Abstract:
:Phosphate is one of the main contaminations in water, so an effective method of decreasing or removing phosphate is needed. The main purpose of this paper is to synthesize CaFe-LDHs and MgFe-LDHs from the mixture of calcined dolomite and ferric chloride to remove orthophosphate and pyrophosphate. The study showed that removal of orthophosphate was attributed to the precipitation by Ca2+ and adsorption by MgFe-LDHs, where the former played a main role. As for pyrophosphate, it was mainly removed by precipitation at the initial pyrophosphate concentration ranging from 3.228 to 17.04 mmol/L. When the initial concentrations became relatively higher, the removal efficiency of pyrophosphate decreased because the complexation effects by Fe3+, Ca2+ and Mg2+ took place.
journal_name
Chemospherejournal_title
Chemosphereauthors
Xu Y,Hong H,Yang F,Zhang L,Xu J,Dou L,Hao Y,Qian G,Zhou Jdoi
10.1016/j.chemosphere.2019.07.018subject
Has Abstractpub_date
2019-11-01 00:00:00pages
1015-1021eissn
0045-6535issn
1879-1298pii
S0045-6535(19)31498-5journal_volume
235pub_type
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