Abstract:
Incorporation of paddy husk biochar (PHBC 350) and Colocasia esculenta (C. esculenta) usage in vertical
flow constructed wetlands (VFCWs) for treatment of synthetic wastewater mixed with rhodamine B
(RhB) was the focus. To increase the removal efficiency of VFCW, pebbles (0.0125 m 3 ), sand (0.005 m 3 ),
and PHBC 350 (0.0075 m 3 ) were used. Setups of VFCWs, S (sand) and SB (sand + biochar [30% v/v]),
were established. DO, pH, TS, TDS, TSS, EC, color, turbidity, dye concentration, and RhB removal
percentage were evaluated. The measured values of DO, EC, pH, TS, TDS, and TSS in SB were
6.03 mg/L, 1.72 mS/cm, 6.14, 1080 ppm, 860 ppm, and 220 ppm, respectively, in 10 days. Moreover, SB
gave a statistical level of RhB removal of 81.5%. All in all, incorporation of biochar into VFCWs created
new knowledge to advance the removal performance for wastewater mixed with organic pollutants by
understanding its mechanistic dynamics.
