Comparative data is presented on glucose and xylose release for enzymatic hydrolysis of solids produced by pretreatment of poplar wood by ammonia fiber expansion (AFEX), ammonia recycled percolation (ARP), controlled pH, dilute acid, flowthrough (FT), lime, and sulfur dioxide (SO(2)) technologies. Sugar solubilization was measured for times of up to 72 h using cellulase supplemented with beta-g...

Biofiltration of waste gases is cost-effective and environment-friendly compared to the conventional techniques for treating large flow rates of gas streams with low concentrations of pollutants. Pulp and paper industry off-gases usually contain reduced sulfur compounds, such as hydrogen sulfide and a wide range of volatile organic compounds (VOCs), e.g., methanol. It is desirable to eliminate ...

Hexavalent Chromium (Cr(VI)) in water is a public health concern and has been challenging research subject environmental field for many years. Herein, novel composite material consisting of amorphous iron sulfides supported on hydrotalcites (FeS/HTs) was synthesized by “calcination-reconstruction-calcination” process, which enables homogeneous distribution sulfur the surface (HT). The (mass rat...

Nitrate contamination in ground and surface water has become an increasingly serious problem in the world. As an alternative biological denitrification process, sulfur-limestone autotrophic denitrification processes (SLAD) can be used for nitrate removal in water or wastewater that contains a limited amount of organic carbon sources. This paper summarizes applications of SLAD processes for nitr...

Tests of the Saarberg-Halter Umwelttechnik GmbH (S-H-U) flue gas desulfurization (FGD) process were performed November 12-20, 1998. while burning the design coal at the NYSEG Milliken Station Unit No. 1. The objectives of the test program using the design coal were to demonstrate the effect of cocurrent and countercurrent liquid-to-gas ratio on SO, removal and scrubber operability. Measurements...

Based on ab initio DFT simulation results, the main processes of interaction thermal N atoms with MoS2 monolayers are revealed, potential mechanisms defect formation by low-energy ions N2+ described, and ion threshold energy required to sulfur removal is estimated.

Coal liquefaction involves cleavage of methylene and dimethylene and ethertype bridges connecting polycyclic aromatic units. The selected compounds for model coal liquefaction reactions are 4-( 1-naphthylmethy1)bibenzyl (NMBB) and several oxygen-containing compounds. This report mainly describes the synthesis and screening of selected iron and molybdenum compounds as precursors of dispersed cat...