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Adsorptive removal of geosmin by ceramic membrane filtration with super-powdered activated carbon
| Title: | Adsorptive removal of geosmin by ceramic membrane filtration with super-powdered activated carbon |
| Authors: | Matsui, Yoshihiko Browse this author →KAKEN DB | | Aizawa, Takako Browse this author | | Kanda, Fumiaki Browse this author | | Nigorikawa, Naoko Browse this author | | Mima, Satoru Browse this author | | Kawase, Yuji Browse this author |
| Keywords: | adsorption | | algae | | MF | | odour | | PAC | | taste |
| Issue Date: | Sep-2007 |
| Publisher: | IWA Publishing |
| Journal Title: | Journal of Water Supply : Research and Technology, AQUA |
| Volume: | 56 |
| Issue: | 6–7 |
| Start Page: | 411 |
| End Page: | 418 |
| Publisher DOI: | 10.2166/aqua.2007.017 |
| Abstract: | Tap water free from unpleasant taste and odour is important for consumer satisfaction. We applied a super-powdered activated carbon (S-PAC) and microfiltration (MF) system to the removal of geosmin, a taste- and odour-causing compound. We used a specially pulverised PAC with a submicron particle size, much smaller than the normal PAC (N-PAC) particle size, as an adsorption pretreatment agent. MF and adsorption pretreatment with S-PAC removed geosmin with considerably greater efficiency and at a much lower dosage rate than with N-PAC. An S-PAC dosage of 2 mg/L was equivalent to an N-PAC dosage of more than 20 mg/L in the treatment of reagent-geosmin–spiked feed water – a dosage saving of 90%, with better removal. In experiments with feed water spiked with cultured Anabaena and geosmin, geosmin removal was attained with S-PAC at a dosage 10% of that of N-PAC. The superiority of S-PAC in removing naturally occurring geosmin from raw water was also confirmed. However, the dosage saving in this case was 75%. S-PAC also helped attenuate trans-membrane pressure increases in both physical backwash and chemical cleaning cycles. No significant trans-membrane pressure increase was observed during 4 months of MF operation with S-PAC addition, suggesting that S-PAC particles did not clog or foul the membrane. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/30269 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 松井 佳彦
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