Skip to main content

FATE OF METHANOL IN AN ANAEROBIC TREATMENT SYSTEM IN A PAPER MILL

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

A paper mill has recently proposed the treatment of methanol-containing condensate in an existing anaerobic pretreatment system as an alternative control of hazardous air pollutants (HAPs) 40 CFR Part 63 Subpart S – Maximum Achievable Control Technology. There was a concern on the anaerobic biodegradability of methanol and byproducts and the potential for gas stripping from the system. A series of laboratory-scale experiments was conducted and a mathematical model was developed to evaluate the fate of methanol during anaerobic treatment. More than 99% of methanol contained in the condensate was biodegraded during anaerobic digestion. From an anaerobic digester batch test, the second order biodegradation rate constant, kb2, was estimated to range from 3.97 × 10-3 m3/g·day (when only condensate was fed) to 4.06 × 10-2 m3/g·day (when condensate was fed at the proposed rate). The losses of methanol through the Styrofoam™ cover system and volatilization were estimated to be almost zero (< 0.01%). Byproducts from methanol degradation such as acetaldehyde and methyl ethyl ketone were degraded completely in 32 hours. Since the anaerobic treatment process has the detention time of 5 days, condensate byproducts are believed to be completely biodegraded. Since acetaldehyde and methyl ethyl ketone have one order of magnitude smaller Henry's law constants than methanol, the release of these byproducts to the atmosphere is expected to be much smaller than methanol, which was found to have almost zero loss through volatilization. The introduction of condensate into the existing anaerobic pretreatment process appears to improve the treatment efficiency, leading to more stable anaerobic treatment as well as reduced sludge generation in the aerobic wastewater treatment process due to reduced organic loading.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Document Type: Research Article

Publication date: 2001-01-01

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more