Table 2.

Infrared characteristic absorption peaks of CaOx crystals formed in the presence of different concentrations of TPSs.

TPSs	c(TPS) (g/L)	COD (%)	a νs(COO−) (cm−1)	ν as(COO−) (cm−1)	ν s(COO−) (cm−1)	COM (cm−1)	COD (cm−1)	COM (cm−1)	COM (cm−1)	COM (cm−1)	COD (cm−1)
Blank	0	0		1617	1325	942		879	781	657
TPS0	0.1	0		1617	1329	950		878	786	651
	0.15	0		1618	1329	950		878	786	654
	0.3	0		1619	1332	953		884	786	655
	0.5	0		1621	1332	953		883	786	666
	0.8	0		1627	1334	959		888	792	673
TPS1	0.1	73	1639		1323		912		786		620
	0.15	84.8	1640		1333		912		786		621
	0.3	100	1645		1334		912				625
	0.5	100	1647		1334		916				625
	0.8	100	1650		1340		917				620
TPS2	0.1	80	1639		1323		917		769		620
	0.15	87	1645		1334		923		780		625
	0.3	100	1646		1337		917				625
	0.5	100	1647		1340		917				616
	0.8	100	1651		1342		918				616
TPS3	0.1	31		1620	1321			885	785	670	618
	0.15	79		1629	1327		912		790		622
	0.3	100	1639		1332		915				616
	0.5	100	1643		1334		916				612
	0.8	100	1646		1335		918				612
COM				1621	1325	947		885	780	663
COD			1647		1326		916				618