Plant-derived flocculant, flocculant mixture, method of flocculation, and method for preparing plant-derived flocculant
US9611157B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 6, 2012 |
| Grant date | Apr 4, 2017 |
| Priority date | — |
| Expiry date | Aug 7, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/37
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Disclosed are a plant-derived flocculant and a flocculant mixture having a higher flocculation capacity. The plant-derived flocculant comprises at least one of a dried matter of Corchorus olitorius, a dried matter of Begonia fimbristipula, a dried matter of bananas, and a dried matter of Corchorus capsularis; the plant-derived flocculant has a colloid equivalent of −1.5 mEq/g to −0.20 mEq/g, and the 2 weight % aqueous solution of the plant-derived flocculant has a viscosity of at least 6.0×10−3 Pa·s (6.0 cP). The flocculant mixture of the invention comprises the plant-derived flocculant described above and a synthetic polymer flocculant having a colloid equivalent of −4.5 mEq/g to −1.2 mEq/g, whose 0.2 weight % aqueous solution has a viscosity of 1.3×10−1Pa·s to 4×10−1 Pa·s (130 cP to 400 cP).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.