A manganese immobilization technology in a fluidized-bed reactor (FBR) was developed by using a waste iron oxide (i.e., BT-3) as catalyst which is a by-product from the fluidized-bed Fenton reaction (FBR-Fenton). It was found that BT-3 could easily reduce potassium permanganate (KMnO4) to MnO2. Furthermore, MnO2 could accumulate on the surface of BT-3 catalyst to form a new Fe-Mn oxide. Laborat...

A significant increase is seen worldwide in the amounts of wood ashes (WAs) produced by heating and power industry. This study investigates potential utilisation two different WAs as low-level cement replacements, an untreated a washed version. Phase development mechanical response were investigated. Results indicated ettringite formation mainly to contribute strength until excessive formation....

The combustion properties of various biomass and wood materials from various references and from our laboratory were reanalysed. The net heat of combustion for cellulosic materials was found to be 13.23 kJ/g times the ratio of stoichiometric oxygen mass to fuel mass, ro, regardless of the material composition. Bomb calorimeter data for original, charred and volatilized material components provi...

Treculia africana (African breadfruit) seeds extracted from fresh fruit heads were treated with graded concentrations (1% 5%) of trona (sodium sesquicarbonate) and wood ash for 5 – 25 min to evaluate their demucilaginating effectiveness. Seeds from naturally fermented and unfermented fruit heads served as controls. The effect of the demucilaginating aid on nutrient composition, colour and water...

Short-term effects of different doses (0.25 and 0.5 kg m) of wood ash fertilization in a field experiment in a 20-year-old Scots pine stand on a nutrient-poor sandy soil (Arenosol) was studied in North Estonia. Soil chemical properties, nutrient accumulation, soluble carbohydrates, starch, hemicellulose, cellulose, and lignin were used as biochemical indicators for the assessment of the state o...

Silicone (polydimethylsiloxanes, or PDMS) fluids are widely used in industrial and consumer products, and may find their way into municipal biosolids that are eventually applied to the land. In soil PDMS breaks down into dimethylsilanediol which is then either volatilized or biodegraded. Since biosolids are often composted prior to land application, this paper investigates fate and effects of P...

Conocarpus erectus L. is a fast growing tree, drought resistant and it is widely planted throughout Saudi Arabia around parking lots and along the streets. It constitutes a renewable resource that could be used as a source of raw materials required for several uses. However, no data were available about its wood quality. This study was established to investigate the effect of plant spacing on s...

abstract the effect of different levels of potassium permangenate (kmno4) on quality of mango fruits were studied over a period of 21 days. a factorial trial in the form of complete randomized design as three levels of kmno4 (0, 5 or 10 g. kg-1 fruit) and three time period (7, 14 or 21 days) was used. means were compared using duncan’s test (p< 0.05). compositional parameters (ph, acidity, tota...

In Northern Europe the use of tree biomass for production of energy is mostly based on thinning of forests, harvest residues, stumps from final cutting, bark of commercial roundwood, and organic waste of pulp industry. Results based on field experiments allow estimations of 137Cs activity removed from forests in wood fuel, and also the activity returned in ash used as a fertiliser. After one fe...