| CABEQ 34 (1) (2020) 1-57 | 

| Treatment for Landfill Leachate via Physicochemical Approaches: An Overview  K. S. Khoo,  X. Tan,  P. L. Show,  P. Pal,  J. C. Juan,  T. C. Ling,  S. Ho and  T. H. P. Nguyen | 1-24 | 
| Mixed Oxides as Successful Sorption Materials for Some Active Pharmaceutical Ingredients  E. Vrbková,  E. Vyskočilová,  A. Semrádová,  L. Sekerová and  L. Červený | 25-33 | 
| An Efficient Biosurfactant by Pseudomonas stutzeri Z12 Isolated from an Extreme Environment for Remediation of Soil Contaminated with Hydrocarbons  S. Pourfadakari,  S. Jorfi and  S. Ghafari | 35-48 | 
| Valorization of Banana Peel for Citric Acid Production under Solid State Fermentation with Aspergillus niger   T. Chysirichote | 49-57 |