Functionalized porous nanoscale Fe3O4 particles supported biochar from peanut shell for Pb(II) ions removal from landscape wastewater

• Published in: Environmental science and pollution research international Vol. 29; no. 25; pp. 37159 - 37169
• Main Authors: Jin, Xiaojun, Liu, Renrong, Wang, Huifang, Han, Li, Qiu, Muqing, Hu, Baowei
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.05.2022; Springer Nature B.V
• Subjects: Adsorption; Aquatic Pollution; Aqueous solutions; Atmospheric Protection/Air Quality Control/Air Pollution; Charcoal; Chemical precipitation; Composite materials; Earth and Environmental Science; Ecotoxicology; Endothermic reactions; Environment; Environmental Chemistry; Environmental Health; Environmental science; Health risks; Heavy metals; Ion exchange; Ions; Iron oxides; Lead; Metal industry wastewaters; Peanuts; Public health; Research Article; Waste Water Technology; Wastewater; Wastewater treatment; Water Management; Water Pollution Control; Nanoscale Fe; Removal; Pb(II); Peanut shell; O
• ISSN: 0944-1344; 1614-7499
• DOI: 10.1007/s11356-021-18432-z

The large amounts ofheavy metal from landscape wastewater have become serious problems of environmental pollution and risks for human health. The development of efficient novel adsorbent is a very important for treatment of heavy metal. The functionalized porous nanoscale Fe 3 O 4 particles supported biochar from peanut shell (PS-Fe 3 O 4 ) for removal of Pb(II) ions from aqueous solution was investigated. The characterization of PS-Fe 3 O 4 composites showed that biochar was successfully coated with porous nanoscale Fe 3 O 4 particles. The pseudo second-order kinetic model and Langmuir model were more fitted for describing the adsorption process of Pb(II) ions in solution. The adsorption process of Pb(II) ions removal by PS-Fe 3 O 4 composites was a spontaneous and endothermic process. The adsorption mechanisms of Pb(II) ions by PS-Fe 3 O 4 composites were mainly controlled by the chemical adsorption process. The maximum adsorption capacity of Pb(II) ions removal in solution by PS-Fe 3 O 4 composites reached 188.68 mg/g. The removal mechanism included Fe–O coordination reaction, co-precipitation, complexation reaction, and ion exchange. PS-Fe 3 O 4 composites were thought as a low-cost, good regeneration performance, and high efficiency adsorption material for removal of Pb(II) ions in solution.