Scale/corrosion inhibition and biodegradation of lysine modified polyaspartic acid

LIU Xinhua; ZHOU Kun; HAN Jie; CHEN Zhihui; LI Huijuan

doi:10.11949/j.issn.0438-1157.20171199

您当前的位置：

首页 >

文章列表页 >

Scale/corrosion inhibition and biodegradation of lysine modified polyaspartic acid

更新时间：2025-12-10

- Scale/corrosion inhibition and biodegradation of lysine modified polyaspartic acid
- CIESC Journal Issue 5, Pages: 2127-2136(2018)
- 作者机构：
  
  1. 唐山师范学院化学系,河北,唐山,063000
  2. 河北化工医药职业技术学院,河北,石家庄,050026
  3. 唐山市环境监测中心站,河北,唐山,063000
  4. 华北理工大学信息工程学院,河北,唐山,063000
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20171199
  CLC： Q085+.4
- Online First：05 May 2018，
  
  Published：05 May 2018
- 稿件说明：
移动端阅览
LIU Xinhua, ZHOU Kun, HAN Jie, et al. Scale/corrosion inhibition and biodegradation of lysine modified polyaspartic acid[J]. CIESC Journal, 2018, (5): 2127-2136.
DOI：

LIU Xinhua, ZHOU Kun, HAN Jie, et al. Scale/corrosion inhibition and biodegradation of lysine modified polyaspartic acid[J]. CIESC Journal, 2018, (5): 2127-2136. DOI： 10.11949/j.issn.0438-1157.20171199.

摘要

L-赖氨酸经过氨解反应合成一种改性聚天冬氨酸衍生物（Lys-PASP），用FTIR红外谱图证明了Lys-PASP分子中同时含有羧基和酰胺基等基团。扫描电子显微镜（SEM）的分析结果可知：Lys-PASP的加入使溶液中CaCO3和CaSO4的钙垢晶体的生长过程和形态发生变化，使得钙垢疏松、细小，抑制了它们长成致密结构的钙垢，从而达到很好的阻垢效果；Lys-PASP的加入使钙垢晶型变化，减缓了试片表面点蚀的发生；另外通过化学和物理的吸附作用在试片表面形成一层吸附膜而达到较好的缓蚀效果。探讨了Lys-PASP接枝聚合物对CaCO3和CaSO4垢的阻垢能力与Lys-PASP的投加量、Ca2+的浓度和测试体系的温度之间的密切联系。当Lys-PASP的投加量为10 mg·L-1时，对CaCO3的阻垢率为98.7%，对CaSO4阻垢率接近于100%，而在温度达到80℃、Ca2+分别达到500 mg·L-1和7000 mg·L-1的浓度时，Lys-PASP也表现出很好的阻垢效果。另外，用失重法研究了当Lys-PASP和PASP均为150 mg·L-1时，Lys-PASP的缓蚀率比PASP高13%；用摇床实验法证明了Lys-PASP属于易生物降解的物质。

Abstract

A poly-aspartic acid derivative (Lys-PASP) was synthesized by ammonia reaction of L-lysine. FTIR characterization of the polymer demonstrated that Lys-PASP contained carboxyl and amide groups. SEM study indicated that adding Lys-PASP changed growth process and morphology of CaCO3 and CaSO4 crystals such that loose and fine calcium scale could be formed

which prevented developing dense-structured calcium scale and achieved a good scale inhibition. The addition of Lys-PASP also caused lattice distortion of calcium scale crystals and inhibited surface pitting corrosion. Besides

a layer of adsorption film on surface by chemical and physical adsorption assisted to achieve a better corrosion inhibition effect. The scale inhibition efficiency of Lys-PASP graft copolymer to CaCO3 and CaSO4 was closely related to Lys-PASP dosage

Ca2+ concentration and system temperature. At 10 mg·L-1Lys-PASP

the CaCO3 scale inhibition efficiency was 98.7% and that of CaSO4 was close to 100%. Lys-PASP exhibited good scale inhibition at temperature 80℃and Ca2+ concentration at 500 mg·L-1 and 7000 mg·L-1. Furthermore

gravimetric study showed that corrosion inhibition efficiency of Lys-PASP is 13% higher than that of PASP when both Lys-PASP and PASP were 150 mg·L-1. Lys-PASP polymer is easily biodegradable per oscillating incubator study.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Photocatalytic degradation property of hemicellulose/TiO2 composite gel

Scale and corrosion inhibition performance of tobacco rob extract

Research on the characterization of the molecular weight and its distribution of perfluoropolyether

Preparation of C3N4/MIL-125 (Ti) composite and its performance in photocatalytic reduction of Cr (Ⅵ)

Degradation performance and mechanism of antibiotics in water by peracetic acid activated by Cu2O facets under sunlight

Related Author

SUN Xiaofeng

LI Chi

XIA Xiuyang

ZHOU Rui

WANG Yaxiong

FENG Yang

GUO Yong

WANG Hefang

Related Institution

Department of Applied Chemistry, Northwestern Polytechnical University

School of Chemical Engineering and Technology, Hebei University of Technology

CNOOC Tianjin Chemical Research & Design Institute

College of Chemical and Biological Engineering, Zhejiang University

ZJU-Hangzhou Global Scientific and Technological Innovation Center

⁰