| 纳米TiO_2对造纸白水中DCS的除去与作用机理研究 |
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| 引用本文： | 陈小泉,沈文浩,刘焕彬,寇顺利.纳米TiO_2对造纸白水中DCS的除去与作用机理研究[J].造纸科学与技术,2009,28(6):107-109,120. |
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| 作者姓名： | 陈小泉 沈文浩 刘焕彬 寇顺利 |
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| 作者单位： | 华南理工大学制浆造纸工程国家重点实验室,广东,广州,510640 |
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| 基金项目： | 广东省循环经济型钛产业共生代谢及其关键技术示范工程项目 |
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| 摘 要： | 造纸白水封闭循环是解决纸厂节约用水的有效途径之一，除去与控制白水中DCS是其关键技术。实验室模拟循环抄纸过程，应用常规助留助滤剂与纳米TiO2胶体及其二元复配助留助滤剂体系，测定白水中COD值，以其表征DCS浓度随着抄纸循环次数增加的变化规律，研究结果表明：当不使用或使用常规助留助滤剂时，白水中的DCS浓度随循环次数增加而增大；但当使用纳米TiO2胶体或其相应二元复合体系作为助留助滤剂时，白水中的DCS在初始阶段增加，随即达到稳定值。这一研究结果说明纳米TiO2胶体具有除去与控制白水中DCS的功能。纳米TiO2胶体对DCS溶液自动滴定作用机理研究显示，这一功能是通过吸附絮凝起作用的，絮凝过程并非电荷中和引起。
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| 关 键 词： | 纳米TiO2胶体 DCS 白水封闭循环 机理 |
Study on Removal Mechanism and Effect of DCS in Papermaking White Water with Dual-Component System Retention Aids Containing Nanosized TiO_2 Colloid |
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| Chen Xiaoquan,Shen Wenhao,Liu Huanbin,Kou Shunli.Study on Removal Mechanism and Effect of DCS in Papermaking White Water with Dual-Component System Retention Aids Containing Nanosized TiO_2 Colloid[J].Paper Science & Technology,2009,28(6):107-109,120. |
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| Authors: | Chen Xiaoquan Shen Wenhao Liu Huanbin Kou Shunli |
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| Affiliation: | Chen Xiaoquan Shen Wenhao Liu Huanbin Kou Shunli (Key State Laboratory of Pulp and Paper Engineering,South China University of Technology Guangzhou 510640,Guangdong,China) |
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| Abstract: | The removal and control way of DCS in the papermaking whitewater is a key technique for whitewater closure,which is used for reducing water comsuption in process.A dual-component system retention aid containing nanosized TiO2 for removal of dissolved and colloidal substances(DCS) from deinked pulp(DIP) was investigated by simulated recycling whitewater in the laboratory.When either Nano-TiO2/AmS or Nano-TiO2/APAM was used in the repeated handsheet-making process,the COD value of whitewater first increased a... |
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| Keywords: | DCS |
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