682
Sr. no.
Plant part
Response
Parameters
Results
References
5.
Water hyacinth
biochar
Cr (IV)
Carbonization temperature, 500–800 °C
ZnO content, 10–50% (wt)
Contact time, 0.17–14 h
Cr (IV) removal efficiency, 95% with
biochar loaded with 30% (wt) ZnO
and carbonization temperature of
700 °C in 14 h
Yu et al. [50]
6.
Water hyacinth Methylene blue Initial concentration of MB, 100–600 mg/L
pH, 2–10
Adsorbent dose, 10–100 mg
Contact time, 30 min–24 h
MB removal, 320 mg/g at acidic pH,
contact time of 2 h and 50 mg
adsorbent dose
Siswoyo et al.
[31]
7.
Shoot
Cr and Cu
Temperature, 28 ± 2 °C
Time, 3 h
Influent concentration in standard solution (SS):
Cr, 472.56 mg/L
Cu, 482.06 mg/L
Influent concentration in tannery effluent (TE):
Cr, 10.4749 mg/L
Cu, 2.445 mg/L
The removal efficiency of Cr and Cu,
99.98% and 99.96% for SS and
98.83% and 99.59% for TE,
respectively
Sarkar et al. [51]
8.
Roots
Pb, Zn, Cu and
Cd
Time, 30 min–4 h
pH, 1–7
Root powder concentration, 5–40 g/L
Initial metal concentration:
Single-metal system, 5–25 mg/L
Multimetal system, 15–25 mg/L
Pb (98.33%), Cd (95.16%) and Zn
(93.5%) were removed at pH -5, root
powder concentration, 20 g/L; initial
metal concentration of Pb and Zn,
25 mg/L; Cu and Cd, 20 mg/L in
single-metal system
Order of metal adsorption,
Pb > Cd > Zn > Cu
Li et al. [52]
9.
Stem and
leaves
Uranium
U(VI)
Temperature, 25–45 °C
Time, 10–160 min
pH, 2–7
Initial U(VI) concentration, 50–300 mg/L
Bioadsorbent concentration, 1.2 g/L
Adsorption capacity of U(VI),
142.85 mg/g at pH 5.5, and
equilibrium was achieved within
30 min at 25 °C and initial U(VI)
concentration of 150 mg/L
Yi et al. [53]
P. V. Ganorkar et al.