**Appendix**

22 New Technologies in the Oil and Gas Industry

industry.

**4. Acronyms** 

AC - Alternate Current

DC - Direct Current

EC - Electrocoagulation EF - Electroflocculation

O&G - Oils and Greases

TOC - Total Organic Carbon TSS - Total Suspended Solids

**Acknowledgements** 

**Author details** 

BOD - Biochemical Oxygen Demand

COD - Chemical Oxygen Demand

Delectrode – Distance between electrodes


EPA - Environmental Protection Agency

ACE SeparatorTM - Alternating Current electrocoagulation

BTEX - Benzeno, Tolueno, Etil-Benzeno and Xilenos)

A - Ampere

DSA®

Hz - Hertz

V - Volt

pHi – initial pH

The biggest advantage of AC versus DC electroflocculation is the lower electrode wear with the former technique. When using the same testing conditions and time of 6 minutes for both technologies, the efficiency was above 30%. The AC electroflocculation technique seems to be a promising alternative in the treatment of oily wastewater from the oil

The National Councel of Technological and Scientific Development (CNPQ). When National Institute of Oil and Grease (INOG), we thank the Environmental Technology Laboratory (LABTAM) for the tests performed during this study, the Graduate Program in Environmental Protection (PPG-MA/UERJ) for support, and Rio de Janeiro State Research

Foundation (FAPERJ) for financing through a PhD scholarship.

*Programa de Pós-Graduação em Meio Ambiente (PPG-MA), Universidade do Estado do Rio de Janeiro (UERJ), Brazil* 

Alexandre Andrade Cerqueira and Monica Regina da Costa Marques *Instituto de Química – Laboratório de Tecnologia Ambiental (LABTAM),* 
