Skip to Main Content

SGR and active carbon were studied for evaluating their adsorption capacity of SDS in the synthetic wastewater (Table 2). The maximum adsorption capacity of SGR was evaluated for 70 h. The capacity for SGR for the reduction of SDS and COD were 30% and 10%, respectively, at a flow rate of 5 mL h−1. It was observed that 30% adsorption of SDS occurred within 5 h of wastewater treatment. The significant challenge in the bacterial treatment of detergent containing wastewater is high concentration of SDS (2,400 mg/L). The use of adsorbent helped to reduce the high concentration of SDS, enabling the bacterial system in the third stage reactor to the complete removal of SDS at a faster pace with 30% reduction caused by adsorbent alone. Although the free and immobilized cells are capable of degrading such high SDS concentrations, an inclusion of an adsorption based remediation step in the reactor would increase the pace of degradation by contributing to surfactant reduction by adsorption, as well as removal of floccules in the wastewater generated in preliminary stages of processing.

Table 2

Performance of activated charcoal and SGR in the reduction of COD and SDS for the adsorption of synthetic wastewater

Adsorbents% SDS* removal (mg/l)% COD (mg/l)*
Activated charcoal 9 ± 0.2 13 ± 0.2 
Sieved SGR particle size (cm) 
 1 30 ± 2 38 ± 1 
 2 23 ± 2 28 ± 2 
 3 18 ± 1 23 ± 2 
Adsorbents% SDS* removal (mg/l)% COD (mg/l)*
Activated charcoal 9 ± 0.2 13 ± 0.2 
Sieved SGR particle size (cm) 
 1 30 ± 2 38 ± 1 
 2 23 ± 2 28 ± 2 
 3 18 ± 1 23 ± 2 

*Values expressed as mean ± standard deviation.

Close Modal

or Create an Account

Close Modal
Close Modal