Impact of humic/fulvic acid on the removal of heavy metals from aqueous solutions using nanomaterials: A review

Tang, Wangwang; Zeng, Guangming; Gong, Ji-Lai; Liang, Jie; Xu, Piao; Zhang, Chang; Huang, Binbin

doi:10.1016/j.scitotenv.2013.09.044

Cited by 651 publications

(207 citation statements)

References 159 publications

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“…This is a significant result, as the carboxyl and hydroxyl groups of humic substances are the most likely to react with cations. Therefore, FA should have a higher capacity for interactions with metals (Tang et al, 2014;Kulikowska et al, 2015;ElBishlawi and Jaffe, 2015); the corroborating results are shown in table 4.…”

Section: Soluble-exchangeable Heavy Metals/metalloidsupporting

confidence: 64%

“…There was a higher binding affinity between some metals and FA compared to humic acids, due to more functional groups (e.g., OH and/or COOH) in FA that could complex with metal as well as higher polarities (Tang et al, 2014). Therefore, authors observed that the presence of FA led to a strong increase in Cu(II) sorption at low pH and a decrease at high pH.…”

Section: Soluble-exchangeable Heavy Metals/metalloidmentioning

confidence: 99%

“…However, although humic substances have been investigated as a washing agent for soils contaminated by polyaromatic hydrocarbons and other organic pollutants (Borggaard et al, 2009;Soleimani et al, 2010) and testing on heavy metal polluted soils is limited, in recent years some studies have been performed (Fonseca et al, 2013;Tang et al, 2014;An et al, 2015;Hwang et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Solubility of Heavy Metals/Metalloid on Multi-Metal Contaminated Soil Samples from a Gold Ore Processing Area: Effects of Humic Substances

Boechat

Pistóia

Lüdtke

et al. 2016

Rev. Bras. Ciênc. Solo

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Bioavailability of heavy metals at contaminated sites is largely controlled by the physicochemical properties of the environmental media such as dissolved organic matter, hydroxides and clay colloids, pH, soil cation exchange capacity and oxidation-reduction potential. The aim of this study was to investigate soil pH and heavy metal solubility effect by levels of humic and fulvic acids applied in soil samples with different levels of contamination by heavy metals. The soil samples used in this study were collected in a known metal-contaminated site. Humic acid (HA) and fulvic acid (FA) were purchased as a commercially available liquid material extracted from Leonardite. The experiment was carried out in a factorial scheme of 4 × (4 + 1), with four contaminated soil samples and four treatments, comprised of two levels of HA, two levels of FA and a control. The HA treatments increased the solubility of Cu, Zn, Ni, Cr, Cd, Pb, As and Ba from soils, while FA treatments decreased, thus raising or not their availability and mobility in soil. Humic acid concentration did not influence soil pH and FA decreased soil pH until 0.7 units. The initial heavy metal concentration in soil affects the magnitude of the processes involving humic substances. The lower releases of heavy metals by FA verified the importance of the complexation properties of organic compounds. These results appear to encourage the use of HA for increased plant-availability of heavy metals in remediation projects and the use of FA for decreased plant-availability of heavy metals at contaminated sites with a risk of introducing metals into the food chain.

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Section: Soluble-exchangeable Heavy Metals/metalloidsupporting

confidence: 64%

Section: Soluble-exchangeable Heavy Metals/metalloidmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Solubility of Heavy Metals/Metalloid on Multi-Metal Contaminated Soil Samples from a Gold Ore Processing Area: Effects of Humic Substances

Boechat

Pistóia

Lüdtke

et al. 2016

Rev. Bras. Ciênc. Solo

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“…The presence of HS in water can also pose serious environmental and health problems. They form strong complexes with heavy metals and can increase their transportation in waters [21]. Also, HS can react with chlorine during water treatment, and produce carcinogenic compounds such as trihalomethanes [22,23].…”

Section: Introductionmentioning

confidence: 99%

A novel approach for application of white rot fungi in wastewater treatment under non-sterile conditions: immobilization of fungi on sorghum

Zahmatkesh

Spanjers

Lier

2017

Environmental Technology

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Citation (APA)Zahmatkesh, M., Spanjers, H., & van Lier, J. B. (2017). A novel approach for application of white rot fungi in wastewater treatment under non-sterile conditions: immobilization of fungi on sorghum. Environmental Technology, 1-11. https://doi.org/10.1080/09593330.2017.1347718 Important noteTo cite this publication, please use the final published version (if applicable). Please check the document version above. CopyrightOther than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons. Takedown policyPlease contact us and provide details if you believe this document breaches copyrights. We will remove access to the work immediately and investigate your claim. In this study, we tested a new approach to facilitate the application of white rot fungi (WRF) under non-sterile conditions, by introducing grain sorghum as carrier and sole carbon and nutrient source for WRF. To this end, Trametes versicolor was immobilized on sorghum, and its ability to remove humic acid (HA) from synthetic and real industrial wastewater was studied. HA removal was measured as colour reduction and also analysed via size exclusion chromatography (SEC). Under sterile conditions, 80% colour removal was achieved for both synthetic and real wastewater using immobilized WRF on sorghum, without adding any additional carbon or nutrient sources. Under non-sterile conditions, immobilized fungi could again remove 80% of the colour and reached a maximum of 40 U/L laccase activity. In contrast, non-immobilized fungi cultivated in non-sterile wastewater supplemented with additional nutrients, reached only 10% decolourization and maximum 5 U/L laccase activity. SEC analysis showed that bioremoval of HA by WRF was associated with degradation of HA. Finally, immobilized fungi were used to treat real wastewater, under non-sterile conditions, in a sequential batch order without renewing the immobilized fungi. Four batch feedings were conducted and 80%, 70%, 50% and 40% colour removal was achieved for each batch, respectively, over a total incubation period of 19 days.

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“…Various toxic metal ions, anions, organic substances, dyes, virus and bacteria are subjected to the adsorptive removal using these amazing particles. [10][11][12] The present review article pertains to Aluminum oxide nanoparticles. In this report, the up-to-date review of investigations pertaining to the synthesis of stable nanoparticles of Aluminum oxides by conventional template 28 and pulsed laser ablation 29 are reported in literature and are well adopted.…”

Section: Introductionmentioning

confidence: 99%

Nano Aluminum Oxides as Adsorbents in Water Remediation Methods: A Review

2017

RJC

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Nanoparticles of Al2O3, are proving to be versatile adsorbents in the purification of water/waste water in view of their large surface area, high surface energies and potentials and availability of surface functional groups for binding over the pollutants. The conventional physical and/or chemical methods of syntheses are tedious, costly, involve toxic chemicals and not eco-friendly. Hence, using the extracts of plants as reducing, capping or stabilizing agents, the researchers are synthesizing the nanoparticles and these bio-methods are producing nano-particles that are more bio-compatible and endowed with enhanced sorption nature than the nanoparticles conventionally synthesized. Moreover, these methods are simple and depend upon the naturally available non-toxic compounds in the rich flora available in our surroundings and thereby domesticating the complicated syntheses. In the present review, the investigations pertaining to the synthesis of Aluminum oxide nanoparticles with more emphasis on phyto-(green) methods, and their applications to the removal of toxic ions from water, are emphatically reviewed. The less/not trodden potential areas of research are identified in the context of using nanoparticles of Aluminum oxides as adsorbents for developing water remediation methods.

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Impact of humic/fulvic acid on the removal of heavy metals from aqueous solutions using nanomaterials: A review

Cited by 651 publications

References 159 publications

Solubility of Heavy Metals/Metalloid on Multi-Metal Contaminated Soil Samples from a Gold Ore Processing Area: Effects of Humic Substances

Solubility of Heavy Metals/Metalloid on Multi-Metal Contaminated Soil Samples from a Gold Ore Processing Area: Effects of Humic Substances

A novel approach for application of white rot fungi in wastewater treatment under non-sterile conditions: immobilization of fungi on sorghum

Nano Aluminum Oxides as Adsorbents in Water Remediation Methods: A Review

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