In the production process of formaldehyde-based resins, acidic wastewater rich with formaldehyde is produced (3000-10,000 ppm). Due to the carcinogenic nature of formaldehyde, such wastewaters need to be treated prior to release from the industrial plants. Bioremediation is a favorable solution, however, low pH and high formaldehyde concentrations render the use of bacteria and enzymes inefficient. Other solutions, such as advanced oxidation or reduction processes are far less specific and require high operational costs. Consequently, a sustainable and cheap solution is still needed.
The present technology consists of a one-step comprehensive solution by combining chemical adsorption and biological degradation of formaldehyde. The invention is directed to clay composites comprising at least one polycation attached to the clay surface and at least one aldehyde degrading microorganism and uses thereof for removal of aldehyde from aldehyde containing environments.
- Reduces toxicity
- Mediates pH
- Does not require high temperatures or pressure
Applications and Opportunities
- Efficient adsorption and biodegradation of formaldehyde from industrial wastewater