Colour removal from textile effluents using hardwood sawdust as an absorbent
Colour removal from textile effluents using hardwood sawdust as an absorbent
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DOI：
10.1002/jctb.5040350106
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发表时间：
2007-05
期刊：
影响因子：
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通讯作者：
H. Asfour;M. Nassar;O. Fadali;M. S. El-Geundi
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文献类型：
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作者：
H. Asfour;M. Nassar;O. Fadali;M. S. El-Geundi
用硬木锯屑作吸附剂对碱性染料稀溶液进行脱色。在80°C下，在200 mg dm−3的初始浓度（Co）下，在100 min内发生85%的脱色。当温度从25 ° C升高到80°C时，接触时间减少了44%。不同初始染料浓度的速率参数符合方程kco= 4.20Co ~（0.88），不同平均粒径的速率参数符合方程kdm=4.1（l/dm）~（0.135）。该过程的活化能为9.83 kJ mol−1，表明速率控制步骤是粒子内扩散。
Decolourisation of a dilute solution of a basic dyestuff was carried out by using hardwood sawdust as adsorbent. At 80°C 85% decolourisation occurred within 100 min at an initial concentration (Co) of 200 mg dm−3. There was a 44% reduction in contact time when the temperature was raised from 25 to 80°C. The rate parameter for different initial dye concentrations was found to follow the equation: kco=4.20Co0.88 and the rate parameter for different mean diameter dm followed the equation kdm=4.1 (l/dm)0.135. The activation energy of the process was 9.83 kJ mol−1 which shows that the rate controlling step is intraparticle diffusion.