RSC Advances
·
2016
·Vol. 6
·期 95
·92943-92952
·
IF 3.289
Henghui Huang,Qi Yao,Hualin Chen,Bailing Liu
In order to improve the scale inhibition efficiency of existing scale inhibitors for industrial water and to reduce the phosphorus pollution of water bodies, a new type of scale inhibitor with a hyper-branched structure has been developed in this study. First, an AB′ type of functional monomer (AMA) was synthesized from maleic anhydride (MAH) and propylene glycol, then copolymerized with monomer B (MAH) through radical polymerization, resulting in a hyper-branched polycarboxylic acid. The synthesis conditions, such as reaction temperature and time, monomer ratio and initiator dosage, have been investigated for obtaining the expected hyper-branched polymer with good scale inhibition performance. The scale inhibition efficiency of the obtained products was determined according to their resistance to the crystallization of calcium sulfate and calcium carbonate under the optimal application conditions. The experimental results show that the hyper-branched polycarboxylic acid provides a scale inhibiting efficiency for CaCO3 and CaSO4 as high as 95.2% and 92.3%, respectively. In addition, XRD analysis showed that the good scale inhibition of the hyper-branched polycarboxylic acid is attributed to its ability to inhibit and destroy the formation of crystals, changing the crystal forms of the calcium scale. This conclusion indicates that the prepared hyper-branched polycarboxylic acid has great application potential in the treatment of industrial water.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
APPLIED THERMAL ENGINEERING
·
2019
·
IF 4.026
Le-Tian Wang,Hong-Hua Ge,Yu-Tian Han,Chuan Wan,Jun-Yi Sha,Kun Sheng
The scale inhibition and mechanism of the scale inhibitor PBTCA (2-phosphonobutane-1,2,4-tricarboxylic acid) on CaCO 3 in a scale-forming solution and an Al 2 O 3 nanofluid were investigated by solution scale inhibition, surface scale inhibition, electrical conductivity, scanning electron microscopy, X-ray diffraction, and diffuse reflection Fourier transform infrared spectroscopy. The results showed that PBTCA had good solution scale inhibition performance and surface scale inhibition performance on heat exchange surface in scale-forming solution. In an Al 2 O 3 nanofluid, the solution scale inhibition performance of PBTCA decreased with an increase in nanoparticle concentration. However, the surface scale inhibition performance of PBTCA first decreased and then increased with an increase in Al 2 O 3 nanoparticle concentration, and the surface scale inhibition performance was obviously higher than the solution scale inhibition performance. Al 2 O 3 nanoparticles significantly shortened the induction period of CaCO 3 nucleation in the scale-forming solution containing PBTCA, weakening the solubilization of PBTCA on CaCO 3 and decreasing the solution scale inhibition of PBTCA, whereas Al 2 O 3 nanoparticles promoted the formation of aragonite and exhibited certain surface scale inhibition performances.
研究领域:
化学工程
·
材料科学
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Zheng Zhang,Shuai Tang,Kai Ge,Kangjun Wang,Yuanhui Ji
The scaling phenomenon poses a great challenge for industrial production because of its widespread presence and the complex scaling process. Hence, we report a novel terpolymer (PIA-SAS-AM) scale inhibitor with high efficiency to obstruct the formation of calcium sulfate. Furthermore, the scale inhibition performance and mechanism were further evaluated and systematically investigated. Herein, the various influence factors (monomer ratio, polymerization temperature, initiator content, etc.) on scale inhibition were discussed in detail. By various characterization methods, the terpolymer scale inhibitor was identified, consistent with the expected structure. Based on the static scale inhibition method, the performance of the copolymer on the control of the CSD (calcium sulfate dihydrate) scale was also explored under different external environments (copolymer concentration, retention temperature, calcium concentration, etc.). Especially, the scale inhibition efficiency of CSD reached nearly 100% when the concentration of the copolymer was 16 mg/L. Additionally, the prepared terpolymer scale inhibitor has great aqueous solubility, salt, and heat resistance. This work provides novel insights into inhibiting crystal scaling and offers further guidance on polymer scale inhibitor design.
研究领域:
材料科学
·
化学工程
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Xiaoyu Shi,Wei Chen,Xingzhao Ji,Hu Yang
A novel nonionic starch-based antiscalant (St- g -GMA) was designed and obtained by graft copolymerization of starch and glycidyl methacrylate (GMA). St- g -GMA not only achieved an obvious reduction of CaSO 4 scaling in static test, but also effectively mitigated the flux decrease in dynamic reverse osmosis (RO) system. This improvement is ascribed to the grafted poly(GMA) chains on St- g -GMA. A suitable grafting ratio of this starch-based antiscalant achieve a high performance cost in control of CaSO 4 scaling. Combination of the apparent antiscaling performance, observation under scanning electron microscopy, energy dispersive x-ray spectroscopy unit, x-ray diffraction pattern, conductivity measurement, and dispersion experiment, the scale-inhibition mechanism of St- g -GMA was investigated and mainly attributed to chelation, dispersion and lattice distortion effects. The oxygen-containing groups on poly(GMA) chains such as epoxy groups can chelate with Ca 2+ , causing the induction time of crystallization prolonged; St- g -GMA with the distinct branched chain configuration can well disperse the formed microcrystal of CaSO 4 . Moreover, molecular dynamics simulations confirmed that the grafted poly(GMA) chains well bind to the crystal surfaces and the oxygen-containing groups could even enter the crystal lattice to inhibit the crystal growth and change the morphologies. St- g -GMA still mitigated the flux decrease notably in treatment of a synthetic seawater during a 24-h RO measurement. This study provided an efficient, environmentally-friendly and low-cost antiscalant with high application potentials.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2016
·Vol. 28
·期 3
·367-372
·
IF 1.823
Zhenling Shen,Xin Zhi,Puyu Zhang
Polysuccinimide was synthesized from maleic anhydride and urea. A polyaspartic acid derivative (PASP-Try-SEA) was synthesized from the polysuccinimide with 2 -aminoethanesulfonic acid and tryptophan. The products were characterized by UV, FTIR, 1 H NMR, TGA and PL, respectively. The results showed that the fluorescent chromophore-indolyl groups were successfully incorporated into PASP. The relationship between the fluorescence intensity and the concentration of fluorescent polyaspartic acid (FPASP) is linear with the excitation wavelength of 366 nm and 422 nm. FPASP also showed excellent scale inhibition properties with a scale inhibition rate of 78% achieved for CaCO 3 with a dosage of 9 mg/L and a significantly enhanced scale inhibition effect for CaSO 4 , achieving an inhibition rate of 98%, which were determined using the static scale inhibition method. When FPASP was added to the solution, CaCO 3 and CaSO 4 deposits showed flower patterns with floppy accumulation by scanning electron microscopy. Copyright © 2016 John Wiley & Sons, Ltd.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING & TECHNOLOGY
·
2024
·Vol. 47
·期 10
·e202400203
·
IF 1.8
Jinwei Qi,Jihui Li,Kaili Liu,Huixin Zhang,Jian Han,Jianxin Chen
The curcumin-malic acid-aspartic acid polymer (PCMA) as a new water treatment agent was prepared by solid phase synthesis of curcumin, malic acid and aspartic acid. The static scale inhibition experiments showed that PCMA can inhibit CaCO 3 and CaSO 4 scale formation by 100.0 % and had excellent scale inhibition effect under various experimental conditions. The mechanism of action of PCMA was obtained by X-ray diffraction, scanning electron microscope and molecular dynamics simulation. Electrochemical test showed that PCMA is an anodic corrosion inhibitor that achieves 93.1 % corrosion inhibition by forming a protective film on the surface of Q235 carbon steel. Besides, fluorescence spectra proved that PCMA has stable fluorescence intensity.
研究领域:
材料科学
·
化学工程
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Energies
·
2024
·Vol. 17
·期 13
·3195
·
IF 3
WenLong Gao,LiWei Sun,Miao Li,XiAn Ye,QingChun Gao,DongLiang Kong,JunPu An,KuoBo Wang,Fan Yang
This paper focuses on the selection and application of scale inhibitor by studying the problem of pipeline scaling in geothermal well development. Adding scale inhibitor can effectively reduce the treatment cost and achieve a good scale resistance effect, but the commonly used polyaspartic acid scale inhibitor has problems such as poor scale inhibition effect and large use limitations. Therefore, a new modified polyaspartic acid scale inhibitor (His-Tyr-SA-PASP) was prepared using polysuccinimide (PSI) as the raw material and histidine (His), tyrosine (Tyr), and sulfonic acid (SA) as the modification reagent. When the dosage of His-Tyr-SA-PASP was 8 mg/L, the scale inhibition rate of CaCO3was 94.40%. In addition, the scale inhibition effect of His-Tyr-SA-PASP on CaCO3was better than that of PASP. At the same time, under the condition of a static experiment at 75 °C, according to the ion concentration of water samples in different scale zones, this paper also identified the ratio of four composite scale inhibitors. When the dosage of compound scale inhibitor was 100 mg/L, Sodium of Polyaspartic Acid–Diethylene Triamine Penta (Methylene Phosphonic Acid)–2-Phosphonobutane-1,2,4-Tricarboxylic Acid–Amino Trimethylene Phosphonic Acid–Copolymer of Maleic and Acrylic Acid = (10:10:5:1:9), (15:10:5:2.5:2.5), (12.5:5:10:1:6.5), and (15:5:10:4:1) and the scale inhibition rate was more than 95%. Under the condition of a dynamic experiment, the optimized composite scale inhibitor still showed a scale inhibition rate of more than 90%. It provides a useful reference for the practical application of water treatment in geothermal wells and has the prospect of industrial application.
研究领域:
化学工程
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2019
·Vol. 19
·期 6
·3471-3478
·
IF 1.093
Wang Feng,Ge Hong-Hua,Wu Kai,Wang Le-Tian,Wan Chuan,Sha Jun-Yi,Zhao Yu-Zeng
The effects of Al2O3 nanoparticles on the precipitation behavior of CaCO3 and on the anti-scale performance of 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) in CaCO3 growth solution were studied by means of solution analysis, gravimetric
methods, scanning electron microscopy, Fourier transform infrared spectroscopy and X-ray diffraction. The results illustrate that Al2O3 nanoparticles had little effect on the concentration of calcium ions in the test solution without PBTCA, but significantly changed the
form and morphology of calcium carbonate crystals, which were transformed from calcite to aragonite. As a commonly used and effective scale inhibitor, PBTCA showed good Ca2+ retention ability in the test solution, distorting the calcite crystal lattice and promoting the formation
of vaterite. When Al2O3 nanoparticles co-existed with PBTCA in the test solution, calcium carbonate was more likely to precipitate, and the Ca2+ retention ability of PBTCA reduced. A newly designed gravimetric method was used to evaluate the scale inhibition
performance of Al2O3 nanoparticles on the heat exchange surface. When the concentration of Al2O3 nanoparticles reached 1 g/L, the surface scale inhibition efficiency of Al2O3 nanoparticles exceeded 80%.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2021
·
IF 5.161
Shupei Liu,Chijia Wang,Kaka Li,Zihua Wang,Hongxin Luo,Weihao Fan,Huaiyuan Wang
Anti-scaling is a key challenge in various industrial productions. The use of coatings is the most effective strategy for protecting metal equipment. An excellent scale inhibitor is 1-hydroxy ethylidene-1, 1-diphosphate (etidronic acid) (HEDP), which is usually incorporated into wastewater and discharged directly with the water flow. In this study, HEDP was coated with poly-α-ethyl cyanoacrylate (PEC) by a simple spray method. The corresponding slow-release microcapsules, which we named PEC&HEDP, were successfully prepared. In addition, a correct mass of the microcapsules was added to the spray polyurea elastomer (SPUA) coating. The resulting SPUA/PEC&HEDP 70&30 composite coating exhibited excellent anti-corrosion and scale-inhibiting effects. Electrochemical impedance spectroscopy and salt spray corrosion test were used to assess the corrosion resistance of the coating. The results showed that the barrier performance of the composite coating improved significantly. In addition, the scale inhibition performance of the composite coating was tested in a supersaturated CaCO 3 solution. The results showed that the scale inhibition rate of the composite coating was higher by as much as 80.5% relative to the pure SPUA coating. This work provides a new and simple method for designing and preparing a slow-release microcapsule composite coating intended for scale control.
研究领域:
材料科学
·
腐蚀与防护
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
PETROLEUM SCIENCE AND TECHNOLOGY
·
2022
·
IF 1.695
Kaixiang Cui,Yufei Xia,Linlin Tian,Shuai Wang,Yongyao He
In order to enhance oil recovery, supercritical CO2 (scCO2) flooding has been applied in many oilfields to extract oil and gas post primary recovery. However, it causes serious scaling problems in the reservoir, oil well and production tubing. In this article, the produced water quality before and after scCO2 flooding in carbonate reservoirs are analyzed. The scaling trend of produced water before and after scCO2 flooding was calculated by using the Davis-stiff saturation index and Ryznar stability index methods. Static experiments and scanning electron microscope (SEM) are used to study the scale inhibition performance and mechanism of HEDP, ATMP, MA-AA, and PAA on CaCO3 in produced water before and after scCO2 flooding. The results show that after scCO2 flooding, the quality of produced water changes obviously, thus the scaling trend of produced water increases, the growth of CaCO3 crystal is affected and the scale inhibition efficiency of conventional scale inhibitors decreases.
研究领域:
石油工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Rongxin Zhao,Hengtong Xia,Shaojie Gong,Jiawei Yang,Jie Wang,Xiaoshuang Yin,Ying Liu,Wenzhong Yang,Hui Xu
This study presents a green scale inhibitor design paradigm through the precision synthesis of β-cyclodextrin-grafted poly (tert-butyl acrylate) (P t BA) star polymers via atom transfer radical polymerization (ATRP), followed by hydrolysis to yield poly (acrylic acid) (β-CD-PAA). Structural characterization by FTIR 1 H NMR and GPC confirmed well-defined architectures with tunable PAA arm lengths ( Mₙ = 12–58 kDa, Đ = 1.05–1.15). The star topology demonstrated exceptional dual functionality: (1) Scale inhibition – achieving 86.36 % CaCO 3 inhibition at 55 mg/L and 96.87 % CaSO 4 inhibition at 6 mg/L, outperforming linear polyacrylic acid by 15–32 % efficiency; (2) Scale dissolution – maintaining excellent conductivity recovery via colloidal stabilization. Systematic evaluation revealed robust performance across harsh conditions (pH 4–12, 60–90 °C). Multiscale characterizations (i.e., SEM, XRD) unveiled a dual mechanism: multidentate Ca 2+ chelation and 3D steric hindrance that distorted crystal nuclei and promoted metastable vaterite formation. This work establishes star-shaped polysaccharide derivatives as next-generation scale inhibitors, offering a sustainable alternative to phosphorus-based inhibitors while advancing molecular-level understanding of topology-dependent scaling control.
研究领域:
高分子化学
·
材料科学
·
环境科学
·
化学工程
·
表面科学
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
·
2024
·
IF 8.3
Xinyuan Yi,Shumin Yang,Xin He,Zhiwei Wang,Min Rui,Yulin Tang
The addition of scale inhibitors is one of the effective methods to alleviate membrane fouling on nanofiltration (NF). In this study, two effective poly-epoxysuccinic acid-based scale inhibitors, namely, valine-poly-epoxysuccinic acid (Val-PESA) and histidine-poly-epoxysuccinic acid (His-PESA), were synthesized by grafting copolymerization . Results showed that Val-PESA and His-PESA could significantly retard the formation of CaSO 4 scaling and effectively mitigate membrane fouling . His-PESA had a better scale inhibition effect on CaSO 4 compared to Val-PESA. The inhibition efficiency was maintained at 96.0 % after 20 h operation for Val-PESA and His-PESA. In addition, the inhibition performance of Val-PESA and His-PESA in the batch test was basically the same as in the NF process. Combining the results of the inhibition tests and the relevant characterizations by scanning electron microscopy, X-ray photoelectron spectroscopy, and X-ray diffraction, the scale inhibition mechanism was mainly ascribed to enhanced chelation, dispersion and lattice distortion effect. This study sheds light on the designing of novel and efficient scale inhibitors for NF processes.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）