ORIGINAL RESEARCH
Adsorption Performance on Sediment Nutrients
by Different Proportions of Zeolite
and Shale Ceramsite (ZSC)
More details
Hide details
1
Central and Southern China Municipal Engineering Design & Research Institute Co., Ltd., Wuhan, China
Submission date: 2019-05-13
Final revision date: 2019-07-01
Acceptance date: 2019-07-24
Online publication date: 2020-02-26
Publication date: 2020-03-31
Corresponding author
Xiangrong Liu
Central and Southern China Municipal Engineering Design & Research Institute Co., Ltd., China
Pol. J. Environ. Stud. 2020;29(3):2365-2372
KEYWORDS
TOPICS
ABSTRACT
Sediment capping is an effective way to control internal pollution sources in eutrophic water.
However, there is a lack of research on absorption of sediment nutrients – especially both nitrogen and
phosphorus – by materials that are low-cost to be utilized in engineering. In this study, zeolite and shale
ceramsite (ZSC) were selected to explore their adsorption performance on sediment nutrients. And the
morphology and microstructure of ZSC were characterized by scanning electron microscope (SEM),
X-ray fluorescence (XRF), Fourier transform infrared (FTIR) and X-ray diffraction (XRD). Results
showed that the optimal proportion of ZSC on sediment nutrients adsorption was 2:1. The removal rates
of sediment nutrients did not increase with the increasing dosage of ZSC, and optimal dosage of ZSC
was 5 g with 5 g sediments. And the adsorption performance by the ZSC on sediment nutrients was
mainly on total phosphorus (TP), total nitrogen (TN) and ammonia nitrogen (NH4+-N). The adsorption
mechanism analysis found that ZSC adsorbed sediment nitrogen and phosphorus mainly by physical
adsorption and nonspecific chemisorptions. These results indicated that ZSC can be further used to
control and reduce sediment nutrients in eutrophic water.