scholarly journals Long-Term Leaching Behavior of Marine Sediment by a Large Column Percolation Test

2020 ◽  
Vol 69 (1) ◽  
pp. 53-56
Author(s):  
Toru INUI ◽  
Mutsumi HORI ◽  
Takeshi KATSUMI ◽  
Atsushi TAKAI
Keyword(s):  
Marine Sediment ◽  
Leaching Behavior ◽  
Percolation Test

scholarly journals Leaching behavior of naturally-contained arsenic in marine sediment by the long-term column percolation test

2020 ◽  
Vol 15 (4) ◽  
pp. 675-682
Author(s):  
Jun’ichi KATAYAMA ◽  
Toru INUI ◽  
Takeshi KATSUMI ◽  
Atsushi TAKAI
Keyword(s):  
Marine Sediment ◽  
Leaching Behavior ◽  
Percolation Test

Assessment the leaching characteristics and long-term leaching behavior of some radionuclides from synthesized zeolite cement matrix

2021 ◽  
Vol 143 ◽  
pp. 106357
Author(s):  
N.M. Sami ◽  
O.A. Abdel Moamen ◽  
M.I. El-Dessouky ◽  
A.M. El-Kamash
Keyword(s):  
Cement Matrix ◽  
Leaching Behavior ◽  
Leaching Characteristics

scholarly journals An Evaluation of the Long-term Leaching Behavior of Heavy Metals from Granulated Incineration Ash

2020 ◽  
Vol 15 (3) ◽  
pp. 471-478
Author(s):  
Satoshi SHINOHARA ◽  
Tatsushi KAWAI ◽  
Daisuke ISHIGAMI ◽  
Junichi KAWABATA ◽  
Takeshi SATO ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Leaching Behavior

Prediction of the Deterioration Depth of Concrete by Accelerating Calcium Leaching Test

2011 ◽  
Vol 365 ◽  
pp. 3-7 ◽  
Author(s):  
An Cheng ◽  
Sao Jeng Chao ◽  
Wei Ting Lin ◽  
Jia Liang Chang
Keyword(s):  
Nitrate Solution ◽  
Leaching Behavior ◽  
Calcium Leaching ◽  
Ammonium Nitrate Solution ◽  
Binder Ratio ◽  
Two Stages ◽  
Strength And Durability ◽  
Calcium Ion Leaching ◽  
Water Binder Ratio

The concrete is a solid and porous composite materials, when the concrete exposure to moisture environment for a long-term, the pore water will penetrate into concrete cause hydration products leaching. Leaching of calcium ions increase in porosity and resulting in harmful ions ingress into concrete to reduce strength and durability of concrete. The purpose of this study is to evaluate the effect of water-binder ratio on calcium ion leaching behavior of cement-based material. The ammonium nitrate solution was used to accelerate leaching process. Leaching duration was 56 days, 91 days and 140 days, respectively. The leaching depth and compressive strength were measured. The results showed that leaching resistance increased with a decrease in water/binder ratio. The leaching depth showed that leaching behavior of the specimens without minerals admixtures can be divided into two stages, the first stage was leaching of calcium hydroxide and than the C-S-H gel were leaching.

scholarly journals Determination of Chlorobiphenyls in Seal Blubber, Marine Sediment, and Fish: Interlaboratory Study

1996 ◽  
Vol 79 (1) ◽  
pp. 83-96 ◽  
Author(s):  
Jacob De Boer ◽  
Jaap Van Der Meer ◽  
Udo A Th Brinkman
Keyword(s):  
Muscle Tissue ◽  
Marine Sediment ◽  
Standard Error ◽  
Principal Component ◽  
Fish Muscle ◽  
Interlaboratory Study ◽  
Lean Fish ◽  
Seal Blubber Oil

Abstract Between 1988 and 1994, the International Councilfor the Exploration of the Sea, the Intergovernmental Oceanographic Commission, and the Oslo and Paris Commissions organized a stepwise interlaboratory study for determination of chlorobiphenyls (CBs) inmarine media. The final parts of this study, in which 53 laboratories from 14 countries participated, focused on long-term precision, cleanup, and extraction. Calibration was controlled continuously by analysis of 10 CBs in an unknownsolution. Participants were requested toanalyze 3 CBs in a certified reference material fish oil (6 times); 10 CBs in cleaned and uncleaned marine sediment and seal blubber extracts; and 10 CBs in seal blubber oil, dried marine sediment, and wet, lean fish muscle tissue. The long-term precision study showed that, compared with earlier exercises in which only duplicate analyses were required, repeatability increased about 1.5-fold compared with reproducibility. The mean standard error for reproducibility of determination of 10 CBs in standard solutions improved from 1.22 to 1.15. The standard error improved from 1.36 to 1.28(without CBs 28 and 31) for seal blubberoil and from 1.36 to 1.22 for dried marine sediment. In seal blubber oil and dried marine sediment, the major CBs 118,138,153, and 180 can now bedetermined by thegroup of participating laboratories with a reproducibility of 1.5 (about 50%). No significant differences were found between results for cleaned-up and un cleaned extracts. No acceptable results could be obtained for determination ofCBs in lean fish muscle tissue. Biplots of principal component analyses are extremely helpful in evaluating the data generated by this type of study.

Nd- and Ce-doped ceramic-glass composites: chemical durability under aqueous conditions and Surface alteration in a moist clay medium at 90°C

2000 ◽  
Vol 663 ◽  
Author(s):  
P.J. Mcglinn ◽  
T. Advocat ◽  
E. Loi ◽  
G. Leturcq ◽  
J.P. Mestre
Keyword(s):  
Chemical Durability ◽  
Powdered Sample ◽  
Leaching Behavior ◽  
Glass Composites ◽  
Geological Repository ◽  
Trivalent Actinides ◽  
Surface Alteration ◽  
Ceramic Glass ◽  
Aqueous Conditions

ABSTRACTZirconolite-glass and sphene -glass specimens, doped with REE as simulants for trivalent actinides, were leached under two conditions. The first was a solubility test using a powdered sample in deionized water at an SA/V ratio of 200 cm−1, to examine the long-term leaching behavior of the composite materials. The other test was carried out in the presence of moist clay, to assess the degree of surface alteration of the composites in the presence of potential geological repository materials. Both tests were carried out at 90°C.

Long Term Leaching Behavior of Antimony from MSWI Bottom Ash: Influence of Mineral Additives and of Organic Acids

2016 ◽  
Vol 8 (7) ◽  
pp. 2545-2552 ◽  
Author(s):  
Bram Verbinnen ◽  
Jo Van Caneghem ◽  
Pieter Billen ◽  
Carlo Vandecasteele
Keyword(s):  
Organic Acids ◽  
Bottom Ash ◽  
Leaching Behavior ◽  
Mswi Bottom Ash ◽  
Mineral Additives
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