Application of chemical precipitation, metallic exchange and Fenton's reagent in photographic wastewaters treatment

被引：0

作者：

Rizk, Maria Cristina ^{[1
]}

Gimenes, Marcelino Luiz ^{[1
]}

Lenzi, Ervim ^{[2
]}

机构：

[1] Univ Estadual Maringa, Dept Engn Quim, BR-87020900 Maringa, Parana, Brazil

[2] Univ Estadual Maringa, Dept Quim, BR-87020900 Maringa, Parana, Brazil

来源：

ACTA SCIENTIARUM-TECHNOLOGY | 2007年 / 29卷 / 01期

关键词：

silver removal; organic matter degradation; wastewater treatment; chemical process; Fenton's reagent;

D O I：

暂无

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Photographic, graphic and radiographic wastewaters contain, in its composition, silver and organic compounds that confer a high organic content. Those wastewaters are, commonly, treated for silver removal, but the organic matter also needs to be reduced, since the chemical oxygen demand (COD) is close to 120,000 mg O-2 L-1. Therefore, the objective of this work is to study some processes capable of reducing the silver and COD photographic wastewaters concentrations. The precipitation with sodium sulfide (Na2S) and sodium chloride (NaCl), metallic replacement and advanced oxidation with Fenton's reagent were studied. The results showed that the Na2S precipitation and metallic replacement promoted the best silver removal, close to 100%, and the COD removal was around 10%. The experiments with NaCl did not promote satisfactory silver and COD removal and the Fenton's reagent removed 40 and 70% of COD and silver concentrations, respectively.

引用

页码：29 / 35

页数：7

共 50 条

[1] Treatment of industrial wastewaters by the Fenton's reagent
Rodriguez-Malaver, A
Matheus-Zerpa, R
[J]. FREE RADICAL BIOLOGY AND MEDICINE, 2004, 36 : S148 - S148
[2] Chemical treatment by Fenton's reagent oxidation and ozonation of wastewaters from olive oil mill
Garcia, Juan
Beltran-Heredia, Jesus
[J]. JOURNAL OF ADVANCED OXIDATION TECHNOLOGIES, 2008, 11 (03) : 568 - 572
[3] Degradation of wine distillery wastewaters by the combination of aerobic biological treatment with chemical oxidation by Fenton's reagent
de Heredia, JB
Torregrosa, J
Dominguez, JR
Partido, E
[J]. WATER SCIENCE AND TECHNOLOGY, 2005, 51 (01) : 167 - 174
[4] The use of Fenton's reagent for the treatment of maleloc anhydride process concentrated wastewaters
Barbusinski, K
[J]. PRZEMYSL CHEMICZNY, 2004, 83 (06): : 285 - 290
[5] Application of Fenton oxidation to cosmetic wastewaters treatment
Bautista, P.
Mohedano, A. F.
Gilarranz, M. A.
Casas, J. A.
Rodriguez, J. J.
[J]. JOURNAL OF HAZARDOUS MATERIALS, 2007, 143 (1-2) : 128 - 134
[6] Photodegradation of wastewaters in the presence of TiO2 and Fenton's reagent
Nogueira, RFP
Alberici, RM
Jardim, WF
[J]. CHEMICAL OXIDATION: TECHNOLOGIES FOR THE NINETIES, VOL 6, 1997, : 221 - 230
[7] An overview of the application of Fenton oxidation to industrial wastewaters treatment
Bautista, P.
Mohedano, A. F.
Casas, J. A.
Zazo, J. A.
Rodriguez, J. J.
[J]. JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, 2008, 83 (10) : 1323 - 1338
[8] Integrated Fenton's reagent-coagulation/flocculation process forthe treatment of cork processing wastewaters
Peres, JA
de Heredia, JB
Domínguez, JR
[J]. JOURNAL OF HAZARDOUS MATERIALS, 2004, 107 (03) : 115 - 121
[9] Reaction of Ion Exchange Resins with Fenton's Reagent
de Araujo, Leandro Goulart
Marumo, Julio Takehiro
[J]. ENVIRONMENTS, 2018, 5 (11): : 1 - 10
[10] Chemical oxidation treatment of petroleum contaminated soil using Fenton's reagent
Chen, CT
Tafuri, AN
Rahman, M
Foerst, MB
[J]. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING, 1998, 33 (06): : 987 - 1008

← 1 2 3 4 5 →