Table 4 Different approaches for the modification of lignins by OA toward N-ALH
From: Latest development in the fabrication and use of lignin-derived humic acid
Raw materials | Chemicals/reagents | Temperature (℃), time (min) | C/N | Application remarks | Refs. |
|---|---|---|---|---|---|
KL, LS, OL | NH4OH, O2 | 150, 120 | 4–7 | Increased Sorghum productivity by 3 times | [60] |
OL | NH4OH, O2 | 130, 15–1455 | 3–5 | Increased 63% nitrogen incorporation | |
OL | NH4OH, O2 | 100, 15–180 | NA | Increased 67% nitrogen incorporation at pH 11 | [61] |