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Preparation of bacteria mineralized nanometer needle iron ore and its application

A nano-goethite, goethite technology, applied in other chemical processes, process efficiency improvement, chemical instruments and methods, etc.

Inactive Publication Date: 2005-01-05
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Bacterial mineralized nano-goethite is used as a solid adsorption material for heavy metal sewage treatment, but there are no related reports at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0009] Embodiment: The preparation of bacterial mineralized nano-goethite is realized by the following steps: two kinds of close symbiotic natural iron bacteria Gallionella ferruginea and natural iron bacteria Leptothrix ochracea are mineralized The resulting biomineralization and distilled water are mixed into a 1:6 aqueous solution, and the suspended solids and organic impurities are removed by stirring, sedimentation, separation, and repeated washing for 4-6 times. After the sample passes through a 160-mesh sieve, take the fine part, then use deionized water to make a suspension at a solid-to-liquid ratio of 1:10, shake and balance for 24-48 hours, then filter and dry at low temperature (30-80°C) Made of bacterial mineralized nano goethite.

[0010] The obtained bacterial mineralized nano-goethite is analyzed by scanning electron microscope. Goethite with microscopic spiral and tubular structure should account for more than 85%. The main chemical composition (mass percentag...

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Abstract

A process for preparing the bacteria mineralized gothite nanoparticles used for treating the heavy metal sewage includes such steps as proportionally mixing distilled water with the substance mineralized by symbiotic two Fe bacteria to obtain aqueous solution, stirring, depositing, separating, washing 4-6 times, baking the deposit, sieving, suspending in deionized water, oscillating for 24-48 hr, filtering and low-temp drying.

Description

technical field [0001] The invention relates to the preparation and application of bacteria mineralized nano goethite. Background technique [0002] At present, chemical precipitation and solid adsorption materials are mainly used for heavy metal pollution and its wastewater treatment. Bacterial mineralized nano-goethite is used as a solid adsorption material for heavy metal sewage treatment, but there are no related reports at home and abroad. Contents of the invention [0003] The purpose of the present invention is to provide a preparation and application of bacterial mineralized nano-goethite with strong adsorption capacity and large adsorption capacity. [0004] In order to achieve the above object, the technical solution of the present invention is: the preparation of bacterial mineralized nano-goethite is realized by the following steps: two kinds of close symbiotic natural iron bacteria Gallionella ferruginea and natural iron bacteria fiber The biomineralization ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/06B01J20/30C02F1/28C22B3/18
CPCY02P10/20
Inventor 孙振亚方玲祝春水龚文琪
Owner WUHAN UNIV OF TECH
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