Biosorbents for heavy metal removal from industrial effluents

Heavy metal removal from wastewater is a significant research area and recommends sustainable development. The heavy metals cause harmful health effects, increase environmental toxicity. Adsorption is a very effective method for heavy metal removal. A fixed bed for Cu(II) removal using rice hush, an agricultural waste, is reported in this paper. The study was carried out to determine the breakthrough curves with varying operating variables like influent concentration (10–30 mg/L), flow rate (10–40 ml/min), and bed height (4–10 cm) at pH 6. The variation of the process variables like influent concentration, flow rate, and bed height were investigated. The experimental data shows that adsorption capacity increases with the rise of influent concentration. The maximum value of adsorption capacity is 10.93 mg/g at a flow rate of 10 ml/min, bed height 4 cm, and influent concentration 30 mg/L. The applicability of the MLR and ANN modeling has also been successfully carried out. ANN has better predictability than MLR. The findings revealed that rice husk could be used to treat copper-containing industrial effluents.

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Biosurfactant Use in Heavy Metal Removal from Industrial Effluents and Contaminated Sites

Biosurfactants ◽

10.1201/b17599-20 ◽

2014 ◽

pp. 361-370 ◽

Cited By ~ 10

Author(s):

Andrea Franzetti ◽

Isabella Gandolfi ◽

Letizia Fracchia ◽

Jonathan Van Hamme ◽

Panagiotis Gkorezis ◽

...

Keyword(s):

Heavy Metal ◽

Metal Removal ◽

Heavy Metal Removal ◽

Industrial Effluents ◽

Contaminated Sites

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Application of Chitosan-Clay Biocomposite Beads for Removal of Heavy Metal and Dye from Industrial Effluent

Journal of Composites Science ◽

10.3390/jcs4010016 ◽

2020 ◽

Vol 4 (1) ◽

pp. 16 ◽

Cited By ~ 7

Author(s):

Shanta Biswas ◽

Taslim Ur Rashid ◽

Tonmoy Debnath ◽

Papia Haque ◽

Mohammed Mizanur Rahman

Keyword(s):

Heavy Metal ◽

Industrial Wastewater ◽

Metal Removal ◽

Heavy Metal Removal ◽

Industrial Effluent ◽

Industrial Effluents ◽

Tannery Effluent ◽

Composite Beads ◽

Standard Models ◽

Universal Application

In recent years, there has been increasing interest in developing green biocomposite for industrial wastewater treatment. In this study, prawn-shell-derived chitosan (CHT) and kaolinite rich modified clay (MC) were used to fabricate biocomposite beads with different compositions. Prepared composite beads were characterized by FTIR, and XRD, and SEM. The possible application of the beads was evaluated primarily by measuring the adsorption efficiency in standard models of lead (II) and methylene blue (MB) dye solution, and the results show a promising removal efficiency. In addition, the composites were used to remove Cr (VI), Pb (II), and MB from real industrial effluents. From tannery effluent, 50.90% of chromium and 39.50% of lead ions were removed by composites rich in chitosan and 31.50% of MB was removed from textile effluent by a composite rich in clay. Moreover, the composite beads were found to be activated in both acidic and basic media depending on their composition, which gives a scope to their universal application in dye and heavy metal removal from wastewater from various industries.

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Heavy metal removal from industrial effluents using biopolymer membranes

Biopolymer Membranes and Films ◽

10.1016/b978-0-12-818134-8.00014-6 ◽

2020 ◽

pp. 333-358

Author(s):

Vicente de Oliveira Sousa Neto ◽

Gilberto Dantas Saraiva ◽

Tecia Vieira Carvalho ◽

Ronaldo Ferreira do Nascimento

Keyword(s):

Heavy Metal ◽

Metal Removal ◽

Heavy Metal Removal ◽

Industrial Effluents

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Heavy metal removal from industrial effluents by sorption on cross-linked starch: Chemical study and impact on water toxicity

Journal of Environmental Management ◽

10.1016/j.jenvman.2010.10.033 ◽

2011 ◽

Vol 92 (3) ◽

pp. 765-772 ◽

Cited By ~ 30

Author(s):

Bertrand Sancey ◽

Giuseppe Trunfio ◽

Jérémie Charles ◽

Jean-François Minary ◽

Sophie Gavoille ◽

...

Keyword(s):

Heavy Metal ◽

Metal Removal ◽

Heavy Metal Removal ◽

Industrial Effluents ◽

Chemical Study ◽

Water Toxicity

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Kinetic and equilibrium study of (poly amido amine) PAMAM dendrimers for the removal of chromium from tannery wastewater

Zeitschrift für Physikalische Chemie ◽

10.1515/zpch-2019-1567 ◽

2020 ◽

Vol 0 (0) ◽

Author(s):

Rizwana Naveed ◽

Ijaz Ahmad Bhatti ◽

Isra Sohail ◽

Ambreen Ashar ◽

Sobhy M. Ibrahim ◽

...

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Metal Removal ◽

Heavy Metal Removal ◽

Spherical Shape ◽

Industrial Effluents ◽

Pamam Dendrimers ◽

Water Soluble ◽

Tannery Wastewater ◽

Vis Spectroscopy

AbstractWater gets polluted by industrial effluents, mainly composed of heavy metals and organic materials. Water soluble heavy metals can be taken up by living organisms. Chromium mainly occurs in the form of chromate and cationic hydroxo complexes in water. Apart from conventional methods of heavy metal removal, there are some novel approaches such as using dendrimers for removal of heavy metal. Dendrimers are extremely branched nano sized polymers with a three-dimensional symmetry around a core that imparts poly functionality. PAMAM (poly amido amine) dendrimers having ethylene diamine as core and methyl acrylate as repeating unit was divergently synthesized. Characterization of PAMAM dendrimers was evaluated by UV–Vis spectroscopy, zeta sizer, scanning electron microscopy (SEM) and Fourier-transform infrared (FT-IR) spectroscopy. Zero generation dendrimers have amine terminal groups, showed intense amide group peak at 1596.76 cm−1. The λmax value was 278 nm. SEM exhibited spherical shape for full generation while needle like structure for −0.5 generation. Evaluation of chromium removal from wastewater has been done by atomic absorption spectroscopy (AAS). The data revealed that optimal removal of Cr occurs at dendrimer concentration of 5 mL, Cr concentration of 300 ppm, contact time of 2 min and pH 7. The synthesized dendrimers have effectively removed Cr from tannery wastewater.

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