新型环保型抗结垢剂,用于主要无机结垢控制:实验室测试和中试反渗透装置放大

IF 3.1 4区 环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL
Saad S. M. Hassan, Mohamed Sobhi and Belal N. Mahran
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引用次数: 0

摘要

生态友好型抗菌剂已经获得了相当大的兴趣,特别是关于其结构发展和性能评估。本研究合成了聚天冬氨酸(PASP)及其衍生物聚天冬氨酸- 2氨基乙烷磺酸(PASP - sea)。为了进行比较分析,使用了另外两种绿色抗菌剂:羧甲基纤维素钠(CMC)和柠檬酸-柠檬酸钠(CA-SC)混合物。通过静态试验评价PASP、PASP - sea、CMC和CA-SC的抑菌率(IE, %)。从盐水反渗透装置中提取了盐水溶液。在pH 8.2和LSI为2.9时,PASP、PASP - sea、CMC和CA-SC的最佳剂量分别为1、0.25、0.5和5 ppm。在抗垢剂浓度为1 ppm、pH为7.07时,IE值依次为PASP - sea >; PASP > CMC > CA-SC,分别为94%、100%、38%和29%。随着离子强度(I)的增加,所有抗垢剂的性能都有所改善。使用中试RO装置对抗垢剂进行了动态测试,结果表明PASP-SEA的结垢率显著降低。UV-vis光谱、FTIR光谱和GP/SEC分析证实了PASP-SEA的合成。虽然PASP - sea的可生物降解性略低于PASP,但其热稳定性优于PASP, XRD和SEM分析表明,PASP - sea的最佳性能是晶体变形最大。此外,还对每种抗垢剂进行了经济评价。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Novel eco-friendly antiscalant for major inorganic scaling control: laboratory tests and scale-up in a pilot RO unit†

Novel eco-friendly antiscalant for major inorganic scaling control: laboratory tests and scale-up in a pilot RO unit†

Eco-friendly antiscalants have garnered considerable interest, particularly regarding their structural development and performance assessment. In this study, polyaspartic acid (PASP) and a novel derivative, polyaspartic acid–2 amino ethane sulfonic acid (PASP–SEA), were synthesized. For comparative analysis, two additional green antiscalants were utilized: sodium carboxymethylcellulose (CMC) and a citric acid–sodium citrate (CA–SC) mixture. The inhibition efficiency (IE, %) of PASP, PASP–SEA, CMC, and CA–SC was evaluated through static tests. A saline solution was derived from a brine RO unit. The optimal doses determined at pH 8.2 and an LSI of 2.9 were 1, 0.25, 0.5, and 5 ppm for PASP, PASP–SEA, CMC, and CA–SC, respectively. At an antiscalant concentration of 1 ppm and pH 7.07, the IE was in the order PASP–SEA > PASP > CMC > CA–SC, with values of 94%, 100%, 38%, and 29%, respectively. All the antiscalants exhibited improved performance with increasing ionic strength (I). Dynamic tests were performed on the antiscalants using a pilot RO unit, revealing a significantly lower scaling rate for PASP–SEA. UV-vis spectroscopy, FTIR spectroscopy, and GP/SEC analyses confirmed PASP–SEA synthesis. While PASP–SEA was slightly less biodegradable than PASP, it exhibited superior thermal stability, and XRD and SEM analyses revealed its optimal performance with the highest crystalline deformation. Furthermore, an economic assessment of each antiscalant was conducted.

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来源期刊
Environmental Science: Water Research & Technology
Environmental Science: Water Research & Technology ENGINEERING, ENVIRONMENTALENVIRONMENTAL SC-ENVIRONMENTAL SCIENCES
CiteScore
8.60
自引率
4.00%
发文量
206
期刊介绍: Environmental Science: Water Research & Technology seeks to showcase high quality research about fundamental science, innovative technologies, and management practices that promote sustainable water.
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