Interaction of Heavy Metal Ions With Nanomaterials

2018 ◽  
pp. 184-201
Author(s):  
Suphiya Khan ◽  
Sonu Kumari
Keyword(s):  
Heavy Metal ◽  
Heavy Metal Contamination ◽  
Low Cost ◽  
High Surface ◽  
Heavy Metal Remediation ◽  
Green Route ◽  
Nanomaterials Synthesis ◽  
Global Concern ◽  
User Friendly ◽  
Remediation Process

Increasing water pollution due to heavy metals is a major global concern, and favorable remediation techniques are required. Heavy metal contamination affects both flora and fauna as it enters the food web. The development of nanotechnology and novel nanomaterials production has attracted researchers worldwide. Both carbon- and metal-based nanomaterials proved great adsorbents for heavy metal remediation because of their unique properties such as thermal and chemical stability and high surface. Novel green route for nanomaterials synthesis make the nanomaterials production an environmentally friendly, low cost, and user-friendly approach. This chapter reviews the heavy metal pollution causes and utilization of different nanomaterials for the remediation process.

Interaction of Heavy Metal Ions With Nanomaterials

2021 ◽  
pp. 1170-1183
Author(s):  
Suphiya Khan ◽  
Sonu Kumari
Keyword(s):  
Heavy Metal ◽  
Heavy Metal Contamination ◽  
Low Cost ◽  
High Surface ◽  
Heavy Metal Remediation ◽  
Green Route ◽  
Nanomaterials Synthesis ◽  
Global Concern ◽  
User Friendly ◽  
Remediation Process

Increasing water pollution due to heavy metals is a major global concern, and favorable remediation techniques are required. Heavy metal contamination affects both flora and fauna as it enters the food web. The development of nanotechnology and novel nanomaterials production has attracted researchers worldwide. Both carbon- and metal-based nanomaterials proved great adsorbents for heavy metal remediation because of their unique properties such as thermal and chemical stability and high surface. Novel green route for nanomaterials synthesis make the nanomaterials production an environmentally friendly, low cost, and user-friendly approach. This chapter reviews the heavy metal pollution causes and utilization of different nanomaterials for the remediation process.

scholarly journals TEKNOLOGI FITOREMEDIASI UNTUK PENANGANAN PENCEMARAN LOGAM BERAT DI LAHAN PERTANIAN DI KECAMATAN KEBAKKRAMAT KABUPATEN KARANGANYAR

2020 ◽  
Vol 18 (1) ◽  
pp. 25-36
Author(s):  
MMA. Retno Rosariastuti ◽  
Supriyadi Supriyadi ◽  
Wiwin Widiastuti
Keyword(s):  
Heavy Metal ◽  
Agricultural Land ◽  
Heavy Metal Contamination ◽  
Low Cost ◽  
Research Result ◽  
Paddy Fields ◽  
Metal Absorption ◽  
High Metal ◽  
Selection Of ◽  
Soil Cd

Research aim of heavy metal pollution handling in agricultural land use fitoremediation technologyis to know the effectivity of hemp and mendong plant used and it’s combination with rhizobacterial isolates Agrobacterium sp I3 or organic materials in order to decrease  the levels of heavy metal contamination in the soil such as cromium (Cr), cadmium  (Cd) and plumbum (Pb).The research was conducted in Waru Village Kebakkramat Sub-District Karanganyar Regency in 2016. The location is a subdistrict in Karanganuyar Regency whose area has many industries, mainly textile industry.Industrial wastewater in this region is widely used to irrigate rice fields by farmers, so the paddy fields have been polluted by Cr, Cd and Pb.Therefore, it is necessary to decrease the contamination of heavy metals in paddy fields with the selection of environmentally friendly remediation technology, low cost, easy and sustainable.The method of remediation in that category is bioremediation using a plant called phytoremediation.For that required plants that have rapid growth and high metal absorption capability.The character are owned by hemp and mendong plants.Based on previous research obtained Agrobacterium sp I3 rhizobacteria which proved able to increase the uptake of Cromium by hemp plant.The research result showed that hemp and mendong plants can absorb metal either Pb, Cd, or Cr.Based on the amount of metal absorption value in root and plant canopy, hemp plant and mendong shows its ability as hyper akumulator plant (the amount of uptake ≥ 100 ppm).The highest decrease of soil Pb content was 39,406% without treatment of basic fertilizer, with rhizobacterial inoculation Agrobacterium sp I3 and hemp plant.The highest decrease of soil Cd content was 56,604% with treatment with basic fertilizer, with inoculation of rhizobacteria Agrobacterium sp I3 and mendong plant.The highest decrease of Cr content of soil was 42,27% with treatment of basic fertilizer, without inoculation of Agrobacterium sp sp I3 and without hemp and mendong plants.

scholarly journals Carbon Nanomaterials for the Treatment of Heavy Metal-Contaminated Water and Environmental Remediation

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Rabia Baby ◽  
Bullo Saifullah ◽  
Mohd Zobir Hussein
Keyword(s):  
Heavy Metal ◽  
Surface Area ◽  
Environmental Remediation ◽  
Carbon Nanomaterials ◽  
Heavy Metal Contamination ◽  
High Surface ◽  
High Surface Area ◽  
Contaminated Water ◽  
Removal Of Heavy Metals ◽  
Carbon Based Nanomaterials

Abstract Nanotechnology is an advanced field of science having the ability to solve the variety of environmental challenges by controlling the size and shape of the materials at a nanoscale. Carbon nanomaterials are unique because of their nontoxic nature, high surface area, easier biodegradation, and particularly useful environmental remediation. Heavy metal contamination in water is a major problem and poses a great risk to human health. Carbon nanomaterials are getting more and more attention due to their superior physicochemical properties that can be exploited for advanced treatment of heavy metal-contaminated water. Carbon nanomaterials namely carbon nanotubes, fullerenes, graphene, graphene oxide, and activated carbon have great potential for removal of heavy metals from water because of their large surface area, nanoscale size, and availability of different functionalities and they are easier to be chemically modified and recycled. In this article, we have reviewed the recent advancements in the applications of these carbon nanomaterials in the treatment of heavy metal-contaminated water and have also highlighted their application in environmental remediation. Toxicological aspects of carbon-based nanomaterials have also been discussed.

scholarly journals Synthesis and Surface Modification of TiO2-Based Photocatalysts for the Conversion of CO2

Catalysts ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 227 ◽  
Author(s):  
Samar Al Jitan ◽  
Giovanni Palmisano ◽  
Corrado Garlisi
Keyword(s):  
Low Cost ◽  
High Surface ◽  
High Surface Area ◽  
Co2 Reduction ◽  
Active Surface ◽  
Product Yield ◽  
Photocatalytic Ability ◽  
Co2 Photoreduction ◽  
Global Concern ◽  
Adsorption Of Co2

Among all greenhouse gases, CO2 is considered the most potent and the largest contributor to global warming. In this review, photocatalysis is presented as a promising technology to address the current global concern of industrial CO2 emissions. Photocatalysis utilizes a semiconductor material under renewable solar energy to reduce CO2 into an array of high-value fuels including methane, methanol, formaldehyde and formic acid. Herein, the kinetic and thermodynamic principles of CO2 photoreduction are thoroughly discussed and the CO2 reduction mechanism and pathways are described. Methods to enhance the adsorption of CO2 on the surface of semiconductors are also presented. Due to its efficient photoactivity, high stability, low cost, and safety, the semiconductor TiO2 is currently being widely investigated for its photocatalytic ability in reducing CO2 when suitably modified. The recent TiO2 synthesis and modification strategies that may be employed to enhance the efficiency of the CO2 photoreduction process are described. These modification techniques, including metal deposition, metal/non-metal doping, carbon-based material loading, semiconductor heterostructures, and dispersion on high surface area supports, aim to improve the light absorption, charge separation, and active surface of TiO2 in addition to increasing product yield and selectivity.

scholarly journals Adsorption of Cr(VI) and Cu(II) from aqueous solutions by biochar derived from Chaenomeles sinensis seed

2019 ◽  
Vol 80 (12) ◽  
pp. 2260-2272 ◽  
Author(s):  
Xiaoling Hu ◽  
Jianyang Song ◽  
Hongyu Wang ◽  
Wei Zhang ◽  
Bin Wang ◽  
...  
Keyword(s):  
Heavy Metal ◽  
High Efficiency ◽  
Low Cost ◽  
Maximum Adsorption Capacity ◽  
Heavy Metal Remediation ◽  
Chaenomeles Sinensis ◽  
Wide Ph Range ◽  
Different Temperatures ◽  
Isotherms And Thermodynamics ◽  
Ph Range

Abstract In order to utilize the discarded Chaenomeles sinensis seed (CSS) and develop low-cost biochar for heavy metal pollution control, this study pyrolyzed CSS to prepare biochar at three different temperatures (300, 450 and 600 °C). The physicochemical properties of CSS biochar such as elemental composition, surface area, surface morphology and surface functional groups were characterized. Its adsorption properties including kinetics, isotherms and thermodynamics were studied. The results showed that the adsorption equilibrium was reached at 5 h, which was relatively fast. CSS biochar prepared at 450 °C (CSS450) had the maximum adsorption capacity for Cr(VI) and Cu(II), which was 93.19 mg/g and 105.12 mg/g, respectively. The thermodynamic parameter ΔG0 < 0 and the isotherm parameter RL between 0 and 1 all revealed the feasibility and spontaneity of the adsorption process. The removal of Cr(VI) exhibited high efficiency in a wide pH range (1–10), while the removal of Cu(II) was pH-dependent and optimal at pH = 6. The coexisting ions in the solution showed slight inhibition of the adsorption of Cr(VI) and Cu(II). Additionally, Cu(II) exhibited better affinity for CSS450 than Cr(VI) in dynamic adsorption. This is the first study to prepare biochar from CSS and confirms its potential application for heavy metal remediation.

scholarly journals Mercury and Antibiotic Resistance Co-Selection in Bacillus sp. Isolates from the Almadén Mining District

2021 ◽  
Vol 18 (16) ◽  
pp. 8304
Author(s):  
Marina Robas ◽  
Agustín Probanza ◽  
Daniel González ◽  
Pedro A. Jiménez
Keyword(s):  
Heavy Metal ◽  
Antibiotic Resistance ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Mining District ◽  
Human Pathogens ◽  
Ciudad Real ◽  
Plating Method ◽  
Bacillus Spp ◽  
Global Concern

Antibiotic resistance (AR) in the environment is of great global concern and a threat to public health. Soil bacteria, including Bacillus spp., could act as recipients and reservoirs of AR genes of clinical, livestock, or agricultural origin. These genes can be shared between bacteria, some of which could be potentially human pathogens. This process can be favored in conditions of abiotic stress, such as heavy metal contamination. The Almadén mining district (Ciudad Real, Spain) is one of the environments with the highest mercury (Hg) contamination worldwide. The link between heavy metal contamination and increased AR in environmental bacteria seems clear, due to co-resistance and co-selection phenomena. In the present study, 53 strains were isolated from rhizospheric and bulk soil samples in Almadén. AR was tested using Vitek®®2 and minimum inhibitory concentration (MIC) values were obtained and interpreted based on the criteria of the Clinical and Laboratory Standards Institute (CLSI) guidelines. Based on the resistance profiles, five different antibiotypes were established. The Hg minimum bactericidal concentration (MBC) of each strain was obtained using the plating method with increasing concentrations of HgCl2. A total of 72% of Bacillus spp. showed resistance to two or more commonly used antibiotics. A total of 38 isolates expressed AR to cephalosporins. Finally, the environmental co-selection of AR to cephalosporins and tetracyclines by selective pressure of Hg has been statistically demonstrated.

Low Cost Absorbents, Techniques, and Heavy Metal Removal Efficiency

2018 ◽  
pp. 50-79
Author(s):  
Harendra Kumar Sharma ◽  
Irfan Rashid Sofi ◽  
Khursheed Ahmad Wani
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Heavy Metal Contamination ◽  
Metal Removal ◽  
Low Cost ◽  
Heavy Metal Removal ◽  
Future Research ◽  
Removal Of Heavy Metals ◽  
Living Species ◽  
High Concentrations

Heavy metal contamination in water is a serious concern to the environment and human health. High concentrations of heavy metals in the environment can be toxic to a variety of living species. Natural bio-absorbents are abundant and inexpensive and considered a waste if not managed properly. The role of bio-absorbents has been widely studied and has been utilized for the removal of heavy metals. The objective of the chapter is to search the database for different absorbents and their efficiency for the removal of heavy metals. Key words related to the study have been used to select different papers published by the researchers all over the world. A rigorous three-tier process has been utilized by the authors to select the papers from the database for the current study. This chapter has identified a few research gaps in the field of heavy metal removal by using different low cast absorbents that need to be taken into account in future research.

scholarly journals Heavy metal remediation technologies in Latvia: possible applications and preliminary case study results / Technologie remediacji obszarów zanieczyszczonych metalami ciężkimi na Łotwie: możliwe zastosowania i wstępne wyniki badań

2012 ◽  
Vol 19 (4) ◽  
pp. 533-547
Author(s):  
Juris Burlakovs ◽  
Magnuss Vircavs
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Heavy Metal Contamination ◽  
Anthropogenic Activities ◽  
Residential Areas ◽  
Territorial Planning ◽  
Heavy Metal Remediation ◽  
Study Results ◽  
Polluted Sites

Abstract Environmental contamination with heavy metals as a result of anthropogenic activities is not a recent phenomenon. Contaminated sites with heavy metals can be found in functioning as well as abandoned industrial (brownfield) territories, landfills, residential areas with historical contamination, road sides and rarely in polluted sites by natural activities. Pollution data on its amount and concentrations is known from historical studies and monitoring nowadays, but it should be periodically updated for the use of territorial planning or in case of a change of the land use. A special attention should be paid to heavy metal contamination, because in many cases this contamination is most problematic for remediation. 242 territories now are numbered as contaminated and fixed in the National Register of contaminated territories - at least 56 of them are known as contaminated with heavy metals in different amount and concentration. Legislative aspects are discussed as well as an overview of soil and groundwater contamination research and the possible remediation technologies in Latvia are given. Two case studies are described in order to give the inside look in pre-investigations done before potential start of heavy metal remediation works.

scholarly journals Amino-Functionalized Wood Aerogel for Efficient Removal of Copper Ions from Water

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Junwang Meng ◽  
Hao Guan ◽  
Xinjian Dai ◽  
Xiaoqing Wang
Keyword(s):  
Heavy Metal ◽  
Copper Ions ◽  
Low Cost ◽  
Three Dimensional ◽  
Isotherm Models ◽  
High Porosity ◽  
Efficient Removal ◽  
Balsa Wood ◽  
Heavy Metal Remediation ◽  
Pseudo Second Order

Developing bio-based adsorbents for efficient removal of heavy metal ions from water has attracted increasing attention due to their abundance, low cost, and sustainability. However, most of these adsorbents are in powdered or granular forms, suffering from difficult regeneration and poor recyclability. Here, we report a highly porous three-dimensional amino-functionalized wood aerogel for efficient heavy metal adsorption. The amino-functionalized wood aerogel was prepared from natural balsa wood via a delignification treatment, followed by TEMPO-mediated oxidation of the delignified wood and then grafting polyethylenimine (PEI) onto the oxidized cellulose skeleton. The obtained amino-functionalized wood aerogel possessed a unique porous lamellar structure with a low bulk density of 77.2 mg/cm3 and high porosity of 94.9%. Benefiting from its high porosity and the introduced amino groups on the cellulose skeleton, the amino-functionalized wood aerogel exhibited a maximum Cu(II) adsorption capacity of 59.8 mg·g−1, which was significantly higher than those of the TEMPO-oxidized wood aerogel and natural balsa wood. The adsorption process can be well described by the pseudo-second-order and Langmuir isotherm models, indicating that the Cu(II) adsorption by the PEI@wood aerogel was dominated by a monolayer chemisorption process. The developed amino-functionalized wood aerogel provides new insights for the design of efficient and low-cost monolithic absorbents for heavy metal remediation.

scholarly journals A Multiuse Nanopore Platform with Disposable Paper Analytical Device for the Detection of Heavy Meatal Ions

2020 ◽  
Author(s):  
Imogen Heaton ◽  
Mark Platt
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Surface Charge ◽  
Metal Ion ◽  
Heavy Metal Contamination ◽  
Low Cost ◽  
Analytical Techniques ◽  
Environmental Sensors ◽  
Nickel Ions ◽  
Ion Current Rectification

The pollution of heavy metal ions within the environmental is a global problem. The rapid and precise removal of these contaminants can be aided by identifying and quantifying the composition of the sample. It is therefore crucial to develop effective portable analytical techniques to determine the levels of heavy metal contamination. Paper-based analytical devices (PADs) offer a low cost method making them an excellent platform for onsite environmental sensors. Here we demonstrate how a PAD can be integrated into a multi-use Nanopore platform. The PAD was functionalised with different recognition ligands, who’s surface charge densities varied in the presence of an analyte. The surface of the PAD was placed in contact with a Nanopore which exhibited Ion Current Rectification (ICR). The extent of ICR, was dependent upon the PAD’s surface charge, and the presence of the analyte of interest i.e. the ICR phenomena was exaggerated or diminished indicating the presence of the metal ion in solution. We demonstrate the potential of PAD-ICR using a PAD functionalised with a peptide aptamer specific for nickel ions. Allowing the detection of nickel(II) as low as 0.25 μM even in the presence of other metal ions. After any measurement, the Nanopore surface can be wiped clean, and reused.

Sign in / Sign up

Export Citation Format

Share Document