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NMR imaging of heavy metal absorption in alginate, immobilized cells, and kombu algal biosorbents
Author(s) -
Nestle Nikolaus F. E. I.,
Kimmich Rainer
Publication year - 2000
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/(sici)1097-0290(19960905)51:5<538::aid-bit5>3.0.co;2-d
Subject(s) - metal ions in aqueous solution , absorption (acoustics) , biosorption , chemistry , copper , biomass (ecology) , heavy metals , metal , environmental chemistry , adsorption , chemical engineering , nuclear chemistry , materials science , geology , sorption , organic chemistry , composite material , oceanography , engineering
In this contribution, an NMR imaging study of heavy metal absorption in alginate, immobilized‐cell biosorbents, and kombu ( Laminaria japonica ) algal biomass is presented. This method provides the good possibility of directly monitoring the time evolution of the spatial distribution of the ions in the materials. From these results, we demonstrate that rare earth ions are absorbed with a steep reaction front that can be described very well with a modified shrinking core model, while copper ions are absorbed with a more diffuse front.