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...