Abstract
Sulfamethazine (SMT) as a veterinary drug has been detected frequently in the environment. In this study, six biochars produced from tea waste (TW) at 300 and 700°C with or without N2 and steam activation were characterized and evaluated for SMT sorption in water. The sorption of SMT was interpreted as a function of biochar production condition, SMT concentration, pH and physicochemical characteristics of biochar. Distribution coefficient data showed high sorption of SMT at low pH (~3) and the highest sorption density of 33.81mgg-1 was achieved by the steam activated biochar produced at 700°C. The steam activation process increased the adsorption capacity by increasing the surface area of the biochar. The π-π electron donor-acceptor interaction, cation-π interaction and cation exchange at low pH were the primary mechanisms governing SMT retention by biochars. Overall, steam activated tea waste biochar could be a promising remedy of SMT removal from water.
| Original language | English |
|---|---|
| Pages (from-to) | 303-308 |
| Number of pages | 6 |
| Journal | Bioresource Technology |
| Volume | 166 |
| DOIs | |
| Publication status | Published - Aug 2014 |
| Externally published | Yes |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- Black carbon
- Charcoal
- Emerging contaminant
- Low cost adsorbent
- Veterinary antibiotics
Programme Area
- Programme Area 2: Water Resources
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