Enrofloxacin uptake and retention on different types of clays.

Highlights: [•] Different sorption sites were available for enrofloxacin (EN) uptake on different types of clays. [•] EN uptake was limited to the external sites for non-swelling clays. [•] Interlayer spaces were the major host sites for EN uptake on swelling clays. [•] Cation exchange was the dominant mechanism for cationic and neutral EN. [Copyright &y& Elsevier]