机构地区: 华南理工大学轻工与食品学院制浆造纸工程国家重点实验室
出 处: 《造纸科学与技术》 2010年第3期93-96,共4页
摘 要: 探讨了非过程铁元素在纤维素纤维中的富集行为规律。研究发现:大部分外加的铁元素易被洗涤洗去;中性条件下,陈化铁在纤维中的富集量远高于新制铁,外加量大于3000mg/Kg时,新制铁在纤维中的富集量接近饱和,达760mg/Kg,而陈化铁富集没有达到饱和;在0.5%~2%外加氢氧化钠范围内,陈化铁的富集量变化不大,但高于中性条件;另外,螯合剂DTPA对吸附态陈化铁的去除效果明显。 Accumulation of non-process Fe( III ) , fresh Fe( III) and aged Fe( III) on cellulose fiber was studied: most of accumulation of Fe( In ) into the pulp can be washed out easily. At neutral condition, the accumulation of aged Fe( III ) is more than that of fresh Fe( III ) ,when the addition quantity is more than 3000 mg/Kg, the accumulation of aged Fe( III ) can get to maxium(760mg/Kg), but fresh Fe( III ) cant; When the amount of sodium hydroxide was 0.5% - 2% , the accumulation of aged Fe( III ) changed little, but was significantly higher than that under neutral condition; In addition, DTPA can well remove adsorbed aged Fe ( III ) from cellulose fiber.
领 域: [环境科学与工程]