Furfural residues from straw become complex fertilizer by addition method  

作　　者：LIU Jun\|feng,YI Ping\|gui,CHEN An\|guo (Department of Chemical Engineering, Xiangtan Polytechnic University, Xiangtan 411201, China) 

出　　处：《Journal of Environmental Sciences》2000年第2期74-77,共4页环境科学学报（英文版）

摘　　要：The additives such as phosphoric acid, calcium phosphate, calcium super phosphate, calcium over super phosphate, calcium carbonate, sodium hydrosulphite, etc. were used to produce furfural from the straw by hydrolysis with sulfuric acid. The effect of amount of the additives, the content of the added substance and the conditions of distillation on the acidity of the residues were studied. The experiment results showed that the all residues became neutral complex fertilizer, and the productivity of furfural increases under the following conditions: sulfuric acid concentration is 20% (by weight), the ratio of liquid to solid is 3∶1—4∶1 (by weight), the ratio of the additives to straw is suitable.The additives such as phosphoric acid, calcium phosphate, calcium super phosphate, calcium over super phosphate, calcium carbonate, sodium hydrosulphite, etc. were used to produce furfural from the straw by hydrolysis with sulfuric acid. The effect of amount of the additives, the content of the added substance and the conditions of distillation on the acidity of the residues were studied. The experiment results showed that the all residues became neutral complex fertilizer, and the productivity of furfural increases under the following conditions: sulfuric acid concentration is 20% (by weight), the ratio of liquid to solid is 3∶1—4∶1 (by weight), the ratio of the additives to straw is suitable.

关 键 词：STRAW FURFURAL residues complex fertilizer  CLC number: X712    Document code: A 

分 类 号：X712[环境科学与工程—环境工程]