Novel magnetic lignin composite sorbent for chromium(<scp>vi</scp>) adsorption

Song, Zhanxin; Li, Wei; Li, Wentao; Yan, Yang; Wang, Ningning; Wang, Haijun; Gao, Haiyan

doi:10.1039/c4ra15546g

Cited by 74 publications

(31 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This adsorbent showed a removal efficiency of 99.99% when the pH was 2 and the initial Cr(VI) concentration was 300 mg/l [97]. A similar study was conducted by using chitosan as the polymer instead of polypyrrole, and a removal efficiency of 98% was reported at pH 2 and initial Cr(VI) concentration of 200 mg/l [96]. A cross-linked silica gel/chitosan-g-poly(butyl acrylate) nanocomposite showed a maximum Cr(VI) adsorption capacity of 55.71 mg/g [131].…”

Section: Nanoadsorbents For Chromium Remediationmentioning

confidence: 66%

“…As has been appropriately noted by Pan et al [17], more research needs to be focused on the immobilisation of Cr(III) obtained after reducing Cr(VI) by biofilms, as the insoluble Cr(III) can form organo-Cr(III) complexes, which become toxic for cells in high concentrations. Biosorption is an advantageous technique as it costs less, is highly effective, does not have any toxic side effects, the biosorbent can be rebuilt, and the adsorbed metal can be recovered for possible later usage [96].…”

Section: Conventional Processes For Chromium Remediationmentioning

confidence: 99%

See 1 more Smart Citation

Removal of chromium from industrial effluents using nanotechnology: a review

Mitra

Sarkar

Sen

2017

Nanotechnol. Environ. Eng.

132

View full text Add to dashboard Cite

The presence of chromium in industrial effluents has become a huge problem worldwide as hexavalent chromium is highly toxic to animals due to its ability to generate reactive oxygen species in cells. The trivalent state of chromium, on the other hand, is significantly less toxic and also serves as an essential element in trace amounts. When industries such as electroplating, tannery, dyeing and others release their effluents into water bodies, hexavalent chromium enters the food chain and, consequently, reaches humans in a biomagnified form. Many remediation processes for removal of hexavalent chromium have been researched and reviewed extensively. These include chemical reduction to trivalent chromium, solvent extraction, chelation and adsorption, among others. It has been generally concluded that adsorption (and/or subsequent reduction) of hexavalent chromium is the best method. However, relatively little is known about the potential of using nanoparticles as adsorbents for the removal of hexavalent chromium from industrial effluents. This method of nanoremediation is more effective than conventional remediation methods and is cost-effective for the industry in the long run. This article reviews the various remediation methods of hexavalent chromium, with emphasis on the field of nanoremediation.

show abstract

Section: Nanoadsorbents For Chromium Remediationmentioning

confidence: 66%

Section: Conventional Processes For Chromium Remediationmentioning

confidence: 99%

Removal of chromium from industrial effluents using nanotechnology: a review

Mitra

Sarkar

Sen

2017

Nanotechnol. Environ. Eng.

132

View full text Add to dashboard Cite

show abstract

“…Recently, Nair et al [14] investigated the chitosan-alkali lignin composites for adsorbing Cr (VI) and the result indicated that 95% of Cr (VI) ions could be removed under the given conditions. Similarly, Song et al [15] prepared a magnetic lignin composite for adsorption of Cr (VI). Recently, the waterresistant lignin/PVA blend fibers were also fabricated to remove Cr (VI) ions, and obtained an excellent absorbability of 350.87 mg/g, meanwhile presented the promising regeneration [16].…”

Section: Introductionmentioning

confidence: 99%

Fractionational and structural characterization of lignin and its modification as biosorbents for efficient removal of chromium from wastewater: a review

Wang

Sun

2019

J Leather Sci Eng

View full text Add to dashboard Cite

The removal of chromium (Cr) from wastewater by various adsorbents has been investigated. As compared with the commercial activated carbon, the biosorbents with inexpensive and high adsorption capacities are developed from lignocellulosic wastes. Lignin, existing in lignocellulosic biomass, is the second most abundant resource in nature. Recently, lignin-based bio-sorbents were served as an advanced novel material for the metal ions and dye adsorption from wastewater. It has showed several advantages in the wastewater treatments because of the lowcost, high adsorption capacity, easy recover, and possibility of metal recovery. In this review, the isolation of lignin from lignocellulosic biomass was summarized, and the structural characteristics of lignin were comparably analyzed. The modification of lignin was performed to obtain a large surface area, strong binding-site, and high and quick adsorption properties of lignin-based adsorption materials. The adsorption efficiency of Cr ions was found to be strongly dependent on the pH of the wastewater. To further illustrate the adsorption process, the structural changes and the interactions between the metal ions and the functional groups of the lignin-based biosorbents in the adsorption process should be further investigated. Once the cost-effective and high-efficiency modification techniques are developed, lignin-based adsorbents can be expected to be the most suitable alternatives for Cr ions removal from wastewater in industry.

show abstract

“…Generally, the source of chromium pollution in environment from waste water of coating industries, paint factory, ink factory, tanneries, oil refineries, textile mills, and also from ore refining process. Many research have been done to prevent and reduce chromium(VI) content in water such as using bark seed powder to adsorb chromium(VI) in batch and coloumn method [2], and using moringa seed as biofloculant to reduce chromium(VI) level [3], and adsorption using chitosan-alumina [4], chitosan-modified 1,3,5-tribenzoic acid [5], activated carbon [6], metal organic framework (MOF) [7], magnetic lignin [8], chitosan nanoparticle [9], multiwalled carbon nanotube [10], mesoporous magnetic nanosphere [11], hydroxyapatite-cellulose composite [12], mesoporous carbon microsphere [13], Fe-montmorillonite [14], and agricultural biomass [15].…”

Section: Introductionmentioning

confidence: 99%

The Ability of Benzoic Acid to Reduce Cr(VI) Heavy Metal Content in Aqueous Solution

Mustikarini

Rumhayati

Cahyani

2015

J. Pure App. Chem. Res.

View full text Add to dashboard Cite

Chromium (VI) is an ionic heavy metal which has to be handled properly when dissolved in water due to its toxicity, corosive, carsinogenic activity.. According to the State Minister for Population and Environment's regulation, the quality standards of waste water, which is allowed to be discharge on surface water contains Cr(VI) is 0.05-1 mg/L. This research used benzoic acid which is a kind of organic acid to reduce Cr(VI) content in water. Benzoic acid has an active carboxyl group which interact this metal. This paper, the elimination of Cr(VI) using benzoic acid is undertaken through pH adjustment by regulating with phosphoric acid. The result showed the best condition to reducing Cr(VI) content 41.99% when 400 ppm of benzoic acid and pH 7 was applied, respectively.

show abstract

Novel magnetic lignin composite sorbent for chromium(vi) adsorption

Abstract: A novel magnetic lignin composite removes Cr(vi).

Cited by 74 publications

References 42 publications

Removal of chromium from industrial effluents using nanotechnology: a review

Removal of chromium from industrial effluents using nanotechnology: a review

Fractionational and structural characterization of lignin and its modification as biosorbents for efficient removal of chromium from wastewater: a review

The Ability of Benzoic Acid to Reduce Cr(VI) Heavy Metal Content in Aqueous Solution

Contact Info

Product

Resources

About