Suche...
Generic filters
Filter by Themen
Abwasserbehandlung
Analytik & Hygiene
Digitalisierung
Energie
Engineering
Events
Industriewasser
Kosten & Tarife
Nachhaltigkeit & Umweltschutz
Netze
Politik
Recht & Regelwerk
Wasser & Abwasser
Wasseraufbereitung
Wassergewinnung
Wasserstress
Water Solutions
Filter by Kategorien
Advertorial
Branche
Events
Forschung & Entwicklung
Leute
News
People
Products & Solutions
Produkte & Verfahren
Publications
Publikationen
Sonstiges
Trade & Industry
Filter by Kategorien
Firmenverzeichnis
Geschützte Downloads
Mediadaten
Öffentliche Downloads
Filter by Veranstaltungsschlagworte
abwasser
ACHEMA
Automatisierung
FDBR
Hydrologie
kanalnetze
MSR
Talsperren
trinkwasser
wasseraufbereitung
wasserbau
Wassernetze
Wasserversorgung

Chemists discover range of environmental contaminants in fracking wastewater

Kategorie:
Thema:
Autor: Patricia Santos

Chemists discover range of environmental contaminants in fracking wastewater
Article by By Christine Billau, The University of Toledo

March 03, 2022 | As companies that drill for oil and natural gas using hydraulic fracturing consider recycling and reusing wastewater that surfaces from wells during the fracking process, chemists at The University of Toledo discovered that the new and unexplored waste contains many environmental contaminants including organic chemicals and metallic elements.

Research scientists at UToledo’s Dr. Nina McClelland Laboratory for Water Chemistry and Environmental Analysis in collaboration with the University of Texas Arlington achieved a comprehensive characterization of the chemical composition of produced water samples extracted in Texas, indicating the presence of toxic and carcinogenic contaminants in untreated samples, which can pose a threat to wildlife and human health.

Results can help adjusting guidelines on treatment and disposal of fracking wastewater

Unraveling the complex composition of produced water by specialized extraction methodologies, the results published in Environmental Science and Technology provide critical information that can help regulatory agencies fine-tune proposed guidelines related to the safe treatment and disposal of fracking wastewater to protect drinking water sources.

“The discovery of these chemicals in produced water suggests that greater monitoring and remediation efforts are needed since many of them are listed to be dangerous for human health by the World Health Organization,” said Dr. Emanuela Gionfriddo, assistant professor of analytical chemistry in the UToledo Department of Chemistry and Biochemistry, and the School of Green Chemistry and Engineering. “Our comprehensive characterization sheds insight into the processes taking place during hydraulic fracturing and the nature of the geologic formation of each well site.”

Drilling operations are often performed by injecting treated water into the subsurface that contains various publicly undisclosed additives to assist in the drilling process. The injected water mixes with groundwater and then resurfaces as waste byproduct containing contaminants both from the drilling site and the additives used.

Approach and findings

The chemists used an approach developed by Gionfriddo’s research team in 2020 called thin-film, solid-phase microextraction to extract organic solubles from eight produced water samples from the Permian Basin and Eagle Ford formation in Texas.

Analysis found a total of 266 different dissolved organic compounds, including a pesticide called atrazine; 1,4-dioxane, an organic compound that is irritating to the eyes and respiratory tract; pyridine, a chemical that may damage the liver; and polycyclic aromatic hydrocarbons (PAHs), which have been linked to skin, lung, bladder, liver and stomach cancers.

Polymer helped detecting further elements including hazardous metals

Using a new polymer developed in 2021 at UToledo, the team also confirmed the presence of 29 elements, including rare earth elements, selenium and hazardous metals such as chromium, cadmium, lead and uranium.

The researchers also suggest the technology used for their comprehensive analysis of produced water is essential for proper reuse or disposal by oil and gas producers.

“We found a way to use more accessible instrumentation in the analysis of such complex samples compared to more expensive workflows involving high-resolution mass spectrometry,” said Dr. Jon Kirchhoff, Distinguished University Professor and chair of the UToledo Department of Chemistry and Biochemistry.

Das könnte Sie auch interessieren:

New report calls for making a full global commitment to drought preparedness
From seawater to drinking water: researchers develop filter-less portable desalination unit
Dual water and energy scheme to solve water-energy conflict in Central Asia

Passende Firmen zum Thema:

Publikationen

Water Sensitive Urban Design as a Role Model for Water Management in Germany?

Water Sensitive Urban Design as a Role Model for Water Management in Germany?

Autor: Jacqueline Hoyer / Juliane Ziegler
Themenbereich: gwf - Wasser|Abwasser
Erscheinungsjahr: 2013

“Water Sensitive Urban Design” (WSUD), originally developed in Australia, is a planning and design approach combining the functionality of water management with principles of urban design. WSUD is mainly used in the development of integrated ...

Zum Produkt

Tertiary Filtration with Ultrafiltration Membranes in Municipal Wastewater Treatment Plants

Tertiary Filtration with Ultrafiltration Membranes in Municipal Wastewater Treatment Plants

Autor: Martin Wett and Eberhard Back
Themenbereich: gwf - Wasser|Abwasser
Erscheinungsjahr: 2011

During the operation of tertiary filtration stages in a dead-end-mode, retentate concentrate and rinsing water from membrane cleaning accrue naturally. Work on process solutions for these process waters with no additional particle loads for the ...

Zum Produkt

Water Solutions – 01 2017

Water Solutions – 01 2017

Themenbereich: Water Solutions
Erscheinungsjahr: 2017

The leading professional magazine for water and wastewater ...

Zum Produkt

Mehr Publikationen...

Sie möchten die gwf Wasser + Abwasser testen

Bestellen Sie Ihr kostenloses Probeheft

Überzeugen Sie sich selbst: Gerne senden wir Ihnen die gwf Wasser + Abwasser kostenlos und unverbindlich zur Probe!

Finance Illustration 03