Energies
·
2024
·Vol. 17
·期 13
·3195
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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
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材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
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
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环境科学
✓ 已验证
DOI
高影响因子
PETROLEUM SCIENCE AND TECHNOLOGY
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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
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Zhiyang Cheng,Xia Meng,Yating Wang,Fangong Kong,Hui Jia,Jie Wang
Achieving accurate dosing of scale inhibitors in full reverse osmosis (RO) membrane systems for industrial applications is a critical challenge due to a lack of understanding of membrane fouling characteristics. To address this, this study investigated membrane performance at different inhibitor concentrations and proposed a method using ultrasonic phased arrays (UPA) to evaluate the fouling layer's spatial and density characteristics. The study also examined the relationship between fouling reversibility and compaction, and the results showed a clear conversion process from inhibition to exacerbation of membrane fouling by scale inhibitors. Additionally, the fouling layer distribution characteristics were opposite at different concentrations. At insufficient concentrations, the scaling layer forms near the outlet and spreads to the far-end with a continuously decreasing thickness. Conversely, at surplus concentrations, the opposite effect was observed. At sufficient concentrations, the fouling layer thickness and range exhibited a discontinuous distribution. The high-density layer was dominant on the membrane surface and showed low fouling reversibility. However, scale inhibitors were found to minimize fouling density by interfering with ion deposition, reducing the ion content and significantly increasing its reversibility. These findings have significant implications for scale inhibitor efficiency evaluation and scientific application, which can improve industrial membrane system performance.
研究领域:
环境科学
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化学工程
✓ 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
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 104
·102406-102412
·
IF 3.289
Shuchen Shi,Xiaowei Zhao,Qian Wang,Huiting Shan,Ying Xu
A novel scale and corrosion inhibitor, polyaspartic acid/furfurylamine graft copolymer (PASP/FA), was synthesized using maleic anhydride, urea, and furfurylamine (FA) as raw materials. The structure of PASP/FA was characterized by 1H NMR. PASP/FA exhibits excellent scale inhibition performance at low concentration, and its overall performance was significantly improved as compared with polyaspartic acid. The inhibition efficiency of PASP/FA was close to 100% against CaCO3 with 1 mg L−1 inhibitor at 80 °C and reached up to 100% against CaSO4 at 70 °C when dosage of the inhibitor was 5 mg L−1. The best inhibition efficiency against Ca3(PO4)2 at 80 °C was about 96% when the concentration of inhibitor was 10 mg L−1. The maximum corrosion inhibition efficiency at 45 °C was as high as 30%, when 16 mg L−1 of inhibitor was adopted. When the temperature was 50 °C and a pH = 9, the best dispersion capacity for Fe2O3 (according to 69% of transmittance) was reached when 48 mg L−1 of inhibitor was applied in the tested system. The structure and morphology of CaCO3 and CaSO4 were observed by scanning electron microscopy (SEM) and X-ray powder diffraction (XRD).
研究领域:
材料化学
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工业化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Saudi Chemical Society
·
2018
·
IF 2.456
Henghui Huang,Qi Yao,Qi Jiao,Bailing Liu,Hualin Chen
In order to improve the scale inhibition efficiency of existing polyepoxysuccinic acid (PESA) and to study the impact of their molecular structure on scale inhibition efficiency, a series of PESA with linear and hyper-branched structure have been designed and synthesized through co-polymerization reaction with glycidyl and epoxy succinate. The scale inhibition behavior of PESA with linear and hyper-branched structure against CaCO 3 and CaSO 4 scales was evaluated using static scale inhibition method, and their ability to retard deposition of CaCO 3 was also examined. The experimental results showed that, for CaCO 3 and CaSO 4 , the PESA with hyper-branched structure provides a scale inhibiting efficiency as high as 95.9% and 94.3%, respectively, at an inhibitor concentration of 15 mg/L. In addition, the processes of crystal nucleation, growth and crystal morphology have been analyzed. The experimental results show that the PESA with hyper-branched structure not only prolongs the induction period of CaCO 3 crystal nucleation, but also reduces the number of crystal nuclei and changes the size and morphology of the CaCO 3 crystal. Moreover, the FTIR, SEM and XRD analyses showed that the PESA with hyper-branched structure can induce the irregularity of growing CaCO 3 crystal, destroy the formation of crystals and change the polymorphs of calcium scale crystal. This conclusion indicates that the prepared PESA with hyper-branched structure has great potential for applying in the treatment of industrial water.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Jiayu Luo,Zhengshuo Zhan,Weiquan Li,Yang Lei
Electrochemical water softening, known for its chemical-free operation and modular design, offers a sustainable solution for cooling water management. However, the impact of antiscalants on the efficiency of electrochemical water softening remains poorly understood. Here we showed that even low concentrations (7.5 µM) of nitrilotris methylene phosphonic acid (NTMP), a representative antiscalant, significantly inhibit electrochemical softening efficiency while substantially increasing energy consumption. We propose a dual-benefit strategy integrating adsorption with electrochemically mediated precipitation to address this challenge in treating antiscalants-loaded cooling water. First, we probed the efficiency of iron-based adsorbents in mitigating NTMP under cooling water-relevant conditions. Our results show that bicarbonate hinders NTMP adsorption by altering the solution pH and the surface charge of the adsorbents. In contrast, hardness ions (Ca 2+ and Mg 2+ ) enhance NTMP adsorption by forming ternary complexes. Following adsorption, the subsequent electrochemical treatment achieves 83% calcium hardness removal at 20 A/m 2 with an energy consumption of 11.1 kWh/kg CaCO 3 in synthetic solutions. Notably, NTMP molecules desorbed from iron-based adsorbents retain their full anti-scaling capacity (100%), enabling recovery and reuse. This dual-function strategy mitigates antiscalant inhibition, enhances softening efficiency, and enables antiscalant recovery for reuse, advancing sustainable water treatment.
研究领域:
环境科学
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水处理技术
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL TECHNOLOGY
·
2018
·
IF 1.666
Ying Zhang,Hongquan Yin,Qingshan Zhang,Yunzheng Li,Pengjun Yao,Hongyu Huo
Polyaspartic acid is a green biodegradable antiscalant and widely applied in water treatment field. However, its scale inhibition efficiency is not prominent, especially for calcium orthophosphate. So we introduced acylamino and hydroxyl groups simultaneously to prepare a novel polyaspartic-acid derivative (PASPTU) with multifunctional groups by the reaction of polysuccinimide with threonine and urea. The graft copolymer was analyzed by using nuclear magnetic resonance, gel permeation chromatography, thermogravimetric analyzer and Fourier transform infrared spectroscopy. Its scale inhibition performance for calcium orthophosphate, calcium sulfate and calcium carbonate was evaluated. The findings showed that the scale inhibition rates of the graft copolymer reached up to 100% for calcium orthophosphate, 100% for calcium sulfate and 91% for calcium carbonate at certain dosages. The findings above showed that the copolymer had excellent scale inhibition efficiency for calcium salts in water treatment processes.
研究领域:
材料科学
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水处理技术
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环境工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DESALINATION
·
2024
·
IF 8.3
Lijun Gao,Tianming Gao,Jiuying Feng,Shaohong Mo,Yanbei Guo,Pingping Guo,Shiyun Pan,Yuqing Cheng,Qian Yang
Currently, antiscalants used in cooling water are expected to be environmental-friendly, good scale inhibitive, fluorescence tracing, and industrial-friendly. Aliphatic biodegradable photoluminescent polymers (BPLPs) synthesized from citric acid , aliphatic diols , and various amino acids are fluorescent polymers containing heteroatom six-membered conjugated ring chromophores . Their cross-linked BPLPs have potential for use as implant or device materials, and vivo bioimaging probes. However, so far, no one has found that BPLPs can be used as efficient antiscalants for cooling water. In this work, we demonstrate a facile one-pot microwave-assisted synthesis of BPLPs from cost-effective materials. The products were characterized by Fourier transforms infrared spectroscopy , 1 H and 13 C nuclear magnetic resonance spectroscopy , gel permeation chromatography , and fluorescence spectroscopy . Thus prepared BPLPs can be directly used as a novel type green fluorescent antiscalant without further purification. They have an excellent calcium phosphate inhibition efficiency that can reach 98.6 % with a dosage of 25 mg·L −1 in the static scale inhibition test at 80 °C.
研究领域:
材料科学
·
环境工程
·
工业应用
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
·
2025
·
IF 9.8
Hengtong Xia,Xiaoxin Hu,Wulong Zhang,Rumeng Du,Zhihao Chen,Hui Xu,Xiaoshuang Yin,Ying Liu,Yan Zhang,Wenzhong Yang
In high-temperature industrial water systems, developing environmentally friendly and efficient water treatment agents is crucial for inhibiting mineral scale formation and microbial contamination. In this study, a novel multifunctional water treatment agent, PASP-SQDs, was synthesized by modifying sulfur quantum dots (SQDs) with polyaspartic acid (PASP), endowing it with high-efficiency scale inhibition, antibacterial properties, and fluorescent tracing capabilities. The microstructure and spectral characteristics of PASP-SQDs were analyzed using X-ray photoelectron spectroscopy, high-resolution transmission electron microscopy, ultraviolet-visible spectroscopy, and fluorescence spectrophotometry. Notably, PASP-SQDs exhibited excellent fluorescence properties, enabling their use as a tracer for accurate dosing and real-time concentration monitoring of water treatment agents. This feature significantly enhances their practical applicability, allowing for intelligent and efficient water quality management. Static scale inhibition experiments were conducted to evaluate the inhibitory effects of PASP-SQDs on calcium carbonate (CaCO 3 ) and calcium sulfate (CaSO 4 ) scale formation, along with assessing their antibacterial performance. The results showed that PASP-SQDs significantly outperformed PASP alone, achieving scale inhibition rates of nearly 90 % for CaCO 3 (at 25 mg/L) and 98 % for CaSO 4 (at 0.6 mg/L). Additionally, at a concentration of 180 mg/L, PASP-SQDs exhibited an antibacterial efficiency exceeding 99 %, effectively preventing microbial contamination in water systems. The scale inhibition mechanism of PASP-SQDs was further investigated using X-ray diffraction, scanning electron microscopy, molecular dynamics simulations, and quantum chemical calculations. This study provides a comprehensive understanding of the working mechanism of PASP-SQDs, laying a solid theoretical and practical foundation for the development of next-generation, multifunctional, eco-friendly, and highly efficient water treatment agents.
研究领域:
环境科学
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材料科学
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工业水处理
✓ 已验证
产品关联
DOI
高影响因子
Journal of Water Process Engineering
·
2025
·
IF 6.7
Yuanyuan Wang,Chong Huang,Haixu Wu,Jeng Yi Chong,Ping Zhang
Mineral scaling poses major operational challenges in water-transporting systems across various industries, leading to substantial economic losses globally. Scale inhibitors are specialty chemical agents with functional groups to prevent or interfere with scale formation. Traditionally, scale inhibitors are introduced into water-transporting systems through continuous injection. However, this approach is limited by its short protection duration and reliance on continuous inhibitor injection, which results in high capital and operating costs, as well as increased chemical waste. To address this issue, this study synthesized cement-based controlled release beads (CRBs) loaded with 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) scale inhibitor for scale control. The release performance of HEDP from the CRBs was systematically evaluated through static batch and dynamic column experiments. Quartz crystal microbalance with dissipation monitoring (QCM-D) and turbidity tests confirmed the effectiveness of the CRBs in inhibiting BaSO 4 scale formation. Batch experiments demonstrated that increasing CRB size and lowering the temperature could reduce the release rate of HEDP while prolonging the release duration, without changing the total amount of HEDP released. Dynamic column experiments revealed that higher temperatures resulted in higher peak concentrations of HEDP and earlier peak occurrences, while increasing flow velocity shifted the release curves slightly backward and shortened the overall release time. The presence of Ca 2+ and HCO 3 − ions had no noticeable effect on the dynamic release behavior. These findings deepen our understanding of the release mechanisms of scale inhibitors from cement-based CRBs and highlight their potential as an innovative and sustainable solution for long-term scaling control in water-transporting systems.
研究领域:
水处理
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材料科学
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化学工程
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环境工程
✓ 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）