Full-Scale Demonstration of Enzyme-Treated Coal Combustion for Improved Energy Efficiency and Reduced Air Pollution

The application of a new biochemical combustion technology, using a nanoenzyme (3EC) product, was studied in a 450 MW power plant. The enzyme changes the structure of the coal during the treatment process. The boiler performance and amount of air pollution were measured and analyzed. There was a clear decrease in the slagging observed on the heat-exchanger tubes. This is attributed to the formation of a softer, more porous iron-containing aluminosilicate slag structure. As a result, the slag does not cling to the heat-exchange tubes as tightly. Burning the enzyme-treated coal resulted in a decrease in NO_<i>x</i> emissions by 16.72–21.43% during the entire test period and a decrease in SO₂ emissions by 5.42–7.31% during the 85% load condition compared to emissions from the raw coal tests. In addition, sub-micrometer particles and mercury distribution were also influenced by the enzyme

Pieter Boddaert to Carl Linnaeus

Pieter Boddaert to Carl Linnaeu

Synthesis and Characterization of Two- and Three-Dimensional Calcium Coordination Polymers Built with Benzene-1,3,5-tricarboxylate and/or Pyrazine-2-carboxylate

Two new calcium coordination polymers, [Ca₃(btc)₂(H₂O)₁₂] (<b>1</b>) and [Ca₂(btc)­(pzc)­(H₂O)₃] (<b>2</b>) (btc = benzene-1,3,5-tricarboxylate, pzc = pyrazine-2-carboxylate), have been synthesized using the hydro/solvothermal method and have been characterized using X-ray diffraction, IR, UV–vis, thermogravimetric analysis, and fluorescence analysis. The structure of compound <b>1</b> is a three-dimensional framework consisting of helical chains of calcium coordination polymers, while that of compound <b>2</b> is a double layered network in which the inorganic zigzag chains of calcium coordination polyhedra are linked by organic ligands. Both compounds show blue fluorescence when excited with UV light. Density functional theory calculations on electronic absorption spectra of organic ligands and calcium coordination polymers are discussed