Results 21 to 30 of about 753,354 (337)
Energies, 2020 The organic fraction of waste is increasingly used for biogas production. However, the fermentation process used for this purpose also produces waste in the form of digestate in addition to biogas. Its liquid fraction can, among other things, be a source
Agnieszka Urbanowska +3 more
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Purification of the Acidic Vanadium-Bearing Solution with a Novel Approach of Chemical Precipitation
Metals, 2021 Calcified roasting followed by dilute sulfuric acid leaching is a promising process for cleaner vanadium extraction from converter vanadium slag. However, some impurities, like Ca, Mg, Mn, Si and Al, also transfer into the leaching solution, accompanying
Juhua Zhang, Wei Zhang, Chengzhi Li
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Spiral precipitation patterns in confined chemical gardens [PDF]
Proceedings of the National Academy of Sciences, 2014 Significance Chemical gardens are plant-like mineral forms existing in nature at various scales. Even though they have been described for more than three centuries thanks to their beauty and analogies with biological forms, their growth mechanisms remain largely not understood.
Florence Haudin +3 more
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Chemical Precipitation removal of Boron in Synthetic Wastewater using Microwave Heating [PDF]
대한환경공학회지Objectives The objective of this study is to investigate the potential for the removal of boron(B) from synthetic wastewater through chemical precipitation using microwave heating to identify the optimal conditions for the removal of boron.
Minseo Sun, Jun Chun, Johng-Hwa Ahn
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Methods for removing heavy metals from water and wastewater: A review study [PDF]
Pizhūhish dar Bihdāsht-i Muḥīṭ., 2020 Background and purpose: Heavy metals are one of the stable pollutants that do not decompose in nature and can import into the environment by sewage or wastewater of various industries. Usually, small quantities of these metals are required for the normal
کیوان شایسته, Gity Behboody
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Influence of interstitials content on the diffusion of Niobium in alloy 718 [PDF]
, 2009 Many studies have emphasized the beneficial effect of niobium on the physical metallurgy of Ni-Cr-Fe alloy 718. Among the different strengthening actions of niobium, such as solid solution hardening and carbide precipitation, the precipitation of niobium
Andrieu, Eric +4 more
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Revista Facultad de Ingeniería Universidad de Antioquia, 2014 Leachates produced in the closed landfill Curva de Rodas in Medellin, Colombia are catalogued as mature leachates. These are characterized as poorly biodegradable waste containing organic compounds such as fulvic and humic acids, heavy metals, ammonia ...
Sebastian Canizales +3 more
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Processes, microstructure and properties of vanadium microalloyed steels [PDF]
, 2009 Vanadium as an important alloying element in steels was initially associated with the properties achieved following tempering. Interest in the microstructure was stimulated by the advent of transmission electron microscopes with a resolution of ~1nm ...
Baker, T.N.
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Mössbauer study of nanodimensional nickel ferrite-mechanochemical synthesis and catalytic properties [PDF]
, 2005 Iron-nickel spinel oxide NiFe2O4 nanoparticles have been prepared by the combination of chemical precipitation and subsequent mechanical milling. For comparison, their analogue obtained by thermal synthesis is also studied.
B. Kunev +17 more
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Chemical Precipitation method for Sulphate Removal from Treated Wastewater of Al-Doura Refinery [PDF]
Engineering and Technology Journal, 2021 Wastewater treatment by Wastewater Treatment Plant, named (INGECO) in Doura refinery suffers from the elevated level of sulphate ion concentrations compared to the recommended EPA [14] specified (250 mg/L).
Aumar Alnakeeb, Rana Mohammed Rasheed
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