Effects of adding bulking agent, inorganic nutrient and microbial inocula on biopile treatment for oil-field drilling waste

Chemosphere
Jie MaGuangxu Yan

Abstract

Contamination from oil-field drilling waste is a worldwide environmental problem. This study investigated the performance of four bench-scale biopiles in treating drilling waste: 1) direct biopile (DW), 2) biopile plus oil-degrading microbial consortium (DW + M), 3) biopile plus microbial consortium and bulking agents (saw dust) (DW + M + BA), 4) biopile plus microbial consortium, bulking agents, and inorganic nutrients (Urea and K2HPO4) (DW + M + BA + N). Ninety days of biopiling removed 41.0%, 44.0%, 55.7% and 87.4% of total petroleum hydrocarbon (TPH) in the pile "DW", "DW + M", "DW + M + BA", and "DW + M + BA + N" respectively. Addition of inorganic nutrient and bulking agents resulted in a 56.9% and 26.6% increase in TPH removal efficiency respectively. In contrast, inoculation of hydrocarbon-degrading microorganisms only slightly enhanced the contaminant removal (increased 7.3%). The biopile with stronger contaminant removal also had higher pile temperature and lower pile pH (e.g., in "DW + M + BA + N"). GC-MS analysis shows that biopiling significantly reduced the total number of detected contaminants and changed the chemical composition. Overall, this study shows that biopiling is an effective remediation technology for...Continue Reading

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Citations

Jan 19, 2019·Environmental Science and Pollution Research International·Zhong ChenYuanjian Xu
May 17, 2019·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Yun-Yeong LeeKyung-Suk Cho
May 20, 2020·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Guobin JiangJinyan Hu
Jun 23, 2020·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Mentore VaccariMartina Stolfini
Aug 30, 2019·Bioprocess and Biosystems Engineering·Ali Akbar BabaeiPooya Paydary
Feb 8, 2020·Journal of Environmental Health Science & Engineering·Mahdi FarzadkiaAli Koolivand
Apr 19, 2021·Journal of Hazardous Materials·Son A HoangNanthi S Bolan

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