Hydroxypropyl sulfonated kraft lignin as a coagulant for cationic dye
In this paper, kraft lignin was reacted with 3-chloro-2-hydroxypropansulfonic acid sodium
(CHPS) to produce hydroxypropyl sulfonated lignin (SL). The effects of reaction conditions,
eg, the molar ratio of CHPS to lignin, the concentration of NaOH and the reaction
temperature and time, on the charge density of resultant SL were investigated. The
optimized conditions were found to be 80° C, 4 h reaction time, 0.05 M NaOH concentration
and 5/1 mol/mol of CHPS/lignin, which generated SL with the charge density and molecular …
(CHPS) to produce hydroxypropyl sulfonated lignin (SL). The effects of reaction conditions,
eg, the molar ratio of CHPS to lignin, the concentration of NaOH and the reaction
temperature and time, on the charge density of resultant SL were investigated. The
optimized conditions were found to be 80° C, 4 h reaction time, 0.05 M NaOH concentration
and 5/1 mol/mol of CHPS/lignin, which generated SL with the charge density and molecular …
Hydroxypropyl sulfonated kraft lignin as a coagulant for cationic dye.
GYZ Guo YanZhu, GWJ Gao WeiJue, P Fatehi - 2018 - cabidigitallibrary.org
In this paper, kraft lignin was reacted with 3-chloro-2-hydroxypropansulfonic acid sodium
(CHPS) to produce hydroxypropyl sulfonated lignin (SL). The effects of reaction conditions,
eg, the molar ratio of CHPS to lignin, the concentration of NaOH and the reaction
temperature and time, on the charge density of resultant SL were investigated. The
optimized conditions were found to be 80° C, 4 h reaction time, 0.05 M NaOH concentration
and 5/1 mol/mol of CHPS/lignin, which generated SL with the charge density and molecular …
(CHPS) to produce hydroxypropyl sulfonated lignin (SL). The effects of reaction conditions,
eg, the molar ratio of CHPS to lignin, the concentration of NaOH and the reaction
temperature and time, on the charge density of resultant SL were investigated. The
optimized conditions were found to be 80° C, 4 h reaction time, 0.05 M NaOH concentration
and 5/1 mol/mol of CHPS/lignin, which generated SL with the charge density and molecular …
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