Confectionery wastewater treatment through upflow microbial fuel cell

Confectionery wastewater treatment through upflow microbial fuel cell

Abstract


In the present study, upflow microbial fuel cell was setup for the treatment of confectionery wastewater.
Upflow anaerobic sludge blanket reactor was used as anaerobic unit which was connected with
aerobic units with salt bridge. For optimization of reactor startup synthetic wastewater was used for
30 d then different concentrations of confectionery wastewater were treated. Samples were analyzed
for physicochemical parameters and chemical oxygen demand (COD) and Pearson’s correlation
matrix was applied. Biogas was collected and electricity was measured through multimeter. Total
anaerobic microbial count was performed on thioglycollate media (CFU mL–1) and biofilm formation
was observed through scanning electron microscopy (SEM). After startup COD removal efficiency
with 50% diluted wastewater was 100%. Highest voltage (982 mV), power density (0.042 W cm–2)
and current (797 μA) were observed when 1 mL nutrients added wastewater was used. Maximum
biogas 472 mL d–1 production was achieved in undiluted wastewater sample. Highest anaerobic count
1.24 × 104 CFU mL–1 was observed when 1.5 mL nutrient added wastewater was used. SEM analysis
showed biofilm formation on C anode with filamentous microbes.

No. of Pages
248–254
Volume
99
Author's Details
Farhana Maqbool, Zulfiqar Ahmed Bhatti, Hina Nazir, Sadia Qayyum, Yang-Guo Zhao, Ibrar Khan, Rasool Kamal, Arshid Pervez
Research Field
Microbiologyy