Novel water treatment processes
The effect of a natural, biodegradable surfactant obtained using a novel and efficient chemical reaction between cysteine (a thiol-based amino acid) and an octanoyl (C8) compound, was investigated for its application to the ion flotation removal of low levels of different contaminant ions from aqueous solution. The synthesised amino acid-based single-chain surfactant shows a high water solubility and exhibits extensive foaming in a typical flotation chamber over a wide pH range. In a batch ion flotation process, this surfactant was able to remove 97‒99% of the 5ppm of strontium, lanthanum, arsenic and different heavy metal ion levels present in contaminated water, in a simple, single-stage physiochemical process. Also, significant differences in ion binding selectivities could be used as the basis for the complete separation of some specific ions from mixed solutions, using the ion flotation process. Recycled water is an invaluable resource but it often also contains inorganic and organic nutrients, and chemical and biological substances, such as enteric microbial pathogens, which are often not monitored. This is a key inhibition to its reuse. The application of a novel CO2 bubble column sterilization process is presented here and compared with other commonly used processes.
Copyright (c) 2019 Mojtaba Taseidifar, Adrian G. Sanchis, Richard M. Pashley, Barry W. Ninham
This work is licensed under a Creative Commons Attribution 4.0 International License.
- Copyright on any open access article in Substantia published by FUP is retained by the author(s).
- Authors grant FUP a license to publish the article and identify itself as the original publisher.
- Authors also grant any third party the right to use the article freely as long as its integrity is maintained and its original authors, citation details and publisher are identified.
- The Creative Commons Attribution License 4.0 formalizes these and other terms and conditions of publishing articles.
- In accordance with our Open Data policy, the Creative Commons CC0 1.0 Public Domain Dedication waiver applies to all published data in Substantia open access articles.