TY - EJOUR
AU - Sharma, Ganesh
AU - Dwivedi, Kshitiz
AU - Bafana, Amit
AU - Pakade, Yogesh
AU - Biniwale, Rajesh
PY - 2023
DA - November
TI - Wet air oxidation of leachate containing emulsified and solubilized hydrocarbons from crude oil-contaminated soil
T2 - International Journal of Industrial Chemistry
VL - 10
L1 - https://oiccpress.com/international-journal-of-industrial-chemistry/article/wet-air-oxidation-of-leachate-containing-emulsified-and-solubilized-hydrocarbons-from-crude-oil-contaminated-soil/
DO - https://doi.org/10.1007/s40090-019-0187-2
N2 - The present research work is focussed on the treatment of leachate generated from crude oil-contaminated soil sites using wet air oxidation as an advanced oxidation process. The factors affecting the wet air oxidation (WAO) process, viz. temperature, pressure and time of treatment were optimized using central composite design and response surface methodology. The significant factors were optimized to maximize % COD removal from the leachate. The linear effects of pressure and temperature (p = 0.000); the square effects of pressure (p = 0.019) and time (p = 0.007) and the interaction effect of temperature–pressure (p = 0.002) were found to be significantly governing the % COD removal. The maximum COD removal of 76% was obtained at temperature = 244 °C, time = 30 min and pressure = 5 bar. Further, the biodegradability index (BOD5/COD) increased from 0.14 ± 0.007 of the untreated leachate to 0.48 ± 0.02 of the wetox-treated leachate. Moreover, the degradation of recalcitrant hydrocarbons in initial leachate by WAO treatment was confirmed using GC–MS analysis.
IS - 3
PB - OICC Press
KW - Contaminated soil, Crude oil, Leachate, Recalcitrant hydrocarbons, Wet air oxidation, Response surface methodology, Biodegradability index 
EN -