Removal of Heavy Metal Ion Using Polymer-Functionalized Activated Carbon: Aspects of Environmental Economic and Chemistry Education

Hoang Thu Ha; Nguyen Thi Huong; Le Linh Dan; Nguyen Duy Tung; Vinh Bao Trung; Tran Dinh Minh

doi:10.1155/2020/8887488

Removal of Heavy Metal Ion Using Polymer-Functionalized Activated Carbon: Aspects of Environmental Economic and Chemistry Education

J Anal Methods Chem. 2020 Sep 7:2020:8887488. doi: 10.1155/2020/8887488. eCollection 2020.

Authors

Hoang Thu Ha¹, Nguyen Thi Huong², Le Linh Dan³, Nguyen Duy Tung⁴, Vinh Bao Trung⁵, Tran Dinh Minh⁶

Affiliations

¹ Faculty of Pedagogy, VNU University of Education, Vietnam National University, Cau Giay, Hanoi 100000, Vietnam.
² Faculty of Educational Management, VNU University of Education, Vietnam National University, Cau Giay, Hanoi 100000, Vietnam.
³ Hanoi-Amsterdam High School for the Gifted, Hanoi, Vietnam.
⁴ Department of Physics, High School for Gifted Students, Hanoi University of Science, Vietnam National University, Hanoi, Vietnam.
⁵ High School of Education Sciences (HES), VNU University of Education, Vietnam National University, Cau Giay, Hanoi 100000, Vietnam.
⁶ Faculty of Educational Technology, VNU University of Education, Vietnam National University, Cau Giay, Hanoi 100000, Vietnam.

Abstract

Numerous countries have shown signs of environmental pollution to prioritize economic growth and benefits, leading to seriously contaminated waters. This work indicated the method to synthesize a green material, which could remove contaminants to protect the natural environment. The porosity and functionality effects of amine-functionalized activated carbon (AFAC) enhanced the removal of toxic heavy metals (THMs) in aqueous solution. The raw activated carbon (RAC) was thermally modified with ultrahigh pure nitrogen (UHPN) at 500°C and 1000°C and then amine-functionalized with coupling agent of aminopropyltriethoxysilane (APS). They were denoted as AFAC-5 and AFAC-10, respectively. The data showed an enhanced metal adsorption capacity of the AFACs, because the modification produced more desired porosity and increased amine functional groups. AFAC-10, modified at a higher temperature, showed much higher THM adsorption capacity than AFAC-5, modified at a lower temperature, and RAC. The adsorption capacity decreased in the following order: Ni > Cd > Zn, which was in good agreement with the increasing electronegativity and ionic potential and the decreasing atomic radius. The maximum THM adsorption capacity of AFAC-10 for Ni, Cd, and Zn was 242.5, 226.9, and 204.3 mg/g, respectively.