Sentence examples for ash surface from inspiring English sources

Noticeable changes in fly ash surface morphology as a function of temperature has been noticed using ESEM.

In a coal-fired boiler, these gaseous oxides are absorbed on the fly ash surface in the convective section by a chemical reaction.

The BET active surface area of this sample was 1.52 m2/g and the chemical composition of the fly ash surface (AES, XPS) was significantly different from the bulk composition and varied considerably between spheres.

The parameters that characterize the O2 mass transfer rate from the particulated phase to the ash surface (Sh′εmf) and from the ash surface to the unreacted core (Deff) are determined and it is shown how Deff changes with the carbon content of the particles.

Results from sorbent activation studies, SEM images, and N2 adsorption measurement of total surface area indicate that the effects of a natural gas flame on ash sorbent reactivity and ash surface area are minimal.

The 2015 regulations governed new and exiting coal ash landfills and surface impoundments, and required existing unlined coal ash surface impoundments that were contaminating groundwater above local groundwater standards to either retrofit or close.

A detailed chemical kinetic model consisting of a homogeneous mechanism with 279 elementary reactions and a new nineteen-step heterogeneous mechanism for reactions on fly ash surfaces was developed to predict mercury oxidation under various quench rates and gas compositions characteristic of coal-fired flue gas.

As the pH increased greater than 3.7, it can be expected that fly ash surfaces become more negative charged (Eqs. 2 and 3), which allow metals (M+) to be complexed at the surface (Eqs. 4 and 5), leading to enhanced cationic metal ions adsorption (Chaiyasith et al. 2006; Wang et al. 2006).

Moreover, the amount of water uptake on ash surfaces due to hygroscopic soluble salts or aerosols does not increase except for the case of high RH conditions, which has been tested only on fine ash (<125 μm) (Lathem et al. 2011).

While neither apparent nor plastic viscosities were particularly well described by the commonly employed Kreiger Dougherty equation, plastic viscosities were found to be linear functions of either total (cement + fly ash) particle surface area or total particle density.

The homogeneous route needs more fundamental research, and as regards the de novo route, more attention needs to be paid to the composition and nature of the ash's surface, including particle size and carbon/catalyst disposition.