NDLI: Screening of hexavalent chromium biosorbent from marine algae

Content Provider	Springer Nature Link
Author	Lee, D. C. Park, C. J. Yang, J. E. Jeong, Y. H. Rhee, H. I.
Copyright Year	2000
Abstract	A highly chromate-selective biosorbent with high adsorption capacity was found by examining the chromate adsorption capacities of 48 species of red, brown, or green marine algae sampled from the east coast of Korea. As a result of screening, a red marine alga showed excellent adsorption characteristics. It was identified as Pachymeniopsis sp. The timing of the sampling of Pachymeniopsis sp. did not affect the adsorption capacity of the alga but the optimum period for mass collection was April–May. The alga also showed high selectivity for chromate and its adsorption capacity for other heavy metal ions such as cadmium and manganese was relatively low. An investigation of the adsorption isotherm of Pachymeniopsis sp. as a dried powder for chromate adsorption at 25 °C showed Langmuir-type dependence. The maximum chromate adsorption capacity of the selected alga was about 225 mg/g. The desorption of adsorbed chromate from Pachymeniopsis sp. was done by treating samples with 1 N NaOH. It was confirmed that ion exchange type adsorption was observed with anion exchangers but not with cation exchangers. Therefore it is believed that the chromate adsorption is based on the anionic exchange of Pachymeniopsis sp.
Starting Page	597
Ending Page	600
Page Count	4
File Format	PDF
ISSN	01757598
Journal	Applied Microbiology and Biotechnology
Volume Number	54
Issue Number	4
e-ISSN	14320614
Language	English
Publisher	Springer-Verlag
Publisher Date	2000-10-13
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article
Subject	Medicine Applied Microbiology and Biotechnology Biotechnology

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