Abstract
In this study, a high-efficiency magnetic heavy metal flocculant MF@AA was prepared based on carboxymethyl chitosan and magnetic Fe3O4. It was characterized by SEM, FTIR, XPS, XRD and VSM, and the Cu(II) removal rate was used as the evaluation basis for the preparation process. The effects of AMPS content, total monomer concentration, photoinitiator concentration and reaction time on the performance of MF@AA flocculation to remove Cu(II) were studied. The characterization results show that MF@AA has been successfully prepared and exhibits good magnetic induction characteristics. The synthesis results show that under the conditions of 10% AMPS content, 35% total monomer concentration, 0.04% photoinitiator concentration, and 1.5 h reaction time, the best yield of MF@AA is 77.69%. The best removal rate is 87.65%. In addition, the response surface optimization of the synthesis process of MF@AA was performed. The optimal synthesis ratio was finally determined as iron content 6.5%, CMFS: 29.5%, AM: 53.9%, AMPS: 10.1%. High-efficiency magnetic heavy metal flocculant MF@AA shows excellent flocculation performance in removing Cu(II). This research provides guidance and ideas for the development of efficient and low-cost flocculation technology to remove Cu(II) in wastewater.
Highlights
Water sources are severely polluted by heavy metal ions and organic compounds produced daily by industrial, agricultural, transportation, and residential activities [1].heavy metal ions in wastewater produced by industrial activities such as metal smelting, electrolysis, and electroplating cannot be degraded by microorganisms, resulting in soil, water, and air pollution [2]
Due to the non-degradability, bioaccumulation and toxicity of heavy metals, it is essential to solve the problem relating to heavy metal pollution to achieve global sustainability [3]
Among all the listed heavy metal pollutants, copper in the water enters the human body through the food chain, which will have a subtle impact on human health, such as liver failure, headache, hypoglycemia, and nervous system poisoning, so it is necessary to remove copper ions in wastewater [4]
Summary
Water sources are severely polluted by heavy metal ions and organic compounds produced daily by industrial, agricultural, transportation, and residential activities [1]. Heavy metal ions in wastewater produced by industrial activities such as metal smelting, electrolysis, and electroplating cannot be degraded by microorganisms, resulting in soil, water, and air pollution [2]. Due to the non-degradability, bioaccumulation and toxicity of heavy metals (such as lead, cadmium, mercury, chromium, copper, zinc, nickel, etc.), it is essential to solve the problem relating to heavy metal pollution to achieve global sustainability [3]. Among all the listed heavy metal pollutants, copper in the water enters the human body through the food chain, which will have a subtle impact on human health, such as liver failure, headache, hypoglycemia, and nervous system poisoning, so it is necessary to remove copper ions in wastewater [4]. There is an urgent need to develop a cost-effective water treatment method
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