Abstract
Benzothiazole (BT), 2-mercaptobenzothiazole (MBT), and 2-(methylthio)benzothiazole (MTBT) were determined as degradation products of the fungicide 2-(thiocyanomethylthio)benzothiazole (TCMTB) in tannery wastewater and are shown to be incompletely removed (75%) in an anaerobic and aerobic wastewater treatment pilot plant. Average total concentration of these benzothiazoles is 5.7 μmol L-1 in the untreated wastewater and 1.4 μmol L-1 after aerobic treatment. Aerobic batch degradation tests revealed that TCMTB is transformed to MBT. MBT is primarily methylated to MTBT, which was not further degradable. BT was aerobically degraded along unknown pathways. It is concluded that 2-substituted benzothiazoles employed in industrial processes are not completely removable by biological wastewater treatment and are of concern for aquatic environment due to their limited biodegradability and potential toxicity. -from Authors
| Original language | English (US) |
|---|---|
| Title of host publication | Environmental Science & Technology |
| Pages | 478-485 |
| Number of pages | 8 |
| Volume | 29 |
| Edition | 2 |
| State | Published - 1995 |
| Externally published | Yes |
ASJC Scopus subject areas
- Environmental Science(all)
- Earth and Planetary Sciences(all)
- Environmental Engineering
- Environmental Chemistry