Southern yellow pine wood chips were used as the feedstock for a pilot-scale gasification unit coupled with a 25 kW generator. The pulp-grade wood chips were relatively free of bark and low in ash content. Processing this feedstock yielded a black/sooty byproduct that upon combustion in a muffle furnace resulted in an ash content of about 48%. The term ―char ash‖ was coined to account for the t...

Variation in growth and habitat use is closely connected to individual responses to habitat specific resource levels and predation risk. In three mountain lakes which differed in the density of young-of-the-year (YOY) arctic char (Sal elinus alpinus), we studied the growth, diets and habitat use of YOY char in relation to resource levels. With two model approaches, we further examined the exten...

Zirconium phosphate (ZrP) recently introduced in intumescent fire protective coating has shown improvement developing ceramic layer. The tubular halloysite clay (THC) due to its unique molecular structure can be combined with ZrP enhance resistance by a strong silica network on the char surface. This study is aimed investigate synergistic effects of and zirconium fillers improve thermal perform...

Abstruct -An implementation, called MOD-CHAR, of Char’s spanning tree enumeration algorithm [3] is discussed. Two complexity analyses of MOD-CHAR are presented. It is shown that MOD-CHAR leads to better complexity results for Char’s algorithm than what could be obtained using the straightforward implementation implied in Char’s original presentation 131. The class of graphs for which MOD-CHAR a...

The characteristics of particulate matter (PM) emitted from residual fuel oil combustion in two types of combustion equipment were compared. A small commercial 732 kW rated fire-tube boiler yielded a weakly bimodal particulate size distribution (PSD) with over 99% of the mass contained in a broad coarse mode and only a small fraction of the mass in an accumulation mode consistent with ash vapor...

Municipal compost sample was pyrolyzed to produce compost char as a sorbent for removing the herbicide atrazine from solution. The compost-based char was compared with an activated carbon derived from corn stillage. When compost was pyrolyzed, the char yield was greater than 45% when heated under air, and 52% when heated under N2. In contrast, when the corn stillage was pyrolyzed under N2, the ...

This review critically examines char conversion kinetics in oxidizing or reducing atmosphere. In kinetic analysis the devolatilization of biomass and the conversion of char are usually investigated by means of separate experiments, although some kinetic models are also available of biomass combustion. The large majority of the char conversion kinetics consists of a global reaction with activati...

The structural evolution of rice husk char particles during steam gasification was studied by ultimate analysis, inductively coupled plasma atomic emission spectroscopy, scanning electronic microscope, N(2) physisorption method and X-ray diffraction. Drastic changes in char structure occurred even when the char conversion was minimal. The C, H and O content decreased by more than 85%, 67% and 9...