Landfill Leachates Treatment by H₂O₂/UV, O₃/H₂O₂, Modified Fenton, and Modified Photo-Fenton Methods

Table 2

Main compounds detected in raw leachates and after Fenton process and the corresponding degree of removal.

Compounds	Preliminary; coagulation (%)	Fenton (15 min) (%)	Fenton (30 min) (%)
Bicyclo[2.2.1]heptan-2-one, 5,5,6-trimethyl-	61	99	n.d.
Cyclopentane, 1-methyl-1-(2-methyl-2-propenyl)-	66	99	n.d.
Benzenemethanol, 4-trimethyl-	53	n.d.	n.d.
Phenol, m-tert-butyl-	45	n.d.	n.d.
Phenol, 2,3,5,6-tetramethyl-	45	n.d.	n.d.
3,4-undecadiene-2,10-dione, 6,6-dimethyl-	50	n.d.	n.d.
o-Hydroxybiphenyl	55	n.d.	n.d.
Benzophenone	50	n.d.	n.d.
2-Cyclopropen-1-one, 2,3-diphenyl-	64	n.d.	n.d.
Phenanthrene, 1-methyl-7-(1-methylethyl)-	81	n.d.	n.d.
Phthalate, di-butyl	26	30	30
Phthalate, di-isooctyl	50	56	60
Aliphatic hydrocarbons C26–C40	70–80	90–95	n.d.
2,4,6 (1H,3H,5H)-pyrimidinetrione, 5-ethyl-5-(3-methylbutyl)-1,3-bis(trimethylsilyl)	80–90	95	n.d.
1,3,5,7,9-Penthaethylbicyclo[5,3,1] pentasiloxane	50	70	90
Benzeneacetic acid, alpha,3,4-tris[(trimethylsilyl)oxy]-methyl ester	90	n.d.	n.d.
Ent-3a,10-dihydroxy-13-iodomethyl-16-oxo-8,13-epi-17,20-dinogibberell-1	90	n.d.	n.d.
3,4-Dihydroxymandelic acid, ethyl ester, tri-TMS	89	97	98
2H-1,4-Benzodiazepin-2-one, 7-chloro-1,3-dihydro-5-phenyl-1-(trimethylsilyl)	50	n.d.	n.d