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Bioresources and Bioprocessing
Fig. 7 | Bioresources and Bioprocessing

Fig. 7

From: Cotton stalk-derived hydrothermal carbon for methylene blue dye removal: investigation of the raw material plant tissues

Fig. 7

Effect of initial concentration (a), temperature (b), solution pH (b) and reusability on remove of MB onto CS-H2SO4 + NaOH-HTC. Adsorption conditions: a MB water solution volume is 75 mL with a pH value of 7, adsorbent dosage is 70 mg, 30 °C; b MB water solution volume 75 mL with a concentration of 100 mg/L with a pH value of 7, adsorbent dosage is 70 mg; c MB water solution volume 75 mL with a concentration of 300 mg/L, adsorbent dosage is 70 mg, 30 °C and 120 min; d MB water solution volume 75 mL with a concentration of 300 mg/L, adsorbent dosage is 70 mg, 30 °C and 120 min. The shake speed for each batch experiment is 120 rpm

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