English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In the present study, the efficacy of L-ascorbic acid (LAA), sodium sulphite (Na 2 SO 3 ), sodium thiosulphate (Na 2 S 2 O 3 ), and a mixed iron catalyst (Fe 3+ /Fe 2+ ) to activate Fenton-like (H 2 O 2 /Fe 3+ ) system was studied and compared. Aqueous solution of a model emerging contaminant (Diuron, DCMU) was used to assess the treatment efficacy of Fenton (H 2 O 2 /Fe 2+ ) and activated/non-activated Fenton-like systems. The DCMU oxidation in Fenton and Fenton-like systems at a DCMU/H 2 O 2 /Fe m/m/m of 1/10/1 resulted in more than 99% (in 15 min) and 26% (in 2 h) target compound removal, respectively. The application of inorganic reducing agents (Na 2 SO 3  and Na 2 S 2 O 3 ) to activate the Fenton-like system proved ineffective with a negligible improvement in DCMU degradation as compared to the non-activated Fenton-like system. The application of organic reducing agent (LAA) to activate the Fenton-like system was more promising and demonstrated almost equal DCMU removal efficacy for both the Fenton system at a DCMU/H 2 O 2 /Fe 2+  m/m/m of 1/10/1 and LAAactivated Fenton-like system at a DCMU/H 2 O 2 /Fe 3+ /LAA m/m/m/m of 1/10/1/1. The DCMU degradation in H 2 O 2 /(Fe 3+ /Fe 2+ ) system was slower than in the Fenton system, but nevertheless, complete DCMU removal was observed after 2 h of oxidation at a DCMU/H 2 O 2 /Fe 2+ /Fe 3+  m/m/m/m of 1/10/0.2/0.8. The highest mineralisation was observed in the classical Fenton system followed by the mixed catalyst-activated Fenton-like process. The activation of Fenton-like system by mixed iron catalyst (Fe 3+ /Fe 2+ ) proved to be more feasible for the application in the water or wastewater treatment using un-regenerated ferric sludge catalysed Fenton process.

Application of Different Techniques for Activation of H 2 O 2 /Fe 3+ System: A Comparative Study