A novel biosorbent for dye removal: extracellular polymeric substance (EPS) of Proteus mirabilis TJ-1

Journal of Hazardous Materials
Zhiqiang ZhangDidier Leonard

Abstract

This paper deals with the extracellular polymeric substance (EPS) of Proteus mirabilis TJ-1 used as a novel biosorbent to remove dye from aqueous solution in batch systems. As a widely used and hazardous dye, basic blue 54 (BB54) was chosen as the model dye to examine the adsorption performance of the EPS. The effects of pH, initial dye concentration, contact time and temperature on the sorption of BB54 to the EPS were examined. At various initial dye concentrations (50-400 mg/L), the batch sorption equilibrium can be obtained in only 5 min. Kinetic studies suggested that the sorption followed the internal transport mechanism. According to the Langmuir model, the maximum BB54 uptake of 2.005 g/g was obtained. Chemical analysis of the EPS indicated the presence of protein (30.9%, w/w) and acid polysaccharide (63.1%, w/w). Scanning electron microscopy (SEM) images showed that the EPS with a crystal-linear structure was whole enwrapped by adsorbed dye molecules. FTIR spectrum result revealed the presence of adsorbing groups such as carboxyl, hydroxyl and amino groups in the EPS. High-molecular weight of the EPS with more binding-sites and stronger van der Waals forces together with its specific construct leads to the excellent per...Continue Reading

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Citations

Jun 12, 2012·Environmental Science and Pollution Research International·Emine Sayilgan, Ozgur Cakmakci
Sep 13, 2013·Environmental Science and Pollution Research International·Zhiqiang ZhangSiqing Xia
Jun 1, 2014·Environmental Science and Pollution Research International·Zhiqiang ZhangSiqing Xia
Jan 20, 2016·Environmental Science and Pollution Research International·Chunyun JiaZongqiang Gong
Oct 2, 2012·Journal of Hazardous Materials·Yan JiangGuoxu Chen
Feb 7, 2012·Journal of Hazardous Materials·Aleksandra R NesicDusan G Antonovic
Aug 4, 2009·Journal of Hazardous Materials·Xiaogang Luo, Lina Zhang
Jun 8, 2014·Journal of Environmental Management·T T MoreR Y Surampalli
Sep 5, 2012·Carbohydrate Polymers·V JanakiSeralathan Kamala-Kannan
Mar 14, 2019·Scientific Reports·Manish KumarIndu Shekhar Thakur
Feb 6, 2021·International Journal of Biological Macromolecules·Narges SalariMahsa Motamedi
Jan 10, 2018·International Journal of Food Microbiology·Emanuele ZanniniElke K Arendt
Apr 3, 2021·Journal of Environmental Management·T SiddharthR D Tyagi

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