Technical Abstract: Kenaf black liquor is cogenerated with paper pulp from various cooks. From alkaline cooks, about 43% of the weight of whole stalk kenaf goes into the black liquor. The resulting black liquor is generally burned for fuel value or chemical recovery. In order to more efficiently use the black liquor, especially in small plants where incineration equipment is expensive, a series of coagulants for black liquor was investigated. Only chitosan increased lignin precipitation above the amount precipitated by acidification to pH 3.0 alone. The remaining black liquor components were exchanged on an ion exchange resin to produce a high nitrogen content material, low in sodium with potential as a fertilizer.