Flocculation studies on freshly precipitated copper ferrocyanide for the removal of caesium from radioactive liquid waste

Sinha, Pradeep K.; Amalraj, R.V.; Krishnasamy, V.

doi:10.1016/0956-053x(93)90063-3

Cited by 28 publications

(18 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The presence of EDTA in decontamination wastes can cause complexation of the cations resulting in interferences with their removal by various treatment processes, for example chemical precipitation, ion exchange, etc. [1,2]. Further, it might also result in greater leachability and higher mobility of cationic contaminants from the conditioned wastes, i.e.…”

Section: Introductionmentioning

confidence: 93%

Photodegradation of EDTA using Fenton’s reagent: a pilot-scale study

2011

View full text Add to dashboard Cite

The presence of ethylenediaminetetraacetic acid (EDTA) in decontamination wastes can cause complexation of cations resulting in interferences in their removal by various treatment processes, for example chemical precipitation, ion exchange, etc., and can negatively affect the quality of the final form of the waste. Advanced oxidation processes using ozone, H 2 O 2 , ultrasonics (US), ultraviolet (UV) light, Fenton's reagent (Fe(II) ? H 2 O 2 ), alone or in combination, are regarded as possible methods of clean and ecologically safe remedial treatment for the degradation of organics. In this study, the development of a column photoreactor (15 L) and a shallow-tank photoreactor (100 L) was carried out at the Centralised Waste Management Facility, Kalpakkam, India. Pilot-scale (batch) studies of the photocatalytic degradation of EDTA (20,000 mg/L) using UV ? Fenton's reagent in these reactor geometries were attempted. The effect of the power of the UV radiation on the kinetics of photodegradation of EDTA (20,000 mg/L) was studied using the column photoreactor. The shallow-tank reactor was used to study the photodegradation of EDTA (20,000 mg/L) using UV radiation, visible radiation, and sunlight. The successful use of sunlight as a source of energy and its greater effectiveness than UV radiation in the treatment of EDTA are presented.

show abstract

Section: Introductionmentioning

confidence: 93%

Photodegradation of EDTA using Fenton’s reagent: a pilot-scale study

2011

View full text Add to dashboard Cite

show abstract

“…However, pure Cu 2 Fe(CN) 6 ·xH 2 O could be acquired through careful washing procedures [5,11]. The product prepared in this paper was Cu 2 Fe(CN) 6 ·7H 2 O, as determined by XRD analysis and compared with JCPDS-ICDD 1.0244.…”

Section: Characterizations Of the Adsorbentmentioning

confidence: 99%

“…In recent decades, CuFC has been widely used for the removal of cesium from liquid waste [4,[7][8][9][10][11][12][13][14]. The key for using CuFC as an adsorbent for cesium removal was to separate the saturated adsorbents from the liquid waste, which is particularly challenging because of the small size of the CuFC particles.…”

Section: Introductionmentioning

confidence: 99%

Removal of cesium from simulated liquid waste with countercurrent two-stage adsorption followed by microfiltration

Han¹,

Zhang²,

Gu³

2012

Journal of Hazardous Materials

View full text Add to dashboard Cite

“…An aqueous solution of citric acid monohydrate 50 cm 3 (1 mmol L −1 ) was prepared in distilled water and its pH was adjusted with H 2 SO 4 and NaOH. It was then added to the reactor together with the Fe-MCM-41 catalyst (0.2 g).…”

Section: Oxidation Experimentsmentioning

confidence: 99%

“…During chemical treatment the complexing agent present at a concentration ≥10 ppm interferes with the removal of activity by complexing with the precipitant and the separation of phases are adversely affected. 3 Further, it might also cause elevated leachability and higher mobility to the cationic contaminants from the conditioned wastes, i.e. waste immobilized in cement or other matrices, that can negatively influence the quality of the final form of waste.…”

Section: Introductionmentioning

confidence: 99%