Decomposition of toxic pollutants in landfill leachate by ozone after coagulation treatment.

Decomposition of toxic pollutants in landfill leachate by ozone after coagulation treatment. Research Abstract Details 

Research Abstract Table of Contents

Jump to the:

Decomposition of toxic pollutants in landfill leachate by ozone after coagulation treatment. Abstract Text:

This study deals with evaluation of organic matter from Mexico City waste sanitary landfill leachate of Bordo Poniente (including domestic and industrial) by ozonation after a coagulation treatment with Fe2(SO4)(3) (2.5 g/L at pH 4-5). The content of humic substances after the coagulation treatment decreases up to 70%. Then leachate obtained from a solid with initial COD=1511 mg/L and the pH 8.5 was treated by ozone. The aqueous samples by a UV-vis and HPLC technique were analyzed. The partial identification of the initial composition of the organic matter as well as of intermediates and final products was carried out after the extraction of the initial and ozonated leachate with benzene, chloroform:methanol (2:1) and hexane. Then the extracts with a gas chromatograph with mass detector and FID were analyzed. In the HPLC results we identify malonic and oxalic acids. The initial concentrations of these acids were 19 mg/L and 214 mg/L, respectively. The oxalic acid is formatted and accumulated in ozonation. The obtained results show that the color disappears (visually) at 100% during 5 min of ozonation. The organic substances, extracted with chloroform-methanol, may be destructed during 15 min of ozonation; the organic matter, extracted with benzene, destructs completely by ozone during 5 min, and the organic compounds extracted with hexane have a low ozonation rate. The toxic compounds presented in leachate decompose completely during 15 min of ozonation. The ozonation rate constants for each group of organics (as observed constants) were calculated applying simplified mathematical model and the recurrent least square method using the program MATLAB 6.5.

Decomposition of toxic pollutants in landfill leachate by ozone after coagulation treatment. Publishing Authors By Initials

For similar abstracts research abstracts see: abstracts research

PUBMED ID PMID:

MEDLINE DATE:

Decomposition of toxic pollutants in landfill leachate by ozone after coagulation treatment. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Journal of hazardous materials

VOLUME: 152

Page Numbers: 1108-14

Journal Abbreviation: J. Hazard. Mater.

ISSN: 0304-3894

DAY: 3

MONTH: 08

YEAR: 2007

Decomposition of toxic pollutants in landfill leachate by ozone after coagulation treatment. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 9422688

Decomposition of toxic pollutants in landfill leachate by ozone after coagulation treatment. Keywords Mesh Terms:

KEYWORDS:

MESH TERMS:

Chemical & Substance for Abstract: Decomposition of toxic pollutants in landfill leachate by ozone after coagulation treatment. Information

Substance Name:

Registry Number:

Grant and Affiliation Information for Decomposition of toxic pollutants in landfill leachate by ozone after coagulation treatment.

AFFILIATION: Superior School of Chemical Engineering, National Polytechnic Institute (ESIQIE-IPN), Edif. 7, UPALM, C.P. 07738, Mexico, DF, Mexico. tpoznyak@ipn.mx <tpoznyak@ipn.mx>

Country: Netherlands

AGENCY:

GRANT:

ACRONYM:

MEDLINETA: J Hazard Mater

REFSOURCE:

DATABASENAME:

ACCESSION NUMBER:

Number Hits: 0

Decomposition of toxic pollutants in landfill leachate by ozone after coagulation treatment Related Publications

• Acquired immunodeficiency syndrome-associated psoriasis and Reiter's syndrome.
• Anti-inflammatory and apoptotic activities of pomolic acid isolated from Cecropia pachystachya.
• Atherosclerotic vascular disease: will folate or gene therapy be useful?
• Biomarkers of manganese exposure in a population living close to a mine and mineral processing plant in Mexico.
• Current view of the immunopathogenesis in inflammatory bowel disease and its implications for therapy.
• Decomposition of toxic pollutants in landfill leachate by ozone after coagulation treatment.
• Demethylnobiletin inhibits delayed-type hypersensitivity reactions, human lymphocyte proliferation and cytokine production.
• Examination of behavioral deficits triggered by targeting Bdnf in fetal or postnatal brains of mice.
• Genetic Variability of West Nile Virus in US Blood Donors, 2002-2005.
• High-performance liquid chromatographic analysis of 6-gingerol, 8-gingerol, 10-gingerol, and 6-shogaol in ginger-containing dietary supplements, spices, teas, and beverages.
• ICD-9 CM code 333.1 as an identifier of patients with essential tremor: a study of the positive predictive value of this code.
• Identifying speaker-dependent acoustic parameters in Spanish vowels.
• In vitro and in vivo effects of Ranunculus peltatus subsp. baudotii methanol extract on models of eicosanoid production and contact dermatitis.
• Instrumental planar chromatographic determination of benzodiazepines: comparison with liquid chromatography and gas chromatography.
• Interest in participating in clinical research: A study of essential tremor patients.
• Management of emergency department patients with primary spontaneous pneumothorax: needle aspiration or tube thoracostomy?
• Modulation of neurotransmitter systems by dehydroepiandrosterone and dehydroepiandrosterone sulfate: Mechanism of action and relevance to psychiatric disorders.
• Multiple origins of eusociality among sponge-dwelling shrimps (Synalpheus).
• Not Available
• Prevalence of the metabolic syndrome in the mestizo population of peru.
• Quark-Mass Dependence of the rho and sigma Mesons from Dispersion Relations and Chiral Perturbation Theory.
• Rapid sample screening method for authenticity controlling vanilla flavors using a CE microchip approach with electrochemical detection.
• Retrospective review of the clinical manifestations and outcomes in Puerto Ricans with idiopathic inflammatory myopathies.
• Supercritical fluid extraction of macrocyclic lactone mycotoxins in maize flour samples for rapid amperometric screening and alternative liquid chromatographic method for confirmation.
• Triterpenoids of Salvia longystyla1.
• [AORTIC VALVULAR STENOSIS. DIAGNOSIS, SURGICAL TREATMENT AND EVOLUTION IN 3 CASES.]
• [Development of local health systems in Uruguay]
• [Preliminary aspects of the pharmaco-psychiatric study of the ayahuasca and its active principle.]
• [Rare nasosinusal tumors: case series and literature review.]
• [Severe aneurisma I coronary artery disease probably caused by Kawasaki disease. Report of one case.]