Visual MINTEQ simulation for prediction of the adsorption of arsenic on ferrihydrite

R. Irunde, P. Bhattacharya, J. Ijumulana, F.J. Ligate, A. Ahmad, F. Mtalo, J. Mtamba

Research output: Chapter in Book/Report/Conference proceedingConference paperAcademicpeer-review

Abstract

The surface of ferrihydrite adsorbs arsenic (As) effectively. In this investigation, the As laced water samples collected from Geita and Mara regions within the Lake Victoria Basin (LVB) under DAFWAT project were simulated onVisual MINTEQ 3.1 software to determine the amount of ferrihydrite required to adsorb a given amount of As from water. Model simulations show that As concentration of ≤1 mM can be completely adsorbed by 4 g L−1 ferrihydrite. Previous studies show that the lower pH 4 to 4.5 influences adsorption, while it decreases as pH increases as well as when As concentration increases. The increase of adsorbent dose to 4 g L−1 has shown to improve As(V) adsorption on pH 5 to 8 at 100%. The amount of adsorbent can now be used for laboratory adsorption experiments by using iron-based materials or commercial ferrihydrite.

Original languageEnglish
Title of host publicationEnvironmental Arsenic in a ChangingWorld - 7th International Congress and Exhibition Arsenic in the Environment, 2018
EditorsYong-Guan Zhu, Huaming Guo, Prosun Bhattacharya, Jochen Bundschuh, Arslan Ahmad, Ravi Naidu
PublisherCRC Press/Balkema
Pages435-436
Number of pages2
ISBN (Print)9781138486096
DOIs
Publication statusPublished - Jul 2018
Event7th International Congress and Exhibition Arsenic in the Environment, 2018 - Beijing, China
Duration: 1 Jul 20186 Jul 2018

Publication series

NameEnvironmental Arsenic in a ChangingWorld - 7th International Congress and Exhibition Arsenic in the Environment, 2018

Conference

Conference7th International Congress and Exhibition Arsenic in the Environment, 2018
CountryChina
CityBeijing
Period1/07/186/07/18

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