Nanoparticles in wastewater from a science-based industrial park-Coagulation using polyaluminum chloride
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
Author(s)
Detail(s)
| Original language | English |
|---|---|
| Pages (from-to) | 1009-1014 |
| Journal / Publication | Journal of Environmental Management |
| Volume | 85 |
| Issue number | 4 |
| Publication status | Published - Dec 2007 |
| Externally published | Yes |
Link(s)
Abstract
The Hsinchu Science-based Industrial Park (HSIP) is the hi-tech manufacturing hub of Taiwan. Wastewater from the HSIP contains numerous nano-sized silicate particles whose size distributions peak at 2 and 90 nm. A 3-5 mg l-1 as Al dose of polyaluminum chloride (PACl) was used in the field to coagulate these particles, but the removal efficiency was low. Laboratory scale tests indicated that although PACl coagulation removed 52% of the turbidity and 48% of the chemical oxygen demand (COD) from water, its effect on nano-particle removal was minimal. About 58% of the soluble COD was associated with colloidal Si particles. A light scattering test and transmission electron microscopy (TEM) demonstrated that the nano-particles agglomerated in approximately linear aggregates of sizes 100-300 nm. Prolonged contact between residual PACl and the nano-particles generated large aggregates with sizes of up to 10 μm and a fractal dimension of 2.24-2.63. The results presented herein should be of interest in the processing of "high-tech" wastewater that contains nanosized silica particles. © 2006 Elsevier Ltd. All rights reserved.
Research Area(s)
- Coagulation, Fractal dimension, Nano-particles, Removal
Bibliographic Note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.
Citation Format(s)
Nanoparticles in wastewater from a science-based industrial park-Coagulation using polyaluminum chloride. / Chang, M. R.; Lee, D. J.; Lai, J. Y.
In: Journal of Environmental Management, Vol. 85, No. 4, 12.2007, p. 1009-1014.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
