2015
DOI: 10.1016/j.jhazmat.2015.04.062
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Complete removal of AHPS synthetic dye from water using new electro-fenton oxidation catalyzed by natural pyrite as heterogeneous catalyst

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Cited by 240 publications
(69 citation statements)
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“…Natural pyrite (FeS 2 ), which is commonly found in the vicinity of coal and metal ore mines, has been used for the treatment of polluted water, since a low amount of iron is leached and because pH control of the water/wastewater can be avoided. In previous studies, pyrite was used as heterogeneous electro‐Fenton catalyst for the degradation of tyrosol (TY, 4‐(2‐hydroxyethyl)phenol), the antibiotic levofloxacin, and the 4‐amino‐3‐hydroxy‐2‐ p ‐tolylazo‐naphthalene‐1‐sulfonic acid) (AHPS) synthetic dye . This material circumvents the problem associated with sludge formation and the need for solution pH regulation.…”
Section: Introductionmentioning
confidence: 99%
“…Natural pyrite (FeS 2 ), which is commonly found in the vicinity of coal and metal ore mines, has been used for the treatment of polluted water, since a low amount of iron is leached and because pH control of the water/wastewater can be avoided. In previous studies, pyrite was used as heterogeneous electro‐Fenton catalyst for the degradation of tyrosol (TY, 4‐(2‐hydroxyethyl)phenol), the antibiotic levofloxacin, and the 4‐amino‐3‐hydroxy‐2‐ p ‐tolylazo‐naphthalene‐1‐sulfonic acid) (AHPS) synthetic dye . This material circumvents the problem associated with sludge formation and the need for solution pH regulation.…”
Section: Introductionmentioning
confidence: 99%
“…41,42 The initial pH values were measured in the beginning of the reaction after the addition of the catalyst and H 2 O 2 ; at neutral conditions, the initial pH drops from 5.0 to 4.0 after the catalyst addition, and to 3.5 after H 2 O 2 addition, which suggests the acidic character of the catalyst, as reported for similar iron compounds. 43 At acidic and basic conditions, the adjustment with HCl or NaOH was carried out in presence of the catalyst and the initial value was measured right after H 2 O 2 addition as the reaction started. A maximum degradation of 76% was achieved at neutral pH (3.5), 63% at acidic pH (2.4); however, at basic pH (10.5) only 41% was decolourized after 180 min.…”
mentioning
confidence: 99%
“…For EF, it was found that mineralization effectiveness was enhanced by the utilization of pyrite [30][31][32]. Chalcopyrite CuFeS 2 is an antiferromagnetic semiconductor with complex metal oxidation states, including Cu + , Cu 2+ , Fe 2+ , and Fe 3+ , which could contribute to the Fenton process [33].…”
Section: Accepted Manuscriptmentioning
confidence: 99%