Strain GX-3 and method for recycling nano gold from gold-ion-bearing wastewater

A nano-gold, GX-3 technology, applied in the field of environmental microorganisms, can solve the problems of high concentration of gold ions in effluent, high cost, and poor recovery effect
CN106967636AActive Publication Date: 2017-07-21NINGBO URBAN ENVIRONMENT OBSERVATION & RES STATION NUEORS CHINESE ACADEMY OF SCI +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NINGBO URBAN ENVIRONMENT OBSERVATION & RES STATION NUEORS CHINESE ACADEMY OF SCI
Publication Date
2017-07-21

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Abstract

The invention relates to strain GX-3, in particular to strain GX-3 for efficiently recycling noble metal ions from wastewater, such as mine wastewater, electronic wastewater, and belongs to the technical field of environmental microorganisms. The strain GX-3 has a taxonomic name, Delftia tsuruhatensis GX-3 and is also a sulfur-reducing bacterium. The strain gauge GX-3 is collected in CGMCC (China General Microbiological Culture Collection Center) under CGMCC No. 13430 on December 07, 2016. Au3+ is added to sulfur-reducing strain GX-3 culture liquid, cell membrane pore protein of the strain GX-3 is reduced directly into Au3+ as elemental Au0; the elemental Au0 is combined with the pore protein to form nano gold particles, and precipitation in the solution is avoided. High-speed centrifugal method is used to separate and collect nano gold particles, and the concentration of residue Au3+ in the solution is detected via ICP-MS analysis.
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Description

technical field

[0001] The invention relates to a bacterial strain GX-3, in particular to a bacterial strain GX-3 suitable for efficient recovery and utilization of noble metal ions from mine wastewater, electronic waste water and other water, and belongs to the technical field of environmental microorganisms. Background technique

[0002] With the development of industry, especially the rapid development of high-tech industries in recent decades, the demand for gold has been increasing, and the world's gold resources have been developed and utilized in large quantities. For the gold mines mined in the past 10 or 20 years, there are fewer and fewer gold mines that are easy to select and leach, while more and more are difficult to select and leach. In order to seek ways to reduce the production cost of refractory gold ore and increase the recovery rate, microbial technology for refractory gold ore treatment received more and more attention in the mid-1980s.

[0003] A large ...

Claims

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