Zeolite and bentonite as nickel sequestrants in carbonation lime coming from the sugar industry.

08:00 EDT 23rd March 2020 | BioPortfolio

Summary of "Zeolite and bentonite as nickel sequestrants in carbonation lime coming from the sugar industry."

A laboratory trial was performed to test the sequestration capacity of two minerals (bentonite and zeolite) at three initial concentrations (2.5, 5 and 10%) in order to counter water-soluble nickel (Ni) exceeding the Italian legal limit (10 μg L) in carbonation lime disposed of in a field and sampled for an 85-day lab study. The results show a noticeable reduction in water-soluble and bioavailable Ni in lime after the addition of sequestrants, especially at the dose of 5% bentonite or zeolite, thereby indicating a "ceiling effect" of the sequestrant, i.e., an increasing dose could reduce the adsorption capacity and be less effective. The alkaline pH and the presence of organic matter could be the main factors affecting the good performance of sequestrant addition, causing an increase in the negative charge of the organic and mineral colloids and the formation of unavailable Ni precipitates. The 85-day experiment seems to be sufficient to reach an adsorption equilibrium for water-soluble nickel, while for the bioavailable form a longer period appears to be necessary.


Journal Details

This article was published in the following journal.

Name: Environmental science and pollution research international
ISSN: 1614-7499


DeepDyve research library

PubMed Articles [586 Associated PubMed Articles listed on BioPortfolio]

Evaluation of the impact of soil contamination with mercury and application of soil amendments on the yield and chemical composition of L.

The purpose of this study was to determine the effect of soil contamination with Hg on the yield and chemical composition of L. Mercury was incorporated into soil in amounts: 0, 50, 100 and 150 mg Hg...

The permeability of dredged material-bentonite backfills.

Extensive attention has been paid to the treatment and disposal of dredged material, and there is a need to clarify the feasibility of recycling dredged material by using it as backfill in soil-benton...

Simultaneous removal of ammonia and phosphate using green synthesized iron oxide nanoparticles dispersed onto zeolite.

Since elevated levels of common nutrients, such as ammonia and phosphate, in natural water bodies (lakes and rivers) can lead to significant deterioration of pristine water ecosystems due to eutrophic...

Quantitative analysis of adsorption and desorption of volatile organic compounds on reusable zeolite filters using gas chromatography.

In this study, we propose a method to quantitatively analyze the concentration of VOCs adsorbed on zeolite filters via gas chromatography (GC). The sampled VOCs from the filters with ethanol as a solu...

Removal of platinum (IV) from aqueous solutions with yeast-functionalised bentonite.

There is a need for cheap but, efficient methods for the removal of precious metals from wastewaters, which are normally lost during mineral processing. Moreover, the disposal of yeast waste from brew...

Clinical Trials [51 Associated Clinical Trials listed on BioPortfolio]

Short Repeated Nickel Exposures

The former Nickel Directive was introduced in EU in 1994 limiting the release of nickel from items intended for prolonged contact with skin. The nickel regulation entered into full force i...

Effect of a Nickel Free Diet and Nickel Sensitization on GERD Patients.

There is little evidence on the effect of a nickel-free diet on gastroesophageal reflux disease (GERD). We hope to determine if a nickel-free diet improves GERD symptoms in patients with a...

Nickel Sensitivity

The purpose of this study is to compare clinical outcomes of patients with self reported nickel sensitivity undergoing primary total knee arthroplasty (TKA) with conventional, standard-of-...

Treatment of Osteoporosis - TOP1 Clinical Study

This study investigates the effect of zeolite on bone mineral metabolism. The clinical parameters include bone mineral density, bone remodelling markers, fractures and fallings, the subjec...

Garlic With Lime Juice and Chlorhexidine Mouthwash

the study about herbal mouthwash. it is clinical trial .the investigator will compare between chlorhexidine mouthwash and garlic with lime juice mouthwash.and their effect on gingival blee...

Medical and Biotech [MESH] Definitions

A plant species of the genus CITRUS, family RUTACEAE that provides the familiar lime fruit. Its common name of lime is similar to the limetree (TILIA).

Specific alloys not less than 85% chromium and nickel or cobalt, with traces of either nickel or cobalt, molybdenum, and other substances. They are used in partial dentures, orthopedic implants, etc.

A colloidal, hydrated aluminum silicate that swells 12 times its dry size when added to water.

Zeolites. A group of crystalline, hydrated alkali-aluminum silicates. They occur naturally in sedimentary and volcanic rocks, altered basalts, ores, and clay deposits. Some 40 known zeolite minerals and a great number of synthetic zeolites are available commercially. (From Merck Index, 11th ed)

Organometallic compounds that generally consist of two cylcopentadiene ANIONS joined in their centers by a metallic cation such as NICKEL; IRON; or TITANIUM.

Quick Search

DeepDyve research library

Relevant Topic

Within medicine, nutrition (the study of food and the effect of its components on the body) has many different roles. Appropriate nutrition can help prevent certain diseases, or treat others. In critically ill patients, artificial feeding by tubes need t...

Searches Linking to this Article