Synthesis of a Magnetic Carnation-like Hydroxyapatite/Basic Calcium Carbonate Nanocomposite and Its Adsorption Behaviors for Lead Ions in Water
Haifeng Guo,
Siru Hu,
Zongli Wang,
Yutong Li,
Xinshuang Guo,
Ziling He,
Wenbin Wang,
Jun Feng,
Kangyun Yang,
Hong Zheng
Affiliations
Haifeng Guo
Engineering & Technology Research Center for Environmental Protection Materials and Equipment of Jiangxi Province, College of Materials and Chemical Engineering, Pingxiang University, Pingxiang 337055, China
Siru Hu
Engineering & Technology Research Center for Environmental Protection Materials and Equipment of Jiangxi Province, College of Materials and Chemical Engineering, Pingxiang University, Pingxiang 337055, China
Zongli Wang
Engineering & Technology Research Center for Environmental Protection Materials and Equipment of Jiangxi Province, College of Materials and Chemical Engineering, Pingxiang University, Pingxiang 337055, China
Yutong Li
School of Statistics and Data Science, Nankai University, Tianjin 300071, China
Xinshuang Guo
Engineering & Technology Research Center for Environmental Protection Materials and Equipment of Jiangxi Province, College of Materials and Chemical Engineering, Pingxiang University, Pingxiang 337055, China
Ziling He
Engineering & Technology Research Center for Environmental Protection Materials and Equipment of Jiangxi Province, College of Materials and Chemical Engineering, Pingxiang University, Pingxiang 337055, China
Wenbin Wang
Engineering & Technology Research Center for Environmental Protection Materials and Equipment of Jiangxi Province, College of Materials and Chemical Engineering, Pingxiang University, Pingxiang 337055, China
Jun Feng
Engineering & Technology Research Center for Environmental Protection Materials and Equipment of Jiangxi Province, College of Materials and Chemical Engineering, Pingxiang University, Pingxiang 337055, China
Kangyun Yang
Engineering & Technology Research Center for Environmental Protection Materials and Equipment of Jiangxi Province, College of Materials and Chemical Engineering, Pingxiang University, Pingxiang 337055, China
Hong Zheng
Engineering & Technology Research Center for Environmental Protection Materials and Equipment of Jiangxi Province, College of Materials and Chemical Engineering, Pingxiang University, Pingxiang 337055, China
Calcium-enriched compounds have great potential in the treatment of heavy-metal contaminated wastewater. Preparing stable basic calcium carbonate (BCC), which is a calcium-enriched compound, and applying it in practice is a great challenge. This work investigated the formation process of hierarchical hydroxyapatite (HAP)/BCC nanocomposites and their adsorption behaviors regarding lead ions (Pb2+). The morphology of the HAP/BCC nanocomposite was controlled by the addition of monododecyl phosphate (MDP). The carnation-like HAP/BCC nanocomposite was achieved with the addition of 30 g of MDP. The carnation-like HAP/BCC nanocomposite had a high Pb2+ adsorption capacity of 860 mg g−1. The pseudo-second-order and Freundlich model simulation results indicated that the adsorptions of Pb2+ on the nanocomposites belonged to the chemisorption and multilayer adsorption processes. The main effective adsorption components for the nanocomposites were calcium-enriched HAP and BCC. Through the Ca2+ ions exchanging with Pb2+, the HAP and BCC phases were converted to hydroxyl-pyromorphite (Pb-HAP) and hydrocerussite (Pb3(CO3)2(OH)2), respectively. The carnation-like HAP/BCC nanocomposite has great potential in the treatment of heavy metal ions. This facile method provides a new method for preparing a stable HAP/BCC nanocomposite and applying it in practice.
