文档介绍：湘潭大学
硕士学位论文
海泡石复合水处理剂的研制及其处理染料废水性能研究
姓名:谢治民
申请学位级别:硕士
专业:工程
指导教师:戴友芝
20070501
摘要
海泡石是一种富镁非金属粘土矿,其原矿比表面积达,有较好的吸附能力、
良好的耐腐蚀性、热稳定性、抗盐性等特性,本文旨在开发其在环境领域内强大
的应用潜力。
一方面,本文利用海泡石强大的阳离子交换能力,采用Fe3+和Al3+对海泡石原
矿进行改性,成功制得高效Fe-海泡石和高效Al-海泡石复合吸附剂,研究了最佳复
合条件以及复合吸附剂对活性艳兰模拟染料废水的吸附性能。结果表明,所研制
复合吸附剂能很好的去除目标污染物,吸附处理60min模拟废水脱色率达99%;吸
,与同条件下的活性炭及海泡石原矿相比,最高吸附容
量分别提高了3-4倍和9-10倍;复合吸附剂处理活性艳兰染料废水pH值、温度适用
范围广;能有效再生,再生重复利用12次以上保持良好的脱色能力。
另一方面,本文通过焦硫酸钾熔融法和钛酸丁酯溶胶法制得TiO2酸性溶胶,
然后通过浸渍、振荡等手段制得两种TiO2/海泡石复合光催化剂,并研究了复合光
催化剂对活性艳兰模拟染料废水的吸附和光催化性能。研究表明,复合材料的吸
附速率和吸附容量较之原矿粉都有很大提升;在光催化体系中,活性艳兰高的去
除率(>96%)并不是简单的吸附行为,而是发生了光催化降解被完全矿化而去除,
这都说明Ti已经成功嵌入到海泡石的层间结构中;pH值对于光催化降解的影响主
要表现在复合光催化剂对活性艳兰染料吸附行为的影响;H2O2的加入能普遍的提
升光催化降解的速率。实验结果还表明,通过焦硫酸钾熔融法制得TiO2酸性溶胶
能更好的嵌入海泡石层间结构,进而得到更高效率的TiO2/海泡石光催化剂。
关键词:海泡石;复合吸附剂,TiO2;复合光催化剂;吸附;光催化;染料废水
I
Abstract
Sepiolite is a kind of nonmetal clay, which has capacity of high adsorption,
causticity resistant, heating stability, salty resistant and so on. In this paper, we aimed
at developing it’s huge potential in environmental protection.
So, on the one hand, considering it’s strong capacity of cation exchange, we use
Fe3+ and Al3+ to alter sepiolite, and gain Fe, Al-posite adsorption with
high effectivity essfully. Then, the posing condition and posite
adsorption’s performance when disposing active blue was studied. It was found that
posite adsorption could remove the pollute at a high range, 99% of the
active-blue was adsorbed during one hour, the adsorption capacity could get
at a best level, which was 3-4 times more than active carbon and 9-10 times
more than the originally sepiolite, under the same condition. And it could remain a
high effectivity at a wide pH range and a wide range of temperature. And the
composite adsorption could be regenerated and recycle, afer 12 times recycling the
composite adsorption could retain high effectivity.
On the other hand, Th