Biosorption of heavy metals by microorganisms: Evaluation of different underlying mechanisms

Priya, A.K.; Gnanasekaran, Lalitha; Dutta, Kingshuk; Rajendran, Saravanan; Deepanraj, B.; Soto-Moscoso, Matias

doi:10.1016/j.chemosphere.2022.135957

Cited by 201 publications

(65 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Chelating ligands bind with toxic metals to form metal-complexes. The metal-complex so formed are being extracted by body further [118]. For instance, 2,3-dimercaprol has been used to remove Pb and As poisoning, meso-2,3-dimercaptosuccinic acid is used for extraction of metal etc.…”

Section: Role Of Chemical Chelating Ligands In Heavy Metal Toxicity R...mentioning

confidence: 99%

See 1 more Smart Citation

Monitoring Strategies for Heavy Metals in Foods and Beverages: Limitations for Human Health Risks

Deka¹,

Kumar²,

Basumatary³

2023

Heavy Metals - Recent Advances

View full text Add to dashboard Cite

Foods and beverages with heavy metal contents, their Maximum Permissible Limits (MPL), Estimated Dietary Intake (EDI), Target Hazard Quotient (THQ) to study carcinogenic effects with other human health related matters and metal remediation’s are high priority issues for sustainable world-wide developments. Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES), Inductively Coupled Plasma-Mass Spectrometer (ICP-MS), Flame atomic absorption spectroscopy (FAAS), Total Reflection X-Ray Fluorescence (TRXF) Spectroscopy, Chemical Replacement Combined with Surface-Enhanced Laser-Induced Breakdown Spectroscopy (CR-SENLIBS), Electrochemical apt- sensors are some advanced monitoring tactics for heavy metal detection. Nanotechnology innovations, soil state-of art remediation are used now-a-days for removal of metals from foods and beverages. In addition to this, chelating ligands, plant phenolic have crucial applications in heavy metal removal from foods. Bio-absorbents like microbial cultures, fermentation wastes also play crucial role in heavy metal remediation from foods and beverages. In the present chapter various metal monitoring tactics are focused with advance metal remediation procedures associated with food and beverages. Limitations of various metals associated with human health risks are also summarized herein.

show abstract

Section: Role Of Chemical Chelating Ligands In Heavy Metal Toxicity R...mentioning

confidence: 99%

“…For instance, 2,3-dimercaprol has been used to remove Pb and As poisoning, meso-2,3-dimercaptosuccinic acid is used for extraction of metal etc. [118]. [115,117].…”

Section: Role Of Chemical Chelating Ligands In Heavy Metal Toxicity R...mentioning

confidence: 99%

Monitoring Strategies for Heavy Metals in Foods and Beverages: Limitations for Human Health Risks

Deka¹,

Kumar²,

Basumatary³

2023

Heavy Metals - Recent Advances

View full text Add to dashboard Cite

show abstract

“…However, also after a chemical pretreatment, the main biological treatment drawback, represented by metal and heavy metal biosorption by the microbial community, can still occur. 23,24 This would entail the production of a biological sludge with high concentrations of these elements and consequent problems concerning its disposal.…”

Section: Introductionmentioning

confidence: 99%

“…involving advanced oxidation processes) can increase the biodegradability of SMWFs 21,22 without leading to antimicrobial‐resistant microorganism proliferation. However, also after a chemical pretreatment, the main biological treatment drawback, represented by metal and heavy metal biosorption by the microbial community, can still occur 23,24 . This would entail the production of a biological sludge with high concentrations of these elements and consequent problems concerning its disposal.…”

Section: Introductionmentioning

confidence: 99%

Pilot‐scale treatment cycle comprising membrane, thermal, and adsorption processes for spent metalworking fluids remediation

Capua

Ferraro

Lepore³

et al. 2023

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND Spent metalworking fluids (SMWFs) represent a process waste characterized by low biodegradability, high toxicity, and very heterogeneous contamination typology connoted by the occurrence of numerous different pollutants. In this regard, the development of technically flexible and efficient treatment systems is fundamental to prevent sanitary and environmental risks deriving from SMWF disposal. RESULTS A treatment cycle including ultrafiltration (UF), evaporation, reverse osmosis (RO), and granular activated carbon (GAC) adsorption was tested at pilot scale for the remediation of three real SMWFs. A total of 44 parameters (physical, chemical, and ecotoxicological), identifying the SMWF characteristics and contamination, were analyzed after each treatment unit. The treatment cycle performance was investigated with and without the UF phase. In the complete cycle, UF was effective for the decrease of (average values) total suspended solids (96%), total hydrocarbons (>99%), animal fats and oils (>99%), and ecotoxicity (85%). In the same cycle, the evaporation significantly reduced the organic content (91% on average), and RO followed by GAC adsorption further provided effluents suitable for reuse in industrial applications. For the cycle without UF, parameters such as chemical oxygen demand, biochemical oxygen demand, and ecotoxicity showed values still significant (on average equal to 5550 mg L−1, 1933 mg L−1, and 95%, respectively) after evaporation. However, RO and GAC adsorption units allowed the achievement of effluents suitable for discharge in sewer systems. CONCLUSIONS According to the results, this work provides treatment strategies displaying high SMWF remediation efficiency and wide adaptability over various requirements for the achievement of specific effluent quality standards. © 2023 The Authors. Journal of Chemical Technology and Biotechnology published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry (SCI).

show abstract

“…Heavy metal ions such as Copper [4], Iron [5] and Cobalt [6] are the prominent contaminants of underground water. Various techniques such as ion exchange [7,8], resin method [9], biosorption [10,11,12], Precipitation [13,14] and absorption [15,16] etc had been developed and employed for the removal of such pollutants. Now researchers are focusing on the use of gels for water purification [17,18].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Metal Ions Sorption Studies of Pectin and Pectin-G-Aam Hydrogels by Thermal-Induced Graft Copolymerisation

2022

IRJMETS

View full text Add to dashboard Cite

In the present study, an attempt has been made to synthesize a novel hydrogel from apple pectin extracted from Apple pomaces (waste). The hydrogel was synthesized by grafting Acrylamide (AAm) onto Apple pectin using Potassium peroxydisulphate as a free radical initiator in a redox system comprising Potassium peroxydisulphate -Sulfuric acid (KPS -SA). The optimum reaction conditions for grafting were evaluated by varying the concentration of initiator, monomer, sulfuric acid, water, temperature and reaction time. The graft copolymerization conditions were systematically optimized to achieve a hydrogel with the highest yield percent. The biodegradability of pectin-g-AAm in comparison with backbone polymer was also studied. Removing heavy metal ions by hydrogels provides an environmentally friendly, low-cost, and effective technique than the precipitation process or ion exchangers. The Sorption behaviour of the Cu +2 , Fe +2 and Co +2 ions by the apple pectin and the pectin grafted AAm Hydrogels on different grafting percent as a function of time were studied at a constant temperature. The salt sensitivity and cation exchange property of pectin -g -AAm polymer hydrogels marks their suitability for use in water purification and drugs.

show abstract

Biosorption of heavy metals by microorganisms: Evaluation of different underlying mechanisms

Cited by 201 publications

References 70 publications

Monitoring Strategies for Heavy Metals in Foods and Beverages: Limitations for Human Health Risks

Monitoring Strategies for Heavy Metals in Foods and Beverages: Limitations for Human Health Risks

Pilot‐scale treatment cycle comprising membrane, thermal, and adsorption processes for spent metalworking fluids remediation

Synthesis and Metal Ions Sorption Studies of Pectin and Pectin-G-Aam Hydrogels by Thermal-Induced Graft Copolymerisation

Contact Info

Product

Resources

About