【摘要】 考察了Na2S2O8-Fe2+对田菁胶的氧化降解行为,系统研究了Na2S2O8和Fe2+用量、温度、降解时间和pH值对田菁胶粘度的影响。结果表明,Na2S2O8和Fe2+合适的体积比为3?1。在较低的温度(40℃)和较短的时间(20 min)内Na2S2O8-Fe2+就能使田菁胶粘度下降90%以上。另外,Na2S2O8-Fe2+氧化还原体系在酸性和中性条件下对田菁胶的降解都有良好的降解性能,考虑到在实际生产中的应用,我们认为中性条件下最合适。更多还原

【Abstract】 The oxidative degradation of sesbania gum by Na₂S₂O₈-Fe²⁺ was studied in the article.The effect of amount of Na₂S₂O₈ and Fe²⁺,reaction temperature,reaction time and pH value on viscosity of sesbania gum was investigated.The result showed that the appropriate dosage ratio of Na₂S₂O₈ to Fe²⁺ was 3︰1.The decreasing ratio of viscosity reached 90% with low temperature and short reaction time.In addition,the high oxidative degradation property was obtained in acid or neutral environment in the presence of Na₂S₂O₈-Fe²⁺.The neutral environment was the best condition by considering the practical production.更多还原