Table 12 Comparative study of RAAC with other adsorbents applied for removal of BBR dye

1.

Coconut shell

Adsorbent dosage 5 g/L, 360 min contact time, initial dye concentration 10 mg/L and pH 2

98.77%

[75]

2.

Macroporous polystyrene resin

Solution pH 2.0, 150 min contact time at 25 °C, and adsorbent dosage 1.0 g/L

208.33 mg/g

[76]

3.

Snail shell powder

Contact time 10 min, dye concentration 30 mg/L, 0.01 g/100 mL

99.09%

[77]

4.

Date pits

1.5 g/L adsorbent dosage, 40 mg/L dye concentration, pH of 2 and contact time of 50 min

90.4%

[78]

5.

Gelidium corneum biomass

100 mg/L RBB, pH 5, 4 g/L algal biomass and 180 min of contact time

89.18%

[19]

6.

Pomegranate fruit peel

Adsorbent dose 0.2 g/200 mL, dye concentration 25 mg/L, contact time 24 h

81.35%

[79]

7.

Sewage sludge biochar

Adsorbent dose of 100 g/L and dye concentration (100 mg/L) after 60 min

87.03 mg/g

[18]

8.

Thuja orientalis leaves:

pH 6 and contact time of 300 min, adsorbent dosage 2 g/L and dye concentration 4.165 g/L

81%

[16]

9.

Rumex abyssinicus derived activated carbon

pH of 2, contact time 50 min, dye concentration 100 mg/L and adsorbent dosage of 0.15 g/L

99.98%

Current study