Preparation of Biochar from Papermaking Sludge and Its Adsorption Characteristics for Tetracycline.

Following that, when the dosage was raised, PSBC 900’s tetracycline removal rate and adsorption capacity displayed a flat trend, whereas PSBC 500 and 700’s tetracycline removal rates continued to show an increasing trend, albeit with a smaller magnitude, and their adsorption capacities tended to be stable.

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In conclusion, the biochars produced at three different temperatures (PSBC 500, PSBC 700, and PSBC 900) demonstrated a decreasing trend in tetracycline adsorption and removal rates in the wastewater solution as the initial mass concentration of tetracycline increased.

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