Computational Thermodynamic Analysis of the Interaction between Coagulants and Monosaccharides as a Tool to Quantify the Fouling Potential Reduction in the Biofilm Membrane Bioreactor
| Autor: | Harsha Ratnaweera, Olga Kulesha |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
membrane fouling mitigation
lcsh:Hydraulic engineering multivariate statistics Geography Planning and Development 02 engineering and technology 010501 environmental sciences Aquatic Science Membrane bioreactor 01 natural sciences Biochemistry lcsh:Water supply for domestic and industrial purposes lcsh:TC1-978 Monosaccharide Process control 0105 earth and related environmental sciences Water Science and Technology chemistry.chemical_classification lcsh:TD201-500 Fouling mitigation Fouling Membrane fouling Biofilm biofilm membrane bioreactor 021001 nanoscience & nanotechnology computational thermodynamic analysis chemistry thermodynamic stability Chemical stability Biochemical engineering 0210 nano-technology complex |
| Zdroj: | Water Volume 11 Issue 6 Water, Vol 11, Iss 6, p 1275 (2019) |
| ISSN: | 2073-4441 |
| DOI: | 10.3390/w11061275 |
| Popis: | The membrane bioreactor (MBR) and the biofilm membrane bioreactor (BF-MBR) are among key solutions to water scarcity however, membrane fouling is the major bottleneck for any expansion of these technologies. Prepolymerized aluminum coagulants tend to exhibit the greatest extent of fouling alleviation, with the reduction of soluble microbial products (SMPs) being among the governing mechanisms, which, nevertheless, has been poorly understood. This current study demonstrates that the investigation of the chemical coordination of monosaccharides, which are the major foulants in MBR and BF-MBR, to the main hydrolysis species of the prepolymerized aluminum coagulant, is among the key approaches to the comprehension of the fouling mitigation mechanisms in BF-MBR. Quantum chemical and thermodynamic calculations, together with the multivariate chemometric analysis, allowed the team to determine the principal mechanisms of the SMPs removal, understand the thermodynamic patterns of fouling mitigation, develop the model for the prediction of the fouling mitigation based on the thermodynamic stability of the inorganic-organic complexes, and classify these complexes into thermodynamically stable and less stable species. The results of the study are practically significant for the development of plant surveillance and automated process control with regard to MBR and BF-MBR systems. |
| Databáze: | OpenAIRE |
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