Remediation and Liquid-Liquid Phase Transfer Extraction of Chromium(VI). A Review

2004 ◽  
Vol 69 (6) ◽  
pp. 1231-1250 ◽  
Author(s):  
Shahabuddin Memon ◽  
D. Max Roundhill ◽  
Mustafa Yilmaz
Keyword(s):  
Phase Transfer ◽  
Human Health Risk ◽  
Liquid Extraction ◽  
Review Article ◽  
Chromium Vi ◽  
Chromium Plating ◽  
Liquid Liquid Extraction ◽  
Increased Risk ◽  
Dichromate Anions ◽  
The Relationship

Chromium(VI) is a widely used industrial chemical, and is generally considered to pose a greatest human health risk because it is more toxic, more soluble, and more mobile than chromium(III). Workers in industries that use chromium, in particular stainless steel welding, chromate production, chromium plating, and chrome pigment industries, where exposure via inhalation of aerosols is primarily to hexavalent chromium, are at increased risk of chromium effects. In this article we demonstrate various studies regarding remediation methods in particular liquid-liquid extraction of chromate and dichromate anions with various functionalized calixarenes. This review article briefly discusses various molecular designs of calixarene-type macrocycles for chromium(VI) oxoanion recognition, and gives examples on the relationship between structure and selectivity. The article does not, however, attempt to cover all of the different approaches to chromium(VI) extraction. A review with 73 references.

A hydrogen bond-modulated soft nanoscale water channel for ion transport through liquid-liquid interfaces

Soft Matter ◽  
2021 ◽  
Author(s):  
Boyao Wen ◽  
Chengzhen Sun ◽  
Zhengyuan Luo ◽  
Xi Lu ◽  
Haibo Wang ◽  
...  
Keyword(s):  
Ion Transport ◽  
Oil Recovery ◽  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
Water Channel ◽  
Liquid Extraction ◽  
Liquid Interfaces ◽  
Liquid Liquid Extraction ◽  
Stabilization Phase ◽  
Emulsion Stabilization

Ion transport through interfaces is of ubiquitous importance in many fields such as electrochemistry, emulsion stabilization, phase transfer catalysis, liquid-liquid extraction and enhanced oil recovery. However, the knowledge of interfacial...

Liquid-Liquid Extraction/Recovery of Chromium(VI) From Some Industrial Waste Solutions Using Alamine 336 in Kerosene

2012 ◽  
Vol 33 (8) ◽  
pp. 1179-1187 ◽  
Author(s):  
Omnya M. El-Hussaini ◽  
Tayseer A. Lasheen ◽  
Evon M. Helmy ◽  
Mohamed A. Hady ◽  
Al-Sayed A. Manaa
Keyword(s):  
Industrial Waste ◽  
Liquid Extraction ◽  
Extraction Recovery ◽  
Chromium Vi ◽  
Liquid Liquid Extraction ◽  
Alamine 336

scholarly journals Is Periodontitis a Risk Predictor with Adverse Outcomes for Cardiovascular Diseases: Treat Gums, Save Heart

2021 ◽  
Vol 11 (9) ◽  
pp. 237-245
Author(s):  
Ashutosh Nirola ◽  
Priyanka Batra ◽  
Priyanka Singla
Keyword(s):  
Cardiovascular Diseases ◽  
Review Article ◽  
Adverse Outcomes ◽  
Current Evidence ◽  
High Quality ◽  
Increased Risk ◽  
Bidirectional Relationship ◽  
Risk Predictor ◽  
The Relationship ◽  
Key Words Periodontitis

Different clinical researches have been carried out to find the relationship between Cardiovascular diseases (CVD) and Periodontitis. Even the findings and study types of these studies haven't been inconsistent, most of them indicated that the periodontitis may be associated with an increased risk of Cardiovascular diseases. The purpose of this review article is to find the strength of the association between CVD and periodontitis. The current evidence supports the significant presence of association between CVD and periodontitis. Also it's seen that CVD patients had worse periodontal and oral hygiene status and fewer teeth than control subjects. Thus we need to conduct more high-quality and well-designed studies focusing on the specific/bidirectional relationship between CVD and periodontitis in the future. Key words: Periodontitis, Cardiovascular diseases, Risk factor, Mechanism and Association.

scholarly journals Unexpected Inverse Correlations and Cooperativity in Ion-pair Phase Transfer

2021 ◽  
Author(s):  
Nitesh Kumar ◽  
Aurora Clark
Keyword(s):  
Phase Transfer ◽  
Liquid Extraction ◽  
Ion Pair ◽  
Transport Mechanisms ◽  
Separation And Purification ◽  
Solute Partitioning ◽  
Liquid Liquid Extraction ◽  
Purification Methods

Liquid/liquid extraction is one of the most widely used separation and purification methods, where a forefront of research is the study of transport mechanisms for solute partitioning and the relationships...

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