Heavy metal ion adsorbent prepared from lotus leaves and preparation method thereof

A heavy metal and adsorbent technology, applied in the field of environmental treatment, can solve the problems of high operating costs, secondary pollution, and high energy consumption, and achieve the effects of low price, strong adsorption capacity, and large adsorption capacity.

Inactive Publication Date: 2015-05-13
安徽省中日农业环保科技有限公司
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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 heavy metal adsorbent

[0020] A kind of heavy metal adsorbent prepared by lotus leaf is prepared from the component raw materials of following weight (kg):

[0021] Fresh lotus leaf 25, attapulgite 8, calcium chloride 1.5, sodium chloride 1.5, sodium alginate 0.8, sodium oxalate 0.8, gum arabic 1.5, hydroxyethyl cellulose 0.8, gallic acid 0.15, additives 5, water 45 ;

[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...

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, in room temperature adsorption 1h, detect the concentration of remaining lead ion in the solution, record adsorption capacity and be 67.8mg / L g.

[0031] Take by weighing 0.5g of the adsorbent in Example 1, join 1L of heavy metal copper ion concentration in water of 0.1g / L, absorb at room temperature for 1h, detect the concentration of remaining copper ions in the solution, and record the adsorption capacity as 80.4mg / L g.

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Abstract

The invention discloses a heavy metal ion adsorbent prepared from lotus leaves. The heavy metal ion adsorbent is characterized by being prepared from the following raw materials in parts by weight: 20-30 parts of fresh lotus leaves, 5-10 parts of attapulgite, 1-2 parts of calcium chloride, 1-2 parts of sodium chloride, 0.5-1 part of sodium alginate, 0.5-1 part of sodium oxalate, 1-2 parts of Arabic gum, 0.5-1 part of hydroxyethyl cellulose, 0.1-0.2 part of gallic acid, 4-6 parts of an auxiliary agent and 40-60 parts of water. The heavy metal ion adsorbent is prepared from the lotus leaves as the main raw material, so that the source is wide, and the price is low; furthermore, the combining capacity and the adsorbability of heavy metals are strong, the adsorption capacity is large, safety and environmental protection are achieved, and toxic and harmful effects are avoided; secondary pollution to the environment during sewage treatment is avoided, the efficiency is high, the cost is low, and high economical value and practicability are achieved.

Description

technical field [0001] The invention relates to the field of environmental governance, in particular to a heavy metal adsorbent prepared from lotus leaves 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 consumpti...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/20
CPCB01J20/24B01J20/30B01J2220/485C02F1/286C02F2101/20
Inventor 章云张娃妮张贝尼
Owner 安徽省中日农业环保科技有限公司
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