Factorial experimental design application in modification of volcanic ash as a natural adsorbent with Fenton process for arsenic removal
Factorial experimental design application in modification of volcanic ash as a natural adsorbent with Fenton process for arsenic removal
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DOI：
10.1080/09593330.2011.554887
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发表时间：
2012-01-01
影响因子：
2.8
通讯作者：
Ahmadi, Mehdi
中科院分区：
文献类型：
--
作者：
Jaafarzadeh, Neamat;Amiri, Hoda;Ahmadi, Mehdi
本文描述了一种用芬顿试剂 (FMVA) 改性火山灰的实验设计技术，将其用作天然吸附剂从水溶液中去除 As(III) 和 As(V)。研究了pH、接触时间和Fe2+/H2O2对改性火山灰除砷的影响。据观察，砷去除效率受到其中两个参数的影响。 Fe2+/H2O2 比率是影响 As(III) 和 As(V) 吸附的重要因素 (P = 0.000)。 pH 对 As(V) 吸附 (P = 0.003) 的影响比 As(III) 吸附 (P = 0.02) 更显着。观察到，FMVA 在 pH 2、Fe+2/H2O2 = 0.06 和接触时间 30 分钟时获得最大 As(III) 吸附（39 μg As(III)/mg FMVA），而在 pH 5、Fe+2/H2O2 = 0.06 和接触时间 30 分钟（41 μg As(V)/mg FMVA）条件下获得最大 As(V) 吸附。
This paper describes an experimental design technique for the modification of volcanic ash with Fenton reagent (FMVA) to be used as a natural adsorbent in the removal of As(III) and As(V) from aqueous solution. The influence of pH, contact time and Fe2+/H2O2 on arsenic removal by the modified volcanic ash was investigated. It was observed that the arsenic removal efficiency was influenced by two of these parameters. The Fe2+/H2O2 ratio is an important factor that affects both As(III) and As(V) adsorption (P = 0.000). The pH affects As(V) adsorption (P = 0.003) more significantly than As(III) adsorption (P = 0.02). It was observed that the maximum As(III) adsorption by the FMVA was obtained at pH 2, Fe+2/H2O2 = 0.06 and 30 min of contact time (39 mu g As(III) per mg FMVA), whereas the maximum As(V) adsorption was obtained under the conditions of pH 5, Fe+2/H2O2 = 0.06 and 30 min of contact time (41 mu g As(V) per mg FMVA).