| Автор | peters*, Robert W. |
| Автор | Ku, Young |
| Дата выпуска | 1988 |
| dc.description | ABSTRACTIndustrial vastevaters generated in the electroplating and metal finishing industries typically contain toxic heavy metals. Depending on their origin, these wastewaters may also contain chelating agents, such as EDTA, NTA, citrate, tartrate, and gluconic acid. Although the major effect of complexation is an increase in the solubility of complexed metal ions, significant changes in the precipitation kinetics and particle size distribution may also contribute to the observed precipitation behavior.This paper addresses the effect of a weak complexing agent, tartrate, on the removal of zinc and cadmium using both hydroxide and sulfide treatment. Results are presented on the removal of heavy metals from synthetic plating wastewaters. Poor zinc removals were observed in the presence of tartrate, particularly when larger filter pore sizes were employed. The results suggest that tartrate severely hinders both zinc hydroxide and zinc sulfide precipitation, resulting in the formation of very fine precipitates; this was confirmed when no zinc removal occurred even with a settling time of 30 min. For removal of cadmium, virtually no change in residual cadmium concentration was observed in the presence of tartrate (compared to the case of no complexing agents present) due to the formation of low-stability complexes. |
| Формат | application.pdf |
| Издатель | Taylor & Francis Group |
| Копирайт | Copyright Taylor and Francis Group, LLC |
| Название | THE EFFECT OF TARTRATE, A WEAK COMPLEXING AGENT, ON THE REMOVAL OF HEAVY METALS BY SULFIDE AND HYDROXIDE PRECIPITATION |
| Тип | research-article |
| DOI | 10.1080/02726358808906515 |
| Electronic ISSN | 1548-0046 |
| Print ISSN | 0272-6351 |
| Журнал | Particulate Science and Technology |
| Том | 6 |
| Первая страница | 421 |
| Последняя страница | 439 |
| Аффилиация | peters*, Robert W.; Environmental Engineering Department, School of Civil Engineering, Purdue University |
| Аффилиация | Ku, Young; Environmental Engineering Department, School of Civil Engineering, Purdue University |
| Выпуск | 4 |
