Assessing biomass diversity and performance of an activated sludge process treating saline table olive processing wastewater

Environmental Technology
Asma LazrakNaaila Ouazzani

Abstract

This study aimed to determine the effects of salinity on the biomass behavior and its diversity in activated sludge process (ASP) treating the table olive processing wastewater (TOPW), and to evaluate ASP performances under increased TOPW concentration feeding, the numerical abundance, diversity and activity of the biomass, removal efficiencies of chemical oxygen demand (COD), phenolic compounds, nitrogen and phosphorus were evaluated. Results showed that biomass growth is very high and became faster according to an increase in the percentage of TOPW feeding and reached 5.2 gMLVSS l-1. The specific oxygen uptake rate (SOUR) analysis revealed that salinity up to 10 g l-1provides an increase in biomass activity. SOUR reached a maximum of 20.3 gO2 gMLVSS-1 h-1. The increasing percentages of TOPW induce actually an evolution of microorganism's biodiversity; the microorganism communities were characterized by the abundance of halotolerant, Pseudomonas and Yeast genus that became the most abundant in the bioreactor as adaptation response against salinity. Furthermore, COD, phenolic compounds, nitrogen and phosphorus removal efficiencies attained 92.3%, 84.5%, 80% and 60%, respectively. A satisfactory release of extracellular polymeri...Continue Reading

References

Jul 1, 1997·Applied and Environmental Microbiology·J SnaidrK H Schleifer
Jun 11, 1999·Molecular Microbiology·M BarenboimR Young
Dec 21, 2002·Journal of Hazardous Materials·Francisco J RivasPedro Alvarez
Feb 16, 2006·Letters in Applied Microbiology·S YoshieA Hirata
Oct 31, 2006·Water Research·Olivier Lefebvre, René Moletta
Mar 27, 2007·Bioresource Technology·Eldon R ReneHung Suck Park
Sep 14, 2007·Water Science and Technology : a Journal of the International Association on Water Pollution Research·J LobosA Grasmick
Jan 5, 1990·Biotechnology and Bioengineering·D H Li, J J Ganczarczyk
Sep 13, 2008·Advances in Colloid and Interface Science·Md Ahmaruzzaman
Nov 5, 2011·Water Science and Technology : a Journal of the International Association on Water Pollution Research·I Vyrides, D C Stuckey
Mar 1, 1994·Environmental Science & Technology·Z C HuR L Crawford
May 23, 2012·Bioresource Technology·Wenshan GuoJianxin Li
Jun 15, 2012·Bioresource Technology·Sukru Aslan, Erdal Simsek

❮ Previous
Next ❯

Software Mentioned

TOPW

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.