8/12/2019 tentang fentn

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ACCELERATED BIOREMEDIATION OF PAH-CONTAMINATED SOILS BYPRETREATMENT WITH FENTON'S REAGENT

1Kenneth F. Rear!n an "She##e$ A. A##en

1,2Department of Chemical and Bioresource Engineering, Colorado State University, GloverRoom 1, !ort Collins, C" #$2%& 1'hone( )*+ -*1./$$, E.mail(reardon0engrcolostateedu& 2'hone( )*+ -*1.112%, E.mail( shelley0engrcolostateedu

Che%&a# !(&at&!n an )&!re%e&at&!n are t*! re%e&at&!n tehn&+,e !%%!n#$ ,e t! treat!nta%&nate !. B&!re%e&at&!n an )e an e!n!%&a##$ !,n %eth! ! treat&n/ ea$e/raa)#e !%0!,n. H!*eer2 %an$ 0!##,tant are n!t eet&e#$ e/rae )$ )&!re%e&at&!n.Che%&a# !(&at&!n2 !n the !ntrar$2 ,e,##$ e/rae !nta%&nant that are )&!#!/&a##$rea#&trant2 ),t & !n&era)#$ %!re e(0en&e than the )&!#!/&a# treat%ent. B$ !%)&n&n/ theet*! tehn!#!/&e2 a hea0er2 %!re eet&e %eth! h!,# re,#t. F!r the %!t eet&e!%)&nat&!n2 the !0t&%a# e(tent ! he%&a# !(&at&!n %,t )e !,n.

In a #a)!rat!r$-a#e 0r!3et2 ! !)ta&ne r!% t*! &erent &te *ere ,e t! t,$ the!%)&nat&!n ! he%&a# !(&at&!n an )&!re%e&at&!n. The 0r&%ar$ !nta%&nant &n thee !*ere 0!#$$#& ar!%at& h$r!ar)!n 4PAH5 an 0entah#!r!0hen!# 4PCP52 h!en )ea,e the$are )!th rea#&trant an ar&n!/en&. The 0e&& he%&a# !(&at&!n 0r!e ,t&6e &n th& t,$&n!#e the a&t&!n ! h$r!/en 0er!(&e a#!n/ *&th a Fent!n'-#&7e rea/ent. Th& %&(t,re *ae#ete )ea,e &t 0r!,e h$r!($# ree ra&a#2 *h&h hae an !(&&6&n/ 0!tent&a# e!n !n#$t! #,!r&ne. In !rer t! &tr&),te the rea/ent 0r!0er#$ &nt! the ! a M&r!enrat&!nat!r82e&/ne )$ H9H E! S$te%2 In.2 *a ,e. The M&r!enrat&!nat!r & eent&a##$ an e&&ent2ra0&2 an #ar/e-a#e %&(&n/ e&e. It n!t !n#$ %&(e the rea/ent h!%!/ene!,#$ &nt! the ! ),ta#! ereae the %a traner #&%&tat&!n )r!,/ht a)!,t )$ !r)e !nta%&nant. Th& ereae &n%a traner #&%&tat&!n &nreae the e/raat&!n rate )$ &nrea&n/ the aaa)&t$ ! the

!nta%&nant. One he%&a##$ !(&&6e an *e## %&(e2 the ! *a et a&e t! a##!* the&n&/en!, %&r!!r/an&% t! )&!e/rae the re%a&n&n/ !nta%&nant. The eet ! h$r!/en0er!(&e *a tete at three !nentrat&!n: 6er!2 !ne2 an t*! 0erent 4)$ *e&/ht5.

S! a%0#e *ere ta7en at re/,#ar &ntera# !er a &(-*ee7 0er&!. Thee a%0#e *ere ana#$6e!r 0!##,tant #ee#2 %&r!)&a# 0!0,#at&!n harater&t&2 an %,ta/en&&t$. The %&r!)&a#0!0,#at&!n harater&t& t,&e &n#,e t!ta# )&!%a2 0!0,#at&!n !%0!&t&!n2 an e/raat&!nat&&t$.

The h&/het !era## e/raat&!n *a ah&ee )$ the t*!-0erent h$r!/en 0er!(&e2 *h&h *athe h&/het !nentrat&!n ! h$r!/en 0er!(&e tete. Th& #ee# ! h$r!/en 0er!(&e a#! ha the#ar/et &%0at !n the %&r!)&a# !%%,n&t$. The !nentrat&!n ! %&r!!r/an&% ereae )$ a

at!r ! !,r ater the h$r!/en 0er!(&e *a ae. H!*eer2 the %&r!)&a# 0!0,#at&!nre)!,ne *&th&n a *ee7. The a&t&!n ! een a %a## a%!,nt ! h$r!/en 0er!(&e 0r!,e)etter e/raat&!n than )&!re%e&at&!n a#!ne.

Key words: )&!re%e&at&!n2 !(&at&!n2 PAH2 PCP2 !