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February 26, 2026ChemosphereOpen Access

Redox mediators and microaeration boosting the linear alkylbenzene sulfonate removal

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Authors

MOMaurício Guimarães de OliveiraVSVicente Elício Porfiro Sales Gonçalves da SilvaSVS. M. O. L. VASCONCELOS

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Overview

Experiments demonstrate improved biodegradation performance of linear alkylbenzene in anaerobic conditions, indicating potential for enhanced methane production and microbial community resilience.

Key Points

  • To evaluate the impact of redox mediator AQS and microaeration on LAS biodegradation in anaerobic conditions.
  • Conducted experiments with two UASB reactors: strictly anaerobic and micro-aerated.
  • Evaluated effects with and without AQS addition over a 90-day period.
  • Measured removal efficiencies for LAS and methane production.
  • LAS removal improved from 32% to 65% with AQS, and to 77% with microaeration combined with AQS.
  • Microaeration increased methane production to 5.6 L/day and specific yield to 0.50 LCH4·gCOD-1.
  • AQS enriched Methanobacterium, contributing to the microbial community shifts observed.

Cite This Study

Oliveira et al. (2026) studied this question.

synapsesocial.com/papers/699f95ba1bc9fecf3dab3d9bhttps://doi.org/10.1016/j.chemosphere.2026.144878
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