Towards sustainable continuous production of azo dyes: possibilities and techno-economic analysis
| Title | Towards sustainable continuous production of azo dyes: possibilities and techno-economic analysis |
| Publication Type | Journal Article |
| Year of Publication | 2021 |
| Authors | Shukla, CA, Kute, MS, Kulkarni, AA |
| Journal | Green Chemistry |
| Volume | 23 |
| Issue | 17 |
| Pagination | 6614-6624 |
| Date Published | SEP |
| Type of Article | Article |
| ISSN | 1463-9262 |
| Abstract | A novel continuous process for synthesizing azo dyes using a bubble column reactor is reported. Continuous experiments were successfully performed for Sudan-I dye and Solvent Yellow 16 dye with a yield [and productivity] of 92.04 +/- 3.50% [1.68 +/- 0.13 kg day(-1)] and 96.60 +/- 2.18% [1.92 +/- 0.04 kg day(-1)], respectively. Experiments were performed at a higher slurry concentration similar to 5% (w/w) without any clogging. The results were extended for performing a detailed techno-economic analysis for 5 TPD Sudan-I azo dye production as a case study. The results indicate that the cost of the continuous process is almost 4.68 times lower than that of the corresponding batch process. Furthermore, the footprint for a continuous plant can be lowered by 2.4 to 4.5 times when compared to the batch process depending on different refilling strategies for feed storage tanks. A continuous process may require 39-42% less water than the industrial batch process. |
| DOI | 10.1039/d1gc01133b |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 10.182 |
Divison category:
Chemical Engineering & Process Development
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