Toxicity of Aqueous Fullerene nC_<b>60</b>to Activated Sludge: Nitrification Inhibition and Microtox Test

• Yang, Yongkui

• Nakada, Norihide

• Nakajima, Ryoji

• Wang, Chao

• Tanaka, Hiroaki

書誌事項

タイトル別名

• Toxicity of Aqueous Fullerene nC(60) to Activated Sludge: Nitrification Inhibition and Microtox Test

抄録

The increasing production and use of fullerene nanomaterials raised their exposure potential to the activated sludge during biological wastewater treatment process. In this study, the toxicity of aqueous nanoscaled C60 (nC60) to activated sludge was investigated using nitrification inhibition and Microtox test. The test solutions of nC60 were prepared using two methods: long stirring (Stir/nC60) and toluene exchange (Tol/nC60). The nC60 aggregation in test medium was also evaluated for toxicity assessment. The results showed that the nC60 aggregation behaved differently in two test mediums during the incubation periods. The nC60 toxicity was greatly influenced by the preparation method. Stir/nC60 presented no significant toxicity to both the nitrification sludge and bioluminescent bacteria at the maximum concentration studied. In contrast, the EC20 of Tol/nC60 was obtained to be 4.89 mg/L (3 h) for the nitrification inhibition and 3.44 mg/L (30 min) for Microtox test, respectively.

収録刊行物

• Journal of Nanomaterials

  Journal of Nanomaterials 2012 1-6, 2012

  Hindawi Publishing Corporation

キーワード

• General Materials Science

詳細情報

• CRID: 1050282810779260672
• NII論文ID: 120005540428
• ISSN: 16874110
• ISSN: 16874129
• DOI: 10.1155/2012/512956
• HANDLE: 2433/193709
• Web Site: http://downloads.hindawi.com/journals/jnm/2012/512956.pdf
• Web Site: http://downloads.hindawi.com/journals/jnm/2012/512956.xml
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN