Fiber natural polymeric adsorbent and application thereof

A technology of natural macromolecules and adsorbents, applied in the field of water treatment, can solve the problem of not involving heavy metal ion-containing naphthol wastewater treatment and the like, and achieve the effect of good adsorption performance

Inactive Publication Date: 2013-05-15
GANSU TIPTOP PLANT TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these adsorbents have not been involved in the treatment of wastewater containing heavy metal ions, dyes and naphthols.

Method used

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  • Fiber natural polymeric adsorbent and application thereof
  • Fiber natural polymeric adsorbent and application thereof
  • Fiber natural polymeric adsorbent and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Take 10 g of fresh bean dregs, wash them three times with distilled water, and filter to remove water-soluble substances. Then soak in 60% ethanol for 3 h, filter, wash once with distilled water, then soak in sodium bicarbonate with pH = 8 for 1 h, filter, wash with ethanol and distilled water respectively to remove other small molecular substances; vacuum-dry at 65°C, crush , passed through a 100-mesh sieve to obtain fiber-based natural polymer adsorbent (SHR).

[0045] The adsorption performance of the fiber-based natural polymer adsorbent: the removal rate of lead ions in wastewater is 99.11%; the removal rate of copper ions is 82.55%; the decolorization rate of methylene blue is 98.54%; the decolorization rate of malachite green is 98%; the decolorization rate of basic fuchsin is 95.72%; the removal rate of naphthol is 69.36%.

Embodiment 2

[0047] Take 30 g of fresh bean dregs, wash with distilled water three times, and filter to remove water-soluble substances. Then soak in 75% ethanol for 1 h, filter, wash with distilled water twice, then soak in sodium bicarbonate with pH = 8 for 5 h, filter, wash with ethanol and distilled water respectively, remove other small molecular substances, vacuum dry and pulverize at 35°C , passed through a 100-mesh sieve to obtain fiber-based natural polymer adsorbent (SHR). Its adsorption performance is the same as that of Example 1.

Embodiment 3

[0049] Take 30 g of fresh bean dregs, wash with distilled water 5 times, and filter to remove water-soluble substances. Then soak in 75% ethanol for 5 h, filter, wash twice with distilled water, then soak in sodium bicarbonate with pH = 9 for 1 h, filter, wash with ethanol and distilled water respectively, remove other small molecular substances, vacuum dry and pulverize at 45°C , passed through a 100-mesh sieve to obtain fiber-based natural polymer adsorbent (SHR). Its adsorption performance is the same as that of Example 1.

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Abstract

The invention provides a fiber natural polymeric adsorbent, and belongs to the technical field of wastewater treatment. The fiber natural polymer uses bean dregs as a fiber source. Fresh bean dregs are successively treated by distilled water, ethanol solution and sodium bicarbonate solution for processing, so as to remove water-soluble substances and small molecular substances; and then the bean dregs are subjected to drying, crushing and sieving through a 100 mesh screen. Adsorption tests prove that the fiber natural polymer adsorbent has excellent adsorption performance on wastewater containing heavy metal lead ions and copper ions, a dye methylene blue, malachite green, basic fuchsin and organic pollutant naphthol. Therefore, the fiber natural polymeric adsorbent can be used for industrial treatment on wastewater containing heavy metal ion, dyes and organics. At the same time, the adsorbent mainly comprises components including cellulose, lignin and a small amount of glycoprotein, and is a non-toxic, pollution-free edible natural polymer with good compatibility; therefore, the adsorbent can also be used as a rapid antidote for heavy metal poisoning.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to the preparation of a fiber-based natural polymer adsorbent; the invention also relates to the use of the adsorbent in containing heavy metal lead ions and copper ions, dyes methylene blue, malachite green, basic fuchsin and Application in the treatment of wastewater containing naphthol. Background technique [0002] In recent years, with the gradual increase in the discharge of industrial and agricultural wastewater and urban domestic sewage, the waters of rivers, rivers, lakes, and reservoirs in my country have generally been polluted to varying degrees, and the water quality has continued to deteriorate, causing serious harm to the ecological environment and human health. Traditional wastewater treatment methods include ion exchange, solvent extraction, chemical precipitation, redox, adsorption, electrochemical treatment and membrane technology. , prone to secondary poll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/62C02F1/58
Inventor 王荣民李慧茹何玉凤黄一君张立佳
Owner GANSU TIPTOP PLANT TECH CORP
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