Environmental Science and Pollution Research

, Volume 26, Issue 31, pp 32397–32406 | Cite as

Preparation and flocculation properties of modified alginate amphiphilic polymeric nano-flocculants

  • Zhenle Tian
  • Liping Zhang
  • Caihua NiEmail author
Research Article


The novel nano-flocculants were synthesized through a conjugation of dodecylamine with partly oxidized sodium alginate. The structures of the flocculants were characterized by FTIR, 1HNMR, TGA, and EA. The flocculants possessed amphiphilic structures and formed nano-micelles through self-assembly in water. The nano-micelles showed rod-like shapes about 100 nm. Removal rates of the flocculants for Pb2+ and bisphenol A were determined under different conditions, showing the removal rates as high as 97.20% and 88.66% for Pb2+ and bisphenol A, respectively. The flocculation mechanisms were revealed by X-ray photoelectron spectroscopy (XPS) and scanning electron microscope (SEM), respectively. Isotherm adsorption studies indicated that the flocculation for Pb2+ accorded with the Langmuir single-layer adsorption model, and for bisphenol A accorded with the Freundlich multi-layer adsorption model. The quasi-second-order kinetic model was suitable for describing the adsorption kinetics. The new nano-flocculant was a promising agent for removing both heavy metal ions and organic pollutants of wastewater.


Nano-flocculants Modified alginate Flocculation Heavy metal ions Organic pollutants 


Funding information

This work was supported by the Natural Science Foundation of Jiangsu Province (BK20161128), MOE & SAFEA for the 111 Project (B13025), and Research Fund of Central University (JUSRP51626B).

Compliance with ethical standards

Competing interests

The authors declare that they have no conflict of interest.

Supplementary material

11356_2019_6308_MOESM1_ESM.docx (182 kb)
ESM 1 (DOCX 182 kb)


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material EngineeringJiangnan UniversityWuxiChina
  2. 2.Jiangsu Alphay Bio-technology Co. Ltd.NantongChina

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