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

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...

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Problems solved by technology

[0003] Traditional heavy metal wastewater treatment methods mainly include chemical precipitation method, ion exchange method, membrane separation method, etc. These methods usually have problems such as large investment, high energy consumption, high operating cost, and easy to produce secondary pollution, so their application is limited