The components of swine wastewater were measured according to the standard methods described in APHA (1998). The concentrations of TAN and PT in the effluent were determined using Nessler’sreagent spectrophotometry and Mo–Sb Antispectrophotometry,respectively. The metal cations of the swine wastewater were analyzed by an atomic adsorption photometer (AA-6800; Shimadzu,Japan). The composition of the struvite mixture before and after pyrogenation was characterized by an X-ray diffraction analyzer(XRD; DMAX-RB; Rigaku, Japan) and a Fourier transform infrared spectroscope (FTIR; NEXUS870, USA), and their crystal morphologies were observed by a scanning electron microscope (SEM; SUPRA55 SAPPHIRE; Germany). All tests were performed in triplicate, and their average data were reported.
The components of swine wastewater were measured according to the standard methods described in APHA (1998). The concentrations of TAN and PT in the effluent were determined using Nessler’sreagent spectrophotometry and Mo–Sb Antispectrophotometry,respectively. The metal cations of the swine wastewater were analyzed by an atomic adsorption photometer (AA-6800; Shimadzu,Japan). The composition of the struvite mixture before and after pyrogenation was characterized by an X-ray diffraction analyzer(XRD; DMAX-RB; Rigaku, Japan) and a Fourier transform infrared spectroscope (FTIR; NEXUS870, USA), and their crystal morphologies were observed by a scanning electron microscope (SEM; SUPRA55 SAPPHIRE; Germany). All tests were performed in triplicate, and their average data were reported.
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