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Method for recovering nickel from nickel-containing wastewater by using microbial electrolytic cell

A microbial electrolysis cell and nickel wastewater technology, which is applied in the fields of process efficiency improvement, photographic technology, instruments, etc., can solve the problems of serious equipment corrosion and high energy consumption in the electrolysis process, achieve low energy recovery, reduce emissions, and avoid environmental pollution Effect

Active Publication Date: 2016-08-03
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] The disadvantage of the traditional method of electrolytic recovery of nickel is that the electrolysis process consumes a lot of energy, and the acid produced seriously corrodes the equipment.

Method used

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  • Method for recovering nickel from nickel-containing wastewater by using microbial electrolytic cell
  • Method for recovering nickel from nickel-containing wastewater by using microbial electrolytic cell
  • Method for recovering nickel from nickel-containing wastewater by using microbial electrolytic cell

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Embodiment Construction

[0056] The process flow of the invention includes: preparation of the microbial electrolytic cell, enrichment of electrochemically active microorganisms in the anode of the microbial electrolytic cell and recovery of elemental nickel. The present invention is further described in conjunction with following examples.

[0057] 1. Preparation of nickel recovery unit:

[0058] The structure of the nickel recovery unit is as follows: image 3 As shown, it includes: anode chamber 1, carbon fiber brush anode electrode 2, proton exchange membrane 3, cathode chamber 4, graphite plate cathode electrode 5, anode chamber inlet 6, cathode chamber inlet 7, wire 8, potentiostat 9. Wire 10, resistor 11, titanium wire 12 and data acquisition system 13.

[0059] The anode chamber 1 and the cathode chamber 4 are respectively made of polymethyl methacrylate (PMMA) to form a cavity of 4 cm × 8 cm × 11 cm. On the top of the anode chamber 1 and the cathode chamber 4 of the microbial electrolytic ...

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Abstract

The invention discloses a device and method for recovering nickel from nickel-containing wastewater by using a microbial electrolytic cell. The device includes a microbial electrolytic cell, a data acquisition system and a recording unit; the microbial electrolytic cell is a double-chamber microbial electrolytic cell; The inert material is the anode electrode, the conductive inert material is the cathode electrode, and the anode electrode and the cathode electrode are connected through a titanium wire, a potentiostat and a resistor; the data acquisition system is connected in parallel with the resistor, and the recording unit is connected to the data acquisition system. The invention provides a feasibility analysis and a specific operation method for electrolytic recovery of nickel from nickel-containing wastewater by using a microbial electrolytic cell, and realizes the recovery of nickel in the nickel-containing wastewater by using a microbial electrolytic cell. Compared with the traditional method of recovering nickel in water by electrolysis, this method greatly reduces energy consumption, reduces the use of chemical reagents, reduces costs, and avoids environmental pollution.

Description

technical field [0001] The invention relates to a device and a method for recovering nickel from nickel-containing wastewater by utilizing a microbial electrolytic cell. Background technique [0002] Nickel is an important non-ferrous metal material, which has the advantages of corrosion resistance, no oxidation in the air and strong alkali resistance. It has a wide range of uses, including special steel, alloys of electronic materials and aerospace materials, catalysts, electroplating, battery materials, etc. [0003] In the current industrial production process, a large amount of nickel-containing waste liquid is produced. If it is directly discharged into the environment, it will cause great pollution to the environment. At the same time, nickel is an expensive metal. Therefore, no matter from the perspective of ecology or resource reuse, the recovery of nickel in waste liquid has very important practical significance. [0004] At present, nickel recovery methods mainl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C1/08
CPCY02P10/20
Inventor 李侠蒋海明张金山
Owner INNER MONGOLIA UNIV OF SCI & TECH
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