Comparison Between Biosorbents for the Removal of Metal Ions From Aqueous Solutions

Williams, Colin H.; Aderhold, D.; Edyvean, R.G.J.

doi:10.1016/s0043-1354(97)00179-6

Cited by 153 publications

(53 citation statements)

References 23 publications

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“…Metallic element (ME) pollution is a major global concern since these inorganic contaminants are continuously released into the environment by human activities [1,2]. The ability of these compounds to be accumulated in the organisms and to trig the onset of diseases and disorders makes MEs very dangerous for many organisms, including humans, at very low concentrations [3].…”

Section: Introductionmentioning

confidence: 99%

Removal of metallic elements from real wastewater using zebra mussel bio-filtration process

Magni

Parolini

Soave

et al. 2015

Journal of Environmental Chemical Engineering

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A B S T R A C TThe metallic element pollution is a serious environmental problem but still unsolved since these contaminants are released mainly by human activity, reaching all the environmental compartments. Traditional wastewater treatment plants are very efficient in removing metallic elements only when their concentration is in the order of mg/L, but are not able to remove them until mg/L, as it would be needed to cope with the water quality standards in low flow receptors. Therefore, the aim of our study was to evaluate the potential removal of some recalcitrant metallic elements to the classical treatments, by the natural process of bio-filtration performed by the invasive zebra mussel (Dreissena polymorpha). For this purpose we built a pilot-plant at the Milano-Nosedo wastewater treatment plant, where we placed about 40,000 D. polymorpha specimens appointed to the wastewater bio-filtration. The metallic element removal due to zebra mussel activity was evaluated in the treated wastewater with a plasma optical emission spectrometry (ICP-OES). Data obtained in these experiments showed an encouraging metallic element removal due to D. polymorpha activity; in particular, the total abatement (100%) of Cr after one day of bio-filtration exposure is remarkable. Therefore, this study encourages further research related with the use of bivalves as a new tool for the wastewater depuration process; in this regard, the contaminated mollusks used in the bio-filtration could be incinerated or stored in special landfills, as is also the case of traditional sewage sludge.

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Section: Introductionmentioning

confidence: 99%

Removal of metallic elements from real wastewater using zebra mussel bio-filtration process

Magni

Parolini

Soave

et al. 2015

Journal of Environmental Chemical Engineering

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“…It was stored at -10˚C until used. Sodium chloride, potassium permanganate, sulphuric, hydrochloric and nitric acids, sodium hydroxide, ethanol, anthraquinone, H 2 ) ions in this study, were synthesized by keeping all the grafting reaction conditions constant and varying only the monomer concentration. Details of the conditions used as well as characterizations of PDMAEMRS are given in Table 1.…”

Section: Methodsmentioning

confidence: 99%

“…Cadmium, zinc, copper, nickel, lead, mercury and chromium and dyes are often detected in industrial waste waters, which originate from metal plating, mining activities, smelting, battery manufacture, tanneries, petroleum refining, paint manufacture, pesticides, pigment manufacture, printing, textiles and photographic industries [1,2]. Unlike organic wastes, heavy metals are non-biodegradable and they can be accumulated in living tissues, causing various diseases and disorders; therefore they must be removed before discharge.…”

Section: Introductionmentioning

confidence: 99%

Harnessing of Chemically Modified Rice Straw Plant Waste as Unique Adsorbent for Reducing Organic and Inorganic Pollutants

Mostafa¹,

Samarkandy²,

El-Sanabary³

2012

IJOC

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Conversion of rice straw (RS) as one of agricultural plant wastes (about 45% of the volume of rice production) to valuable industrial product was achieved, by grafting different amounts of dimethylaminoethyl methacrylate (DMAEM) on it using potassium permanganate/nitric acid redox system. This was done to obtain six levels of poly (DMAEM)-rice straw graft copolymers (PDMAEMRS) having different graft yields (expressed as N%) with increasing order and designated as (PDMAEMRS 1 to PDMAEMRS 6). The latter copolymers were dispersed in aqueous solution of heavy metal ions Cu (II) ions and filtered to form rice straw co-polymer-metal ions complex. Different factors affecting the heavy metal ions removal such as pH, extent of grafting, treatment time and rice straw dose were studied in detail. It was found from the obtained results that; the residual metal ions removal from their aqueous solutions increased with 1) Increasing the extent of grafting of PDMAEMRS i.e. from PDMAEMRS 1 to PDMAEMRS 6; 2) Increasing the pH of the metal ions solution complex from 1 to 8; 3) Increasing the rice straw dosage from 0.50 to 2.0 g, then leveled off thereafter; 4) Increasing the time of the reaction up to 20 minute then leveled off after that. On the other hand, Pb (II), Cd (II) and Hg (II) ions were also removed from their solutions with different extent. Furthermore, the prepared copolymer could be recovered by washing the metal ions from the complex with weak acid 1 N HNO 3 (pH 2) and the metal-binding activity of the rice straw was slightly reduced by this process. Finally, the ability of PDMAEMRS to remove three types of acid dyes from their solutions was also reported.

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“…[114][115][116] Most of the research focused on the heavy metal removal from industrial wastes. [117][118][119][120][121] A number of researchers have reported that the most empirical advantage of using biosorption is cost efficient due to the application of natural biomass to separate the RE element. [122][123][124][125][126][127] Table 3 summarizes the results of several research carried out, i.e., amongst the major studies published on REE biosorption.…”

Section: Bio-sorptionmentioning

confidence: 99%

A Review of Rare Earth Mineral Processing Technology

Suli

Ibrahim

Aziz

et al. 2017

Chem. Eng. Res. Bull.

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Abstract:The recent technological advancement has made the rare earth elements (REEs) more significant and they in turn have facilitated the culmination of more new technological applications owing to their unique physical and chemical properties. In this regard, renewable energy applications such as wind turbine and hybrid cars testify to the increasing demands on permanent magnet in the future. Considering such increasing demands on REEs, it is felt necessary to identify alternative producers of REEs outside of China as one of the measures to create a fair competition and control the price on the market. It is worth highlighting that the separation of rare earth can be both complex and challenging owing to similar properties which are shared by them. The purpose of this paper is to comprehensively review and summarize the rare earth processing routes, the mostly employed rare earth separation methods, supply and demand of rare earth around the world and some possible scenarios in rare earth market. This review has critically looked into a few authors' recent reviews on six major processes of rare earth processing steps and each step is considered as important to produce both high quality and better quantity of REEs.

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Comparison Between Biosorbents for the Removal of Metal Ions From Aqueous Solutions

Cited by 153 publications

References 23 publications

Removal of metallic elements from real wastewater using zebra mussel bio-filtration process

Removal of metallic elements from real wastewater using zebra mussel bio-filtration process

Harnessing of Chemically Modified Rice Straw Plant Waste as Unique Adsorbent for Reducing Organic and Inorganic Pollutants

A Review of Rare Earth Mineral Processing Technology

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