Introduction to Remediation of Arsenic Toxicity: Application of Biological Treatment Methods for Remediation of Arsenic Toxicity from Groundwaters

2015 ◽  
pp. 130-149
Keyword(s):  
Biological Treatment ◽  
Arsenic Toxicity ◽  
Treatment Methods

scholarly journals Emerging Biological Treatment Methods for Ankle Joint and Soft Tissue Conditions

2020 ◽  
Author(s):  
J. Nienke Altink ◽  
Gino M.M.J. Kerkhoffs
Keyword(s):  
Soft Tissue ◽  
Ankle Joint ◽  
Biological Treatment ◽  
Treatment Methods

Innovative Biological Treatment Methods for Degenerative Disc Disease

2022 ◽  
Vol 157 ◽  
pp. 282-299
Author(s):  
Sertac Kirnaz ◽  
Sunidhi Singh ◽  
Charisse Capadona ◽  
Marianne Lintz ◽  
Jacob L. Goldberg ◽  
...  
Keyword(s):  
Degenerative Disc Disease ◽  
Biological Treatment ◽  
Disc Disease ◽  
Treatment Methods ◽  
Degenerative Disc

scholarly journals Groundwater Remediation Using Biological And Photocatalytic Methods

2015 ◽  
Vol 43 (1) ◽  
pp. 39-44 ◽  
Author(s):  
Sándor Guba ◽  
Viola Somogyi ◽  
Erzsébet Szabóné Bárdos
Keyword(s):  
Activated Sludge ◽  
Active Ingredient ◽  
Biological Treatment ◽  
Groundwater Remediation ◽  
Uv Light ◽  
Transport Modelling ◽  
Sludge Treatment ◽  
Treatment Methods ◽  
Laboratory Conditions ◽  
Preliminary Information

Abstract The degradability of two commercially available pesticides was studied using heterogeneous photocatalytic and activated sludge treatment methods. The first pesticide contained 5% quizalofop-P-ethyl as an active ingredient and petroleum naphtha as a solvent, the latter causing difficulties both in photocatalytic and biological treatment methods. The active ingredient of the second compound was acetamiprid. The photocatalysis proved to be effective both under laboratory conditions (using UV light) and when exposed to sunlight, but the pesticides remained stable during the employed biological treatment. Preliminary information on its behaviour in soil was obtained from transport modelling.

scholarly journals Biotechnology for Gas-to-Liquid (GTL) Wastewater Treatment: A Review

Water ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 2126
Author(s):  
Riham Surkatti ◽  
Muftah H. El-Naas ◽  
Mark C. M. Van Loosdrecht ◽  
Abdelbaki Benamor ◽  
Fatima Al-Naemi ◽  
...  
Keyword(s):  
Biological Treatment ◽  
Volatile Fatty Acids ◽  
Human Life ◽  
Cell Immobilization ◽  
Oxygen Demand ◽  
Environmental Benefits ◽  
Aerobic Biodegradation ◽  
Treated Wastewater ◽  
Treatment Methods ◽  
Gas To Liquid

Gas-to-liquid (GTL) technology involves the conversion of natural gas into several liquid hydrocarbon products. The Fischer–Tropsch (F–T) process is the most widely applied approach for GTL, and it is the main source of wastewater in the GTL process. The wastewater is generally characterized by high chemical oxygen demand (COD) and total organic carbon (TOC) content due to the presence of alcohol, ketones and organic acids. The discharge of this highly contaminated wastewater without prior treatment can cause adverse effects on human life and aquatic systems. This review examines aerobic and anaerobic biological treatment methods that have been shown to reduce the concentration of COD and organic compounds in wastewater. Advanced biological treatment methods, such as cell immobilization and application of nanotechnology are also evaluated. The removal of alcohol and volatile fatty acids (VFA) from GTL wastewater can be achieved successfully under anaerobic conditions. However, the combination of anaerobic systems with aerobic biodegradation processes or chemical treatment processes can be a viable technology for the treatment of highly contaminated GTL wastewater with high COD concentration. The ultimate goal is to have treated wastewater that has good enough quality to be reused in the GTL process, which could lead to cost reduction and environmental benefits.

Selection of the Most Appropriate Leachate Treatment Methods: Part 1: A Review of Potential Biological Leachate Treatment Methods

1988 ◽  
Vol 23 (2) ◽  
pp. 308-328 ◽  
Author(s):  
D.J.L. Forgie
Keyword(s):  
Molecular Weight ◽  
Biological Treatment ◽  
Volatile Fatty Acids ◽  
Oxygen Demand ◽  
Leachate Treatment ◽  
Treatment Methods ◽  
Loading Rates ◽  
Treatment Train ◽  
Physical And Chemical ◽  
Selection Of

Abstract This paper presents a review of North American and European literature concerning the physical and chemical characteristics of leachate and the biological treatment methods that have been used or could be used to treat leachate. Leachate characteristics of particular interest include five-day biochemical oxygen demand (BOD5) , chemical oxygen demand (COD), the BOD5/COD ratio, molecular weight and or size of the organics, volatile fatty acids (VFA’s), ammonia and metals. It is demonstrated that biological leachate treatment is most appropriate when the BOD5/COD ratio is high (i.e. > 0.4) and the molecular weight of the majority of the organics is less than 500 g/mole. Tables summarizing the various biological leachate treatment process loading rates are presented. This paper serves as the basis for two companion papers: ”Selection of the Most Appropriate Leachate Treatment Methods, PART 2 : A Review of Recirculation, Irrigation and Potential Physical-Chemical Treatment Methods” and “Selection of the Most Appropriate Leachate Treatment Methods, PART 3: A Decision Model for Treatment Train Selection”.

Control of refractory pollutants as useful resources by hydrothermal reaction coupled with biological treatment methods

2006 ◽  
Vol 1 (3) ◽  
Author(s):  
K. Kim ◽  
M. Fujita ◽  
H. Daimon ◽  
K. Fujie
Keyword(s):  
Biological Treatment ◽  
Hydrothermal Reaction ◽  
Carbon Sources ◽  
Poly Vinyl Alcohol ◽  
Excess Sludge ◽  
Hydrothermal Conditions ◽  
Structural Conversion ◽  
Treatment Methods ◽  
Chloroacetic Acids ◽  
The Moment

Relationship between structural conversion of refractory pollutants and their biodegradability improvement was clarified under various hydrothermal conditions to know the usability of treated refractory pollutants in biological treatment methods. Hydrothermal reaction was also verified by using real wastewater. High-molecular-weight structured poly vinyl alcohol and hydrocarbon structured chloroacetic acids were partially fractured by hydrolysis and dehydration at the beginning of hydrothermal reaction. Then partially fractured refractory pollutants were rapidly converted to easily degradable substances by thermal decomposition depending on hydrothermal conditions. This significant change occurred within 3 min from the moment reaching the desired conditions at 350 and 400oC. These results were very similar to the results of soybean milk, except dyeing wastewater involving aromatic compounds. Excess sludge treated by hydrothermal reaction was also converted to easily degradable substrate as carbon sources in a bioreactor. Hydrothermal reaction should be adjusted to increase the amount of biodegradable products in reactants, without much reduction of total organic carbon. The content change of refractory pollutants and excess sludge by hydrothermal reaction was the most important factor on the viewpoint of treated reactant reuse, for the following biological treatment methods.

Removal of human astroviruses from hospital wastewater by two biological treatment methods: natural oxidizing lagoons and rotating biodisks

2017 ◽  
pp. 287-296 ◽  
Author(s):  
Chourouk Ibrahim ◽  
◽  
Ines Mehri ◽  
Salah Hammami ◽  
Selma Mejri ◽  
...  
Keyword(s):  
Biological Treatment ◽  
Hospital Wastewater ◽  
Treatment Methods ◽  
Human Astroviruses

Nature Works: Biological Treatment Methods Yield High-Quality Water

Opflow ◽  
2010 ◽  
Vol 36 (7) ◽  
pp. 12-15 ◽  
Author(s):  
Pat Evans
Keyword(s):  
Biological Treatment ◽  
High Quality ◽  
Treatment Methods ◽  
Quality Water
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