Preparation of strongly acidic cation-exchange resins from gymnosperm acid hydrolysis lignin

2000 ◽  
Vol 46 (6) ◽  
pp. 477-479 ◽  
Author(s):  
Seiichi Yasuda ◽  
Kyoko Asano
Keyword(s):  
Cation Exchange ◽  
Acid Hydrolysis ◽  
Hydrolysis Lignin ◽  
Cation Exchange Resins ◽  
Acid Hydrolysis Lignin ◽  
Exchange Resins

Study on the Alkoxylation of Dihydromyrcene over Cation Exchange Resins

2019 ◽  
Vol 58 (27) ◽  
pp. 11871-11877 ◽  
Author(s):  
Si Chen ◽  
Su Wang ◽  
Zheng Zhou ◽  
Gaodong Yang ◽  
Zhibing Zhang
Keyword(s):  
Cation Exchange ◽  
Cation Exchange Resins ◽  
Exchange Resins

Factor analysis of trends in selectivity in gas-solid chromatography on cation-exchange resins

1980 ◽  
Vol 52 (4) ◽  
pp. 723-728 ◽  
Author(s):  
Roland F. Hirsch ◽  
Robert J. Gaydosh ◽  
Jacques R. Chretien
Keyword(s):  
Factor Analysis ◽  
Cation Exchange ◽  
Cation Exchange Resins ◽  
Exchange Resins

Gas-solid chromatography on cation-exchange resins

1981 ◽  
Vol 207 (1) ◽  
pp. 115-130 ◽  
Author(s):  
Jacques R. Chrétien ◽  
Jacques-Emile Dubois ◽  
Roland F. Hirsch ◽  
Robert J. Gaydosh
Keyword(s):  
Cation Exchange ◽  
Cation Exchange Resins ◽  
Exchange Resins

scholarly journals Leachables from Strong Acid Cation Exchange Resins

1988 ◽  
Vol 37 (12) ◽  
pp. 1114-1121 ◽  
Author(s):  
Wataru AGUI ◽  
Masahito TAKEUCHI ◽  
Masahiko ABE ◽  
Keizo OGINO
Keyword(s):  
Cation Exchange ◽  
Strong Acid ◽  
Cation Exchange Resins ◽  
Acid Cation ◽  
Exchange Resins

Acid Hydrolysis Lignin as a Sorbent for Naphthalene

2001 ◽  
Vol 36 (4) ◽  
pp. 719-735 ◽  
Author(s):  
Angela Keane ◽  
Subhasis Ghoshal
Keyword(s):  
Organic Matter ◽  
Acid Hydrolysis ◽  
Waste Product ◽  
Freundlich Isotherm ◽  
Packed Bed ◽  
Hydrolysis Lignin ◽  
Sorptive Capacity ◽  
Sorption Data ◽  
Large Pressure ◽  
Acid Hydrolysis Lignin

Abstract Lignin, a major polymeric constituent of woody plant tissue, is an abundant source of natural organic matter available as a waste product from the pulp and paper and the fuel ethanol industries. In this study, the sorptive capacity of acid hydrolysis lignin for naphthalene, a representative nonpolar hydrophobic organic compound (HOC), was investigated. When powdered lignin is mixed with distilled water, dissolved and/or colloidal organic matter leaches into the aqueous phase imparting a cloudy yellowish colour. A washing and filtering protocol was developed for pretreating the lignin employed in the sorption studies. Results from batch sorption experiments showed that acid hydrolysis lignin has a strong affinity for naphthalene. The Freundlich isotherm coefficients obtained indicate that the sorption isotherm for naphthalene on hydrolysis lignin is nearly linear. A modified Freundlich equation was employed in order to compare sorption data for HOCs on lignin and activated carbon through the use of unit equivalent coefficients. The results presented in this research and in the literature suggest that the two sorbents are comparable in terms of sorption coefficients. It was determined that acid hydrolysis lignin is unsuitable for use in a packed bed since pumping a naphthalene solution through a column packed with lignin caused the wet lignin to become significantly hardened over time, resulting in a large pressure drop across the system.

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