Preparation method of plasma treatment modified Luffa Vegetable Sponge wastewater adsorbent

A plasma and loofah technology, applied in water/sewage treatment, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve serious environmental problems and other problems, achieve good adsorption effect, improve reactivity, and increase specific surface area. big effect

Inactive Publication Date: 2017-07-25
安徽月娇家具有限公司
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Problems solved by technology

[0004] In this paper, the molecular structure of cellulose has indeed been changed by esterification reaction. Carboxyl groups are introduced through esterification reaction to increase the adsorption sites, and its

Method used

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Embodiment Construction

[0016] A kind of preparation method of plasma treatment modified loofah waste water adsorbent, it is characterized in that, has the following processing steps:

[0017] (1) Loofah pretreatment: peel the ripe fruit of loofah, cut into small pieces, wash with water, dry and crush through a 10-mesh sieve to obtain pretreated loofah;

[0018] (2) Plasma treatment of loofah: 100 mg of pretreated loofah powder in step (1) was weighed and placed in a plasma quartz reactor under normal temperature and pressure conditions.

[0019] (3) Preparation of egg shell calcium liquid activator: clean the egg shell, dry and grind it into fine particles, soak it in 25wt.% acetic acid, stir and filter to obtain the calcium liquid activator;

[0020] (4) Put the loofah after plasma treatment in step (2) into the calcium liquid activator prepared in step (3), impregnate according to a certain solid-liquid ratio, filter with suction, wash until neutral, and place in vacuum Dry in a drying oven.

[...

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Abstract

The invention discloses a preparation method of a plasma treatment modified Luffa Vegetable Sponge wastewater adsorbent. The surface of Luffa Vegetable Sponge is pretreated through using a plasma treatment technology, and carboxyl groups are generated on the surface of fibers due to the surface oxidation effect, so the adsorption sites are increased; an etching effect makes the surface of Luffa Vegetable Sponge surfaces have obvious grooves, so the specific surface area is increased, and the intermolecular hydrogen bond effect is decreased, thereby the crystallization degree is decreased; and egg shell wastes are comprehensively used as a calcification liquid to chemically modify the plasma treated Luffa Vegetable Sponge, the surface of the Luffa Vegetable Sponge is loaded with calcium, and ion exchange increases the adsorption ability, so the calcium loaded Luffa Vegetable Sponge has a good adsorption effect on copper ions, and can effectively remove Cd<2+>, Pb<2+>, Hg<2+> and other heavy metal ions from wastewater. Compared with the prior art, the method has the advantages of simplicity in operation, water saving, no pollution, and meeting of the requirements of green chemistry and sustainable development.

Description

technical field [0001] The invention relates to the technical field of biosorbent preparation, in particular to a method for preparing a plasma-treated modified loofah wastewater adsorbent. Background technique [0002] Industrial wastewater and urban domestic sewage contain a large amount of heavy metal ions. These heavy metals are enriched in organisms through the food chain, posing a serious threat to human health and the ecological environment. Although the traditional chemical method has a certain removal effect, the production cost is relatively high, and most of them will cause secondary pollution to the environment. Therefore, the search for environmentally friendly adsorbents has become the focus of attention today. As a renewable, biodegradable and biocompatible adsorbent, biosorbents are widely used for the removal of heavy metal ions. [0003] Commonly used biosorbents include starch, cellulose, lignin, and chitosan. In the past, researchers used soybean hulls...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28
CPCB01J20/24B01J20/02B01J2220/4825C02F1/286
Inventor 屠明鑫
Owner 安徽月娇家具有限公司
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