Delignification pretreatment is the main source of high cost and high pollution in biomass processing. This paper reports on a simple cheap geopolymers-based highly selective and efficient pretreatment process for delignification under low-temperature water-cooking without discharging black liquor. The geopolymer with a SiO/AlO ratio of 4.
View Article and Find Full Text PDFPurpose Of Review: Eustachian tube dilation is a controversial surgical procedure because the intended problem for which it is meant to address, obstructive Eustachian tube dysfunction, is a clinical diagnosis without a reliable diagnostic tool to test.In the past 10 years, balloon dilation Eustachian tuboplasty (BDET) has been the most commonly performed Eustachian tube dilation procedure. The present review seeks to identify the patients who may benefit from this procedure and thus propose the indications.
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