A method for enhancing production of caproic acid and degradation of microplastics by anaerobic fermentation with calcium peroxide
By adding calcium peroxide to the anaerobic fermentation system, the problem of simultaneously achieving hexanoic acid production and microplastic degradation in existing technologies has been solved, resulting in highly efficient hexanoic acid production and microplastic degradation.
CN122357641APending Publication Date: 2026-07-10UNIV OF JINAN
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- UNIV OF JINAN
- Filing Date
- 2026-05-15
- Publication Date
- 2026-07-10
AI Technical Summary
Technical Problem
There is currently no effective technology that can simultaneously achieve efficient hexanoic acid production and microplastic degradation in an anaerobic fermentation system.
Method used
Different concentrations of calcium peroxide (CaO2) were added to the anaerobic fermentation system to alleviate the pH and generate hydroxyl radicals (·OH) in the system, thereby promoting the production of hexanoic acid and degrading polylactic acid (PLA) microplastics.
Benefits of technology
It increased hexanoic acid production by 49.9% and PLA microplastic degradation efficiency by 78.08%, solving the problem of harmless treatment of microplastic pollution and realizing efficient hexanoic acid production and simultaneous degradation of microplastics through anaerobic fermentation.
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Figure CN122357641A_ABST
Abstract
This invention relates to the fields of anaerobic fermentation and environmental protection technology, specifically to a method for enhancing the production of hexanoic acid and the degradation of microplastics through calcium peroxide-enhanced anaerobic fermentation. This method introduces 0.1-1.5 g / L calcium peroxide and polylactic acid (PLA) microplastics to be degraded into the anaerobic fermentation broth containing hexanoic acid-producing bacteria, simultaneously achieving two core regulatory effects: first, the calcium hydroxide generated from the decomposition of calcium peroxide effectively regulates the pH of the system, alleviating excessive acidification caused by the accumulation of volatile fatty acids; second, the hydroxyl radicals (·OH) generated from its decomposition enhance the hydrolysis efficiency of the organic substrate and PLA microplastics. Experimental results show that this invention not only significantly increases the yield of hexanoic acid but also greatly improves the degradation rate of microplastics. This invention provides an effective and green synergistic technical solution for the development of bio-based energy and the control of microplastic pollution.
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