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[Filtration capability of the bio-dynamic membrane]
Bin Fan1, Xia Huang, Xianghua Wen
1Dept. of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China.
Huan Jing Ke Xue= Huanjing Kexue
|April 24, 2003
Summary
Dynamic bio-membranes on Dacron mesh effectively separate solids and liquids, primarily due to a gel layer. While this membrane removes significant TOC, it struggles to filter very large organic molecules.
Area of Science:
- Environmental Engineering
- Materials Science
Context:
- Bioreactors are crucial for wastewater treatment.
- Dynamic membranes offer potential for advanced filtration.
- Mesh materials provide a substrate for membrane formation.
Purpose:
- To investigate the filtration performance of dynamic bio-membranes formed on Dacron mesh.
- To analyze the role of the gel layer in solid-liquid separation.
- To evaluate the membrane's ability to remove total organic carbon (TOC).
Summary:
- Dynamic bio-membranes formed on 100-micron Dacron mesh exhibit excellent solid-liquid separation, attributed to a gel layer.
- The membranes effectively removed 30%-60% of TOC across various molecular weights.
- Filtration resistance was comparable to untapped material, with the gel layer reducing initial resistance and potentially mitigating mesh hydrophobicity.
Impact:
- Highlights the potential of dynamic bio-membranes for enhanced wastewater treatment.
- Identifies the gel layer as a key component for filtration efficiency.
- Provides insights into membrane fouling and resistance mechanisms.