Consecutively Preparing D-Xylose, Organosolv Lignin, and Amorphous Ultrafine Silica from Rice Husk

Table 1

The main contents of the rice husk, residue 1, and residue 2.

Content (wt.%)	Semicellulose	Lignin	Cellulose	Silica	Others
Rice husk	18.20	24.52	35.86	18.85	2.57
Residue 1	2.42	30.23	40.61	25.48	1.26
Residue 2	—	4.44	56.09	38.91	0.57

“—” represents the content was undetected.