Sample

pH-value

content

Max. adsorption

Before adsorption

After adsorption

Before adsorption

After adsorption

0.9 g/L (≙ 0.092%)

2.02

2.77

853 mg/L (≙m_A/m_C^** 256 mg/g)

240 mg/L

(≙m_A/m_C^** 189 mg/g)

73%

0.5 g/L (≙ 0.051%)

2.25

5.40

511 mg/L (≙m_A/m_C^** 153 mg/g)

100 mg/L

(≙m_A/m_C^** 125 mg/g)

79%