scholarly journals Cationization of Eucalyptus wood waste pulps with diverse lignin contents for potential application in colored wastewater treatment

RSC Advances ◽  
2019 ◽  
Vol 9 (60) ◽  
pp. 34814-34826 ◽  
Author(s):  
Kinga Grenda ◽  
José A. F. Gamelas ◽  
Julien Arnold ◽  
Olivier J. Cayre ◽  
Maria G. Rasteiro
Keyword(s):  
Wastewater Treatment ◽  
Potential Application ◽  
Wood Waste ◽  
Eucalyptus Wood ◽  
Colored Wastewater

Eucalyptus wood waste has been used to produce cationic lignocellulose-based polyelectrolytes (PELs) and the new PELs proved to be efficient flocculants in the decoloration of dye-containing waters with potential application in several industries.

The first sequenced Sphaerotilus natans bacteriophage– characterization and potential to control its filamentous bacterium host

2021 ◽  
Vol 97 (4) ◽  
Author(s):  
Rute Ferreira ◽  
Rui Amado ◽  
Jorge Padrão ◽  
Vânia Ferreira ◽  
Nicolina M Dias ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Bacterial Communities ◽  
Potential Application ◽  
Deleterious Effect ◽  
Wastewater Treatment Plants ◽  
Lytic Phage ◽  
Filamentous Bacterium ◽  
Sphaerotilus Natans ◽  
Isolation And Characterization

ABSTRACT Bacteriophages (phages) are ubiquitous entities present in every conceivable habitat as a result of their bacterial parasitism. Their prevalence and impact in the ecology of bacterial communities and their ability to control pathogens make their characterization essential, particularly of new phages, improving knowledge and potential application. The isolation and characterization of a new lytic phage against Sphaerotilus natans strain DSM 6575, named vB_SnaP-R1 (SnaR1), is here described. Besides being the first sequenced genome of a Sphaerotilus natans infecting phage, 99% of its 41507 bp genome lacks homology with any other sequenced phage, revealing its uniqueness and previous lack of knowledge. Moreover, SnaR1 is the first Podoviridae phage described infecting this bacterium. Sphaerotilus natans is an important filamentous bacterium due to its deleterious effect on wastewater treatment plants (WWTP) and thus, phages may play a role as novel biotechnological tools against filamentous overgrowth in WWTP. The lytic spectrum of SnaR1 was restricted to its host strain, infecting only one out of three S. natans strains and infection assays revealed its ability to reduce bacterial loads. Results suggest SnaR1 as the prototype of a new phage genus and demonstrates its potential as a non-chemical alternative to reduce S. natans DSM 6575 cells.

Development of Advanced Floating Poly(Lactic Acid)-based Materials for Colored Wastewater Treatment

2021 ◽  
pp. 105328
Author(s):  
Stoja Milovanovic ◽  
Darka Markovic ◽  
Milica Pantic ◽  
Stefan M. Pavlovic ◽  
Joanna Knapczyk-Korczak ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Lactic Acid ◽  
Poly Lactic Acid ◽  
Colored Wastewater

scholarly journals Removing BOD, COD, and Decolorization of Batik Cual Wastewater Using Fenton Mechanism

2021 ◽  
Vol 10 (1) ◽  
pp. 139-148
Author(s):  
Rika Favoria Gusa ◽  
Diana Novita Sari ◽  
Fitri Afriani ◽  
Wahri Sunanda ◽  
Yuant Tiandho
Keyword(s):  
Wastewater Treatment ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Organic Dyes ◽  
Liquid Waste ◽  
Oxygen Demand ◽  
Degradation Efficiency ◽  
Color Degradation ◽  
Colored Wastewater

During the production of batik cual, thick-colored wastewater is produced. Unfortunately, the wastewater could damage the environment if it is disposed of without specific processing. The Fenton method is an advanced oxidation process (AOPs) that can degrade organic dyes found in liquid waste. In this research, the researchers studied the Fenton mechanism's application to the batik cual wastewater treatment. The Fenton's reagent used was H2O2 with FeSO4.7H2O. Some of the experimental wastewater treatment parameters were the values of biological oxygen demand (BOD), chemical oxygen demand (COD), the degradation efficiency of difficult to decompose organic materials, and the color degradation efficiency in batik cual wastewater. The results show that the Fenton mechanism’s efficiency of removing color from batik cual wastewater is up to 97.8%, COD and BOD removal efficiencies are 76.3% and 75.2%, and the degradation efficiency of difficult to decompose organic matter is 76.8%. Also, the researchers found that the higher amounts of FeSO4.7H2O increase the removal parameters effectiveness. Therefore, the Fenton mechanism can effectively improve the quality of wastewater in batik cual production.

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