Gaseous Formaldehyde Degrading by Methylobacterium sp. XJLW

Area of Science:

• Environmental microbiology
• Bioremediation
• Chemical engineering

Background:

• Formaldehyde is a harmful industrial chemical frequently found in sewage.
• Microbial formaldehyde degradation is a promising method for environmental cleanup.
• Methylobacterium sp. XJLW demonstrates significant liquid formaldehyde degradation capabilities.

Purpose of the Study:

• To assess the survival rate of Methylobacterium sp. XJLW under various temperature and drought conditions.
• To evaluate the efficacy of Methylobacterium sp. XJLW in degrading gaseous formaldehyde using a super absorbent polymer (SAP) carrier.

Main Methods:

• Survival rates of XJLW were tested at temperatures including 4°C, 15°C, 30°C, 35°C, and 40°C.
• Gaseous formaldehyde degradation was assessed in an analog device using SAP as a carrier for XJLW.

Main Results:

• XJLW exhibited the highest survival rate (83.97%) at 30°C after 4 days.
• Survival rates decreased significantly at temperatures above and below 30°C, with better tolerance to cold than heat.
• The bacterium effectively degraded gaseous formaldehyde over an extended period in the analog device.

Conclusions:

• Methylobacterium sp. XJLW is a robust bacterium with optimal performance at 30°C.
• The use of SAP as a carrier enables long-term degradation of gaseous formaldehyde by XJLW.
• This study highlights the potential of XJLW for practical applications in formaldehyde removal.