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دانلود رایکان مقاله انگلیسی ISI با موضوع ارزیابی کیتوزان، یک بیوپلیمر اصلاح شده برای انعقاد ذرات کلوئیدی

عنوان فارسی مقاله:

ارزیابی کیتوزان، یک بیوپلیمر اصلاح شده برای انعقاد ذرات کلوئیدی

عنوان انگلیسی مقاله:

Evaluation of a modified chitosan biopolymer for coagulation of colloidal particles

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بخشی از مقاله انگلیسی :

4. Conclusions

Coagulation of chitosan and PACl on synthetic turbid waters showed that the optimal dosage of chitosan was less, and the size of the flocs was larger, with a faster settling rate. When chitosan and PACl are mixed in a mass ratio of 4:1, the settling rate of the resulting floc is the highest when compared to pure chitosan and PACl. At C/P=1:1, the coagulation effectiveness is between those of chitosan and PACl. Less coagulant was required for more acidic water, although smaller flocs were produced. Increasing the speed during rapid mixing can reduce the amount of optimum dosage. The coagulation of bentonite, kaolinite and clay shows that the property of the colloid particle is important in chitosan coagulation. Results of coagulation on natural water suggest that partially replacing PACl with chitosan in the water treatment process can be cost effective.