Adsorbing Colloid Flotation of As(V)–-Feasibility of Utilizing Streaming Current Detector
- 1 June 1996
- journal article
- research article
- Published by Taylor & Francis in Separation Science and Technology
- Vol. 31 (11) , 1629-1641
- https://doi.org/10.1080/01496399608001417
Abstract
A feasibility study was conducted to assess the application of a streaming current detector (SCD) in flotation processes. The adsorbing colloid flotation (ACF) of As(V) with iron oxide and sodium dodecylsulfate (SDS) was investigated. Both zeta potential and streaming current (SC) reading of each colloidal systems were measured. Results show SC changed with pH values and can be well correlated to zeta potential. The optimum pH range for As(V) removal was found to be ca. 4–5. Removal of As(V) as affected by SDS concentration, colloidal concentration, and gas flow rate were investigated. It is proposed that both free arsenic ox anions and iron-arsenate complex were involved in the process. Preliminary results show it feasible for SCD to be utilized in adsorbing colloid flotation.Keywords
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