| Content Provider |
World Health Organization (WHO)-Global Index Medicus |
| Author |
Han, Fei Guo, Jie Liu, Ling Wei, Qin Ai, Lijie Wang, Xiaodong Fang, Lulu Du, Bin Wei, Dong Li, Lusheng Li, Mengting |
| Description |
Author Affiliation: Wei D ( School of Resources and Environmental Sciences, University of Jinan, Jinan 250022, PR China); Li M ( School of Resources and Environmental Sciences, University of Jinan, Jinan 250022, PR China.); Wang X ( School of Resources and Environmental Sciences, University of Jinan, Jinan 250022, PR China); Han F ( School of Resources and Environmental Sciences, University of Jinan, Jinan 250022, PR China.); Li L ( School of Resources and Environmental Sciences, University of Jinan, Jinan 250022, PR China.); Guo J ( School of Resources and Environmental Sciences, University of Jinan, Jinan 250022, PR China.); Ai L ( School of Resources and Environmental Sciences, University of Jinan, Jinan 250022, PR China.); Fang L ( School of Resources and Environmental Sciences, University of Jinan, Jinan 250022, PR China.); Liu L ( School of Resources and Environmental Sciences, University of Jinan, Jinan 250022, PR China.); Du B ( School of Resources and Environmental Sciences, University of Jinan, Jinan 250022, PR China. Electronic address: dubin61@gmail.com.); Wei Q ( Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China.) |
| Abstract |
The aim of this study was to evaluate the interaction between extracellular polymeric substances (EPS) and Zn (II) during the sorption process of Zn (II) onto aerobic granular sludge. Batch results showed that the adsorption rate of Zn (II) onto aerobic granular sludge was better fitted with pseudo-second order kinetics model, and the adsorption isotherm data agreed well with Freundlich equation. Extracellular polymeric substances (EPS) for Zn (II) binding during sorption process was investigated by using a combination of three-dimensional excitation-emission matrix (3D-EEM), synchronous fluorescence spectra, two-dimensional correlation spectroscopy (2D-COS) and Fourier transform infrared spectroscopy (FTIR). Results implied that the main composes of EPS, including polysaccharide (PS) and protein (PN), decreased from 5.92±0.13 and 23.55±0.76 mg/g SS to 4.11±0.09 and 9.55±0.68 mg/g SS after the addition of different doses of Zn (II). 3D-EEM showed that the intensities of PN-like substances and humic-like substances were obviously decreased during the sorption process. According to synchronous fluorescence spectra, the quenching mechanism between PN-like substances and Zn (II) was mainly caused by a static quenching process. Additionally, 2D-COS indicated that PN-like substances were more susceptible to Zn (II) binding than humic-like substances. It was also found that the main functional groups for complexation of Zn (II) and EPS were OH groups, N-H groups and C=O stretching vibration. The findings of this study are significant to reveal the fate of heavy metal during its sorption process onto aerobic granular sludge through EPS binding, and provide useful information on the interaction between EPS and heavy metal. |
| ISSN |
03043894 |
| Volume Number |
301 |
| e-ISSN |
18733336 |
| Journal |
Journal of Hazardous Materials |
| Language |
English |
| Publisher |
Elsevier |
| Publisher Date |
2016-01-15 |
| Publisher Place |
Netherlands |
| Access Restriction |
One Nation One Subscription (ONOS) |
| Subject Keyword |
Biopolymers Chemistry Sewage Water Pollutants, Chemical Zinc Adsorption Aerobiosis Bioreactors Waste Disposal, Fluid Methods Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science Discipline Environmental Chemistry |
| Content Type |
Text |
| Resource Type |
Article |
| Subject |
Environmental Chemistry Pollution Waste Management and Disposal Health, Toxicology and Mutagenesis Environmental Engineering |
