Application of zero-valent iron( ZVI)technology for arsenic removal from aqueous environment

The research progress on arsenic removal techniques from aqueous environment by zero-valent iron( ZVI)is summarized in this article. The mechanisms and influence factors of arsenic wastewater treated by zero-valent iron are discussed,and the application of nano-scale zero-valent iron and combined zero-valent iron for arsenic removal from aqueous environment is introduced. Finally,the future research directions of treating arsenic polluted wastewater with zero-valent iron are pointed out.