Evolution of low molecular weight organic compounds during ultrapure water production process: A pilot-scale study.

This study evaluated the evolution of low molecular weight organic compounds in ultrapure water (UPW) production using a pilot-scale UPW production system and an ultrafiltration-reverse osmosis (UF-RO) system. During UPW production, a dissolved organic carbon (DOC) removal efficiency of 99.4% was achieved with a feedwater DOC level of 1.

Mechanism for degradation of dichlorodiphenyltrichloroethane by mechano-chemical ball milling with Fe-Zn bimetal.

As a non-combustion technique for destruction of persistent organic pollutants, mechanochemical ball milling has attracted research attention worldwide due to high effectiveness, simplicity, and wide applicability. Previous studies have demonstrated that Fe-Zn bimetal outperformed other commonly used reagents such as CaO, Fe and FeO in mechanochemical destruction of industrial DDT. Mechanistic studies on mechanochemical destruction of persistent organic pollutants are rather limited and mechanisms may differ among reagents and chemicals.

Mechanochemical destruction of DDTs with Fe-Zn bimetal in a high-energy planetary ball mill.

Mechanochemical destruction has been proposed as a promising, non-combustion technology for the disposal of toxic, halogenated, organic pollutants. In the study presented, additives including Fe, Zn, Fe-Zn bimetal, CaO and FeO were tested for their effectiveness to remove DDTs by MC. The results showed that Fe-Zn bimetal was the most efficient additive, with 98% of DDTs removed after 4h.