Effect of activation procedures on ammonia adsorption of bagasse fly ash from sugar industry waste

In this study, the effect of activation procedures on the ammonia adsorption of BFA was investigated. BFA was activated by chemical and physical methods, and the adsorption capacity and surface properties of BFA were analyzed. The results showed that both chemical and physical activation methods increased the BET surface area and porosity of BFA, which in turn enhanced its ammonia adsorption capacity. Specifically, chemically activated BFA performed the best, with a capacity of 5.34 mg/g. This study provides insights into the optimization of BFA as an adsorbent for ammonia and contributes to the development of sustainable and low-cost adsorption technologies

Recent advances in hydrothermal carbonisation:from tailored carbon materials and biochemicals to applications and bioenergy

Introduced in the literature in 1913 by Bergius, who at the time was studying biomass coalification, hydrothermal carbonisation, as many other technologies based on renewables, was forgotten during the "industrial revolution". It was rediscovered back in 2005, on the one hand, to follow the trend set by Bergius of biomass to coal conversion for decentralised energy generation, and on the other hand as a novel green method to prepare advanced carbon materials and chemicals from biomass in water, at mild temperature, for energy storage and conversion and environmental protection. In this review, we will present an overview on the latest trends in hydrothermal carbonisation including biomass to bioenergy conversion, upgrading of hydrothermal carbons to fuels over heterogeneous catalysts, advanced carbon materials and their applications in batteries, electrocatalysis and heterogeneous catalysis and finally an analysis of the chemicals in the liquid phase as well as a new family of fluorescent nanomaterials formed at the interface between the liquid and solid phases, known as hydrothermal carbon nanodots

Effect of activation procedures on ammonia adsorption of bagasse fly ash from sugar industry waste

In this study, the effect of activation procedures on the ammonia adsorption of BFA was investigated. BFA was activated by chemical and physical methods, and the adsorption capacity and surface properties of BFA were analyzed. The results showed that both chemical and physical activation methods increased the BET surface area and porosity of BFA, which in turn enhanced its ammonia adsorption capacity. Specifically, chemically activated BFA performed the best, with a capacity of 5.34 mg/g. This study provides insights into the optimization of BFA as an adsorbent for ammonia and contributes to the development of sustainable and low-cost adsorption technologies

Design and simulation of a novel top-lit downdraft gasifier cookstove and performance comparison with a conventional top-lit updraft cookstove

This study designed and fabricated a novel top-lit downdraft gasifier stove (TLDDGS), which was compared with a traditional top-lit updraft gasifier stove (TLUDGS) in terms of modeling and performance. The experimental and simulation results demonstrated that the novel TLDDGS exhibits a downward-flow configuration. The average fuel consumption measured in the experiments was 4.57 ± 0.933 g/min. The average flame temperature from the experiment was 608 ± 43 °C. The TLDDGS mean flame temperature remained stable throughout the experiment. The O2, H2, CO2, CO, CH4, and N2 in the diluted syngas from the experiment were 16.07, 0.33, 0.66, 2.56, 0.34, and 80.04% by volume, respectively. The total suspended particulates and CO in TLDDGS and TLUDGS were 15 and 28 mg/m3 and 335 and 69 ppm, respectively, which are within the limits specified by the local standard. Thus, the developed TLDDGS is a promising alternative for sophisticated cooking applications because of its superior performance in terms of flame stability