检索结果-南通市图书馆

Reusable high performance of calcined mg/al hydrotalcite for the removal of Navy Blue and Yellow F3G dyes

Chinese Journal of Chemical Engineering 2021年第10期34卷 247-254页

作者： Sri Juari Santosa Dwi Puji Astuti Department of Chemistry Faculty of Mathematics and Natural SciencesUniversitas Gadjah MadaBulaksumurYogyakarta 55281Indonesia

Water pollution with dye chemicals from apparel industries is a serious problem in the *** most of dyes are potentially have toxic and carcinogenic effects on human,it is important to remove them before they are discharged to the *** many methods available for dyes removal in water,adsorption is the easiest and economically feasible that has no major obstacle for practical *** the present study,we tested calcined mg/al hydrotalcite(mg/al CHT)prepared by coprecipitation technique as an adsorbent for the removal of Navy Blue(NB)and Yellow F3G(YF3G)***/al CHT was characterized by using a Fourier transform infrared(FTIR)spectrometer,an X-ray diffractometer(XRD)and a scanning electron microscope(SEM).The results showed that mg/al CHT was highly effective as an adsorbent for the removal of NB and YF3G under mild-acidic condition(pH 4)with removal capacities(b)according to Langmuir isotherm model were 7.97×10^(–4) and 5.80×10^(–4)mol·g^(-1),*** study showed that the adsorption of NB and YF3D on mg/al CHT followed pseudosecond order with rate constant(k_(p2))11.57×10^(3) and 11.75×103 g·mol^(-1)·min-1,*** spent adsorbent can be easily regenerated by simply calcining it at 450℃ for 3 *** test on the mixture of NB and YF3G showed that the adsorption capacity of mg/al CHT was eightfold higher than that of mg/al HT and the value was maintained with repeated use.

关键词： Adsorption mg/al hydrotalcite Navy Blue Yellow F3G Wastewater treatment

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Activation of mg-al hydrotalcite Catalysts for Transestenfication of Rapeoil

Activation of Mg-Al Hydrotalcite Catalysts for Transestenfic...

引用

第三届全国化学工程与生物化工年会

作者： Honyan Zeng Yuqin Li Zhen Feng Bo Feng Feng Xie (Institute of Biotechnology, University of Xiangtan Xiangtan Hunan China 411105)

＜正＞mg-al hydrotalcites with different mg/al ratios were prepared and characterized by XRD, FTIR, TG/DTA and SEM. It is conformed by XRD that the materials have hydrotalcite structure. The hydrotalcite catalyst calcined at 500 ℃ with mg/al molar ratio of 3 exhibited the highest catalytic activity in the transesterification. In addition, a study for optimizing the transesterification reaction conditions such as molar ratio of the methanol to oil, the reaction temperature, the reaction time, the stirring speed and the amount of catalyst, was performed. The optimized parameters, 6:1 methanol/rapeoil molar ratio with 1.5% hydrotalcite basic catalyst （w/w of oil） reacted under stirring speed 300 rpm at 65℃ for 4 h, gave a maximum ester conversion of 90.5%. Moreover, the solid catalyst could be reused, but a decrease in catalytic activity was observed.

关键词： Rapeoil Transesterification Biodiesel mg/al hydrotalcite Methyl ester Rapeoil

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：