Adsorptive removal of heavy metals from industrial effluents using cow dung as the biosorbent: Kinetic and isotherm modeling

2020 ◽  
Vol 30 (1) ◽  
pp. 51-60
Author(s):  
Sushil Kumar Saraswat ◽  
Muslum Demir ◽  
Vijayalakshmi Gosu
Keyword(s):  
Heavy Metals ◽  
Industrial Effluents ◽  
Cow Dung ◽  
Isotherm Modeling ◽  
Adsorptive Removal ◽  
Removal Of Heavy Metals ◽  
Kinetic And Isotherm Modeling

Fabrication of carboxymethyl chitosan–hemicellulose resin for adsorptive removal of heavy metals from wastewater

2017 ◽  
Vol 28 (3) ◽  
pp. 625-632 ◽  
Author(s):  
Shu-Ping Wu ◽  
Xiang-Zi Dai ◽  
Jia-Rui Kan ◽  
Fang-Di Shilong ◽  
Mai-Yong Zhu
Keyword(s):  
Heavy Metals ◽  
Carboxymethyl Chitosan ◽  
Adsorptive Removal ◽  
Removal Of Heavy Metals

Effective Removal of Heavy Metals From Aqueous Solution by Nano-Composites

2018 ◽  
pp. 249-258 ◽  
Author(s):  
Ashok K. Rathoure ◽  
J. Anuradha ◽  
R. Sanjeevi ◽  
Dushyant Singh Chauhan ◽  
Sandeep Tripathi
Keyword(s):  
Heavy Metals ◽  
Magnetite Nanoparticles ◽  
Heavy Metal Contamination ◽  
Industrial Effluents ◽  
Nano Composites ◽  
Air Oxidation ◽  
Metals Removal ◽  
Removal Of Heavy Metals ◽  
Effects Of Ph ◽  
Living Organisms

Heavy metal contamination in industrial effluents presents a serious threat to the environment and human health because of their toxicity, non-biodegradability, carcinogenicity, and bioaccumulation in living organisms. Recently, the preparation and application of iron oxides, especially magnetite nanoparticles, for metals removal have been investigated due to their nano size, magnetic separation, and the ease of synthesis, coating, and modification. However, magnetic nanoparticles lose some magnetization due to air oxidation. Magnetite nanoparticles coating with inorganic shell, like silica and carbon, have been reported and were capable of improving chemical stability. The effects of pH, contact time, and initial concentrations on the removal of heavy metals should be studied using nano-composites in water. In this chapter, the authors present a technical review on different nano-composites used for bioremediation and their limitations.

Protein-derived nitrogen and sulfur co-doped carbon for efficient adsorptive removal of heavy metals

2019 ◽  
Vol 27 (10) ◽  
pp. 2581-2586 ◽  
Author(s):  
Yawei Shi ◽  
Wei Zheng ◽  
Hao Liu ◽  
Liang Wang ◽  
Hongwei Zhang
Keyword(s):  
Heavy Metals ◽  
Adsorptive Removal ◽  
Removal Of Heavy Metals ◽  
Co Doped

scholarly journals Experimental Investigation of Chlorella vulgaris and Enterobacter sp. MN17 for Decolorization and Removal of Heavy Metals from Textile Wastewater

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3034
Author(s):  
Muhammad Mubashar ◽  
Muhammad Naveed ◽  
Adnan Mustafa ◽  
Sobia Ashraf ◽  
Khurram Shehzad Baig ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Chlorella Vulgaris ◽  
Textile Industry ◽  
Oxygen Demand ◽  
Industrial Effluents ◽  
Textile Wastewater ◽  
Removal Of Heavy Metals ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Coloring Agents

The present study evaluated the performance of microalgae Chlorella vulgaris in an Enterobacter sp. MN17-assisted textile industry wastewater treatment system for decolorization, removal of heavy metals (Cu, Cr, Pb, and Cd), and chemical oxygen demand (COD). Different dilutions (5, 10, and 20%) of wastewater were prepared to decrease the pollutant toxicity for culturing microalgae and bacteria. Reduction of color, COD, and metal contents by microalgal treatment of wastewater varied greatly, while removal efficiency (RE) was significantly enhanced when endophytic bacterial strain MN17 inoculum was applied. Most notable, results were found at a 5% dilution level by Enterobacter sp. MN17-inoculated C. vulgaris medium, as chromium (Cr), cadmium (Cd), copper (Cu), and lead (Pb) concentrations were decreased from 1.32 to 0.27 mg L−1 (79% decrease), 0.79–0.14 mg L−1 (93% decrease), 1.33–0.36 mg L−1 (72% decrease), and 1.2–0.25 mg L−1 (79% decrease), respectively. The values of COD and color were also significantly decreased by 74% and 70%, respectively, by a C. vulgaris–Enterobacter sp. MN17 consortium. The present investigation revealed that bacterial inoculation of microalgae significantly enhanced the removal of coloring agents and heavy metals from textile wastewater by stimulating the growth of algal biomass. This study manifested the usefulness of microalgae–bacterial mutualism for the remediation of heavy metals, COD, and color in industrial effluents. Microalgae consortia with growth promoting bacteria could be a breakthrough for better bioremediation and bioprocess economy. Thus, further studies are needed for successful integration of microalgae–plant growth promoting bacterial (PGPB) consortium for wastewater treatments.

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