Environmental persistence, hazard, and mitigation challenges of nitroaromatic compounds

Area of Science:

• Environmental Chemistry
• Toxicology
• Environmental Science

Background:

• Nitroaromatic compounds (NACs) are widely used industrially, leading to significant environmental pollution.
• Their recalcitrant nature, due to the nitro group on the benzene ring, causes environmental persistence.
• NACs are recognized as hazardous pollutants, listed by the USEPA.

Purpose of the Study:

• To provide updated information on NACs, covering their sources, environmental prevalence, and detection methods.
• To highlight the harmful effects of NACs and review current and emerging treatment technologies.
• To discuss challenges in NAC remediation and offer recommendations for future research.

Main Methods:

• Literature review of scientific publications on nitroaromatic compounds.
• Synthesis of information on sources, environmental occurrence, and detection techniques.
• Analysis of physico-chemical and biological treatment methods and their limitations.

Main Results:

• NACs originate from diverse industrial applications and are found across various environmental matrices.
• Detection methods have advanced, but effective and sustainable remediation technologies remain a challenge.
• Existing treatment processes are often ineffective, leading to environmental release.

Conclusions:

• Effective and sustainable remediation strategies for NACs are crucial due to their toxicity and persistence.
• Further research is needed to overcome challenges in NAC detection and treatment.
• Recommendations are provided to guide future research for better environmental management of NACs.