Coconut shell-based heavy metal adsorbent and preparation method thereof

A heavy metal and adsorbent technology, applied in the field of environmental governance, can solve problems such as secondary pollution, high energy consumption, and large investment, and achieve the effect of strong adsorption capacity and large adsorption capacity

Inactive Publication Date: 2015-06-03
章云
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional heavy metal wastewater treatment methods mainly include chemical precipitation method, ion exchange method, membrane separation method, etc. These meth

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: the preparation of coconut shell-based heavy metal adsorbent

[0020] A coconut shell-based heavy metal adsorbent prepared from the following components by weight (kg):

[0021] Coconut shell 25, plant ash 8, peanut shell 4, xanthan gum 4, maltodextrin 1.5, malic acid 1.5, xylitol 1.5, sodium polyacrylate 0.8, sodium humate 0.15, sodium stearoyl lactylate 1.5, additives 7 , water 70;

[0022] Wherein, the auxiliary agent is made of the following raw materials in parts by weight:

[0023] Fresh tea leaves 25, fresh pine needles 4, fresh mulberry leaves 4, citric acid 3, oxalic acid 0.8, sodium citrate 1.5, sodium lauroyl sarcosinate 0.8, water 90;

[0024] The preparation method of auxiliary agent is:

[0025] Clean and crush fresh tea leaves, fresh pine needles and fresh mulberry leaves, mix them with sodium citrate, and grind them evenly, first add citric acid, oxalic acid and water and stir for 6 hours at 90°C and 400r / min, then add sodium lauroyl sar...

Embodiment 2

[0029] Embodiment 2: to the adsorption effect of heavy metal lead and copper

[0030] Take by weighing sorbent material 0.5g among the embodiment 1, join 1L heavy metal lead ion concentration in the water of 0.1g / L, absorb 1h at room temperature, detect the concentration of remaining lead ion in the solution, record adsorption capacity and be 37.2mg / L g.

[0031] Take by weighing sorbent material 0.5g among the embodiment 1, join 1L heavy metal copper ion concentration in the water of 0.1g / L, absorb 1h at room temperature, detect the concentration of residual copper ion in the solution, record the adsorption capacity to be 44.5mg / L g.

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Abstract

The invention discloses a coconut shell-based heavy metal adsorbent which is characterized by being prepared from the following raw materials in parts by weight: 20-30 parts of coconut shells, 5-10 parts of plant ash, 3-5 parts of peanut shells, 3-5 parts of xanthan gum, 1-2 parts of maltodextrin, 1-2 parts of malic acid, 1-2 parts of xylitol, 0.5-1 part of sodium polyacrylate, 0.1-0.2 part of sodium humate, 1-2 parts of sodium stearyl lactate, 6-8 parts of aids and 60-80 parts of water. The heavy metal adsorbent is prepared by effectively recycling agricultural fertilizers and has the characteristics of high metal binding and adsorbing capability and high adsorption capacity. Meanwhile, the heavy metal adsorbent has an effect of adsorbing and removing organic pollutants in the water body and is safe, environment-friendly, non-toxic and harmless, secondary pollution introduced into the environment is avoided in the wastewater treatment process, energy conservation and waste utilization are promoted, and the adsorbent is economical and practical.

Description

technical field [0001] The invention relates to the field of environmental treatment, in particular to a coconut shell-based heavy metal adsorbent and a preparation method thereof. Background technique [0002] With the development of the global economy and society, environmental pollution is becoming more and more serious. Industrial wastewater, as the main source of environmental pollution, has been a major problem that has plagued countries all over the world for a long time. Heavy metal ions in industrial wastewater have strong carcinogenic, teratogenic, and mutagenic effects, which pose a serious threat to human health and the ecological environment. Therefore, it is very important to strictly control the pollution of heavy metal wastewater. [0003] Traditional heavy metal wastewater treatment methods mainly include chemical precipitation, ion exchange, membrane separation, etc. These methods usually have problems such as large investment, high energy consumption, high...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/62
Inventor 章云
Owner 章云
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