Abstract
Catalytic degradation of pentachlorophenol in soil by heme and hydrogen peroxide has been hypothesized to occur through nonspe-cific catalytic reactions similar to those involving ligninase. The present study examines the evidence for a heme catalytic mechanism for the oxidation of organic compounds. In the presence of hydrogen peroxide, heme is converted to the ferryl heme radical (Hm-Fe+4•), which can oxidize organic compounds, such as 5-aminosalicylic acid (5-ASA). A second 5-ASA may later be oxidized by ferryl heme (Hm-Fe+4), which reverts to the ferric heme state (Hm-Fe+3) to complete the cycle. We believe that this catalytic cycle is involved in the degradation of hazardous pollutants, such as polycyclic aromatic hydrocarbons (PAHs). Remediation via heme catalytic reactions of PAHs in soil from a pole yard was evaluated, and about 96% of PAHs was found to disappear within 42 days after treatment with heme and hydrogen peroxide. In addition, benzo[a]pyrene and six other PAHs were undetectable among a total of 16 PAH compounds examined. Therefore, we propose heme catalysis as a novel technology for the remediation of hazardous compounds in contaminated soil.
| Original language | English |
|---|---|
| Pages (from-to) | 139-143 |
| Number of pages | 5 |
| Journal | Environmental Engineering Research |
| Volume | 19 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2014 Jan 1 |
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ASJC Scopus subject areas
- Environmental Engineering
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Verification of heme catalytic cycle with 5-aminosalicylic acid and its application to soil remediation of polycyclic aromatic hydrocarbons. / Chung, Namhyun; Park, Kapsung; Stevens, David K.; Kang, Guyoung.
In: Environmental Engineering Research, Vol. 19, No. 2, 01.01.2014, p. 139-143.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Verification of heme catalytic cycle with 5-aminosalicylic acid and its application to soil remediation of polycyclic aromatic hydrocarbons
AU - Chung, Namhyun
AU - Park, Kapsung
AU - Stevens, David K.
AU - Kang, Guyoung
PY - 2014/1/1
Y1 - 2014/1/1
N2 - Catalytic degradation of pentachlorophenol in soil by heme and hydrogen peroxide has been hypothesized to occur through nonspe-cific catalytic reactions similar to those involving ligninase. The present study examines the evidence for a heme catalytic mechanism for the oxidation of organic compounds. In the presence of hydrogen peroxide, heme is converted to the ferryl heme radical (Hm-Fe+4•), which can oxidize organic compounds, such as 5-aminosalicylic acid (5-ASA). A second 5-ASA may later be oxidized by ferryl heme (Hm-Fe+4), which reverts to the ferric heme state (Hm-Fe+3) to complete the cycle. We believe that this catalytic cycle is involved in the degradation of hazardous pollutants, such as polycyclic aromatic hydrocarbons (PAHs). Remediation via heme catalytic reactions of PAHs in soil from a pole yard was evaluated, and about 96% of PAHs was found to disappear within 42 days after treatment with heme and hydrogen peroxide. In addition, benzo[a]pyrene and six other PAHs were undetectable among a total of 16 PAH compounds examined. Therefore, we propose heme catalysis as a novel technology for the remediation of hazardous compounds in contaminated soil.
AB - Catalytic degradation of pentachlorophenol in soil by heme and hydrogen peroxide has been hypothesized to occur through nonspe-cific catalytic reactions similar to those involving ligninase. The present study examines the evidence for a heme catalytic mechanism for the oxidation of organic compounds. In the presence of hydrogen peroxide, heme is converted to the ferryl heme radical (Hm-Fe+4•), which can oxidize organic compounds, such as 5-aminosalicylic acid (5-ASA). A second 5-ASA may later be oxidized by ferryl heme (Hm-Fe+4), which reverts to the ferric heme state (Hm-Fe+3) to complete the cycle. We believe that this catalytic cycle is involved in the degradation of hazardous pollutants, such as polycyclic aromatic hydrocarbons (PAHs). Remediation via heme catalytic reactions of PAHs in soil from a pole yard was evaluated, and about 96% of PAHs was found to disappear within 42 days after treatment with heme and hydrogen peroxide. In addition, benzo[a]pyrene and six other PAHs were undetectable among a total of 16 PAH compounds examined. Therefore, we propose heme catalysis as a novel technology for the remediation of hazardous compounds in contaminated soil.
KW - 5-aminosalicylic acid (5-ASA)
KW - Heme
KW - Hydrogen peroxide
KW - Polycyclic aromatic hydrocarbons (PAHs)
KW - Remediation
UR - http://www.scopus.com/inward/record.url?scp=84903373985&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84903373985&partnerID=8YFLogxK
U2 - 10.4491/eer.2014.19.2.139
DO - 10.4491/eer.2014.19.2.139
M3 - Article
AN - SCOPUS:84903373985
VL - 19
SP - 139
EP - 143
JO - Environmental Engineering Research
JF - Environmental Engineering Research
SN - 1226-1025
IS - 2
ER -