MnOx-Coffea arabica Husk and Catha edulis Leftover Biochar Nanocomposites for Removal of Methylene Blue from Wastewater

Table 1

Preliminary experimental data for selection of adsorbents for removal of MB.

Adsorbent	KMnO4 (millimole)	Pyrolysis temperature (°C)	MB removal efficiency (%)
CHB300	0.0	300	39.08
CHB400	0.0	400	44.73
CHB500	0.0	500	80.78
MnOx-CHBNC300	12.5	300	99.23
MnOx-CHBNC400	12.5	400	89.96
MnOx-CHBNC500	12.5	500	96.10
MnOx-CHBNC300	25.0	300	97.20
MnOx-CHBNC400	25.0	400	96.95
MnOx-CHBNC500	25.0	500	93.99
MnOx-CHBNC300	50.0	300	84.40
MnOx-CHBNC400	50.0	400	95.33
MnOx-CHBNC500	50.0	500	95.51
MnOx-CHBNC300	75.0	300	66.65
MnOx-CHBNC400	75.0	400	97.46
MnOx-CHBNC500	75.0	500	86.38
KLB300	0.0	300	75.26
KLB400	0.0	400	76.41
KLB500	0.0	500	88.37
MnOx-KLBNC300	12.5	300	98.01
MnOx-KLBNC400	12.5	400	97.14
MnOx-KLBNC500	12.5	500	96.86
MnOx-KLBNC300	25.0	300	97.39
MnOx-KLBNC400	25.0	400	95.99
MnOx-KLBNC500	25.0	500	96.73
MnOx-KLBNC300	50.0	300	89.45
MnOx-KLBNC400	50.0	400	95.45
MnOx-KLBNC500	50.0	500	97.30
MnOx-KLBNC300	75.0	300	86.64
MnOx-KLBNC400	75.0	400	86.75
MnOx-KLBNC500	75.0	500	96.80

Bold values show that the materials selected are adsorbent.