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Hydrated cerium carbonate phosphorus removal adsorbents as well as preparation method and application thereof

A phosphorus adsorbent and hydrated carbonic acid technology, applied in the field of environmental pollution treatment, can solve the problems of low adsorption capacity, difficult separation and recycling of phosphorus removal materials, etc., and achieve high phosphorus adsorption and removal performance, good magnetic separation performance and regeneration performance. , The effect of strong phosphate specific adsorption capacity

Active Publication Date: 2021-04-20
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention aims to solve the problem that the adsorption capacity of the current cerium-loaded / modified phosphorus removal material is relatively low, and the phosphorus removal material is difficult to separate, recycle and reuse after adsorption, and provides a hydrated cerium carbonate phosphorus removal adsorbent and its preparation method and application. This kind of adsorbent has simple preparation raw materials and process, low preparation cost, green and safe, and has excellent effect on the removal of phosphorus in water and can realize rapid magnetic separation recovery

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  • Hydrated cerium carbonate phosphorus removal adsorbents as well as preparation method and application thereof
  • Hydrated cerium carbonate phosphorus removal adsorbents as well as preparation method and application thereof
  • Hydrated cerium carbonate phosphorus removal adsorbents as well as preparation method and application thereof

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specific Embodiment approach 1

[0041] Specific implementation mode 1: What is described in this implementation mode is a hydrated cerium carbonate dephosphorization adsorbent, the active component of which is Ce 2 (CO 3 ) 2 ·xH 2 O or Ce 2 (CO 3 ) 2 ·xH 2 O and Fe 3 o 4 Composite materials, 0≤x≤8, where x is an integer or non-integer, depending on the drying temperature and time during sample preparation. The magnetic / nonmagnetic hydrated cerium carbonate adsorbent for phosphorus removal has a powdery solid appearance, among which, the magnetic hydrated cerium carbonate adsorbent for phosphorus removal appears as a brown powder, and the nonmagnetic hydrated cerium carbonate adsorbent for phosphorus removal appears as a white powder.

specific Embodiment approach 2

[0042] Specific embodiment two: a preparation method of the hydrated cerium carbonate dephosphorization adsorbent described in specific embodiment one,

[0043] Method 1: The active component is Ce 2 (CO 3 ) 2 ·xH 2 The preparation steps of the phosphorus removal adsorbent of O are as follows:

[0044] S1. Weigh a certain amount of metal cerium salt and surface active substances and disperse them in water, stir for 30 minutes to obtain liquid A, the molar concentration of Ce salt in liquid A is 0.005-0.5M, and the volume fraction of surface active substances is 0-10%;

[0045] S2. Weighing a certain amount of precipitant and dissolving it in water to obtain liquid B, the concentration of liquid B is 0.005-1.75M;

[0046] S3. Under stirring, add liquid B dropwise to liquid A at a rate of 0.25-30ml / min through a peristaltic pump to induce nucleation and crystallization. The reaction temperature between liquid A and liquid B is controlled at 0-80°C. After the dropwise additi...

specific Embodiment approach 9

[0062] Embodiment 9: An application of the hydrated cerium carbonate phosphorus removal adsorbent prepared in any one of Embodiments 2 to 8 to remove phosphorus in various water bodies.

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Abstract

The invention discloses hydrated cerium carbonate phosphorus removal adsorbents as well as a preparation method and application thereof, belonging to the technical field of environmental (water) pollution treatment. A magnetic hydrated cerium carbonate phosphorus removal adsorbent prepared in the invention is a dark brown powdery solid in appearance, and a non-magnetic hydrated cerium carbonate phosphorus removal adsorbent is a white powdery solid in appearance. From the view of a microstructure, the prepared non-magnetic hydrated cerium carbonate phosphorus removal adsorbent is of a smooth lamellar structure, and the magnetic hydrated cerium carbonate phosphorus removal adsorbent is of a nanoparticle-lamellar structure mixed structure. The magnetic and non-magnetic hydrated cerium carbonate phosphorus removal adsorbents prepared in the invention have a good treatment effect on domestic sewage and industrial wastewater with high-concentration phosphorus, secondary sedimentation tank effluent with low-concentration phosphorus, various surface water and the like. The preparation method of the magnetic / non-magnetic hydrated cerium carbonate phosphorus removal adsorbent is simple in process, no toxic or harmful solvent or surfactant is needed in the preparation process, and the magnetic / non-magnetic hydrated cerium carbonate phosphorus removal adsorbent is green, safe and short in preparation period and has good application potential.

Description

technical field [0001] The invention belongs to the technical field of environmental (water body) pollution treatment, and in particular relates to a hydrated cerium carbonate dephosphorization adsorbent and a preparation method and application thereof. Background technique [0002] As one of the environmental hotspots that has attracted worldwide attention, the occurrence of eutrophication in water bodies can lead to the rapid proliferation of a large number of algae and phytoplankton in water bodies, forming algal blooms or red tides. At the same time, due to the continuous consumption of dissolved oxygen in the water body, various vegetation and aquatic organisms such as fish die and rot due to lack of oxygen, resulting in the continuous deterioration of the water quality. On the one hand, the biodiversity of the water body will be destroyed, and may even cause an imbalance in the aquatic ecosystem; on the other hand, the death and decay of various vegetation and fish wil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/02B01J20/06B01J20/28B01J20/30C01F17/247C01F17/10C01G49/08B82Y40/00B82Y30/00C02F1/28C02F101/10
CPCY02C20/40
Inventor 王威单苏洁张涛崔福义
Owner HARBIN INST OF TECH
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