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Adsorption Behavior of Porous Sludge-Based Activated Carbon for Rhodamine B Removal
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Lihua LI, Siyao DENG, Minghao YUAN, Jiayue GAO, Yongkang TAO, Xin WANG
Mining and Metallurgical Engineering | 2026, 46(1) : 168 - 174
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Mining and Metallurgical Engineering | 2026, 46(1): 168-174
• MATERIALS •
Adsorption Behavior of Porous Sludge-Based Activated Carbon for Rhodamine B Removal
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Lihua LI, Siyao DENG, Minghao YUAN, Jiayue GAO, Yongkang TAO, Xin WANG
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  • School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China
doi: 10.3969/j.issn.0253-6099.2026.01.28
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With sludge as the main raw material and corn straw as a carbon raiser, porous sludge-based activated carbon (PSAC) was prepared by adopting the ZnCl2 activation method. The adsorption performance of PSAC for removal of organic dye Rhodamine B (Rh B) was investigated, and the corresponding adsorption mechanism was also explored. Results indicate that PSAC has a rich pore structure, a high specific surface area (703.14 m2/g), and abundant oxygen-containing functional groups, with a point of zero charge (PZC) of 4.2. The adsorption kinetics of Rh B onto PSAC follows the Lagergren's pseudo-second-order kinetic model, and the adsorption isotherm is better fitted to the Langmuir equation. At 298 K, the saturated adsorption capacity of PSAC for Rh B reaches 196.08 mg/g. The adsorption process is dominated by chemical adsorption, and is spontaneous, endothermic and entropy-driven process. Electrostatic interaction, hydrogen bond interaction, π-π interaction and hydrophobic interaction all play certain roles in the adsorption process, among which electrostatic interaction is the main driving force.

activated carbon  /  sludge  /  dye wastewater  /  adsorbent  /  pore structure  /  Rhodamine B  /  adsorption performance
李丽华, 邓思瑶, 袁铭浩, 高佳月, 陶永康, 王鑫. 多孔污泥基活性炭对罗丹明B的吸附行为研究. 矿冶工程杂志, 2026 , 46 (1) : 168 -174 . DOI: 10.3969/j.issn.0253-6099.2026.01.28
Lihua LI, Siyao DENG, Minghao YUAN, Jiayue GAO, Yongkang TAO, Xin WANG. Adsorption Behavior of Porous Sludge-Based Activated Carbon for Rhodamine B Removal[J]. Mining and Metallurgical Engineering, 2026 , 46 (1) : 168 -174 . DOI: 10.3969/j.issn.0253-6099.2026.01.28
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Year 2026 volume 46 Issue 1
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doi: 10.3969/j.issn.0253-6099.2026.01.28
  • Receive Date：2025-08-30
  • Online Date：2026-10-08
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  • Received：2025-08-30
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    School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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