数字农科院2.0

Adsorption behavior and mechanism of cadmium, copper, and lead on polylactic acid microplastics exposed to ultraviolet light

文献类型： 外文期刊

作者： Feng, Fang;Wang, Shutao;He, Xue;Wang, Xinghua;Huang, Jia;Liu, Guiming;Rong, Sashuang;Su, Shiming;Yan, Hongyuan;Han, Bing;Liu, Wei

作者机构：

关键词： Polylactic acid;UV aging;Adsorption;Mechanism

期刊名称： JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING

ISSN： 2213-2929

年卷期： 2025 年 13 卷 3 期

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： The environmental risk of microplastics (MPs) caused by degradable plastics is an emerging issue in which ultraviolet (UV) radiation plays an important role in affecting the ecological behavior of MPs. This study investigates how UV aging affects the modification of the structural properties of degradable polylactic acid (PLA) MPs and the adsorption-desorption behavior of cadmium (Cd(II)), copper (Cu(II)), and lead (Pb(II)) potentially toxic elements (PTEs) and concludes with a discussion of the adsorption mechanism. Characterization results show that UV aging enhances the specific surface area, electronegativity, oxygen-containing functional groups, and hydrophilicity of PLA. The adsorption experiments showed that the adsorption of Cd(II), Cu(II), and Pb(II) increased by 22.95 %, 17.31 %, and 26.76 % after aging. The pseudo-second-order kinetic and the Freundlich isotherm models could describe the adsorption process more accurately, suggesting that chemisorption and multilayer adsorption were dominant. In addition, environmental factors were also taken into account. There was a pH-dependent effect on the adsorption of Cd(II), Cu(II), and Pb(II), with the highest adsorption capacity at 6, 5.5, and 5. The competition and complexation of NaCl and fulvic acid with PTEs inhibited the adsorption. Analyzing the order of the chain rupture in the UV aging process and the change of functional group to discuss the mechanism of adsorption, showed that electrostatic and complexation plays a main role. This study contributes to the understanding of the UV aging behavior of PLA and its environmental risks.

分类号：

  • 相关文献

[1]Different La/Fe oxide composites for efficient phosphate removal from wastewater: Properties and mechanisms. Mengmeng Li,Yuan Luo,Di Zhao,Shangkai Qiu,Lisheng Zhang,Keqiang Zhang,Chun Song,Feng Wang. 2022

[2]ZIF-8 and humic acid modified magnetic corn stalk biochar: An efficient, magnetically stable, and eco-friendly adsorbent for imidacloprid and thiamethoxam removal. Yong Yang,Xinxin Ma,Zifen Li,Yanru Wang,Chao Ju,Lidong Cao,Yongquan Zheng,Qingming Zhang. 2023

[3]Adsorption of acetochlor-contaminated water systems using novel P-doped biochar: Effects, application, and mechanism. Wang W.,Wang P.,Wu C.,Zhang L.,Mao L.,Zhu L.,Jiang H.,Zheng Y.,Liu X.. 2024

[4]Efficient removal of phenanthrene by covalent organic frameworks: An experimental combined with theoretical analysis. Li S.-C.,Jin W.-L.,Jiang H.-X.,Zhang H.-X.,Kong D.-M.,Zhu L.-N.. 2024

[5]黄金梨黑心病形成机理及防控技术研究. 王文辉,王志华,佟伟,张志云,姜修成,贾晓辉. 2008

[6]Polylactic acid nanoparticles for co-delivery of dinotefuran and avermectin against pear tree pests with improved effective period and enhanced bioactivity. Changcheng An,Jianxia Cui,Qin Yu,Bingna Huang,Ningjun Li,Jiajun Jiang,Yue Shen,Chong Wang,Shenshan Zhan,Xiang Zhao,Xingye Li,Changjiao Sun,Bo Cui,Chunxin Wang,Fei Gao,Zhanghua Zeng,Haixin Cui,Runxiang Zhang,Yan Wang. 2022

[7]Friction And Wear Characteristics Of Polylactic Acid (Pla) For 3D Printing Under Reciprocating Sliding Condition. Zhang, P, Hu, ZC, Xie, HX, Lee, GH, Lee, CH. 2019

[8]Surface-modified polylactic acid nanospheres with chitosan for antibacterial activity of 1, 2-benzisothiazolin-3-one. Junwei Yao,Jingxia Liu,Heng Zhi,Hongbing Tao,Xiaobao Xie,Qingshan Shi. 2021

[9]Mechanical Properties of Polylactic Acid Nanofiber Films Reinforced by Modified Cellulose Nanocrystals. Zhu, Chaoqiao,Tian, Ming,Zhang, Dequan,Yang, Qingfeng,Wang, Debao,Fan, Simin,Li, Xin,Yang, Wei,Hou, Chengli. 2025

[10]Ultrasonic assisted electrospinning preparation the polylactic acid loading with perillaldehyde biopolymer film with excellent solvent resistance, water-oxygen barrierstability and preservation effect. Debao Wang,Xingyun Li,Zhiwei Zou,Bohui Wang,Duo Yao,Yunfei Han,Xinglong Zhang,Xiuli Liu. 2024

[11]Reduction of amylose/amylopectin ratio improves the molecular orientation and performance of three-dimensional-printed thermoplastic starch/polylactic acid intestinal stents. Qiannan Liu,Chao Bi,Honghai Hu,Zhenzhen Zhang,Bing Zhang. 2025

[12]Surface Polyphenol Coordination Drives Efficient Foliar Deposition of Pesticide Nanocarriers. Manli Yu,Bo Cui,Lidong Cao,Qiliang Huang,Junwei Yao,Zhanghua Zeng. 2025

[13]Transcriptome analyses of seed development in grape hybrids reveals a possible mechanism influencing seed size. Wang, Li,Hu, Xiaoyan,Jiao, Chen,Li, Zhi,Yan, Xiaoxiao,Wang, Yuejin,Wang, Xiping,Wang, Li,Hu, Xiaoyan,Li, Zhi,Yan, Xiaoxiao,Wang, Yuejin,Wang, Xiping,Jiao, Chen,Fei, Zhangjun,Liu, Chonghuai. 2016

[14]Enhanced removal of Microcystis aeruginosa in BDD-CF electrochemical system by simple addition of Fe2+. Long, Yujiao,Ni, Jinren,Li, Hongna,Xing, Xuan.

[15]Quantitative structure-toxicity relationship study of lethal concentration to tadpole (Bufo vulgaris formosus) for organophosphorous pesticides. Yan, Dongyun,Xu, Shaohui,Yan, Dongyun,Jiang, Xin,Bian, Yongrong,Yu, Guifen,Wang, Ligang.

[16]Inhibitory effect and mechanism of mesenchymal stem cells on liver cancer cells. Hou, Lingling,Wang, Xiaoyu,Zhou, Yaqiong,Ma, Haibin,Wang, Ziling,He, Jinsheng,Hu, Honggang,Guan, Weijun,Ma, Yuehui. 2014

[17]Rab3A is a new interacting partner of synaptotagmin I and may modulate synaptic membrane fusion through a competitive mechanism. Xie, Chunliang,Li, Jianglin,Guo, Tianyao,Yan, Yizhong,Tang, Cheng,Wang, Ying,Chen, Ping,Wang, Xianchun,Liang, Songping,Xie, Chunliang.

[18]Isolation and Identification of Potential Allelochemicals from Aerial Parts of Avena fatua L. and Their Allelopathic Effect on Wheat. Tian, Fajun,Tian, Yingying,Dong, Fengshou,Xu, Jun,Zheng, Yongquan,Tian, Fajun,Wu, Yanbing.

[19]Phosphomannose-isomerase (pmi) gene as a selectable marker for rice transformation via Agrobacterium. He, ZQ,Fu, YP,Si, HM,Hu, GC,Zhang, SH,Yu, YH,Sun, ZX.

[20]Analysis of differentially expressed proteins in zebrafish (Danio rerio) embryos exposed to chlorpyrifos. Liu, Lili,Xu, Yongxue,Xu, Lili,Wang, Jian,Wu, Wei,Xu, Lei,Yan, Yanchun,Xu, Yongxue. 2015

作者其他论文 更多>>