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Adsorption of yttrium /zirconium bimetallic organic frameworks on organic phosphonate scale inhibitor HEDP
A new yttrium zirconium bimetallic organic framework（YZr-MOF） adsorption material was synthesized by solvothermal method for the first time，and the structure and surface properties of adsorbents were characterized. Adsorption behavior and properties on organic phosphonate scale inhibitor 1-hydroxyethylidene-1，1-diphosphonic acid（HEDP） were investigated. Experimental results indicated that the structure of MOFs presented spherical particles of uniform size. The specific surface area of the adsorbent was 912.862 m2/g. At 298 K，the theoretical maximum adsorption capacity of YZr-MOF was 66.293 mg/g（calculated in P）. The adsorption process was fitted well with the pseudo-second-order kinetics equation and the Langmuir model. Moreover，the adsorption process was an endothermic process. The temperature rise was conducive to YZr-MOF adsorption of HEDP. In the adsorption experiments，the optimal amount of YZr-MOF was 0.2 g/L. YZr-MOF had good stability over a wide pH range and maintained a significant adsorption rate after six cycles. Combined with the relevant experiments and the characterization results of FTIR and XPS，electrostatic interaction and ligand exchange were the main adsorption mechanisms.
Adsorption of yttrium /zirconium bimetallic organic frameworks on organic phosphonate scale inhibitor HEDP
A new yttrium zirconium bimetallic organic framework（YZr-MOF） adsorption material was synthesized by solvothermal method for the first time，and the structure and surface properties of adsorbents were characterized. Adsorption behavior and properties on organic phosphonate scale inhibitor 1-hydroxyethylidene-1，1-diphosphonic acid（HEDP） were investigated. Experimental results indicated that the structure of MOFs presented spherical particles of uniform size. The specific surface area of the adsorbent was 912.862 m2/g. At 298 K，the theoretical maximum adsorption capacity of YZr-MOF was 66.293 mg/g（calculated in P）. The adsorption process was fitted well with the pseudo-second-order kinetics equation and the Langmuir model. Moreover，the adsorption process was an endothermic process. The temperature rise was conducive to YZr-MOF adsorption of HEDP. In the adsorption experiments，the optimal amount of YZr-MOF was 0.2 g/L. YZr-MOF had good stability over a wide pH range and maintained a significant adsorption rate after six cycles. Combined with the relevant experiments and the characterization results of FTIR and XPS，electrostatic interaction and ligand exchange were the main adsorption mechanisms.
Adsorption of yttrium /zirconium bimetallic organic frameworks on organic phosphonate scale inhibitor HEDP
LIU Dengke (author) / YANG Qingfeng (author) / LIU Yangqiao (author)
2024
Article (Journal)
Electronic Resource
Unknown
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