. View
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Aerobic composting. Aerobic composting is the most effective method of decomposition, resulting in mature compost in a short period (USEPA 2021).It is the biological breakdown and stabilization of organic materials under the circumstances conducive to thermophilic microbe multiplication and activity, resulting in a stable, …
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Thermal decomposition of waste plastic or gasification of waste plastic for ammonia production is found to be the ... Incineration may be another option where burning of waste plastics can produce heat energy where plastics possess calorific value ranging from 30 to 40 MJ/kg. ... Fraunholcz N. Upgrading mixed polyolefin waste with magnetic ...
DetailsAbstract During the zinc production process from sulfidic ores, the jarosite residue is produced within the precipitate containing ammonia, iron, zinc and other metal sulfates. The process yield jarosite which has been dumped as a waste despite its acidity presents environmental hazard while high content of iron, zinc, lead, cadmium and other …
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The first point to note about the decomposition of landfills is that the characteristics of a landfill are primarily governed by the presence or otherwise of aerobic or anaerobic conditions. Clearly, on …
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