Integration of aerobic granulation and UV/H2O2 processes in a continuous flow system for the degradation of sulfolane in contaminated water
| Autor: | Gopal Achari, Jordan Hollman, Joo-Hwa Tay, Muhammad Faizan Khan, Linlong Yu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
geography
Environmental Engineering geography.geographical_feature_category Chemistry 0208 environmental biotechnology 02 engineering and technology 010501 environmental sciences Contamination Pulp and paper industry 01 natural sciences Soil contamination 6. Clean water 020801 environmental engineering chemistry.chemical_compound Aerobic granulation Degradation (geology) Sulfolane Effluent Groundwater 0105 earth and related environmental sciences Water Science and Technology Water well |
| Zdroj: | Environmental Science: Water Research & Technology. 6:1711-1722 |
| ISSN: | 2053-1419 2053-1400 |
| DOI: | 10.1039/c9ew01048c |
| Popis: | Sulfolane contamination has increasingly become a major environmental concern around the world with emerging reports of groundwater, drinking water wells and soil contamination. In this study, a novel approach of integrating aerobic granulation technology with UV/H2O2 process in a continuous flow-through operation sequence was investigated to remediate sulfolane contaminated waters. The new hybrid technology was able to eliminate more than 99.99% of sulfolane in less than 6.3 h of combined retention time. The degradation kinetics of sulfolane were evaluated in batch and continuous flow operation which showed zero and first order for aerobic granulation and UV/H2O2 processes, respectively. In addition, the flow-through system was able to generate and maintain a healthy aerobic granular system characterized by a stable MLVSS/MLSS ratio as well as elemental and bacterial community compositions within the granules. H2O2 concentration was a crucial element for sulfolane degradation in UV/H2O2 process and various key factors were also identified that govern residual H2O2 concentration in UV/H2O2 effluents. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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