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You searched for: Subject term cadmium Remove constraint Subject term: cadmium Subject term adsorbents Remove constraint Subject term: adsorbents
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1. 2,4-Dinitrophenylhydrazine functionalized sodium dodecyl sulfate-coated magnetite nanoparticles for effective removal of Cd(II) and Ni(II) ions from water samples

Author:
Soheil Sobhanardakani; Raziyeh Zandipak
Source:
Environmental monitoring and assessment 2015 v.187 no.7 pp. 412
ISSN:
0167-6369
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; aqueous solutions; cadmium; cations; magnetite; models; nanoparticles; nickel; pH; river water; sampling; scanning electron microscopy; sodium; sodium dodecyl sulfate; tap water; temperature; testing; wastewater
Abstract:
... 2,4-Dinitrophenylhydrazine immobilized on sodium dodecyl sulfate (SDS)-coated magnetite and was used for removal of Cd(II) and Ni(II) ions from aqueous solution. The prepared product was characterized by X-ray diffraction (XRD) analysis, Fourier transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM). The size of the nanoparticles according to SEM was obtained around 20–35  ...
DOI:
10.1007/s10661-015-4635-y

2. 226Ra, 238U and Cd adsorption kinetics and binding capacity of two cyanobacterial strains isolated from highly radioactive springs and optimal conditions for maximal removal effects in contaminated water

Author:
Fatemeh Heidari; Hossein Riahi; Mahmoud Reza Aghamiri; Farideh Zakeri; Zeinab Shariatmadari; Tomáš Hauer
Source:
International journal of phytoremediation 2018 v.20 no.4 pp. 369-377
ISSN:
1549-7879
Subject:
Chroococcidiopsis thermalis; Fourier transform infrared spectroscopy; Nostoc punctiforme; adsorbents; adsorption; aqueous solutions; binding capacity; binding sites; biomass; biosorption; cadmium; decontamination; heavy metals; hot springs; industrial effluents; models; pH; phytoremediation; radioactivity; radionuclides; radium; sorption isotherms; uranium; water pollution; water treatment
Abstract:
... Biomass-based decontamination methods are among the most interesting water treatment techniques. In this study, 2 cyanobacterial strains, Nostoc punctiforme A.S/S4 and Chroococcidiopsis thermalis S.M/S9, isolated from hot springs containing high concentrations of radium (²²⁶Ra), were studied to be associated with removal of radionuclides (²³⁸U and ²²⁶Ra) and heavy metal cadmium (Cd) from aqueous s ...
DOI:
10.1080/15226514.2017.1393392

3. A 2D-g-C3N4 nanosheet as an eco-friendly adsorbent for various environmental pollutants in water

Author:
Xingguo Cai; Junyong He; Liang Chen; Kai Chen; Yulian Li; Kaisheng Zhang; Zhen Jin; Jinyun Liu; Chengming Wang; Xuguang Wang; Lingtao Kong; Jinhuai Liu
Source:
Chemosphere 2017 v.171 pp. 192-201
ISSN:
0045-6535
Subject:
adsorbents; adsorption; aqueous solutions; cadmium; carbon nitride; electrostatic interactions; hydrophilicity; ions; methylene blue; microstructure; models; nanosheets; pH; pollutants; surface area; temperature
Abstract:
... A novel graphitic carbon nitride (g-C3N4) nanosheet adsorbent with a large surface area, remarkable hydrophilicity and high adsorption capacity, was presented for the removal of cadmium ions (Cd2+) and methylene blue (MB) from aqueous solution. Adsorption measurements were conducted systematically to study the influences of the contact time, initial concentrations of Cd2+ and MB, temperature, and ...
DOI:
10.1016/j.chemosphere.2016.12.073

4. A 3D titanate aerogel with cellulose as the adsorption-aggregator for highly efficient water purification

Author:
Ye Xiong; Chao Wang; Hanwei Wang; Qiufang Yao; Bitao Fan; Yipeng Chen; Qingfeng Sun; Chunde Jin; Xijin Xu
Source:
Journal of materials chemistry A 2017 v.5 no.12 pp. 5813-5819
ISSN:
2050-7496
Subject:
adsorbents; adsorption; aerogels; biodegradability; cadmium; catalysts; cellulose; copper; cross-linking reagents; disinfectants; disinfection; hydrophilicity; lead; oxidants; oxidation; strontium; water purification
Abstract:
... Making full use of the hydrophilicity, hydroxyl reactivity, high strength and stiffness, low weight and biodegradability of cellulose, a novel cellulose-based adsorption-aggregator is creatively exploited. In this work, a 3D titanate aerogel with cellulose as the adsorption-aggregator has been fabricated for highly efficient water purification. Herein, the polyhydric cellulose not only acts as a c ...
DOI:
10.1039/c6ta10638b

5. A Magnetized Nanoparticle Based Solid-Phase Extraction Procedure Followed by Inductively Coupled Plasma Atomic Emission Spectrometry to Determine Arsenic, Lead and Cadmium in Water, Milk, Indian Rice and Red Tea

Author:
Salameh Azimi; Zarrin Es’haghi
Source:
Bulletin of environmental contamination and toxicology 2017 v.98 no.6 pp. 830-836
ISSN:
0007-4861
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; arsenic; atomic absorption spectrometry; cadmium; carbon nanotubes; detection limit; heat production; lead; milk; models; nanoparticles; pH; rice; solid phase extraction; tea; transmission electron microscopy
Abstract:
... A sensitive and simple method using magnetic multi-walled carbon nanotube (MWCNTs-Fe₃O₄ MNP), as the adsorbent, has been successfully developed for extraction and pre-concentration of arsenic, lead and cadmium with detection by inductively coupled plasma-atomic emission spectroscopy (ICP-AES). The nanosorbent was characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction p ...
DOI:
10.1007/s00128-017-2068-8

6. A New Functionalized Resin for Preconcentration and Determination of Cadmium, Cobalt, and Nickel in Sediment Samples

Author:
Valfredo Azevedo Lemos; Geisa Santos do Nascimento; Leane Santos Nunes
Source:
Water, air, and soil pollution 2015 v.226 no.2 pp. 2281
ISSN:
0049-6979
Subject:
adsorbents; atomic absorption spectrometry; cadmium; cobalt; detection limit; infrared spectroscopy; marine sediments; metal ions; nickel; scanning electron microscopy
Abstract:
... Chelating reagents impregnated or incorporated into solid sorbents have been widely used in the preconcentration of metal species. In this work, polystyrene-divinylbenzene functionalized with 2-hydroxyacetophenone was used for the preconcentration and determination of cadmium, cobalt, and nickel in sediment samples by flame atomic absorption spectrometry. The sorbent was characterized by infrared ...
DOI:
10.1007/s11270-014-2281-6

7. A Novel Smart Microsphere with Magnetic Core and Ion-Recognizable Shell for Pb2+ Adsorption and Separation

Author:
Liu Ying-Mei; Ju Xiao-Jie; Xin Yan; Zheng Wei-Chao; Wang Wei; Wei Jie; Xie Rui; Liu Zhuang; Chu Liang-Yin
Source:
ACS Applied Materials & Interfaces 2014 v.6 no.12 pp. 9530-9542
ISSN:
1944-8252
Subject:
adsorbents; adsorption; cadmium; calcium; chromium; cobalt; copper; ions; iron oxides; lead; models; nickel; potassium; sorption isotherms; temperature; washing; zinc
Abstract:
... Smart core–shell microspheres for selective Pb²⁺ adsorption and separation have been developed. Each microsphere is composed of a Pb²⁺ recognizable poly(N-isopropylacrylamide-co-benzo-18-crown-6-acrylamide) (PNB) shell and a magnetic Fe₃O₄ core. The magnetic PNB core–shell microspheres show excellent Pb²⁺ adsorption selectivity among the coexisting Cd²⁺, Co²⁺, Cr³⁺, Cu²⁺, Ni²⁺, Zn²⁺, K⁺, and Ca²⁺ ...
DOI:
10.1021/am501919j

8. A Zn₂GeO₄–ethylenediamine hybrid nanoribbon membrane as a recyclable adsorbent for the highly efficient removal of heavy metals from contaminated water

Author:
Li Yu; Rujia Zou; Zhenyu Zhang; Guosheng Song; Zhigang Chen; Jianmao Yang; Junqing Hu
Source:
Chemical communications 2011 v.47 no.38 pp. 10719-10721
ISSN:
1364-548X
Subject:
adsorbents; cadmium; chemical communication; chemical reactions; cobalt; copper; heavy metals; lead; metal ions; nanomaterials; thermal stability; water pollution
Abstract:
... Zn₂GeO₄–ethylenediamine (ZGO–EDA) hybrid nanoribbons have been synthesized on a large-scale and directly assembled to membranes, which exhibit an excellent recyclability, high selectivity, and good thermal stability for highly efficient removal of heavy metal ions, i.e., Pb²⁺, Cd²⁺, Co²⁺, and Cu²⁺, from contaminated water. ...
DOI:
10.1039/c1cc14159g

9. A bowl-shaped biosorbent derived from sugarcane bagasse lignin for cadmium ion adsorption

Author:
Xiongyi Peng; Zijun Wu; Zhili Li
Source:
Cellulose 2020 v.27 no.15 pp. 8757-8768
ISSN:
0969-0239
Subject:
adsorbents; adsorption; biosorbents; cadmium; cellulose; chemical precipitation; electrostatic interactions; ion exchange; kinetics; lignin; lignocellulose; models; nitrogen; oxygen; sugarcane bagasse; surface area; water pollution
Abstract:
... Lignocellulosic materials have received wide interest in adsorption of contaminants in water due to their abundance, eco-friendliness, and low cost. However, the development of new adsorbents from lignocellulose with excellent performance is still a big challenge. In this work, a new bowl-shaped biosorbent (BSB) with surface functionality is prepared from lignin that is extracted from the abundant ...
DOI:
10.1007/s10570-020-03376-3

10. A breakthrough biosorbent in removing heavy metals: Equilibrium, kinetic, thermodynamic and mechanism analyses in a lab-scale study

Author:
Atefeh Abdolali; Huu Hao Ngo; Wenshan Guo; Shaoyong Lu; Shiao-Shing Chen; Nguyen Cong Nguyen; Xinbo Zhang; Jie Wang; Yun Wu
Source:
Science of the total environment 2016 v.542 pp. 603-611
ISSN:
0048-9697
Subject:
Fourier transform infrared spectroscopy; adsorbents; aqueous solutions; biosorbents; biosorption; cadmium; copper; fruit peels; heat production; heavy metals; lead; leaves; mandarins; metal ions; models; scanning electron microscopy; sorption isotherms; tea; wastes; zinc
Abstract:
... A breakthrough biosorbent namely multi-metal binding biosorbent (MMBB) made from a combination of tea wastes, maple leaves and mandarin peels, was prepared to evaluate their biosorptive potential for removal of Cd(II), Cu(II), Pb(II) and Zn(II) from multi-metal aqueous solutions. FTIR and SEM were conducted, before and after biosorption, to explore the intensity and position of the available funct ...
DOI:
10.1016/j.scitotenv.2015.10.095

11. A calcined clay fixed bed adsorption studies for the removal of heavy metals from aqueous solutions

Author:
Leila Khalfa; Ali Sdiri; Mohamed Bagane; Maria Luisa Cervera
Source:
Journal of cleaner production 2021 v.278 pp. 123935
ISSN:
0959-6526
Subject:
adsorbents; adsorption; advection; aqueous solutions; cadmium; chromium; clay; copper; effluents; heavy metals; lead; models; monitoring; pH; pollution control; wastewater treatment; water quality; zinc; Tunisia
Abstract:
... A natural clay material from southern Tunisia was used as a low cost sorbent in a column-wise removal of metal pollutants. This is fundamentally important for a sustainable wastewater treatment strategy. This work has been performed within the framework of a project aiming to the valorization of natural geomaterials, from Tunisia, in several environmental applications. Column adsorption experiment ...
DOI:
10.1016/j.jclepro.2020.123935

12. A co-confined carbonization approach to aligned nitrogen-doped mesoporous carbon nanofibers and its application as an adsorbent

Author:
Aibing Chen; Chao Liu; Yifeng Yu; Yongqi Hu; Haijun Lv; Yue Zhang; Shufeng Shen; Jian Zhang
Source:
Journal of hazardous materials 2014 v.276 pp. 192-199
ISSN:
0304-3894
Subject:
adsorbents; adsorption; aluminum oxide; cadmium; carbon dioxide; carbonization; gases; ionic liquids; nanofibers; nitrogen; nitrogen content; porous media; sulfur dioxide
Abstract:
... Nitrogen-doped carbon nanofibers (MCNFs) with an aligned mesoporous structure were synthesized by a co-confined carbonization method using anodic aluminum oxide (AAO) membrane and tetraethylorthosilicate (TEOS) as co-confined templates and ionic liquids as the precursor. The as-synthesized MCNFs with the diameter of 80–120nm possessed a bulk nitrogen content of 5.3wt% and bimodal mesoporous struct ...
DOI:
10.1016/j.jhazmat.2014.05.045

13. A comparative analysis of the adsorption kinetics of Cu2+ and Cd2+ by the microalgae Chlorella vulgaris and Scenedesmus obliquus

Author:
James Hockaday; Adam Harvey; Sharon Velasquez-Orta
Source:
Algal research 2022 v.64 pp. 102710
ISSN:
2211-9264
Subject:
Chlorella vulgaris; Scenedesmus obliquus; adsorbents; adsorption; algorithms; biomass; cadmium; copper; heavy metals; industry; microalgae; models; research; sorption isotherms; water treatment
Abstract:
... The ability of microalgae to adsorb heavy metals from their environment has been well documented, with numerous previous studies documenting their metal binding ability. This ability has brought interest of the water treatment industry as metal removal to ppb concentrations is an expensive undertaking using conventional methods. To date, few researchers have focussed on the kinetics of adsorption, ...
DOI:
10.1016/j.algal.2022.102710

14. A comparative study of Cd(ii) adsorption on calcined raw attapulgite and calcined aluminium hydroxide-modified attapulgites in aqueous solution

Author:
Qinhu Zhang; Run Chu; Yuzhen Wei; Liqun Cai
Source:
RSC advances 2022 v.12 no.22 pp. 13695-13705
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; aluminum; aqueous solutions; cadmium; comparative study; endothermy; heat production; ion exchange; pH; sorption isotherms; transmission electron microscopy
Abstract:
... In this study, raw attapulgite and two aluminium hydroxide-modified attapulgites prepared using different aluminium salts were calcined at 600 °C to successfully prepare three novel adsorbents (C-ATP, C-ATP-SO₄²⁻ and C-ATP-Cl⁻). The three adsorbents were characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Brunauer–Emmett ...
DOI:
10.1039/d2ra00720g

15. A comprehensive study of Cd(II) ions removal utilizing high-surface-area binary Mg–Si hybrid oxide adsorbent

Author:
F. Ciesielczyk; P. Bartczak; T. Jesionowski
Source:
International journal of environmental science and technology 2015 v.12 no.11 pp. 3613-3626
ISSN:
1735-1472
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; anions; cadmium; chemical composition; chlorides; coprecipitation; crystal structure; energy-dispersive X-ray analysis; gravimetry; kinetics; magnesium oxide; magnesium sulfate; models; nitrates; pH; particle size distribution; scanning electron microscopy; silica; sodium silicate; surface area
Abstract:
... Presented work concerns the application of synthetic oxide adsorbent in the removal of cadmium ions from its model, water solutions. In this study, a novel magnesium–silicon (Mg–Si) binary oxide adsorbent was prepared by a modified co-precipitation method, utilizing sodium silicate and magnesium sulphate solutions as precursors of silica and magnesium oxide, respectively. The material was thorough ...
DOI:
10.1007/s13762-015-0791-4

16. A comprehensive study on aquatic chemistry, health risk and remediation techniques of cadmium in groundwater

Author:
Monika Mahajan; Pankaj Kumar Gupta; Anita Singh; Barkha Vaish; Pooja Singh; Richa Kothari; Rajeev Pratap Singh
Source:
Science of the total environment 2022 v.818 pp. 151784
ISSN:
0048-9697
Subject:
adsorbents; cadmium; databases; environment; food chain; groundwater; health hazards; human health; inorganic carbon; ionic strength; meta-analysis; metadata; pH; phytoaccumulation; pollution; public health; risk; trace elements; India; Nigeria
Abstract:
... Cadmium (Cd), a non-essential trace element, it's intrusion in groundwater has ubiquitous implications on the environment and human health. This review is an approach to comprehensively emphasize on i) chemistry and occurrence of Cd in groundwater and its concomitant response on human health ii) sustainable Cd remediation techniques, iii) and associated costs. Current study is depending on meta-an ...
DOI:
10.1016/j.scitotenv.2021.151784

17. A critical approach to the toxic metal ion removal by hazelnut and almond shells

Author:
Salvatore Cataldo; Antonio Gianguzza; Demetrio Milea; Nicola Muratore; Alberto Pettignano; Silvio Sammartano
Source:
Environmental science and pollution research international 2018 v.25 no.5 pp. 4238-4253
ISSN:
0944-1344
Subject:
Fourier transform infrared spectroscopy; adsorbents; adsorption; almond shells; almonds; cadmium; differential scanning calorimetry; energy-dispersive X-ray analysis; equations; hazelnuts; ionic strength; lead; metal ions; models; pH; scanning electron microscopy; sodium chloride; sodium nitrate; thermogravimetry; toxicity
Abstract:
... The adsorption capacity of ground hazelnut (HS) and almond (AS) shells towards Pb(II) and Cd(II) has been studied at pH = 5, in NaNO₃ and NaCl ionic media, in the ionic strength range 0.05–0.5 mol L⁻¹. Kinetic and equilibrium experiments were carried out by using the Differential Pulse Anodic Stripping Voltammetry technique to check the amount of the metal ion removed by HS and AS materials. Diffe ...
DOI:
10.1007/s11356-017-0779-3

18. A critical review on recent developments in MOF adsorbents for the elimination of toxic heavy metals from aqueous solutions

Author:
Lata Rani; Jyotsna Kaushal; Arun Lal Srivastav; Pooja Mahajan
Source:
Environmental science and pollution research 2020 v.27 no.36 pp. 44771-44796
ISSN:
0944-1344
Subject:
adsorbents; adsorption; arsenates; arsenic; arsenites; cadmium; chemical reduction; chromium; coprecipitation; heavy metals; human health; ion exchange; lead; ligands; mercury; pollution; remediation; research; surface area; toxicity; ultrafiltration
Abstract:
... Effective and substantial remediation of contaminants especially heavy metals from water is still a big challenge in terms of both environmental and biological perspectives because of their adverse effects on the human health. Many techniques including adsorption, ion exchange, co-precipitation, chemical reduction, ultrafiltration, etc. are reported for eliminating heavy metal ions from the water. ...
DOI:
10.1007/s11356-020-10738-8

19. A double network gel as low cost and easy recycle adsorbent: Highly efficient removal of Cd(II) and Pb(II) pollutants from wastewater

Author:
Lin Chu; Chengbin Liu; Guiyin Zhou; Rui Xu; Yanhong Tang; Zebing Zeng; Shenglian Luo
Source:
Journal of hazardous materials 2015 v.300 pp. 153-160
ISSN:
0304-3894
Subject:
adsorbents; alcohols; cadmium; gels; heavy metals; industrial effluents; lead; polyacrylic acid; sorption isotherms; wastewater
Abstract:
... A high strength of polyving alcohol/polyacrylic acid double network gel (PVA/PAA gel) adsorbent was successfully prepared by a simple two-step method in this study. The gel adsorbent possessed the advantages of low cost and high adsorptivity for heavy metals in solution. The maximum uptake capacities of PVA/PAA gel were 194.99mg/g for Pb(II) and 115.88mg/g for Cd(II) inferred from the Langmuir mod ...
DOI:
10.1016/j.jhazmat.2015.06.070

20. A facile hydrothermal method–fabricated robust and ultralight weight cellulose nanocrystal-based hydro/aerogels for metal ion removal

Author:
Xuehua Liu; Mingcong Xu; Bang An; Zhenwei Wu; Rue Yang; Chunhui Ma; Qiongtao Huang; Wei Li; Jian Li; Shouxin Liu
Source:
Environmental science and pollution research international 2019 v.26 no.25 pp. 25583-25595
ISSN:
0944-1344
Subject:
acrylic acid; adsorbents; adsorption; aerogels; aquatic environment; cadmium; cellulose; chelation; copper; deformation; heavy metals; hot water treatment; human health; hydrogels; kinetics; lead; metal ions; models; moieties; nanocrystals; sorption isotherms; sulfonates; zeta potential
Abstract:
... Heavy metal ion contamination, in particular that associated with Pb²⁺, Cd²⁺, and Cu²⁺, poses a considerable threat to aquatic environments and human health. To obtain a highly efficient adsorbent, in this work, a facile hydrothermal method was applied to prepare acrylic acid grafted onto cellulose nanocrystal (AA-g-CNC) hydro/aerogel as an adsorbent for Pb²⁺, Cd²⁺, and Cu²⁺ removal. The obtained ...
DOI:
10.1007/s11356-019-05810-x