Journal
MOLECULES
Volume 23, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/molecules23040868
Keywords
lignin; flocculants; dispersants; chemical reaction; product analysis; biorefining
Funding
- NSERC Canada
- Canada Research Chairs program
- Northern Ontario Heritage Fund Corporation program
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Currently, lignin is mainly produced in pulping processes, but it is considered as an under-utilized chemical since it is being mainly used as a fuel source. Lignin contains many hydroxyl groups that can participate in chemical reactions to produce value-added products. Flocculants, adsorbents, and dispersants have a wide range of applications in industry, but they are mainly oil-based chemicals and expensive. This paper reviews the pathways to produce water soluble lignin-based flocculants, adsorbents, and dispersants. It provides information on the recent progress in the possible use of these lignin-based flocculants, adsorbents, and dispersants. It also critically discusses the advantages and disadvantages of various approaches to produce such products. The challenges present in the production of lignin-based flocculants, adsorbents, and dispersants and possible scenarios to overcome these challenges for commercial use of these products in industry are discussed.
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