Photoactive Ion Exchange Resins

Mohamed A. Ibrahim, Mark Nimlos, Jonathan Filley, Daniel Blake, Andrew Watt, Edward Wolfrum, S. Muralidharan

Research output: Contribution to conferencePaperpeer-review

2 Scopus Citations


As the forest product industry move towards closed cycle pulping processes, the ability to remove non-process elements from water streams becomes more critical. Dissolved species such as calcium, magnesium and transition metals such as manganese, iron and anions such as oxalates can build up in process waters and lead to scale formation and catalytic decomposition of bleaching agents. Ion exchange and precipitation using sequestering agents are currently used as technologies to help with this problem. We are developing a new class of photoactive ion exchange resins that can be regenerated with less energy and solvents than conventional resins and will be effective for recycling, water reduction and pollution prevention. As a proof of concept, we have synthesized several photoactive dyes based on spiropyran and tested for its metal binding ability. These dyes have also been anchored onto solid support and its metal and anion binding ability were studied. Initial results were encouraging and could lead to product development in future.

Original languageAmerican English
Number of pages2
StatePublished - 1998
EventProceedings of the 1998 TAPPI International Environmental Conference & Exhibit. Part 1 (of 3) - Vancouver, Can
Duration: 5 Apr 19988 Apr 1998


ConferenceProceedings of the 1998 TAPPI International Environmental Conference & Exhibit. Part 1 (of 3)
CityVancouver, Can

NREL Publication Number

  • NREL/CP-570-26175


Dive into the research topics of 'Photoactive Ion Exchange Resins'. Together they form a unique fingerprint.

Cite this