Method for preparing ammonium sulfamate bacterial celluloses for absorbing Pb2+ in waste water

A technology of bacterial cellulose and ammonium sulfamate, applied in the direction of adsorption of water/sewage treatment, chemical instruments and methods, water pollutants, etc., can solve the problems of unsatisfactory adsorption effect and achieve good linear correlation and adsorption process fast effect

Inactive Publication Date: 2015-04-22
STATE GRID CORP OF CHINA +1
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  • Summary
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  • Claims
  • Application Information

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Problems solved by technology

However, compared with the above-mentioned adsorbents, bacterial cellulose has an unsatisfactory adsorption effect. In order to summarize the adsorption performance of bacterial cellulose, it is necessary to modify it.

Method used

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  • Method for preparing ammonium sulfamate bacterial celluloses for absorbing Pb2+ in waste water
  • Method for preparing ammonium sulfamate bacterial celluloses for absorbing Pb2+ in waste water

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Embodiment Construction

[0032] The implementation of the present invention will be described in further detail below. The following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0033] A kind of adsorption of Pb in wastewater 2+ The preparation method of ammonium sulfamate bacterial cellulose, the method comprises steps as follows:

[0034] (1) preparation of bacterial cellulose;

[0035] ①Cultivation of bacterial cellulose,

[0036] First-level seed shaking culture: Take the activated slant seeds and insert them into the seed medium, shake them at 28°C for 24 hours, and shake them fully when inoculating to release the bacteria;

[0037] Among them, the oscillator speed is 120r / min;

[0038] Secondary seed expansion cultivation: take the seed culture medium after the first shaking culture and insert the same volume of new seed culture medium with 10% inoculation amount, and shake it at 28°C for 20 hours;

[0039] Static fermentat...

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Abstract

The invention relates to a method for preparing ammonium sulfamate bacterial celluloses for absorbing Pb2+ in waste water. The method includes the steps of (1) preparing bacterial celluloses, wherein the process includes the steps of (a) cultivation of the bacterial celluloses, (b) isolation and purification of the bacterial celluloses and (c) preparation of bacterial cellulose powder; (2) preparing epoxidation bacterial celluloses, wherein the process includes the steps of (a) preparation of alkalization bacterial celluloses and (b) obtaining of epoxy group bacterial celluloses; (3) preparing the ammonium sulfamate bacterial celluloses. By means of the method, the ammonium sulfamate bacterial celluloses serve as absorption materials of the Pb2+, the absorption process is rapid, adsorption equilibrium is achieved at the 90 min in the absorption process, the good linear dependence is achieved, and the theory saturation adsorption amount of the ammonium sulfamate bacterial celluloses is 31.23 mg / g.

Description

technical field [0001] The invention belongs to the technical field of wastewater heavy metal ion treatment, in particular to a method for adsorbing Pb in wastewater 2+ The preparation method of ammonium sulfamate bacterial cellulose. Background technique [0002] With the rapid development of the economy and the massive discharge of waste water, the problem of heavy metal pollution has attracted more and more attention. Wastewater containing heavy metal ions mainly comes from mechanical processing, mining, smelting of steel and non-ferrous metals, and some chemical companies. Heavy metals are a class of pollutants that are extremely harmful to the ecological environment, mainly including mercury, cadmium, chromium, lead, zinc, copper, cobalt, manganese, titanium, molybdenum, etc. They cannot be biodegraded after entering the environment, but can only change their form Or be transferred, diluted, participate in the food chain cycle and eventually accumulate in the organism...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/62
CPCB01J20/24B01J2220/44B01J2220/4868C02F1/286C02F2101/20
Inventor 赵鹏郭军科卢立秋邵林于金山郝春艳苏展刘鸿芳
Owner STATE GRID CORP OF CHINA
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