Transport Behavior of RB5 Dye in Alluvial Soil in the Northeast of Brazil

The textile industry generates a large volume of chemically diversified effluents containing, among other compounds, dyes. Untreated wastes are contaminants to surface water, soil, and groundwater. In this aspect, various studies have explored the issue contamination alluvial soils in Alto Capibaribe region, northeast Brazil, due local activity. This inserted into Brazilian semiarid suffers from water scarcity, there is need for rural communities use formations supply. simulation solute transport fundamental tool understanding environmental performance risks associated with by Transport parameters that directly influence pollutant dynamics sedimentary environments characterized. study evaluated retention mobility dye Remazol Black 5 (RB5) two superficial layers soil obtain parameters. laboratory, tests columns RB5 (concentration 25 mg L−1) KBr tracer 35.7 g solutions were conducted. CDE two-region models used model experimental data, two-site was data. Physical non-equilibrium found transport, adequately modeled breakthrough curves (BTCs). For RB5, results showed chemical non-equilibrium, adequate BTCs. indicate layer most responsible where solution less mobile than lower layer. Both low high indicating region may contaminate