Effects of high pressure and temperature conditions on the chemical fate of flowback water related chemicals DOI Creative Commons

Ann-Hélène Faber,

Andrea M. Brunner, M. T. W. Schimmel

et al.

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 888, P. 163888 - 163888

Published: May 8, 2023

Environmental risk assessment is generally based on atmospheric conditions for the modelling of chemical fate after entering environment. However, during hydraulic fracturing, chemicals may be released deep underground. This study therefore focuses effects high pressure and temperature in flowback water to determine whether current environmental models need adapted context downhole activities. Crushed shale were mixed exposed different (25–100 °C) (1–450 bar) investigate they have fate. Samples analysed using LC-HRMS non-target screening. The results show that both can impact fracturing related by increasing or decreasing concentrations via processes transformation, sorption, degradation and/or dissolution. Furthermore, degree direction change specific. lower equal a factor five, but few individual compounds exceed this five. suggests surface used an approximation under applying additional five account these uncertainties. More accurate insight into gained studying fluid known composition increased variability including concentration, salinity pH as variables.

Language: Английский

Identifying Candidate Persistent, Mobile, and Toxic (PMT) and Very Persistent and Very Mobile (vPvM) Substances in Shale Gas Drilling Fluids by Combining Nontarget Analysis and Machine Learning Model DOI
Ziwei Wang, Min Han, Biao Jin

et al.

Environmental Science & Technology Letters, Journal Year: 2024, Volume and Issue: 11(2), P. 114 - 121

Published: Jan. 22, 2024

Shale gas extraction has raised environmental concerns on regional water resources. Horizontal drilling is a process in which fluids containing complex organic and inorganic chemicals are intensively applied. Accidental spill improper disposal of related wastes might pose risks to surrounding groundwater environment. Given ground quality, persistent, mobile, toxic (PMT) very persistent mobile (vPvM) substances should be particular attention. However, recent research rarely focused chemical compositions fluids, the harmful PMT/vPvM remain unknown. In this study, we utilized nontarget screening strategy detect identify compounds collected southwest China. Specifically, total number 371 were detected main fraction was alicyclic compounds. Later, an original machine learning model developed by us applied candidate among Our study identified 29 substances, thus providing list prioritized for early warning risk assessment contamination.

Language: Английский

Citations

4
Combining eDNA and morphological approaches to reveal the impacts of long-term discharges of shale gas wastewaters on receiving waters DOI

Shangbo Zhou,

Zhiqiang Li,

Shuchan Peng

et al.

Water Research, Journal Year: 2022, Volume and Issue: 222, P. 118869 - 118869

Published: July 15, 2022

Language: Английский

Citations

16
Identifying and prioritizing organic toxicants in treated flowback and produced water from shale gas exploitation sites using an integrative effect-directed analysis and nontarget screening method DOI

Liwei He,

Fei Cheng, Fan Wu

et al.

Water Research, Journal Year: 2025, Volume and Issue: unknown, P. 123311 - 123311

Published: Feb. 1, 2025

Language: Английский

Citations

0
Effect of laser powers on the mechanical properties 27SiMn steel with Inconel 718 cladding coatings DOI Creative Commons
Linsen Shu, Zhao Heng, Peiyou Li

et al.

Materials Research Express, Journal Year: 2022, Volume and Issue: 9(9), P. 096511 - 096511

Published: Sept. 1, 2022

Abstract In order to know the influence of laser power on steel (27SiMn) used for repairing column with Inconel 718 powder materials, and obtain optimal parameters best mechanical properties cladding layer, microstructure, tensile fracture morphology alloy under three powers (1800 W, 2100 W 2400 W) were investigated by using single-factor variable method, keeping scanning speed, feeding amount spot diameter unchanged. The results show that increase coating prepared surface gradually decreased, when is 1800 W. yield strength at was 61.7% higher than substrate, its value 970 MPa. elongation reduced 50% compared 7%. microstructure 27SiMn (Ni, Fe, Cr) phase Ni 3 Fe phase, mainly composed uniform cellular crystals. This study provides a valuable reference additive manufacturing industrial materials laser-cladding coating.

Language: Английский

Citations

12
Identifying persistent, mobile and toxic (PMT) organic compounds detected in shale gas wastewater DOI Creative Commons
Chen Huang, Biao Jin, Min Han

et al.

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 858, P. 159821 - 159821

Published: Nov. 2, 2022

Shale gas exploitation is a water-intensive process, generating flowback and produced water (FPW) with complex chemical compositions. Reuse, disposal treatment of FPW are increasing concern, because the potential risk contamination to surrounding aquatic environment drinking sources when emitted. Among numerous organic substances present in FPW, particular concern those that persistent, mobile toxic (PMT) very persistent (vPvM). PMT vPvM have greatest spread groundwater hardest remediate. This study presents outcome literature review identify compounds were previously detected FPW. The 162 target identified from this assessed see if they can be considered PMT/vPvM based on their substance properties. Our results indicated most "not PMT", accounting for 108 (66.7 %) compouds. In total 22 or likely meet criteria more data available. Examples include anthracene, 1,4-dioxane 1,4-dichlorobenzene. should prioritized management measures monitoring order protect regional resources.

Language: Английский

Citations

11
Analysis of Potential Environmental Risks in the Hydraulic Fracturing Operation in the “La Luna” Formation in Colombia DOI Open Access
Camilo Andrés Guerrero-Martín, Alexandre Szklo

Sustainability, Journal Year: 2024, Volume and Issue: 16(5), P. 2063 - 2063

Published: March 1, 2024

This article presents an in-depth analysis of potential environmental risks associated with hydraulic fracturing operations within the “La Luna” formation in Colombia. Using Conesa methodology, it assesses impacts unconventional reservoir production Colombia, including water usage, chemical additives, air emissions, and for groundwater contamination. study incorporates comprehensive data on geological characteristics, operational procedures, conditions specific to region. highlights need a proactive approach managing The findings underscore importance implementing robust regulatory measures, monitoring systems, industry’s best practices mitigate prevent adverse impacts. research contributes ongoing global dialogue implications regions sensitive ecological conditions. reservoirs are widely recognized as general consensus; however, absence applied studies rigor explicit methodology Andean countries this addresses gap by proposing detailed structured assess reservoirs. Emphasizing knowing characteristics fluids, that critical information is only revealed drilling exploration wells PVT (pressure, volume, temperature) analysis. Obtaining crucial shaping mitigation thus allowing formulation management plan tailored precise contextualized closing knowledge promotes more sustainable exploitation geographical context. used proved its effectiveness accurately quantifying each alterations inherent process La Luna formation. results obtained allowed identification points most susceptible impacts, serving solid basis elaboration plan. strategic not enabled delineation measures but also facilitated selection appropriate locations implementation plan, maximizing corrective actions. It noteworthy successful application context evidences versatility applicability approach, consolidating valuable tool assessment effective planning industry.

Language: Английский

Citations

2
Biodegradation of Aromatic Compounds Under Hypersaline Conditions: Comparing Aerobic Biofilm Reactors with Conventional Activated Sludge DOI
Abdullah Ibrahim,

Yasawantha Hiripitiyage,

Edward Peltier

et al.

Environmental Engineering Science, Journal Year: 2023, Volume and Issue: 40(11), P. 514 - 523

Published: July 27, 2023

Biofilm formation can help to mitigate the stress placed on organisms during biological treatment of high-salinity wastewaters, such as “produced water” resulting from oil and gas extraction. This study investigated implementation two different biofilm-based reactors, activated carbon an adsorptive biofilm surface (Bio-GAC) aerobic granular sludge (AGS), a conventional (CAS) reactor for synthetic produced water (PW) under hypersaline conditions (85,000 mg/L NaCl). A mixture benzyl alcohol, o-cresol, phenol were used source with concentrations 100, 250 mg/L, respectively. The performance Bio-GAC was higher than AGS, overall removal efficiencies aromatic compounds 100% 93%. presence catechol in all three reactors reaction cycle confirmed that biodegradation occurring. CAS significantly lower terms efficiency (73%) resilience high salinity. Scanning electron microscopy showed biosystems establish stronger texture. Microbial community analysis biosystem type played crucial role selecting microbiome structure. These findings show be successfully biodegrade toxic organic contaminants environment, hybrid process is particularly promising treating PW.

Language: Английский

Citations

2
Effects of high pressure and temperature conditions on the chemical fate of flowback water related chemicals DOI Creative Commons

Ann-Hélène Faber,

Andrea M. Brunner, M. T. W. Schimmel

et al.

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 888, P. 163888 - 163888

Published: May 8, 2023

Environmental risk assessment is generally based on atmospheric conditions for the modelling of chemical fate after entering environment. However, during hydraulic fracturing, chemicals may be released deep underground. This study therefore focuses effects high pressure and temperature in flowback water to determine whether current environmental models need adapted context downhole activities. Crushed shale were mixed exposed different (25–100 °C) (1–450 bar) investigate they have fate. Samples analysed using LC-HRMS non-target screening. The results show that both can impact fracturing related by increasing or decreasing concentrations via processes transformation, sorption, degradation and/or dissolution. Furthermore, degree direction change specific. lower equal a factor five, but few individual compounds exceed this five. suggests surface used an approximation under applying additional five account these uncertainties. More accurate insight into gained studying fluid known composition increased variability including concentration, salinity pH as variables.

Language: Английский

Citations

0