LIUXin-xin,PANGMin,LIHui-dong,et al.Preparation of Sludge-based Magnetic Adsorbent and Its Removal of Copper from Wastewater[J].China Water & Wastewater,2023,39(21):99-103.
Preparation of Sludge-based Magnetic Adsorbent and Its Removal of Copper from Wastewater
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第21期
Page:
99-103
Column:
Date of publication:
2023-11-01
- Abstract:
- A high-efficiency sludge-based magnetic adsorbent was prepared under the following parameters: mass ratio of municipal sludge, mangosteen peel waste, ferric oxide and potassium carbonate of 4∶1∶2.5∶0.5, and carbonization at 400 ℃ for 1 h. After further chemical modification, a carboxylated sludge-based magnetic adsorbent was prepared for adsorption of copper-containing wastewater and characterized by scanning electron microscopy, so as to explore the performance of the sludge-based adsorbent materials for the removal of copper ions. For 50 mL of copper ion solution (50 mg/L), the optimal adsorption conditions were as follows: temperature of 25 ℃, pH of 5.0 and adsorbent dosage of 25 mg. The pseudo-second order kinetic and Langmuir isotherm model could fit the adsorption experiment well, and the maximum adsorption capacity was 142.65 mg/g. Under the same conditions, the adsorptive capacity of the modified carboxylated sludge-based magnetic adsorbent was increased by approximately 10% and the equilibrium time was shortened by approximately 120 min compared with those of the unmodified adsorbent.
Last Update:
2023-11-01