Unlock instant, AI-driven research and patent intelligence for your innovation.

A composite adsorbent for adsorbing heavy metals and its preparation method

A technology for heavy metal adsorption and composite adsorption, applied in chemical instruments and methods, other chemical processes, etc., can solve problems such as ineffective utilization and waste, and achieve the effect of realizing secondary utilization, expanding the scope of utilization, and being beneficial to environmental protection.

Active Publication Date: 2018-10-19
桂润环境科技股份有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, reed pulp residue, as a kind of papermaking waste, cannot be effectively utilized and becomes a waste

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The invention discloses a composite adsorbent for adsorbing heavy metals. The raw material formula is composed of the following components in parts by weight:

[0023] 50 parts of reed pulp residue;

[0024] Concentration is 10 parts of 5% sodium hydroxide solution;

[0025] 10 parts of slag;

[0026] Water hyacinth 20 parts.

[0027] The invention also discloses the preparation method of the composite adsorbent for adsorbing heavy metals, which comprises the following steps:

[0028] A. Seal the reed pulp slurry for 12 hours.

[0029] B. Grind the treated reed pulp slurry to powder and set aside.

[0030] C. Add sodium hydroxide solution to the ground reed pulp slag powder in step B, and treat in a constant temperature water bath; after being treated with sodium hydroxide solution, the reed pulp slag initially has the ability to absorb heavy metals.

[0031] D. Wash the reed pulp slurry treated in step C until the pH value is neutral, and dry to obtain a semi-fini...

Embodiment 2

[0037] This embodiment is basically the same as Example 1, except that the raw material formula of the composite adsorbent of this embodiment is composed of the following components in parts by weight:

[0038] 100 parts of reed pulp residue;

[0039] Concentration is 15 parts of 5% sodium hydroxide solution;

[0040] 15 parts of slag;

[0041] Water hyacinth 15 parts.

[0042] The adsorption capacity of the composite adsorbent obtained in this example to heavy metals is equivalent to Example 1.

Embodiment 3

[0044] This embodiment is basically the same as Example 1, except that the raw material formula of the composite adsorbent of this embodiment is composed of the following components in parts by weight:

[0045] 78 parts of reed pulp residue;

[0046] Concentration is 10 parts of 5% sodium hydroxide solution;

[0047] 12 parts of slag;

[0048] Water hyacinth 17 parts.

[0049] The composite adsorbent obtained in this example has a slightly better adsorption capacity for heavy metals than Example 1, but the efficiency is higher, and the adsorption efficiency is about 1.5-2 times that of Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a composite adsorbent for adsorbing heavy metal and a preparation method thereof. The composite adsorbent is prepared from, by weight, 50-100 parts of reed pulp residues, 10-15 parts of a 5% sodium hydroxide solution, 10-15 parts of furnace slag and 15-20 parts of eichhornia crassipes. The reed pulp residues are treated through the sodium hydroxide solution, thereby having the ability of absorbing heavy metal, the utilization range of the pulp residues is enlarged, the secondary utilization of the reed pulp residues is achieved, environmental protection is facilitated, the requirement for sustainable development is met, and the composite adsorbent is worthy of application and popularization.

Description

technical field [0001] The invention relates to a composite adsorbent and a preparation method thereof, in particular to a composite adsorbent for adsorbing heavy metals and a preparation method thereof. Background technique [0002] As people's awareness of environmental protection continues to strengthen, the country's environmental protection requirements are becoming more and more stringent, and the pressure on the paper industry is also increasing. However, the reed pulp residue, as a kind of papermaking waste, cannot be effectively utilized and becomes a waste. [0003] Therefore, the prior art still needs to be improved and developed. Contents of the invention [0004] The object of the present invention is to provide a composite adsorbent for adsorbing heavy metals and a preparation method thereof, so as to expand the utilization range of pulp residue. [0005] The technical scheme of the present invention is as follows: a composite adsorbent for adsorbing heavy ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30
CPCB01J20/24
Inventor 黄文辉
Owner 桂润环境科技股份有限公司