Continuous biodiesel production using in situ glycerol separation by membrane bioreactor system.
Summary of "Continuous biodiesel production using in situ glycerol separation by membrane bioreactor system."
Biodiesel is one of the most promising renewable fuel sources. Candida antarctica lipase B (CalB) has been used for biodiesel production because of its high activity and stability. However, CalB can only be utilized in industrial biodiesel production if the enzyme deactivation by methanol and the negative effects of glycerol can be mitigated. Methanol inhibition can be avoided by utilizing a stepwise addition of methanol, but there is no suitable method to reduce the glycerol effect. This study aims to use a membrane bioreactor system to remove glycerol during biodiesel production. In addition, methanol inhibition can be reduced by continuously feeding methanol through the membrane system. This continuous membrane bioreactor system can be used for efficient biodiesel production.
Affiliation
Graduate Program of Bioengineering, Seoul National University, Seoul, 151-744, Korea.
Journal Details
This article was published in the following journal.
Name: Bioprocess and biosystems engineering
ISSN: 1615-7605
Pages:
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/21918839
- DOI: http://dx.doi.org/10.1007/s00449-011-0604-1
Medical and Biotech [MESH] Definitions
Glycerol Kinase
An enzyme that catalyzes the formation of glycerol 3-phosphate from ATP and glycerol. Dihydroxyacetone and L-glyceraldehyde can also act as acceptors; UTP and, in the case of the yeast enzyme, ITP and GTP can act as donors. It provides a way for glycerol derived from fats or glycerides to enter the glycolytic pathway. EC 2.7.1.30.
Cell Nucleus
Within a eukaryotic cell, a membrane-limited body which contains chromosomes and one or more nucleoli (CELL NUCLEOLUS). The nuclear membrane consists of a double unit-type membrane which is perforated by a number of pores; the outermost membrane is continuous with the ENDOPLASMIC RETICULUM. A cell may contain more than one nucleus. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed)
Primed In Situ Labeling
A technique that labels specific sequences in whole chromosomes by in situ DNA chain elongation or PCR (polymerase chain reaction).
Social Isolation
The separation of individuals or groups resulting in the lack of or minimizing of social contact and/or communication. This separation may be accomplished by physical separation, by social barriers and by psychological mechanisms. In the latter, there may be interaction but no real communication.
Spectral Karyotyping
The simultaneous identification of all chromosomes from a cell by fluorescence in situ hybridization (IN SITU HYBRIDIZATION, FLUORESCENCE) with chromosome-specific florescent probes that are discerned by their different emission spectra.
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