During continuous casting, argon blowing from tundish cover (ABTC) can greatly prevent the flow of remaining air and decrease reoxidation molten steel in tundish. In current study, a numerical model based on two-strand slab casting machine was established to investigate feasibility evaluate protective effect ABTC process. The influence operation parameters, including sealing schemes holes rate ...

In this study, in order to understand the nanostructure of FeCrNi steels laser powder bed fusion (LPBF) process, directional solidification was simulated using large-scale molecular dynamics simulation (LSMDS). For purpose an atomic box with a dimension 70×40×60(nm3) including random dispersion Fe, Cr and Ni created. Then, two different fixed temperatures were considered for left right side dur...

Low-energy Auger and conversion electrons deposit their energy in a very small volume (a few nm3) around the site of emission. From a radiotoxicological point of view the effects of low-energy electrons on normal tissues are largely unknown, understudied, and generally assumed to be negligible. In this context, the discovery that the low-energy electron emitter, 99mTc, can induce stunning on pr...

The objectives of this study were to examine how recycle cup waste efficiently and effectively determine if can be converted into liquid, solid, gas value-added products by slow pyrolysis. characteristics potential utilizations the pyrolysis investigated. included effects temperature, heating rate, different feedstocks. yield oil derived from increased 42% at 400°C 47% 600°C, while char decreas...

Low-medium temperature application of selective catalytic reduction (SCR) denitration in cement flue gas was established and investigated this study. The 2000 h continuous operation shows the concentration NOx at outlet can be maintained 24 mg/Nm3 on average, while due to increase SO2 gas, increased 57.5 after long time operation. sulfur deposition is main reason for catalyst deactivation, stil...

The second-generation bio aviation fuel production via Chemical Looping Gasification (CLG) of biomass combined with downstream Fischer-Tropsch (FT) synthesis is a possible way to decarbonize sector. CLG process has the advantage producing undiluted syngas without use an air-separation unit (ASU) and improved yield compared conventional gasification processes. This study based on modelling full ...

Nitriding of nanocrystalline iron and reduction nitride with gaseous mixtures hydrogen ammonia were studied at 375 °C atmospheric pressure using the chemical potential programmed reaction (CPPR) method coupled in situ XRD. In this paper, a series phase transitions occurring during processes is shown, detailed analysis composition structure material given. The influence variable nitriding on lat...

The recovery of livestock manure, rich in nutrients, as fertilizer agriculture, could pose the risk an excessive load nitrogen on soil. Ammonia stripping is one available technologies for reducing amount digestate obtained by anaerobic digestion manure. study investigated performance and energy consumption a full-scale ammonia-stripping plant, equipped with bubble reactor working without use an...

This study estimates agricultural residue biomass available for biogas generation in smallholder farming systems the rural Vakinankaratra region of Madagascar, during 2017–2018. Estimations were done using a combination household surveys, literature models, and publicly data. Manure from four types farm animals 17 ten crops assessed. In studied period, gross produced animal manure crop 19.4 ± 7...

Os efluentes líquidos das fábricas de chocolates demandam tratamento, dado o seu potencial poluidor. Uma alternativa é empregar tratamento anaeróbio, que remove parcialmente a matéria orgânica e produz biogás. A produção biogás pode ser estimada por meio equações matemáticas simples, partir dessas estimativas avaliado uso energético desse insumo. O objetivo deste trabalho foi estimar produzido ...