Yes, they are leaving it in the soil. Prove me wrong with data. It says nothing at all about extracting the waste benzene they created from the soil, neither in the linked article nor in the complete paper, which i did read. The paper specifically describes an in-situ process. If it were economically beneficial to extract benzene from contaminated soil for industrial use, we would already be doing that with the tens of thousands of existing benzene contaminated sites, not creating more of them.

> A much lower Lindane-soil ratio of 1 w%, where Lindane was extracted with the reaction solvent prior to the degradation, also afforded good yields for both benzene (76%) and dichloride (76%, Entry 4, Fig. 4D). This alternative pre-extraction protocol acts as a further proof-of-concept which might help the design of larger scale remediation processes in which undesired soil contamination with electrolyte and Mn catalyst can be prevented. Interestingly, the large-scale feasibility of an extraction approach has been demonstrated by the successful treatment of ca. 70,000 tons of HCH contaminated soils in the Netherlands in a full-scale soil washing plant, which achieved HCH removal efficiency of more than 99.7% (42).

Emphasis added

It's in the article:

> The reactor used by the researchers consists of an undivided electrolysis cell in which dimethyl sulfoxide (DMSO) is used as a solvent

They move the DDT from the soil to the solvent, which is the medium for electrolysis, not the soil itself.

> neither in the linked article nor in the complete paper, which i did read.

I'm having trouble finding the paper, can you link please?