Comparative Study of Sorbents for Spray Dry Scrubbing of SO from Flue Gases.

This study presents the findings of an investigation involving the absorption of SO from flue gases, using three different sorbents, in a spray dryer. Experimentation involved the evaluation of three sorbents, i.e.

Dataset on the carbon dioxide, methane and nitrogen high-pressure sorption properties of South African bituminous coals.

The dataset presented in this article supplements the result and information published in the report "The carbon dioxide, methane and nitrogen high-pressure sorption properties of South African bituminous coals" (Okolo t al., 2019). Four run of mine coal samples from selected underground coal mines from the Highveld, Witbank, and Tshipise-Pafuri coalfields of South Africa were used for the study.

The carbon dioxide gasification characteristics of biomass char samples and their effect on coal gasification reactivity during co-gasification.

The carbon dioxide gasification characteristics of three biomass char samples and bituminous coal char were investigated in a thermogravimetric analyser in the temperature range of 850-950 °C. Char SB exhibited higher reactivities (R, R, R) than chars SW and HW. Coal char gasification reactivities were observed to be lower than those of the three biomass chars.

Chemical and structural characterization of char development during lignocellulosic biomass pyrolysis.

The chemical and structural changes of three lignocellulosic biomass samples during pyrolysis were investigated using both conventional and advanced characterization techniques. The use of ATR-FTIR as a characterization tool is extended by the proposal of a method to determine aromaticity, the calculation of both CH/CH ratio and the degree of aromatic ring condensation ((R/C)). With increasing temperature, the H/C and O/C ratios, X and CH/CH ratio decreased, while (R/C) and aromaticity increased.

Structural and chemical modifications of typical South African biomasses during torrefaction.

Torrefaction experiments were carried out for three typical South African biomass samples (softwood chips, hardwood chips and sweet sorghum bagasse) to a weight loss of 30 wt.%. During torrefaction, moisture, non-structural carbohydrates and hemicelluloses were reduced, resulting in a structurally modified torrefaction product.

The adsorption of copper in a packed-bed of chitosan beads: modeling, multiple adsorption and regeneration.

In this study, exoskeletons of Cape rock lobsters were used as raw material in the preparation of chitin that was successively deacetylated to chitosan flakes. The chitosan flakes were modified into chitosan beads and the beads were cross-linked with glutaraldehyde in order to study copper adsorption and regeneration in a packed-bed column. Five consecutive adsorption and desorption cycles were carried out and a chitosan mass loss of 25% was observed, after the last cycle.