Effects of La(NO_3)_3 Treatment on Photocattalytic Activity of TiO_2 Films Prepared by Micro-Arc Oxidation

Effects of La(NO_3)_3 Treatment on Photocattalytic Activity of TiO_2 Films Prepared by Micro-Arc Oxidation     

亚硫酸盐浆CEH漂白废水的特性及其光催化氧化处理

本文对蔗渣、竹子、芒杆混合亚硫酸盐浆ＣＥＨ 漂白废水的特性进行了较详细的分析研究。研究表明,该废水ＢＯＤ５／ＣＯＤ为０ ．１８３ ,Ｃｌ－ 含量高达１１５２ ．５ｍｇ／ｌ,不适合于传统的生物氧化法处理。废水中的大分子有机污染物是废水色度的主要来源,废水的色度和ｐＨ 值密切相关。采用ＵＶ／ＴｉＯ２ 光催化氧化工艺处理该废水的初步研究结果表明,在充分供氧的条件下,可使废水快速脱色,同时废水的ＣＯＤ指标大大下降。     

加压溶氧光催化反应器中降解活性艳红X-3B的研究

首次探讨加压溶氧条件下pH值、TiO2投加量及温度等对活性艳红X-3B的降解和脱色的影响,结果表明,加压条件与常压条件下变化趋势基本一致,加压充氧相比加压充N2更有助于活性艳红X-3B的降解与脱色,其中,加压使溶液中溶解氧增加是导致活性艳红X-3B的降解与脱色的主要原因。COD的降解与色度的褪除成正相关,脱色率越高COD的降解率越高。     

TiO2-SiO2介孔复合材料的合成及其在造纸上的应用

介孔材料作为一种新型的纳米结构材料,近年来已经成为跨学科的国际研究热点之一,综述了近几年介孔TiO2-SiO2复合材料的合成、表征及在造纸上的潜在应用.     

RuO2/La2O3/TiO2复合光催化剂对直接红棕M的降解研究

采用溶胶—凝胶—浸渍法制备RuO2/La2O3/TiO2纳米粉体.以汞灯为光源,直接红棕M溶液的光催化降解为模型反应.结果表明:掺杂质量百分比为1.39%的La2O3,0.12%的RuO2,煅烧温度500℃时,RuO2/La2O3/TiO2的催化活性最高;当通气量为100mL/min,催化剂投加量为3.00g/L,初始pH值为8.98时,该催化剂对直接红棕M的降解率可达100%.     

Advances in Wine Aging Technologies for Enhancing Wine Quality and Accelerating Wine Aging Process

Wine aging is an important process to produce high-quality wines. Traditionally, wines are aged in oak barrel aging systems. However, due to the disadvantages of the traditional aging technology, such as lengthy time needed, high cost, etc., innovative aging technologies have been developed. These technologies involve aging wines using wood fragments, application of micro-oxygenation, aging on lees, or application of some physical methods. Moreover, wine bottling can be regarded as the second phase of wine aging and is essential for most wines. Each technology can benefit the aging process from different aspects. Traditional oak barrel aging technology is the oldest and widely accepted technology. The application of wood fragments and physical methods are promising in accelerating aging process artificially, while application of micro-oxygenation and lees is reliable to improve wine quality. This paper reviews recent developments of the wine aging technologies. The impacts of operational parameters of each technology on wine quality during aging are analyzed, and comparisons among these aging technologies are made. In addition, several strategies to produce high-quality wines in a short aging period are also proposed.     

非织造布负载TiO_2/ACF净化室内甲醛的研究

采用正交实验分析法研究了负载TiO2/ACF的非织造布净化甲醛的性能,选择TiO2量、ACF量和光照强度三个因素、三个水平进行相关实验。结果表明,低水平TiO2/ACF负载量净化高浓度甲醛时,ACF量为最大影响因素,光照强度和TiO2量的影响次之;A3B3C2(ACF 3.6 g/m2,TiO22.6 g/m2,光照强度20μW/cm2)为最佳方案,其净化率达79.2%,净化效力为50.9μg/g。     

Ni2+-Co2+共掺杂TiO2光催化降解制浆黑液的研究

通过sol-gel法制备掺杂Ni2 、Co2 和Ni2 -Co2 共掺杂的纳米TiO2,利用X-射线衍射(XRD)、透射电子显微镜(TEM)和紫外-可见光谱(UV-Vis)对样品进行表征.结果表明:400℃时,粒子平均粒径为10nm左右,Ni2 、Co2 离子共掺杂抑制纳米TiO.晶粒的成长,使TiO2的光谱响应范围向可见光拓展.在紫外光照射下,Ni2 、Co2 离子共掺杂的TiO2能有效提高光催化降解制浆蒸煮黑液的效果,反应8h,体系中的CODCr可由反应前的480mg/I降至192mg/l,色度去除率可达到88.7%.