Microwave heating remediation of soils contaminated with diesel fuel

摘要: Diesel fuel represents a permanent source of soil pollution, and its removal is key factor for human health. To address the limitations conventional remediation techniques, microwave (MW) heating could be employed due to great potentiality. This work presents lab-scale experiments performed study potential MW processing diesel-polluted soils treatment related modeling optimization systems operating conditions. A sandy was artificially contaminated with diesel fuel, moisturized different amounts water content, thermally treated by radiation using apparatus investigate effect moisture on temperature profiles contaminant kinetics. An power, ranging from 100 1,000 W, times 5, 10, 18, 30, 60 min were investigated. Contaminant residual concentration values fitted first order kinetic model, desorption parameters calculated each at powers. Main results show that power applied significantly influences kinetics, content in has major final reachable during heating. Minimal concentrations achievable applying powers higher than 600 W time longer 60 min. For shorter 10 min, which result about 100 °C, distillation process increases removal, whereas times, main remedial treatment. thermal shown governed pseudo-first-order it better choice soils, compared several biological, chemical–physical, or treatments, excellent efficiency. The obtained are scientific practical interest represent suitable tool optimize conditions guide design scale-up treatments full-scale activities soils.