CAJ | 학술논문

燃料乙醇作为石油替代产品之一,可缓解能源供应的压力.以甜高粱秸秆为原料,研究营养盐对发酵生产乙醇产量的影响.在单因素试验基础上,利用Box-Behnken中心组合设计响应面法对甜高梁茎秆汁液发酵添加营养盐(NH_4)_2SO_4、MgSO_4、KH_2PO_4、caCl_2对发酵生产乙醇的影响进行了研究.结果表明,在甜高粱茎秆汁液发酵过程中,通过响应面分析建立添加营养盐与发酵液酒精度之间的回归模型Y=9.92-0.13X_1+0.32 X_2-0.23 X_3+0.18 X_4-0.20X_1 X_2-0.35X_1 X_3-0.70X_1~2-0.66 X_2~2-0.77 X_3~2-0.76 X_4~2可用于生产预测,最适宜添加量(NH_4)_2SO_4为4.61 g/L,MgSO_4为1.64 g/L,KH_2PO_4为2.72 g/L,CaCl_2为2.82 g/L.在此条件下进行验证试验,重复3次,酒精度为9.9%.
연료을순작위석유체대산품지일,가완해능원공응적압력.이첨고량갈간위원료,연구영양염대발효생산을순산량적영향.재단인소시험기출상,이용Box-Behnken중심조합설계향응면법대첨고량경간즙액발효첨가영양염(NH_4)_2SO_4、MgSO_4、KH_2PO_4、caCl_2대발효생산을순적영향진행료연구.결과표명,재첨고량경간즙액발효과정중,통과향응면분석건립첨가영양염여발효액주정도지간적회귀모형Y=9.92-0.13X_1+0.32 X_2-0.23 X_3+0.18 X_4-0.20X_1 X_2-0.35X_1 X_3-0.70X_1~2-0.66 X_2~2-0.77 X_3~2-0.76 X_4~2가용우생산예측,최괄의첨가량(NH_4)_2SO_4위4.61 g/L,MgSO_4위1.64 g/L,KH_2PO_4위2.72 g/L,CaCl_2위2.82 g/L.재차조건하진행험증시험,중복3차,주정도위9.9%.
As one of petroleum substitutes,fuel ethanol will relieve the world energy stress.Using sweet sorghum straw as raw material of ethanol fermentation.the influence of adding nutrition salts on the fermentation was studied.Based on single factor experiments,Box-Behnken central composite design of response surface methodology was ap-plied to optimize the addition of nutrition salts including(NH_4)_2SO_4,MgSO_4,KH_2PO_4,and CaCl_2 for the ethanol fer-mentation process of sweet sorghum juice.Results:The applicability of the model equation Y=9.92-0.13X_1+0.32X_2-0.23X_3+0.18 X_4-0.20X_1X_2-0.35X_1X_3-0.70X_1~2-0.66X_2~2-0.77X_3~2-0.76X_4~2 for predicting the optimum response values is verified effectively by experimental data.The obtained optimum adding doses of these salts are(NH_4)_2SO_4 4.61 g/L,MgSO_4 1.64 g/L,KH2PO4 2.72 g/L,and CaCl_2 2.82g/L.The validate test shows the prod-uet alcohol content is 9.9%.