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Title:
METHOD FOR REMOVING MANGANESE FROM WASTEWATER
Document Type and Number:
WIPO Patent Application WO/2018/096962
Kind Code:
A1
Abstract:
Provided is a method for oxidizing manganese contained in wastewater and removing the same with the use of a manganese oxidizing bacterium. The method for removing manganese from manganese-containing wastewater using a manganese oxidizing bacterium comprises adding an amino acid having a molecular weight of 90 or greater and glucose. It is preferred that the amino acid is added in such an amount as to give an amino acid molar concentration which is 1.6-2.2 times as high as the molar concentration of manganese in the wastewater and glucose is added in such an amount as to give a glucose molar concentration which is 0.2-0.6 time as high as the molar concentration of manganese in the wastewater. The manganese oxidizing bacterium is proliferated and, at the same time, a carbon source as a cell constituent and an energy source are supplied so that manganese can be sufficiently oxidized by the manganese oxidizing bacterium and thus removed through precipitation without adding an alkali in a large amount.

Inventors:
OKIBE NAOKO (JP)
TAKEDA KENJI (JP)
KAJI NOBUYUKI (JP)
TAKENOUCHI HIROSHI (JP)
ASANO SATOSHI (JP)
Application Number:
PCT/JP2017/040695
Publication Date:
May 31, 2018
Filing Date:
November 13, 2017
Export Citation:
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Assignee:
UNIV KYUSHU NAT UNIV CORP (JP)
SUMITOMO METAL MINING CO (JP)
International Classes:
C02F3/34; C02F3/00; C12N1/20; C22B3/18; C22B47/00
Domestic Patent References:
WO2011074586A12011-06-23
Foreign References:
JPS5418151A1979-02-09
US5441641A1995-08-15
JP2002543978A2002-12-24
JP2016168029A2016-09-23
JP2001224364A2001-08-21
JP2016049019A2016-04-11
JPH04235792A1992-08-24
JPS5952583A1984-03-27
Other References:
BOHU, T.: "Biological low-pH-Mn(II) oxidation in a manganese deposit influenced by metal-rich groundwater", APPLIED AND ENVIRONMENTAL MICROBIOLOGY, vol. 82, no. 10, May 2016 (2016-05-01), pages 3009 - 3021, XP055488432
Attorney, Agent or Firm:
YAMAUCHI PATENT ATTORNEYS (JP)
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