alexa Partial characterization of the polluting load of swine wastewater treated with an integrated biodigestion system.
Environmental Sciences

Environmental Sciences

Journal of Bioremediation & Biodegradation

Author(s): Ferreira FL, de Lucas J, do Amaral LA

Abstract Share this page

Abstract The stabilization of swine wastewaters from swine confined housing by the combination of a upflow anaerobic sludge blanket (UASB) reactor and waste stabilization ponds is a viable alternative to minimize the environmental impact caused by inadequate disposal of swine wastewaters. In the present study, the polluting load of pre-decanted swine wastewater treated with a series of two 0.705 m(3) UASB reactors and then in parallel in aerated and non-aerated stabilization tanks was investigated from January to July, 2000. Physicochemical and microbiological analyses were made adopting standard methods (Standard Methods for Examination of Water and Wastewater, 19th ed., American Public Health Association, Washington, DC, 1995). COD values decreased as the wastewater ran through the integrated biodigestion system dropping from about 3492+/-511-4094 mgl(-1)+/-481 to 124+/-52-490 mgl(-1)+/-230, while nitrate and nitrite levels increased in stabilization tanks, ranging respectively from 4+/-0 to 20 mgl(-1)+/-3 and 3+/-1 to 11 mgl(-1)+/-24. Although the removal of Escherichia coli was more than 97\%+/-6, the effluents of the treatment system still contained unacceptable levels of E. coli (1.6 x 10(3)-1.2 x 10(6) 100 ml(-1)) according to WHO guidelines for use of wastewater in agriculture and aquaculture. These results indicate the necessity of changes on operational characteristics of the treatment system such as an increase of the hydraulic retention time in UASB reactors or in stabilization tanks.
This article was published in Bioresour Technol and referenced in Journal of Bioremediation & Biodegradation

Relevant Expert PPTs

Relevant Speaker PPTs

  • Dassanayake TDMSB
    Comparison of BMI, body fat percentage and lean body weight of national level teenage swimmers and non-swimmers in Sri Lanka
    PPT Version | PDF Version
  • Rasha Mosa
    Effects of growth hormone secretagogue receptor agonist and antagonist in non-obese Type 2 Diabetes MKR mice
    PPT Version | PDF Version
  • Bonamali Pal
    Metal-TiO2 nano-photocatalysts for detoxification of toxic pesticides, dyes, polyaromatics pollutants and bacteria under UV-sunlight irradiation
    PPT Version | PDF Version
  • Mohamed Ibrahim Dosouky Helal
    Use of nanotechnology in remediation of heavy metals polluted soils
    PPT Version | PDF Version
  • Trent Jackman
    Exploratory comparison of credentialed clinical instructors’ and non-credentialed clinical instructors’ report of frequency and importance of professional behaviors in clinical education
    PPT Version | PDF Version
  • Saraswathi K
    Diagnosis of different stages of non-proliferative diabetic retinopathy
    PPT Version | PDF Version
  • Guldeniz Karadeniz Cakmak
    The importance of intraoperative ultrasound guidance to achieve negative margins for palpable and nonpalpable breast cancer
    PPT Version | PDF Version
  • Elena Bonanno
    Microcalcification as an active phenomenon mediated by epithelial cells with mesenchymal characteristics
    PPT Version | PDF Version
  • Ben Nelson
    Purity, endotoxin level, and trace metal comparison of different grades of trehalose
    PPT Version | PDF Version
  • Antoine N. Gergess
    Antoine N. Gergess-University-of-Balamand-Lebanon-Cold-Bending-Steel-Beams-a-State-of-The-Art-Engineering-Solution-that-Meets-Industry-Challenges
    PPT Version | PDF Version
  • Gabriela Briceno
    Selection of an actinobacteria consortium for enhancing diazinon degradation
    PPT Version | PDF Version
  • Osama O. Ibrahim
    Chemicals structure, properties, regulations and applications of non-nutritive-high intensity sweeteners
    PDF Version
  • Wendy peters
    A non-replicating Ad5 vaccine for treatment of HSV-2
    PPT Version | PDF Version
  • Yosef Yarden
    Classically, the 3’untranslated region (3’UTR) is that region in eukaryotic protein-coding genes from the translation termination codon to the polyA signal. It is transcribed as an integral part of the mRNA encoded by the gene. However, there exists another kind of RNA, which consists of the 3’UTR alone, without all other elements in mRNA such as 5’UTR and coding region. The importance of independent 3’UTR RNA (referred as I3’UTR) was prompted by results of artificially introducing such RNA species into malignant mammalian cells. Since 1991, we found that the middle part of the 3’UTR of the human nuclear factor for interleukin-6 (NF-IL6) or C/EBP gene exerted tumor suppression effect in vivo. Our subsequent studies showed that transfection of C/EBP 3’UTR led to down-regulation of several genes favorable for malignancy and to up-regulation of some genes favorable for phenotypic reversion. Also, it was shown that the sequences near the termini of the C/EBP 3’UTR were important for its tumor suppression activity. Then, the C/EBP 3’UTR was found to directly inhibit the phosphorylation activity of protein kinase CPKC in SMMC-7721, a hepatocarcinoma cell line. Recently, an AU-rich region in the C/EBP 3’UTR was found also to be responsible for its tumor suppression. Recently we have also found evidence that the independent C/EBP 3’UTR RNA is actually exists in human tissues, such as fetal liver and heart, pregnant uterus, senescent fibroblasts etc. Through 1990’s to 2000’s, world scientists found several 3’UTR RNAs that functioned as artificial independent RNAs in cancer cells and resulted in tumor suppression. Interestingly, majority of genes for these RNAs have promoter-like structures in their 3’UTR regions, although the existence of their transcribed products as independent 3’UTR RNAs is still to be confirmed. Our studies indicate that the independent 3’UTR RNA is a novel non-coding RNA species whose function should be the regulation not of the expression of their original mRNA, but of some essential life activities of the cell as a whole.
    PPT Version | PDF Version
  • Ding-Gan Liu
    Independent 3’untranslated region RNA: A novel non-coding regulator RNA
    PPT Version | PDF Version

Recommended Conferences

Relevant Topics

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords