Manna S, Singh N, Purakayastha TJ, Berns AE (2017) Effect of deashing
on physico-chemical properties of wheat and rice straw biochars and potential sorption of pyrazosulfuron-ethyl.
Thus, desulfurization and deashing
of coal prior to combustion are important to prevent fog haze weather.
The different carbohydrate fractions were identified and quantified by high-performance liquid chromatography (HPLC) (Waters 2695, Waters, Milford, USA), using a lead (II)-based column (HPX-87P, BioRad) with two MicroGuard Deashing
(Bio-Rad) precolumns operated at 85[degrees]C with 0.6 mL/min ultrapure water as eluent.
system pump was chocked often, due to sintered particles (lumps) formed due to water ingress.
The objective of our work was to evaluate the effect of aqueous caustic leaching on desulfurization and deashing
of asphaltite rich in organic sulfur and to study the effects of varying several experimental parameters on the efficiency of sulfur and ash removal.
Preston CM, Schnitzer M, Ripmeester JA (1989) A spectroscopic and chemical investigation on the deashing
of a humin.