Investigation on the interaction mechanism during co-combustion of sewage sludge and coal slime: The effect of coal slime type and pretreatment method.

Co-combustion of sewage sludge (SS) and coal slime (CS) is the preferred method for mitigating their environmental impact and increasing their added value. However, the interaction mechanism between SS and CS during the co-combustion process has not yet developed a unified understanding. This work aims to obtain the effect of CS types on SS-CS co-combustion and reveal the interaction mechanism between SS and CS based on the influence of pretreatment methods on the interaction.

Investigation of interaction mechanisms during co-combustion of sewage sludge and coal slime: Combustion characteristics and NO/SO emission behavior.

Co-combustion of sewage sludge (SS) and coal slime (CS) is a promising method to achieve resource utilization of both solid wastes. However, the emission characteristics of NO/SO and the interaction mechanisms between SS and CS are unclear. In this paper, the co-combustion characteristics and NO/SO emission behavior of SS and CS were investigated using a thermogravimetric analyzer and a tube furnace combustion system, and the interactions between SS and CS were explored.

N migration and transformation during the co-combustion of sewage sludge and coal slime.

The co-combustion of sewage sludge and coal slime is considered a promising technique for reducing the volume of sewage sludge, adding value, and decreasing the risks associated with these wastes. This work aimed to study N migration and transformation mechanisms and the related interactions during the co-combustion of sewage sludge (SS) and coal slime (CS) by thermogravimetric-mass spectrometry combined with X-ray photoelectron spectroscopy. The results revealed that the main N-containing gases produced during the combustion of SS and CS were NH generated from Amino-N at 200-400 °C and HCN generated from heterocyclic nitrogen at 400-600 °C, respectively.

KCO-Impregnated Al/Si Aerogel Prepared by Ambient Pressure Drying for CO Capture: Synthesis, Characterization and Adsorption Characteristics.

A new potassium-based adsorbent for CO capture with Al aerogel used as support is proposed in this work. The adsorbents with different surface modifiers (tetraethyl orthosilicate (TEOS) and trimethyl chlorosilane (TMCS)) and different KCO loadings (10%, 20%, 30% and 40%) were prepared by sol-gel and iso-volume impregnation processes with ambient pressure drying. The CO adsorption performance of the adsorbents were tested by a fixed-bed reactor, and their adsorption mechanisms were studied by scanning electron microscopy (SEM), Brunauer Emmett Teller (BET), X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, and X-ray fluorescence spectrometry (XRF).

Study on CO Capture Characteristics and Kinetics of Modified Potassium-Based Adsorbents.

In this paper, a silica aerogel support was prepared by two-step sol-gel method, and the active component KCO was supported on the support by wet loading to obtain a modified potassium-based CO adsorbent. As the influences of reaction conditions on the CO capture characteristics of modified potassium-based adsorbents, the reaction temperature (50 °C, 60 °C, 70 °C, 80 °C), water vapor concentration (10%, 15%, 20%), CO concentration (5%, 10%, 12.5%, 15%), and total gas flow rate (400 mL/min, 500 mL/min, 600 mL/min) were studied in a self-designed fixed-bed reactor.