Effect of Persulphate Pretreatment on the Formation of Chlorinated Phenolic Compounds

  • Divya Prakash Prakash Indian Institute of Technology Roorkee,
  • Rachna Malhotra Indian Institute of Technology Roorkee
  • Satish Kumar Indian Institute of Technology Roorkee
DOI: https://doi.org/10.53555/mce.v1i3.534
Keywords: Chlorophenolics, persulphate, prebleaching, wheat straw, bleaching effluent

Abstract

Estimation of different chlorophenolic compounds formed during CEH bleaching of oxygen and persulphate-peroxide pretreated wheat straw soda pulp has been carried out. The results have been compared with CEH bleaching without any pretreatment. The results show that CEH effluent is toxic in nature as it contains many chlorophenolic compounds with concentration exceeding the 96LC50 values. Results indicate that chlorocatechols are predominant in CEH, cholorosyringaldehydes in (PxP)CEH and chlorophenols in OCEH bleaching effluents. The results further indicate that persulphate-peroxide pretreatment reduces the amount of chlorinated phenolics formed by 36% to 109.9g/t and the number of identified chlorophenolics to 24 from 26 in CEH. Oxygen pretreatment reduces the amount of chlorinated phenolics by 86% to 22.8 g/t and the number of chlorophenolics to 14 thereby reducing the toxicity of the effluent.

Downloads

Download data is not yet available.
Published
2015-03-31
How to Cite
Prakash, D. P., Malhotra, R., & Kumar, S. (2015). Effect of Persulphate Pretreatment on the Formation of Chlorinated Phenolic Compounds. IJRDO - Journal of Mechanical And Civil Engineering, 1(3), 15-20. https://doi.org/10.53555/mce.v1i3.534
Issue
Vol. 1 No. 3 (2015): IJRDO - Journal of Mechanical and Civil Engineering
Section
Articles

Author(s) and co-author(s) jointly and severally represent and warrant that the Article is original with the author(s) and does not infringe any copyright or violate any other right of any third parties, and that the Article has not been published elsewhere. Author(s) agree to the terms that the IJRDO Journal will have the full right to remove the published article on any misconduct found in the published article.