scholarly journals Heavy Metals’ Concentration in Textile and Garments Industries’ Wastewater of Bhaluka Industrial Area, Mymensingh, Bangladesh

2015 ◽  
Vol 10 (1) ◽  
pp. 61-66 ◽  
Author(s):  
Biddut Sarker ◽  
Md. Abdul Baten ◽  
Md. Eqram-Ul Haque ◽  
Alok Das ◽  
Ahmed Hossain ◽  
...  
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Industrial Waste ◽  
Industrial Wastewater ◽  
Industrial Area ◽  
Industrial Waste Water ◽  
Safe Limits ◽  
Textile Industries ◽  
Wastewater Samples ◽  
Recommended Level

An investigation was made to ascertain heavy metals concentration in effluent samples collected from textile industries located at Bhaluka industrial area, Mymensingh, Bangladesh during August to November, 2013. Atomic absorption spectrometer (AAS) was used to evaluate the concentration of Zinc (Zn), Copper (Cu), Nickel (Ni), Cadmium (Cd), Chromium (Cr) and Lead (Pb) in the samples. The study revealed that heavy metals were present in variable amounts, where the concentrations of Cu (0.0405 ppm) and Pb (0.0003 ppm) were found lower than recommended level for industrial waste water. Among the present trace metals, the highest concentration (0.2-1.0 ppm) was found in Zn. Although the concentration is suitable for irrigation, it is unsafe for aquaculture. Besides, all of the wastewater samples possessed no Cr, Cd and Ni, which comprised less of the minimum acceptance level, indicating no possibility of contamination. However, comparing findings of this study with the safe limits for industrial wastewater, it can be concluded that the waste water of the study area except some sampling sites can be used for irrigation and aquaculture.

scholarly journals A novel efficient bioflocculant QZ-7 for the removal of heavy metals from industrial wastewater

RSC Advances ◽  
2019 ◽  
Vol 9 (48) ◽  
pp. 27825-27834 ◽  
Author(s):  
Zayed M. M. Abu Tawila ◽  
Salmah Ismail ◽  
Salem S. Abu Amr ◽  
Emad K. Abou Elkhair
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Water Treatment ◽  
Industrial Waste ◽  
Industrial Wastewater ◽  
Waste Water Treatment ◽  
Industrial Waste Water ◽  
Removal Of Heavy Metals

In this study, a novel bioflocculant was produced using Bacillus salmalaya 139SI for industrial waste water treatment.

Elaboration of an Efficiency Indicator of Treatment Industrial Waste Water by Ozone

2018 ◽  
Vol 931 ◽  
pp. 954-959 ◽  
Author(s):  
Stanislav E. Alekseev ◽  
Daria A. Pipko
Keyword(s):  
Waste Water ◽  
Industrial Waste ◽  
Industrial Wastewater ◽  
Material Balance ◽  
Organic Carbon Content ◽  
Organic Substances ◽  
Purification Process ◽  
Industrial Waste Water ◽  
Experimental Researches ◽  
Ozonation Process

While developing the technology of using ozone for the destruction of organic substances in industrial wastewater, it is important to determine the required dose of ozone and the period of water treatment. In some cases, for example, when the dyes are destroyed in textile sewage, the color reduction occurs earlier than the decomposition of the organic matter of the dyes. Thus, there is a need to control the purification process by several indirect indicators, such as oxidability, total organic carbon content and etc. There is also the difficulty in determining the required dose of ozone for the decomposition of contaminants. We carried out experimental researches and examined the material balance of the ozonation process. A generalized method for determining the consumption of ozone in the oxidation of contaminants in sewage waters is proposed. The indicator "chemical demand of ozone" is used. During the trial ozonation of waste water the method allows to obtain the dependence of ozone consumption on the processes of pollution destruction and to determine the required specific dose of ozone for the destruction of contaminants.

scholarly journals Phytoremediation of Heavy Metals Contamination in Industrial Waste Water by Euphorbia Prostrata

2013 ◽  
Vol 5 (1) ◽  
pp. 36-41 ◽  
Author(s):  
Amjad Husnain ◽  
Syed Shahid Ali ◽  
Zaheeruddin Zaheeruddin ◽  
Rabeea Zafar
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Industrial Waste ◽  
Industrial Waste Water ◽  
Heavy Metals Contamination ◽  
Euphorbia Prostrata

Performance evaluation of hybrid inorganic/organic adsorbents in removal and preconcentration of heavy metals from drinking and industrial waste water

Desalination ◽  
2010 ◽  
Vol 253 (1-3) ◽  
pp. 9-15 ◽  
Author(s):  
Mohamed E. Mahmoud ◽  
Osama F. Hafez ◽  
Ahmed Alrefaay ◽  
Maher M. Osman
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Performance Evaluation ◽  
Industrial Waste ◽  
Industrial Waste Water

Sorption of heavy metals from industrial waste water by low-cost mineral silicates

Clay Minerals ◽  
1999 ◽  
Vol 34 (3) ◽  
pp. 469-477 ◽  
Author(s):  
A. Garcia Sanchez ◽  
E. Alvarez Ayuso ◽  
O. Jimenez de Blas
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Industrial Waste ◽  
Low Cost ◽  
Reaction Medium ◽  
Cost Effective ◽  
Industrial Wastes ◽  
Industrial Waste Water ◽  
Adsorption Processes ◽  
Mineral Silicates

AbstractThe adsorption by different silicate minerals of some heavy metals, present in industrial waste water, has been studied. These adsorbents (mainly clay minerals) are readily available, inexpensive materials and offer a cost-effective alternative to conventional treatment of wastes from the metal finishing industry. The results show that some mineral species are suitable for the purification of such residual waters down to the limits prescribed by current legislation concerning industrial wastes. The Langmuir model was found to describe such adsorption processes best. Sepiolite (Orera, Spain) has an adsorption capacity of 8.26 mg g-1 for Cd2+, the capacities depending on the metal adsorbed in the order: Cd2+ > Cu2+ > Zn2+ > Ni2+. This mineral shows the highest sorption capacity relative to the other minerals studied. Factors in the reaction medium such as pH and ionic strength influenced the adsorption process.

Treatment of industrial waste water using Water hyacinth (Eichornia crassipus) and Duckweed (Lemna minor): A Comparative study

2019 ◽  
pp. 15-25
Keyword(s):  
Waste Water ◽  
Water Hyacinth ◽  
Industrial Waste ◽  
Lemna Minor ◽  
Industrial Area ◽  
Human Beings ◽  
Industrial Waste Water ◽  
Human Welfare ◽  
Quality Of Water ◽  
Maximum Decrease

As we all know that water is essential to all forms of life and makes up about 70% of the human body weight. Due to the direct link of water quality with human welfare, the quality of water is of vital concern. Industrialization plays major role in the development of a country’s economy. However, these plants and industries generate hazardous by-products and discharge them directly or partially treated into the environment which contaminates the surface water, ground water and soil causing a great threat to the life of human beings, animal and plants. In the present investigation an attempt has been made to identify the potential of water hyacinth (Eichornia crassipus) and Duckweed (Lemna minor) for the treatment of industrial waste water generated from Dehradun industrial area using phytoremediation technology on the basis of different physicochemical parameters such as pH, EC, DO, ORP, Salinity, TDS, BOD, COD, Hardness and Temperature. Eichornia crassipus shows maximum decrease in pH, TDS and COD and Lemna minor shows maximum decrease in EC, ORP, Salinity, BOD and TH. In case of DO maximum decrease was observed in control experiment. During the assessment period Lemna minor was found highly efficient in comparison to Eichornia crassipus. Both water hyacinth (Eichornia crassipus) and Duckweed (Lemna minor) shows maximum removal between 1st to 5th day of treatment but the removal goes down as the experiment proceeds towards the end as the retarded growth of plants was observed due to toxicity of accumulated pollutants inside the palnts.

scholarly journals Cadmium and lead tolerant bacteria isolated from industrial waste water

2017 ◽  
Vol 26 (1) ◽  
pp. 29-38
Author(s):  
Md Arifur Rahman Bhuiyan ◽  
Tazeen Fatima Khan ◽  
Shahjahan Choudhury ◽  
SM Imamul Huq
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Pseudomonas Aeruginosa ◽  
Bacillus Cereus ◽  
Industrial Waste ◽  
Resistant Bacteria ◽  
Bacterial Isolates ◽  
Industrial Waste Water ◽  
Acinetobacter Baumanii ◽  
Cadmium And Lead

An in vitro study was conducted to isolate, identify and characterize heavy metal resistant bacteria from industrial waste water and to determine their tolerance capacity to cadmium and lead. Different morphological, physiological and biochemical tests were carried out to identify the bacterial isolates in the waste water. A total of eight bacterial isolates viz., Staphyllococcus intermedius, Pseudomonas aeruginosa, Bacillus cereus, Bacillus subtilis, Escherichia coli, Acinetobacter baumanii, Pseudomonas flavescens and Acinetobacter lwofii were identified from metal polluted tannery and steel industrial areas. Bacterial response to cadmium tolerance was determined by treating them with CdCl2 solution at a rate of 1, 2, 2.5 and 5 μg/ml. In case of lead tolerant bacteria, PbCl2 solution was applied at a rate of 0.05, 0.125, 0.2 and 0.5 μg/ml. Pseudomonas aeruginosa isolated from waste water of steel industries and Bacillus cereus from tannery area was found to be the most tolerant species to the different doses of cadmium and lead. The study indicated that Pseudomonas aeruginosa and Bacillus cereus could be good candidates for the treatment and elimination of heavy metals from industrial waste water. The present study may be helpful to the bioremediation of heavy metals in the contaminated environment. Dhaka Univ. J. Biol. Sci. 26(1): 29-38, 2017 (January)

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