Next Article in Journal
The Impact of Water Quality on the Use of Solar Water Heaters in Remote Islands of Taiwan
Previous Article in Journal
Influence of Inorganic Ions and Organic Substances on the Degradation of Pharmaceutical Compound in Water Matrix
Article Menu

Export Article

Open AccessArticle
Water 2016, 8(11), 531; doi:10.3390/w8110531

Enhancement of Activated Sludge Dewaterability by Using Filamentous Fungi as Bioadditives

Water Center for Latin America and the Caribbean, Tecnológico de Monterrey, Av. Eugenio Garza Sada Sur No. 2501, Col. Tecnológico, Monterrey C.P. 64849, NL, Mexico
*
Author to whom correspondence should be addressed.
Academic Editor: Andreas N. Angelakis
Received: 20 September 2016 / Revised: 9 November 2016 / Accepted: 10 November 2016 / Published: 15 November 2016
View Full-Text   |   Download PDF [2578 KB, uploaded 15 November 2016]   |  

Abstract

In this study, the dewaterability of activated sludge inoculated with spores of two filamentous fungi (Trichoderma reesei and Aspergillus oryzae) was evaluated. The reduction of capillary suction time (CST) and the increase of sludge solids content were used as parameters to assess the dewaterability of the sludge. Furthermore, the transformation of the extracellular polymeric substances (EPS) of the sludge during the fungal conditioning and the interaction of microbial and fungal populations were addressed. Fungal conditioning reduced the CST by 25% and increased the sludge solids content by 16%, denoting the enhancement of the sludge dewaterability. The optimum fungal conditioning time was three to four days. Fungi hydrolyzed the sludge EPS, allowing the release of water from the flocs matrix. Fungal conditioning increased the fungal and microbial communities. Furthermore, the increase of the fungal population augmented the hydrolytic activity of enzymes over the sludge EPS, enhancing the water release and consequently the dewaterability of the activated sludge. View Full-Text
Keywords: activated sludge; Aspergillus oryzae; capillary suction time; dewaterability; extracellular polymeric substances (EPS); Trichoderma reesei activated sludge; Aspergillus oryzae; capillary suction time; dewaterability; extracellular polymeric substances (EPS); Trichoderma reesei
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

López Zavala, M.Á.; Ramos Patlán, J.I. Enhancement of Activated Sludge Dewaterability by Using Filamentous Fungi as Bioadditives. Water 2016, 8, 531.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top