학술논문
Efficient Removal of Antimony(V) from Antimony Mine Wastewater by Micrometer Zero-Valent Iron.
Document Type
Academic Journal
Author
Gan S; Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China.; Meng Y; Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China.; Lin Z; Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China.; Zheng C; Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China.; Shaanxi Qingling Chunchuang Environmental Protection Industry Technology Co., Ltd., Xi'an 710049, P. R. China.; Zhu A; Institute of Robotics & Intelligent Systems, Xi'an Jiaotong University, Xi'an 710049, P. R. China.; Ganjidoust H; Department of Environmental Engineering, Civil & Environmental Engineering Faculty, Tarbiat Modares University, P.O. Box 14115-111, Tehran 1411713116, Iran.; Ayati B; Department of Environmental Engineering, Civil & Environmental Engineering Faculty, Tarbiat Modares University, P.O. Box 14115-111, Tehran 1411713116, Iran.; Huo A; School of Water and Environment, Chang'an University, Xi'an 710054, P. R. China.
Source
Publisher: American Chemical Society Country of Publication: United States NLM ID: 9882736 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1520-5827 (Electronic) Linking ISSN: 07437463 NLM ISO Abbreviation: Langmuir Subsets: PubMed not MEDLINE; MEDLINE
Subject
Language
English
Abstract
This paper investigates the effectiveness of two commercial micron zero-valent irons (mZVIs) in removing Sb(V) from antimony mine wastewater. The wastewater contains a range of complex components and heavy metal ions, including As(V), which can impact the removal efficiency of mZVI. The study aims to provide insights into actual working conditions and focuses on influencing factors and standard conditions. The results demonstrate that mZVI can reduce Sb(V) concentration in the mine wastewater from 3875.7 μg/L to below the drinking water standard of 5 μg/L within 2 h. Adding a small amount of mZVI every 30 min helps to maintain a high removal rate. The study confirms the existence of a reduction reaction by changing the atmospheric conditions of the reaction, and the addition of 1,10-phenanthroline highlights the important role of active Fe(II) in the adsorption and removal of Sb(V) by mZVI. Additionally, the paper presents an innovative experimental method of acid treatment followed by alkali treatment, which proves the interfacial reaction between mZVI and Sb(V). Overall, the study demonstrates that the removal of Sb(V) by mZVI entails a dual function of reduction and adsorption, highlighting the potential of mZVI in repairing Sb(V) in antimony mine wastewater.