Microbial transformations and biological effects of fungicide- derived benzothiazoles determined in industrial wastewater

T. Reemtsma; O. Fiehn; G. Kalnowski; M. Jekel

Microbial transformations and biological effects of fungicide- derived benzothiazoles determined in industrial wastewater

T. Reemtsma, O. Fiehn, G. Kalnowski, M. Jekel

Research output: Chapter in Book/Report/Conference proceeding › Chapter

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

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Reemtsma, T., Fiehn, O., Kalnowski, G., & Jekel, M. (1995). Microbial transformations and biological effects of fungicide- derived benzothiazoles determined in industrial wastewater. In Environmental Science & Technology (2 ed., Vol. 29, pp. 478-485)

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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",

author = "T. Reemtsma and O. Fiehn and G. Kalnowski and M. Jekel",

year = "1995",

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T1 - Microbial transformations and biological effects of fungicide- derived benzothiazoles determined in industrial wastewater

AU - Reemtsma, T.

AU - Fiehn, O.

AU - Kalnowski, G.

AU - Jekel, M.

PY - 1995

Y1 - 1995

N2 - 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

AB - 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

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