Review on magnetic nanoferrites and their composites as alternatives in waste water treatment: synthesis, modifications and applications

2020 ◽  
Vol 6 (3) ◽  
pp. 491-514 ◽  
Author(s):  
Mukesh Kumar ◽  
Harmanjit Singh Dosanjh ◽  
Sonika ◽  
Jandeep Singh ◽  
Kamarul Monir ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Present Review ◽  
Different Types ◽  
Surface Modified ◽  
Alternative Adsorbents

The present review highlights different types of nanoferrites and their surface-modified composites as alternative adsorbents in waste water treatment.

scholarly journals Application of Magnetic Nano Particles and their Composites as Adsorbents for Waste Water Treatment: A Brief Review

2021 ◽  
pp. 246-278
Author(s):  
M. Dhiman
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Nano Particles ◽  
Future Perspective ◽  
Isotherm Models ◽  
Water And Wastewater Treatment ◽  
The Future ◽  
Potential Applications ◽  
Surface Modified

The present review highlights the different types of nano ferrites and their surface modified composites as an alternative adsorbent in waste water treatment. In this review, the recent progresses and potential applications of SFNPs/SFNCs for the removal of organic and inorganic contaminants through adsorption routes are critically reviewed. There are number of water purification techniques but the adsorption is one of the simplest, effective and economical method for wastewater purification. Adsorption isotherm models, kinetic models, thermodynamic parameters and adsorption mechanism have also been discussed. The present article lists different type of adsorbents and reviews state-of-the-art of the removal of different pollutants from water. The efforts have been made to discuss the sources of contamination and toxicities of pollutants. The possible techniques of recovery and reuse, toxicity, research gaps and the future perspective of SFNPs are also discussed in brief. Based on this review, it is possible to conclude that SFNPs and their derivative composites have unlimited capacity in addressing array of problems encountered in water and wastewater treatment. The present study highlights the future areas of research for waste water treatment.

scholarly journals Inhibition of Activated Sludge Respiration by Heavy Metals

2020 ◽  
Vol 14 ◽  
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Heavy Metal ◽  
Water Treatment ◽  
Activated Sludge ◽  
Waste Water Treatment ◽  
Domestic Waste ◽  
Heavy Metal Concentrations ◽  
Water Treatment Plants ◽  
Different Types

Inhibition of the respiration microbial activity in the activated sludge caused by heavy metal concentrations (Cr, Cd, Cu and Ni) was studied by means of respirometric method using Strathtox respirometer (Strathkelvin Glasgow).The studied sludge samples were obtained from the two waste water treatment plants with different types of pollution (municipal waste water and domestic waste water)

scholarly journals Quantum Dots in Waste Water Treatment- Review Article

2020 ◽  
Vol 5 (8) ◽  
pp. 1449-1455
Author(s):  
Dr. A. Sandy Subala ◽  
Dr. K.V. Anand ◽  
Mr.S.Antony Sibi
Keyword(s):  
Waste Water ◽  
Quantum Dots ◽  
Water Treatment ◽  
Water Resources ◽  
Waste Water Treatment ◽  
Review Article ◽  
Contaminated Water ◽  
Chemical Methods ◽  
Treatment Review ◽  
Different Types

The effluents present in the water resources leads unqualified for various domestic and irrigation purposes. The waste water treatment purely depends upon the volume of contaminants. The objective of the study was to gives a detailed discussion about the chemical methods and different types of QDs involved, examining their effluents removing efficiency, the selectivity and sensitive detection of various chemicals present in the contaminated water bodies.

scholarly journals Waste Water Treatment by Using Moving Bed Bio Film Reactors

2020 ◽  
pp. 129-136
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Potable Water ◽  
Treatment Process ◽  
Waste Water Treatment ◽  
Sustainable Environment ◽  
Process Waste ◽  
Water Treatment Process ◽  
Different Types ◽  
Design Construction

Waste water treatment is essential to re use of used water. In this paper we discuss about the waste water treatment , process and various techniques used for the treatment process. Waste water treatment is also important factor for safety of the environment conditions. To make the environment free from hazardous conditions and to make the sustainable environment. It is also controls different types of pollutions in the water. It is eco friendly in nature. Waste water engineering is the branch of Environmental engineering. which deals with occurance, distribution and treatment of waste water and recycle use of waste water. It also used for study of design construction of structures related to supply of potable water towards public. To prevent water borne diseases from the water. It is also used for disposal of waste water by selecting suitable locations . the study of waste water is also important to understand the various types of pollutions in the soil. This knowledge helps to better usage of water and disposal of the water

The new technology of waste water treatment by using bioreactors with bio membranous movable bed – biochips

2020 ◽  
Vol 10 (3) ◽  
pp. 276-292
Author(s):  
Maria Y. Savostyanova ◽  
◽  
Lidia А. Norina ◽  
Arina V. Nikolaeva ◽  
◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Water Resources ◽  
Waste Water Treatment ◽  
Combined Treatment ◽  
Research Work ◽  
Pollution Level ◽  
Waste Waters ◽  
Treatment Facilities ◽  
Movable Bed

Retaining of water resources quality is one of the global ecological problems of the modern time. The most promising direction in solving the problem of water resources protection is the reduction of negative environmental influence of waste water from production facilities by upgrading the existing water treatment technologies. To treat utility water, technical and rain water from site facilities of Transneft system entities, the specialists developed and approved standard technological diagrams, which are used in producing treatment facilities. The standard technological diagrams provide for all necessary stages of waste water treatment ensures the reduction of pollution level to normal values. However, during operation of treatment facilities it was established, that to ensure the required quality of waste water treatment with initially high levels of pollution, the new technological solutions are necessary. The author presents the results of scientific-research work, in the context of which the best affordable technologies were identified in the area of the treatment of waste water with increased content of pollutants and non-uniform ingress pattern. On the basis of the research results the technical solutions were developed for optimization of operation of existing waste water treatment facilities by means of using combined treatment of technical and rain waters and utility waste waters and applying bioreactor with movable bed – biochips. The use of bioreactor with movable bed allows the increase in the area of active surface, which facilitates increase and retention of biomass. Biochips are completely immersed into waste waters, and biofilm is formed on the entire volume of immersion area, facilitating retention of biomass and preventing formation of sediments. Due to mixing the floating device with biofilm constantly moves along the whole area of bioreactor, and, in doing so, speeds up biochemical processes and uniformity of treatment. The advantages of a bioreactor with movable bed – its active sludge durability against increased and changing pollutant concentrations, change of waste water temperature and simplicity of application – ensured the possibility of its use for blending utility waters, technical and rain waters.

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