Low cost pyrrhotite ash/clay-based inorganic membrane for industrial wastewaters treatment

2020 ◽  
Vol 8 (1) ◽  
pp. 103646 ◽  
Author(s):  
B. Hatimi ◽  
J. Mouldar ◽  
A. Loudiki ◽  
H. Hafdi ◽  
M. Joudi ◽  
...  
Keyword(s):  
Low Cost ◽  
Inorganic Membrane ◽  
Industrial Wastewaters ◽  
Wastewaters Treatment

An Assessment of a Low-Cost Wastewater Disposal System after Twenty-Five Years of Operation

1987 ◽  
Vol 19 (5-6) ◽  
pp. 701-710 ◽  
Author(s):  
B. L. Reidy ◽  
G. W. Samson
Keyword(s):  
Large Scale ◽  
Low Cost ◽  
Wastewater Disposal ◽  
Industrial Base ◽  
Industrial Wastewaters ◽  
The Past ◽  
Gasification Process ◽  
Appropriate Treatment ◽  
Environmentally Safe ◽  
Coal Resource

A low-cost wastewater disposal system was commissioned in 1959 to treat domestic and industrial wastewaters generated in the Latrobe River valley in the province of Gippsland, within the State of Victoria, Australia (Figure 1). The Latrobe Valley is the centre for large-scale generation of electricity and for the production of pulp and paper. In addition other industries have utilized the brown coal resource of the region e.g. gasification process and char production. Consequently, industrial wastewaters have been dominant in the disposal system for the past twenty-five years. The mixed industrial-domestic wastewaters were to be transported some eighty kilometres to be treated and disposed of by irrigation to land. Several important lessons have been learnt during twenty-five years of operating this system. Firstly the composition of the mixed waste stream has varied significantly with the passage of time and the development of the industrial base in the Valley, so that what was appropriate treatment in 1959 is not necessarily acceptable in 1985. Secondly the magnitude of adverse environmental impacts engendered by this low-cost disposal procedure was not imagined when the proposal was implemented. As a consequence, clean-up procedures which could remedy the adverse effects of twenty-five years of impact are likely to be costly. The question then may be asked - when the total costs including rehabilitation are considered, is there really a low-cost solution for environmentally safe disposal of complex wastewater streams?

scholarly journals Boron doped diamond electrooxidation of 6:2 fluorotelomers and perfluorocarboxylic acids. Application to industrial wastewaters treatment

2017 ◽  
Vol 798 ◽  
pp. 51-57 ◽  
Author(s):  
Beatriz Gomez-Ruiz ◽  
Sonia Gómez-Lavín ◽  
Nazely Diban ◽  
Virginie Boiteux ◽  
Adeline Colin ◽  
...  
Keyword(s):  
Boron Doped Diamond ◽  
Industrial Wastewaters ◽  
Boron Doped ◽  
Perfluorocarboxylic Acids ◽  
Wastewaters Treatment

Nano-Iron Oxides Used for Environmental Applications

2013 ◽  
Vol 583 ◽  
pp. 3-8
Author(s):  
Andrei Predescu ◽  
Ecaterina Matei ◽  
Andra Mihaela Predescu ◽  
Andrei Berbecaru ◽  
Liana Vladutiu
Keyword(s):  
Magnetic Properties ◽  
Specific Surface ◽  
Surface Area ◽  
Iron Oxides ◽  
Toxic Metals ◽  
Core Shell ◽  
Industrial Wastewaters ◽  
Wastewaters Treatment ◽  
Acidic Conditions ◽  
Fast Removal

The paper emphasizes the importance of use the nano-iron oxides as treatment materials for wastewaters decontamination, having in mind the size of these compounds and specific surface area suitable for retaining toxic metals such as chromium or cadmium presented as major pollutants for industrial wastewaters. Also, the magnetic properties of the nano-iron oxides offer the possibility of a fast removal of these from the system, after wastewaters treatment. The obtaining of some core-shell composites with nano-iron oxides as core represent an advantage because of the dissolving tendency of the nano-iron oxides under acidic conditions, the situation being common to the industrial wastewaters.

Adsorbents for Removal of Hazardous Metals from waste water and natural water samples: A Review

2021 ◽  
pp. 471-478
Author(s):  
Kanhaya Lal ◽  
Garima Prajapat ◽  
Uma Rathore ◽  
Bhojak N.
Keyword(s):  
Metal Removal ◽  
Low Cost ◽  
Agricultural Waste ◽  
Environmental Contaminants ◽  
Heavy Metal Removal ◽  
Potential Solution ◽  
Industrial Wastewaters ◽  
Natural Adsorbents ◽  
Hazardous Metal ◽  
Waste Food

Wide ranges of low cost adsorbents were used to remove hazardous metal in aqueous solution and wastewater. The low cost adsorbents were usually collected from agricultural waste, seafood waste, food waste, industrial by-product and soil. These adsorbents are readily available in a copious amount. Some of the natural adsorbents appeared as good heavy metal removal, while some were not and require further modifications and improvements to enhance the adsorption capacity. Currently, heavy metals exist in most of the industrial wastewaters and water supplies are among the most severe environmental contaminants. Numerous research works have been conducted in this field, this review includes few potential solution containing papers.

Application of simple and low-cost toxicity tests for ecotoxicological assessment of industrial wastewaters

2015 ◽  
Vol 36 (22) ◽  
pp. 2825-2834 ◽  
Author(s):  
Mehmet Emin Aydin ◽  
Senar Aydin ◽  
Süheyla Tongur ◽  
Gülnihal Kara ◽  
Marit Kolb ◽  
...  
Keyword(s):  
Low Cost ◽  
Toxicity Tests ◽  
Ecotoxicological Assessment ◽  
Industrial Wastewaters

A novel cementitious microfiltration membrane: mechanisms of pore formation and properties for water permeation

RSC Advances ◽  
2015 ◽  
Vol 5 (1) ◽  
pp. 99-108 ◽  
Author(s):  
Zhe Wang ◽  
Zhonglin Chen ◽  
Jing Chang ◽  
Jimin Shen ◽  
Jing Kang ◽  
...  
Keyword(s):  
Pore Size ◽  
Pore Formation ◽  
Low Cost ◽  
Inorganic Membrane ◽  
Ambient Conditions ◽  
Microfiltration Membrane ◽  
Water Permeation

A low-cost cementitious inorganic membrane, with mean pore size of 2.4 μm, was fabricated under ambient conditions.

scholarly journals Efficiency of Microalgae Scenedesmus in the Removal of Nitrogen from Municipal Wastewaters

2019 ◽  
Vol 13 (2) ◽  
pp. 1-6
Author(s):  
Fatemeh Amini Fard ◽  
◽  
Reza Jalilzadeh Yengejeh ◽  
Mansoureh Ghaeni ◽  
◽  
...  
Keyword(s):  
Culture Medium ◽  
Removal Rate ◽  
Low Cost ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Algae Biomass ◽  
Treatment Processes ◽  
Low Concentrations ◽  
Wastewaters Treatment ◽  
Municipal Wastewaters

Background: Due to the high content of nitrogen in the municipal wastewaters, this study evaluated the efficiency of Scenedesmus as an important microalgae in the removal of nitrate from wastewaters and its application as an appropriate culture medium. As algae have high resistance to temperature and pH changes, they can absorb low concentrations of nutrients and need simple low-cost technology. Through photosynthesis, microalgae effectively stabilize carbon dioxide at a low cost, and the oxygen produced by the photosynthesis process can reduce the biochemical oxygen demand (BOD) of wastewaters. Methods: In this research, the chemical oxygen demand (COD), BOD, pH, total nitrogen (TN), and microalgae density were measured in the samples within 14 days after sampling from the inlet and outlet of municipal wastewaters treatment plant. Results: The results showed that nitrogen removal rate from the wastewaters at the laboratory conditions was 93% in the inlet and 85% in the outlet, which are higher in efficiency than those provided by other treatment processes. Conclusion: The microalgae can be used for the removal of nitrate and the production of algae biomass in municipal wastewaters processes before entering the natural environment.

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