Modified nano zero-valent iron-bio-based composite functional material as well as preparation method and application thereof

A technology of nano-zero-valent iron and compound functions, which is applied in the direction of chemical instruments and methods, water pollutants, alkali metal compounds, etc., can solve the problems that it is difficult to achieve the goal of pollution remediation, and can not solve the problem of remediation, so as to achieve efficient adsorption of heavy metals and low price Low cost, high cost reduction effect

Pending Publication Date: 2021-12-03
EAST CHINA UNIV OF SCI & TECH +1
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  • Description
  • Claims
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Problems solved by technology

[0018] At present, nano-zero-valent iron-bio-based materials are widely used in the removal of heavy metal pollution and some organic pollutants in the laboratory simulation environment and have achieved good results. However, the application of this material to real polluted wa

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  • Modified nano zero-valent iron-bio-based composite functional material as well as preparation method and application thereof
  • Modified nano zero-valent iron-bio-based composite functional material as well as preparation method and application thereof
  • Modified nano zero-valent iron-bio-based composite functional material as well as preparation method and application thereof

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Embodiment 1

[0062] This embodiment provides a modified nano-zero-valent iron-bio-based composite functional material, including sulfide nano-zero-valent iron and bio-based materials, and the bio-based material is used as an adsorption carrier to load the sulfide nano-zero-valent iron; wherein The bio-based materials include carbon microspheres and calcium alginate; the raw materials for the preparation of the sulfide nano zero-valent iron include: iron trichloride hexahydrate (FeCl 3 ·6H 2 O), the vulcanizing agent is sodium dithionite (Na 2 S 2 o 4 ). The composite material makes up for the defects that the nanometer zero-valent iron is easy to agglomerate, and the carbon microspheres are difficult to recycle.

[0063] The raw materials for the preparation of the carbon microspheres include industrial waste and leftover glucose. The preparation raw material of described calcium alginate comprises sodium alginate. For example, the sodium alginate is derived from seaweed by-product s...

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Abstract

The invention discloses a modified nano zero-valent iron-bio-based composite functional material as well as a preparation method and an application thereof. The modified nano zero-valent iron-bio-based composite functional material comprises vulcanized nano zero-valent iron and a bio-based material, and the bio-based material is used as an adsorption carrier to load the vulcanized nano zero-valent iron; wherein the bio-based material comprises carbon microspheres and calcium alginate; and the vulcanized nano zero-valent iron is prepared from the following raw materials: ferric chloride hexahydrate and a vulcanizing agent. In the preparation process of the modified nano zero-valent iron-bio-based ternary composite material, vulcanized nano zero-valent iron is synthesized by utilizing a one-step method and is loaded on the surfaces of the carbon microspheres and the calcium alginate carrier, and solid loading and calcium alginate loading are combined; the sulfurized nano zero-valent iron material has larger specific surface area, high-efficiency adsorption performance, reduction performance and recovery potential, and can achieve the purpose of efficiently fixing cadmium and chromium pollution at the same time.

Description

technical field [0001] This application relates to the technical field of heavy metal pollution repair materials in environmental protection, in particular to a modified nanometer zero-valent iron-bio-based composite functional material and its preparation method and its application in cadmium and chromium pollution repair. Background technique [0002] Cadmium is recognized as highly toxic to organisms and humans, and has biological activity in terrestrial and aquatic organisms. Due to its high toxicity and strong bioaccumulation, cadmium is listed as the first class of carcinogens. Compared with other heavy metals, cadmium is more soluble and mobile, leading to its uptake by plants, subsequent transport and accumulation in different edible plant parts, and finally enrichment in human body. Rice is an important food crop that supplies 3.5 billion people in the world, and most of the food chain contamination caused by cadmium may originate from this crop. Excessive cadmium ...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28B01J20/30B09C1/08B09C1/10C02F1/28C02F101/20C02F101/22
CPCB01J20/0229B01J20/20B01J20/223B01J20/28047B09C1/10B09C1/08C02F1/281C02F1/283C02F1/285B09C2101/00C02F2101/20C02F2101/22
Inventor 彭程张琪吴永红张卫沈屹豪梁玮瑜王戈慧万江
Owner EAST CHINA UNIV OF SCI & TECH
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