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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/14237

Title: Evaluation of selected activated carbon filters and sand media for nutrient and pathogen removal from an anaerobic baffled reactor effluent system
Authors: Kumatse, Ignatius Makafui
Essandoh, Helen Michelle Korkor
Asiedu, Nana Yaw
Oduro-Kwateng, Sampson
Keywords: Anaerobic baffled reactor
Issue Date: 5-Jul-2021
Abstract: The performance of biochar media filters derived from cocoa pod husk (CC) and coconut shell (CN) was assessed in comparison with sand media (SS), under a range of hydraulic loading rates (HLR) (0.105-0.210 m3/m2.d) during a 9 weeks study period. The results at the end of week 7 under a HLR of 0.105m³/m².d, showed CC had the best removal efficiency with respect to the nutrients (TKN (95.56%), NH3-N (99.68%), Total-P (89.33%) and pathogens (E. coli non-detected), meeting the Ghana Environmental Protection Agency (GH EPA) guideline values with the exception of Total-P (2.15 mg/L). CN failed to meet the GH EPA limits for Total-P (6.6mg/L), NH3-N (8.6mg/L) and E.coli (30 cfu/100ml). SS failed to meet any of the GH EPA guideline with respect to nutrient and pathogen. The performance of SS, CC and CN were all observed to deteriorate in week 8 when the HLR was increased to 0.120 m3/m2/d (doubled). However, the GH EPA limit with respect to Total-P was met by CC (1.93mg/L). With a reduction in HLR to 0.1575 m3/m2/d in week 9 the performance of SS, CC and CN were observed to improve as compared to week 8 and week 7 in some cases. The removal of Total-P (1.27mg/L) by CC in week 9, was observed to be the best during the entire study period. A constant pathogen removal efficacy (non-detected) was observed for CC irrespective of the HLR used. CN showed a decline of removal performance in Total-P, TKN and NH3-N during the HLR variation phase. CC proved to be the best performed filter meeting the GH EPA guideline values with respect to nutrients and pathogen.
URI: http://hdl.handle.net/123456789/14237
Appears in Collections:College of Engineering

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