Abstract
This paper presents the permeate water quality and economy of reuse by nanofiltration membranes in reactive dyeing. Actual remazol dye bath wastewater, which contains high concentrations of NaCl at the level of 80 g/l, was studied during experiments. Experimental results showed that permeate samples were colorless and remained enough NaCl to be reused in reactive dye bath preparation again. Neutralization by HCl decreased the permeate flux and also increased the NaCl recovery. Permeate flux value was about 10 l/m2 h and Cl- rejection was achieved at the level of 10%. In addition, economical analyses were done based on experimental results and the payback period of the reuse system was calculated as less than 2 years.
| Original language | English |
|---|---|
| Pages (from-to) | 77-85 |
| Number of pages | 9 |
| Journal | Separation and Purification Technology |
| Volume | 36 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Apr 2004 |
Funding
This research was carried out under funding from Istanbul Technical University for project no: 1451. The author would like to thank the Pizza Textile Company for their supplying wastewater samples.
| Funders | Funder number |
|---|---|
| Istanbul Teknik Üniversitesi | 1451 |
Keywords
- Color rejection
- Cost analyses
- Dye bath wastewater
- Membrane fouling
- Nanofiltration
- Salt rejection
