Method for recovering an acid from acid/sugar solutions
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United States of America Patent
Stats
-
Apr 17, 2018
Issued Date -
N/A
app pub date -
Apr 20, 2016
filing date -
Apr 21, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Acid hydrolysis of biomass is an important step for releasing the component sugars before converting them to fuels and/or biochemicals. During such a process, a significant amount of mineral acid, such as sulfuric acid, is used. In most cases, the residual acid is neutralized with lime before the sugar conversion step. By doing so, a waste calcium sulphate stream is generated and sent to disposal. The efficient separation of acid from the sugars would allow the recycle of the acid and make the entire process more economically viable. We found that a resin bed packed with an acid retardation resin can be used to achieve an efficient separation (i.e. 98.5% recovery of the acid) of the sulfuric acid from the sugars. The resin bed can be simply regenerated with water.
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International Classification(s)
- 2016 Application Filing Year
- C01B Class
- 1845 Applications Filed
- 1265 Patents Issued To-Date
- 68.57 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C01B Class
- 0 % this patent is cited more than
- 7 Age
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