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Synthesis of Mesoporous γ-AlOOH Absorbent Via Direct Aging-Ammonium Salt Substitution Combined Method and Its Adsorption Properties for Congo Red
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Wenquan LI1, 2, 3, Zhonglin LI1, 2, Kecheng SHANG1, 2, Ting ZOU1, 2, Guixiang HE3, Yibing LI1, 2
Hydrometallurgy of China | 2025, 44(4) : 503 - 511
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Hydrometallurgy of China | 2025, 44(4): 503-511
• Experiment Research •
Synthesis of Mesoporous γ-AlOOH Absorbent Via Direct Aging-Ammonium Salt Substitution Combined Method and Its Adsorption Properties for Congo Red
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Wenquan LI1, 2, 3, Zhonglin LI1, 2, Kecheng SHANG1, 2, Ting ZOU1, 2, Guixiang HE3, Yibing LI1, 2
Affiliations
  • 1 Department of Materials Science and Engineering,Guilin University of Technology,Guilin 541004,China
  • 2 Key Laboratory of New Processing Technology for Nonferrous Metals and Materials,Ministry of Education,Guilin University of Technology,Guilin 541004,China
  • 3 Department of Metallurgical and Resources Engineering,Guilin University of Technology (Nanning Campus),Nanning 530000,China
Published: 2025-08-20 doi: 10.13355/j.cnki.sfyj.2025.04.010
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Synthesization of mesoporous γ-AlOOH adsorbent via direct aging-ammonium salt substitution combined method in the presence of a desalting agent using metallurgical alumina hydroxide as raw material was investigated,and it was used for the adsorption of Congo red in wastewater.The physical phase and microscopic morphology of mesoporous γ-AlOOH were characterized by XRD,FT-IR,SEM,BET-BJH methods.The results show that the adsorption amount of Congo red by mesoporous γ-AlOOH adsorbent can reach 586.78 mg/g and the removal rate is 97.80% under the conditions of temperature of 25 ℃,adsorbent dosage of 100 mg,Congo red mass concentration of 300 mg/L,adsorption time of 180 min and pH=4.The adsorption process is more consistent with the pseudo-second-order kinetic model and the Langmuir isothermal adsorption model.The saturated adsorption capacity of mesoporous γ-AlOOH on Congo red is 1 965.265 mg/g at room temperature,and the adsorption process is spontaneous,heat absorption and chaotic.The main adsorption mechanism is the formation of hydrogen bonding between the adsorbent and adsorbate.

direct aging-ammonium salt substitution combined method  /  synthesization  /  adsorbent  /  γ-AlOOH  /  Congo red  /  adsorption
Wenquan LI, Zhonglin LI, Kecheng SHANG, Ting ZOU, Guixiang HE, Yibing LI. Synthesis of Mesoporous γ-AlOOH Absorbent Via Direct Aging-Ammonium Salt Substitution Combined Method and Its Adsorption Properties for Congo Red[J]. Hydrometallurgy of China, 2025 , 44 (4) : 503 -511 . DOI: 10.13355/j.cnki.sfyj.2025.04.010
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Year 2025 volume 44 Issue 4
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doi: 10.13355/j.cnki.sfyj.2025.04.010
  • Receive Date：2024-07-31
  • Online Date：2025-09-09
  • Published：2025-08-20
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  • Received：2024-07-31
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Affiliations
    1 Department of Materials Science and Engineering,Guilin University of Technology,Guilin 541004,China
    2 Key Laboratory of New Processing Technology for Nonferrous Metals and Materials,Ministry of Education,Guilin University of Technology,Guilin 541004,China
    3 Department of Metallurgical and Resources Engineering,Guilin University of Technology (Nanning Campus),Nanning 530000,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
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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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