Phosphorus recovery by mesoporous structure material from wastewater.
This study was designed to investigate the fundamental aspects of a possible removal of phosphorous from wastewater by using the mesoporous structure materials for wastewater reuse. The zirconium sulphate with mesoporous structure as a new type of ion exchangers was synthesised by hydrothermal reaction. From the results of X-ray diffraction and transmission electron microscope, it was discovered that the synthesised material had hexagonal mesoporous structure with a pore size of approximately 40-50A. Experimental results showed that the zirconium sulphate with mesoporous structure had very high sorption capacity for the phosphorus. The novel ion exchange occurred between PO4(3-) and SO4(2-), OH-. The amount of phosphate ions exchanged into the solid was as great as 3.4 mmol/g-ZS. Furthermore, it is possible to obtain a higher removal efficiency than other ion exchange media and adsorbents.
Lee
S H
SH
Water Environment & Remediation Center, Korea Institute of Science & Technology, Cheongryang, Seoul 130-650, Korea. yisanghyup@kist.re.kr
Lee
B C
BC
Lee
K W
KW
Lee
S H
SH
Choi
Y S
YS
Park
K Y
KY
Iwamoto
M
M
D000327:Adsorption; D052918:Environmental Restoration and Remediation; D007474:Ion Exchange; D010758:Phosphorus / Q000302:isolation & purification*; D016062:Porosity; D013431:Sulfates / Q000737:chemistry*; D013499:Surface Properties; D014865:Waste Disposal, Fluid; D014867:Water / Q000737:chemistry; D018508:Water Purification / Q000379:methods*; D014961:X-Ray Diffraction; D015040:Zirconium / Q000737:chemistry*
D013431:Sulfates; D014867:Water; D010758:Phosphorus; D015040:Zirconium