Development of New Pulping Process for Agricultural Wastes and Annual Plants to Use Waste Liquor as Fertilizer

稻草很容易被氨改性，因为壁面聚合物是由羟基肉桂酸通过乙醚和酯桥连接起来的。在此基础上，选择NH3水溶液作为制浆液，开发了稻草制浆新体系。传统烧碱法制浆废液中含有大量来源于草料中二氧化硅的NaSiO_2以及木质素、碳水化合物和氢氧化钠。处理废液真的很难。新的制浆工艺采用NH3，废液中含有NH3、木质素和碳水化合物。当少量的KOH与NH3作为制浆液配合使用时，废液应含有足够的钾，并具有足够的造纸性能。废液被用作玉米和水稻栽培的肥料。废液的使用大大促进了植物的生长。

Rice straw would be easily modified by ammonia because wall polymers are associated by hydroxycinnamic acids through ether and ester bridges. Then aqueous NH_3 solution was selected as pulping liquor to develop new pulping system of rice straw. Waste liquor from conventional pulping of grasses using NaOH contains significant amount of NaSiO_2 originated from silica in grasses together with lignin, carbohydrates and NaOH. It is really difficult to treat waste liquor. New pulping process uses NH_3, waste liquor contains NH_3 together with lignin and carbohydrates. When small amount of KOH were used together with NH_3 as pulping liquor to promote pulping, the waste liquor should contain potassium, and enough properties of pulp for paper making. The waste liquor was applied as a fertilizer for maize and rice cultivations. Growth of plants was considerably promoted by the application of the waste liquor.