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GAC-MnO2 nano-particle composite material and preparation and application thereof

A composite material and nanoparticle technology, which is applied in the direction of waste fuel, hydrocarbon production from carbon oxides, chemical instruments and methods, etc., can solve the problems of easy washing out of reactors, uneven mixing of anaerobic sludge systems, etc., and achieve the goal of preparing Raw materials are easy to obtain, the cost of raw materials and preparation is low, and the effect of preparing raw materials is simple

Pending Publication Date: 2020-08-14
DONGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The present invention generates MnO on the surface of GAC with larger particle size 2 Nanoparticles can effectively solve the nano-MnO 2 In the anaerobic sludge system, the problem of uneven mixing and easy washing out of the reactor, and GAC as a good electron conductor can accelerate electron transfer; at the same time, the solid form of MnO on the surface of GAC 2 Nanoparticles can act as a "catalyst" in the process of anaerobic metabolism, and solid tetravalent manganese (MnO 2 ) is reduced to divalent manganese (Mn 2+ ), Mn 2+ As an electron donor for methanogens to reduce CO 2 Methane is produced, while Mn 2+ oxidized to MnO 2

Method used

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  • GAC-MnO2 nano-particle composite material and preparation and application thereof
  • GAC-MnO2 nano-particle composite material and preparation and application thereof
  • GAC-MnO2 nano-particle composite material and preparation and application thereof

Examples

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Effect test

Embodiment 1

[0041] Take 20g of GAC with a particle size range of 0.20-0.25mm in 1mol / L mixed acid (sulfuric acid: nitric acid = 3:1), wherein GAC comes from Sinopharm (CAS: 7440-44-0), and acidify at 70°C After treatment for 4 hours, the excess acid solution attached to the GAC was washed with deionized water, and then dried in an oven at 100°C for 24 hours to obtain acidified GAC.

[0042] Immerse 1.5g of acidified GAC in 100mL of 0.1mol / L sodium sulfate solution, stir with a magnetic stirrer, and adjust the temperature at 50°C, then slowly add 0.16mol / L potassium permanganate and 0.1mol / L The sodium sulfate mixed solution was reacted for 6 hours, and then the excess potassium permanganate solution attached to the GAC was washed with deionized water, and the cleaned sample was put into an oven for 24 hours at 80°C to obtain GAC-MnO 2 Nanoparticle composites.

[0043] The test experiment was carried out in a 300mL serum bottle with an effective reaction volume of 200mL. First, add a cer...

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Abstract

The invention relates to a GAC-MnO2 nano-particle composite material and preparation and application thereof. The composite material is prepared by loading manganese dioxide (MnO2) nano-particles on the surface of granular activated carbon (GAC). Anaerobic metabolism can be enhanced, the microbial activity and the degradation rate of organic matters are improved, so that the yield and the rate ofmethane of the system are improved, and the product is suitable for sludge anaerobic digestion and efficient anaerobic reactors.

Description

technical field [0001] The invention belongs to the field of water treatment materials and their preparation and application, in particular to a GAC-MnO 2 Nanoparticle composites and their preparation and applications. Background technique [0002] Anaerobic biological treatment technology is a green and low-cost treatment technology that has attracted much attention in wastewater treatment and energy recovery. Anaerobic metabolism includes hydrolysis and acidification stages (hydrolysis stage, acidification stage, hydrogen production and acetic acid production stage) and methanogenic stage. The process is completed by two types of microorganisms, fermentative bacteria and methanogenic bacteria, under the mechanism of cooperation. Under standard conditions, the reaction formula of the stage of hydrogen production and acetic acid production is as follows: [0003] CH 3 CH 2 OH+H 2 O—CH 3 COO - +2H 2 +H + +9.6 [0004] CH 3 CH 2 COO - +3H 2 O—CH 3 COO - +HCO ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34B01J35/10B01J35/02C07C1/02C07C9/04C02F11/04C02F3/28C02F3/34C02F101/30
CPCB01J23/34C02F11/04C02F3/28C02F3/34C07C1/02C02F2101/30B01J35/50B01J35/61C07C9/04Y02E50/30
Inventor 徐辉杨波贾丽娟
Owner DONGHUA UNIV
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