1. UPR Recyclage et Risque, CIRAD, 18524 Dakar, Senegal
2. Recyclage et Risque, Univ. Montpellier, CIRAD, Montpellier, France
3. Laboratory of Environmental Engineering, Federal University of Santa Maria (UFSM), 97105-900 Santa Maria, Rio Grande do Sul, Brazil
4. Department of Soil and Environment, Swedish University of Agricultural Sciences, SE-75007 Uppsala, Sweden
5. Future Industries Institute, University of South Australia, Adelaide, South Australia 5095, Australia
6. UPR Recyclage et Risque, CIRAD, F-34398 Montpellier, France