文档介绍：Compare study of a new type adsorbent and 2
traditional adsorbents on their efficiency for As (V)
adsorption
Zheng Lei, Ding Ai-zhong, Ding Wen-cheng
College of Water Sciences
Beijing Normal University
Beijing, China
******@bnu.
Abstract-Iron coated zeolite is made and its adsorption traditional adsorbents to get further understand of the
characteristics pared with activated alumina and zero-valent new adsorbent.
iron to get further understand of the new adsorbent. The results show
that iron coated zeolite removes As(V) in the similar with that by
activated alumina with removal rate of 50% in first 5min’s adsorption
but slower after 60 mins’ adsorption and faster than that by II. MATERIAL AND METHOD
zero-valent iron during the whole adsorption process. Iron coated
zeolite sorption fits Langmuir model the best. Capacities of activated A. Preparation of iron coated zeolite
alumina, iron coated zeolite and zero-valent iron for As(V) adsorption (1) Pre-treatment of natural zeolite
are , and mg/g, respectively. XRD analysis shows
that ponents on the surface of the used iron coated zeolite in Zeolite with 3-5mm of diameter is grinded in small size
this paper is FeOOH. To improve the adsorption efficiency of iron and screened to get the diameter of followed by 24hs
coated zeolite, diameter of the zeol