Synthesis of DHTA-Modified Poly(Epoxysuccinic Acid) and Scale Inhibition of Fluoride Scale.
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| Title: | Synthesis of DHTA-Modified Poly(Epoxysuccinic Acid) and Scale Inhibition of Fluoride Scale. |
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| Authors: | Zhang, Yihao1,2 (AUTHOR), Liu, Bo2,3 (AUTHOR), Zhu, Xiaolong1,2,3 (AUTHOR), Zhao, Chunxia3 (AUTHOR), Qin, Zhe3 (AUTHOR), Liu, Zixue3 (AUTHOR), Lu, Da3 (AUTHOR) hdluda@163.com |
| Source: | Materials (1996-1944). Oct2025, Vol. 18 Issue 20, p4701. 19p. |
| Subjects: | Calcium fluoride, Crystal growth, Crystallization kinetics, Reverse osmosis, Polymers, Membrane filter fouling |
| Abstract: | To alleviate CaF2 scaling on reverse osmosis membranes, polyepoxysuccinic acid (PESA) was modified with 2,5-dihydroxyterephthalic acid (DHTA) to obtain DHTA-PESA. Its structure and thermal stability were confirmed through characterization. Scale inhibition performance was evaluated using static and dynamic experiments. Results showed that in static tests, at a dosage of 200 mg/L, DHTA-PESA achieved a CaF2 scale inhibition rate of nearly 100%, demonstrating Ca2+ chelation ability and the capacity to prolong crystallization induction time. In dynamic experiments, indicating superior CaF2 dispersion performance and effective mitigation of membrane fouling. X-ray diffraction and scanning electron microscopy analysis revealed that DHTA-PESA induces irregular growth of CaF2 crystals, disrupting their formation and altering crystal morphology. The primary scale inhibition mechanisms include dispersion, lattice distortion, and chelation. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | To alleviate CaF2 scaling on reverse osmosis membranes, polyepoxysuccinic acid (PESA) was modified with 2,5-dihydroxyterephthalic acid (DHTA) to obtain DHTA-PESA. Its structure and thermal stability were confirmed through characterization. Scale inhibition performance was evaluated using static and dynamic experiments. Results showed that in static tests, at a dosage of 200 mg/L, DHTA-PESA achieved a CaF2 scale inhibition rate of nearly 100%, demonstrating Ca2+ chelation ability and the capacity to prolong crystallization induction time. In dynamic experiments, indicating superior CaF2 dispersion performance and effective mitigation of membrane fouling. X-ray diffraction and scanning electron microscopy analysis revealed that DHTA-PESA induces irregular growth of CaF2 crystals, disrupting their formation and altering crystal morphology. The primary scale inhibition mechanisms include dispersion, lattice distortion, and chelation. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 19961944 |
| DOI: | 10.3390/ma18204701 |
