Biosorption and Toxicity Response to Arsenite (As(III) in Scenedesmus quadricauda

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dc.contributor.authorZhang, Carl
dc.date.accessioned2020-04-17T15:41:05Z
dc.date.available2020-04-17T15:41:05Z
dc.date.issued2013
dc.description.abstractToxicity and biosorption responses to arsenite (As[III]) were examined in a 96-h exposure study using Scenedesmus quadricauda, one of the most popular green algae distributed in freshwaters in China. Results indicated that the pH-dependent distribution of two arsenite species (H2AsO3(-) and H3AsO3) played an important role in biosorption and toxicity. The undissociated H3AsO3 was more toxic than its monoanionic H2AsO3(-) through comparison of algal cell numbers, chlorophyll-a contents, and algal ultrastructural changes observed with transmission electron microscopy. An effective biosorption of 89.0mgg(-1) at 100mgL(-1) As[III] was found in the treatments with an initial pH of 9.3 and 25.2μgg(-1) at 0.03mgL(-1) As[III] at an initial pH of 8.2 as a result of the predominant species of H2AsO3(-) under the ambient pH and Eh conditions. Our results imply that S. quadricauda may provide a new means for the removal of toxic arsenite species present in contaminated surface water.en_US
dc.identifier.citationZhang, J, Ding, T, Zhang C (2013), Biosorption and toxicity responses to arsenite (As[III]) in Scenedesmus quadricauda, Chemosphere, 92:1077-1084en_US
dc.identifier.urihttps://hdl.handle.net/10657.1/2262
dc.publisherCHempsphereen_US
dc.subjectAdsorption Anions/chemistry Arsenic/chemistry Arsenic/toxicity Arsenites/chemistry Arsenites/toxicity Chlorophyll/metabolism Chlorophyll A Fresh Water/chemistry Hydrogen-Ion Concentration Scenedesmus/drug effects Scenedesmus/metabolism Scenedesmus/ultrastructure Spectroscopy, Fourier Transform Infrared Water Pollutants, Chemical/chemistry Water Pollutants, Chemical/toxicityen_US
dc.titleBiosorption and Toxicity Response to Arsenite (As(III) in Scenedesmus quadricaudaen_US
dc.typeArticleen_US

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College of Science and Engineering
Chunlong (Carl) Zhang