Rare Earth Additive for Microbial Biotransformation of Low-Rank Coal

The patent introduces rare earth elements (specifically rare earth salts or compounds) as intermediaries to mediate between low-rank coal and microbial communities. These rare earth substances act as catalysts or promoters that enhance microbial metabolic activity, thereby improving the efficiency of converting low-rank coal into useful products while reducing harmful emissions. The rare earth elements facilitate biochemical reactions that would otherwise be inefficient or polluting.

The patent changes the chemical and biological parameters of the coal transformation process by adding rare earth elements. This shifts the transformation pathway from direct combustion (high temperature, oxygen-intensive) to enhanced microbial biotransformation (lower temperature, enzyme-catalyzed). The rare earth elements modify reaction kinetics, microbial community structure, and product distribution, thereby improving material utilization and reducing pollution.

The patent optimizes the concentration and composition parameters of rare earth additives to achieve maximum catalytic effect at minimum cost. By determining optimal dosage ranges and selecting cost-effective rare earth compounds (such as using more abundant rare earth elements), the patent balances performance enhancement with economic feasibility.

The patent employs composite rare earth formulations, combining multiple rare earth elements or mixing rare earth compounds with other materials to enhance catalytic activity while reducing the amount of expensive rare earth substances needed. This composite approach allows for synergistic effects that improve production efficiency while controlling costs.