کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6307522 | 1618833 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the role of humic acids' carboxyl groups in the binding of charged organic compounds
ترجمه فارسی عنوان
در نقش گروه های کربوکسیل اسیدهای هومیک در اتصال ترکیبات آلی شارژ شده
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کلمات کلیدی
واکنش پذیری، پلی الکترولیت ها، نفوذ، اسیدهای هومیک، هیدروژل،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
چکیده انگلیسی
Interactions of humic acids (HAs) with two cationic dyes (methylene blue and rhodamine 6G) were studied using a unique combination of diffusion and partitioning studies in HAs, containing hydrogels and batch sorption experiments. In order to investigate the involvement of carboxyl groups of HAs in these interactions, all experiments were performed for both, the original lignite HAs and HAs with selectively methylated carboxyls. The results of the diffusion experiments confirm that the interactions between the solute and humic substances have a strong impact on the rate of diffusion process. Surprisingly, the effect is almost equally approved for original and methylated HAs. On the other hand, the results of batch sorption experiments show strong improvement of the sorption capacity (methylated HAs), which is explained by changed morphology of alkylated HAs. The comparison of the results of diffusion and adsorption experiments shows that the diffusion experiments simulate the transport of solutes in natural humics containing environment more reasonably.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 138, November 2015, Pages 503-510
Journal: Chemosphere - Volume 138, November 2015, Pages 503-510
نویسندگان
JiÅà Smilek, Petr SedláÄek, Michal Kalina, Martina KluÄáková,