TY - JOUR
T1 - Characteristics and treatment of wastewater from the mercaptan oxidation process
T2 - A comprehensive review
AU - Pino-Cortés, Ernesto
AU - Montalvo, Silvio
AU - Huiliñir, César
AU - Cubillos, Francisco
AU - Gacitúa, Juan
N1 - Publisher Copyright:
© 2020 by the authors.
PY - 2020/4/1
Y1 - 2020/4/1
N2 - Sulfur compounds are removed from petroleum by the addition of sodium hydroxide at a very high concentration. As a result, a residue called spent soda or spent caustic is generated, being extremely aggressive to the environment. In this work, the chemical properties of this residue are described in detail. The sodium hydroxide remains that have not reacted, sulfur compounds, and organic matter are the primary pollutants reported. Additionally, the main characteristics of the methods of treatment used to reduce them are described. This review comes from comprehensive and updated research and bibliographic analysis about the investigation on the topic. The advantages and disadvantages of the different treatment methods are highlighted. We established some criteria to set out when assessing the application of each one of these treatments is considered.
AB - Sulfur compounds are removed from petroleum by the addition of sodium hydroxide at a very high concentration. As a result, a residue called spent soda or spent caustic is generated, being extremely aggressive to the environment. In this work, the chemical properties of this residue are described in detail. The sodium hydroxide remains that have not reacted, sulfur compounds, and organic matter are the primary pollutants reported. Additionally, the main characteristics of the methods of treatment used to reduce them are described. This review comes from comprehensive and updated research and bibliographic analysis about the investigation on the topic. The advantages and disadvantages of the different treatment methods are highlighted. We established some criteria to set out when assessing the application of each one of these treatments is considered.
KW - Biological processes
KW - Electrochemical processes
KW - Oxidation processes
KW - Petroleum
KW - Phenols
KW - Sulfides
UR - http://www.scopus.com/inward/record.url?scp=85087053590&partnerID=8YFLogxK
U2 - 10.3390/PR8040425
DO - 10.3390/PR8040425
M3 - Review article
AN - SCOPUS:85087053590
SN - 2227-9717
VL - 8
JO - Processes
JF - Processes
IS - 4
M1 - 425
ER -