A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Adsorption of Sulfamethoxazole by Dried Biomass of Activated Sludge Collected from Biological Nutrient Removal (BNR) Systems
Widespread use of human and veterinary antibiotics has drawn attention to the occurrence and fate of antibiotics in the environment. Despite very low concentrations of these chemicals ranging from < 1 ng/L to hundreds µg/L, they are bioaccumulating in the environment and potentially spreading antibiotic resistance genes into ecosystems. The focus of current research interest is on municipal wastewater treatment plant (MWTP) effluents which are the main point sources for introducing these chemicals into surface waters. This study investigated the feasibility of using MWTP activated sludge as a cost-effective and sustainable adsorbent for sulfamethoxazole (SMX) removal. The activated sludge was collected from the aerobic basin of a biological nutrient removal (BNR) MWTP system. The sludge was oven-dried and used as an adsorption material without further modification. Langmuir and Freundlich isotherms were used to clarify the SMX adsorption parameters on dried activated sludge (DAS). The specific surface area of DAS correlates with the adsorption capacity. The specific surface area is reported as 10.5 m2/g for DAS. The data reported a rise in SMX adsorbed, from 0.02 to 11.07 mg/L, with an increase in the SMX initial concentration, increasing the interaction with adsorbent. SMX adsorption on DAS satisfactorily fits with the Freundlich isotherm, with n = 1.87, which implies a high adsorption affinity of SMX on DAS. Further modification could improve the adsorption capacity by adding functional groups with higher adsorption capacity of DAS toward pharmaceutical removal from water and wastewater matrices.
Adsorption of Sulfamethoxazole by Dried Biomass of Activated Sludge Collected from Biological Nutrient Removal (BNR) Systems
Widespread use of human and veterinary antibiotics has drawn attention to the occurrence and fate of antibiotics in the environment. Despite very low concentrations of these chemicals ranging from < 1 ng/L to hundreds µg/L, they are bioaccumulating in the environment and potentially spreading antibiotic resistance genes into ecosystems. The focus of current research interest is on municipal wastewater treatment plant (MWTP) effluents which are the main point sources for introducing these chemicals into surface waters. This study investigated the feasibility of using MWTP activated sludge as a cost-effective and sustainable adsorbent for sulfamethoxazole (SMX) removal. The activated sludge was collected from the aerobic basin of a biological nutrient removal (BNR) MWTP system. The sludge was oven-dried and used as an adsorption material without further modification. Langmuir and Freundlich isotherms were used to clarify the SMX adsorption parameters on dried activated sludge (DAS). The specific surface area of DAS correlates with the adsorption capacity. The specific surface area is reported as 10.5 m2/g for DAS. The data reported a rise in SMX adsorbed, from 0.02 to 11.07 mg/L, with an increase in the SMX initial concentration, increasing the interaction with adsorbent. SMX adsorption on DAS satisfactorily fits with the Freundlich isotherm, with n = 1.87, which implies a high adsorption affinity of SMX on DAS. Further modification could improve the adsorption capacity by adding functional groups with higher adsorption capacity of DAS toward pharmaceutical removal from water and wastewater matrices.
Adsorption of Sulfamethoxazole by Dried Biomass of Activated Sludge Collected from Biological Nutrient Removal (BNR) Systems
Lecture Notes in Civil Engineering
Gupta, Rishi (editor) / Sun, Min (editor) / Brzev, Svetlana (editor) / Alam, M. Shahria (editor) / Ng, Kelvin Tsun Wai (editor) / Li, Jianbing (editor) / El Damatty, Ashraf (editor) / Lim, Clark (editor) / Minaei, S. (author) / McPhedran, K. N. (author)
Canadian Society of Civil Engineering Annual Conference ; 2022 ; Whistler, BC, BC, Canada
Proceedings of the Canadian Society of Civil Engineering Annual Conference 2022 ; Chapter: 64 ; 1007-1018
2023-08-17
12 pages
Article/Chapter (Book)
Electronic Resource
English
Copper Removal Efficiency of Biological Nutrient Removal (BNR) Activated Sludge
| British Library Conference Proceedings | 1996
Design of nutrient removal activated sludge systems
| British Library Conference Proceedings | 2003
Sludge protection and oxygen demand in nutrient removal activated sludge systems
| British Library Conference Proceedings | 1996