1659-4266
1659-4266
S1659-42662018000200285
10.22458/urj.v10i2.1938
Nigeria
Nigeria
Nigeria
Nigeria
Nigeria
00
12
2018
00
12
2018
10
2
285
295
[
2007
3
5
5
577
]
[
2011
6
5
5
1045-58
]
[
2013
1
1
1
9
]
[
2012
2
4
4
150-63
]
[
2006
5
2053-7
]
[
2013
]
[
APHA
1998
]
[
2001
39
361-6
]
[
2007
2
11-6
]
[
2013
a
12
27
27
4206-20
]
[
2013
b
4
169-87
]
[
2016
4
156
]
[
1974
65
204-8
]
[
2003
579-612
]
[
CalRecovery
1982
]
[
1990
47
2123-36
]
[
2001
16
659-718.
]
[
CIOMS
1985
]
[
1996
50
27-33
]
[
1992
20
501-5
]
[
1971
31
87-96
]
[
2007
2
5
5
112-8
]
[
1997
50
1-25.
]
[
2013
]
[
European commission
2002
]
[
2003
534
65-75
]
[
FEPA
1991
]
[
1997
50
693-703
]
[
2015
22
1
1
]
[
2013
3
1
1
193-205
]
[
2002
32
4
4
297-336
]
[
2010
264
56-62
]
[
2001
87
31-6
]
[
1955
3
20-4
]
[
NESREA
2009
]
[
2008
2
4
4
391-400
]
[
1999
]
[
1995
18
321-36
]
[
2007
45
210-5
]
[
United States Environmental Protection Agency (USEPA)
1996
]
[
2002
517
221-9
]