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Traditional Chinese medicine dreg charcoal adsorbent carrying vulcanization nano zero-valent iron and preparation method and application of adsorbent

A technology of sulfided nanometer and adsorbent, which is applied in chemical instruments and methods, adsorption of water/sewage treatment, water pollutants, etc. Sexuality and reactivity, inhibition of agglomeration, wide-ranging effects

Pending Publication Date: 2019-06-21
CHINA PHARM UNIV
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Problems solved by technology

[0009] On the one hand, the present invention aims at the existing vulcanized nano-zero-valent iron which is easy to agglomerate and thus limits its application in water environment restoration; Traditional Chinese medicine dregs biochar adsorbent and its preparation method and its application in wastewater treatment

Method used

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Experimental program
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Effect test

Embodiment 1

[0034] Such as figure 1 As shown, after washing, drying and crushing the traditional Chinese medicinal residues of Astragalus membranaceus, passing through a 100-mesh sieve, placing the medicinal residues powder in an atmosphere furnace, and performing pyrolysis and carbonization at 400 °C under anaerobic conditions to obtain biochar of Astragalus membranaceus residues; After 2 g of astragalus residue biochar was mixed with 500 mL of 75 mM iron salt solution for 2 h, 150 mL of 0.6 M NaBH was added dropwise under anaerobic conditions. 4 solution (4mL / min), followed by the dropwise addition of 250mL of 37.5 mM Na 2 S 2 o 4 solution (4mL / min); after the dropwise addition, wash with absolute ethanol 3 times, put it into a vacuum drying oven at 50°C for 8 hours in a vacuum, and obtain a Chinese medicine dregs biochar adsorbent loaded with sulfide nano-zero-valent iron.

[0035] Such as figure 2 As shown, the transmission electron microscope results show that the prepared adsor...

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Abstract

The invention discloses a traditional Chinese medicine dreg charcoal adsorbent carrying vulcanization nano zero-valent iron and a preparation method and application of the adsorbent in wastewater treatment. Traditional Chinese medicine dregs are adopted to prepare charcoal and are used as a carrier of vulcanization nano zero-valent iron, the defect that a nano material is liable to aggregate is alleviated, the dispersibility and the reaction activity of the nano material can be improved, and the purpose of treating wastes with wastes can be achieved. The method is simple to operate, easy in raw material obtaining, low in price and good in effect, novel ways for recycling of traditional Chinese medicine dregs can be developed, and novel ideas are provided for treatment on organic and heavymetal wastewater.

Description

technical field [0001] The invention belongs to the fields of water environment restoration and biomass resource utilization, and in particular relates to a traditional Chinese medicine residue biochar adsorbent loaded with sulfurized nano-zero-valent iron, a preparation method thereof, and an application thereof in wastewater treatment. Background technique [0002] In recent years, the pharmaceutical wastewater produced by the pharmaceutical industry has gradually become one of the serious sources of water pollution. In the pharmaceutical industry, antibiotic production occupies a special position. my country has become a major producer and user of antibiotics, with 30% of the world's output and 50% of the world's usage. The treatment of high-concentration wastewater produced along with the production and use of antibiotics has increasingly become the focus and difficulty of everyone's attention. For example, wastewater containing the quinolone antibiotic ciprofloxacin (C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/30C02F101/20C02F101/22C02F103/30
Inventor 商景阁高洁廖千家骅杨莉哲刘莹莹
Owner CHINA PHARM UNIV
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