scholarly journals Action plan for responses to abnormal conditions in Hanford Site radioactive waste tanks with high organic content. Revision 1

1993 ◽  
Author(s):  
K.D. Fowler
Keyword(s):  
Radioactive Waste ◽  
Action Plan ◽  
Organic Content ◽  
Hanford Site ◽  
Waste Tanks ◽  
High Organic Content

scholarly journals Uranium-series isotopes from Eemian lake deposits, Hollerup, Denmark

1998 ◽  
Vol 44 ◽  
pp. 173-179
Author(s):  
C. Israelson ◽  
S. Bjorck ◽  
N. Noe Nygaard ◽  
C. J. Hawkesworth
Keyword(s):  
Ground Water ◽  
Lake Sediments ◽  
Sedimentary Facies ◽  
Organic Content ◽  
Time Interval ◽  
Decay Products ◽  
Large Spread ◽  
Isotope Study ◽  
Lake Deposits ◽  
High Organic Content

We report the results of a U-series isotope study on Eemian lake sediments from Hollerup, western Denmark. The purpose is to examine the possibility of dating these, and similar, sediments with the 238U-23"h method. Two sedimentary facies were studied; carbonate-present, and virtually carbonate-free but organic-rich sediments. All carbonate-present sediments (5-95%) have (230ThP38U) values higher than unity and relatively radiogenic (23"W232Th) values between 2 and 6.5, indicating postdeposition removal of U, probably by percolation of ground water. Carbonate-free sediments, but with high organic content (40-60%) had (230Th/238U) values lower than 1 and 'model ages' between 89 and 199 ky. The large spread in ages and variation in U content for these sediment samples that were deposited over a much shorter time interval, indicate a complex postdepositional migration pattern of U, probably involving several episodes of leaching and absorption of U from ground water. Our results suggest that lake sediments, such as those found in Hollerup, are vulnerable to mobilization of U and its decay products and care should be taken when interpreting U-series disequilibrium data from such sediments. Future studies will concentrate on sediments that have been more deeply buried andor are less compacted and sealed from percolation of oxidized groundwater.

scholarly journals Sosialisasi Pengelolaan Limbah Dapur Serta Program 3R (Reuse, Reduce, Recycle) Bagi Pemilik Rumah Makan dan Jasa Boga di Wilayah Kota Tasikmalaya

2018 ◽  
Vol 1 (2) ◽  
pp. 53-62
Author(s):  
Melly Mellyanawaty ◽  
Estin Nofiyanti ◽  
A Ibrahim ◽  
N Salman ◽  
N Nurjanah ◽  
...  
Keyword(s):  
Solid Waste ◽  
Energy Requirement ◽  
Organic Content ◽  
Limited Area ◽  
Solid Waste Disposal ◽  
Kitchen Waste ◽  
Egg Shells ◽  
Cooked Food ◽  
Pre Treatment ◽  
High Organic Content

Society services activity in kitchen waste management system has been implemented to the owner of restaurant and catering work in Tasikmalaya City area. This activity has colaborated with Indonesian Catering Associations (APJI). The rapid growth of restaurant and catering activities has created serious problems of energy requirement, water, and solid waste disposal. Less information and limited area become the problems in handling of kitchen waste. A simple technique is needed to overcome the environmental problem which is caused by kitchen waste. The components of kitchen waste include vegetables, peelings, fruit skins, spoilt fruit, cooked and uncooked meat, bones, fats, egg-shells, bread and pastries, cooked food waste, etc. Due to a high organic content, bioconversion technologies such as anaerobic digestion are more suitable to handle the waste convert to biogas. It would be reducing the LPG usage. For the kitchen wastewater, grease trap as pre-treatment followed by a physical and biological process is one of a simple process which can produce the effluent in accordance with government standard. The activities were continued by the socialization of 3R program (reuse, reduce, recycle) by doing demo utilization of kitchen solid waste such as packing material, mineral water bottle is made a handicraft. Knowledge transfer run well and the enthusiasm of the participants in following the activity were very good.

Erosion resistance and behaviour of highly organic in-sewer sediment

2013 ◽  
Vol 69 (3) ◽  
pp. 672-679 ◽  
Author(s):  
I. Seco ◽  
M. Gómez Valentín ◽  
A. Schellart ◽  
S. Tait
Keyword(s):  
Organic Content ◽  
Natural Environments ◽  
Time Varying ◽  
Storm Events ◽  
Dry Period ◽  
Sewer Systems ◽  
Organic Sediment ◽  
Combined Sewer ◽  
Tank Design ◽  
High Organic Content

Reliable prediction of time-varying pollutant loads in combined sewer systems during storm periods can aid better management of the release of pollution into natural environments as well as enhancing storage tank design. Better understanding of the behaviour of sewer sediments is crucial for the development of models that adequately describe the transport of in-sewer solids and accurately predict the changes in pollutant concentration within combined sewers during storm events. This paper reports on the results of a test programme to examine the erosion of highly organic sewer sediment under the application of time-varying shear stress. The tests were carried out with and without supplying oxygen, and varying simulated dry-weather periods. The aim was to investigate the behaviour of real in-sewer sediment with a high organic content (around 80%) in an attempt to improve prediction of the transport rates under the particular Mediterranean conditions of long dry-period/build-up and intense rainfall/wash-off, and understand how this environment affects the erosional resistance and subsequent sediment release. Results have been compared with previous work on lower organic content sewer sediments and artificial organic sediment.

scholarly journals Glycan-specific precipitation of glycopeptides in high organic content sample solvents used in HILIC

2020 ◽  
Vol 1150 ◽  
pp. 122196
Author(s):  
Petr Kozlik ◽  
Katarina Molnarova ◽  
Tomas Jecmen ◽  
Tomas Krizek ◽  
Radoslav Goldman
Keyword(s):  
Organic Content ◽  
High Organic Content

scholarly journals Stabilization of High-Organic-Content Water Treatment Sludge by Pyrolysis

Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3292 ◽  
Author(s):  
Ye-Eun Lee ◽  
I-Tae Kim ◽  
Yeong-Seok Yoo
Keyword(s):  
Heavy Metal ◽  
Water Treatment ◽  
Algal Blooms ◽  
Xrd Analysis ◽  
Organic Content ◽  
Metal Leaching ◽  
Water Treatment Sludge ◽  
Heavy Metal Leaching ◽  
Inorganic Matter ◽  
High Organic Content

Water treatment sludge from algal blooms were analyzed and compared with general water treatment sludge as the pyrolysis temperature was varied from 300 °C to 900° C. Elemental analysis showed that the water treatment sludge in the eutrophication region has ~12% carbon content, higher than that (8.75%) of general water treatment sludge. X-ray diffraction (XRD) analysis of both types of sludge showed that amorphous silica changed to quartz and weak crystalline structures like kaolinite or montmorillonite were decomposed and changed into stronger crystalline forms like albite. Fourier transform infrared spectroscopy (FT-IR) peaks of humic/fulvic acid that indicated the affinity to combine with heavy metals disappeared above 700 °C. Toxicity characteristic leaching procedure (TCLP), conducted to determine the heavy metal leaching amount of pyrolyzed water treatment sludge, showed the lowest value of 5.7 mg/kg at 500 °C when the humic acid was not decomposed. At 500 °C, the heavy metal leaching ratio to the heavy metal content of high organic content water treatment sludge and low organic content water treatment sludge were 1.87% and 3.19%, respectively, and the water treatment sludge of higher organic content was more stable. In other words, pyrolysis of water treatment sludge with high organic content at 500 °C increases the inorganic matter crystallinity and heavy metal leaching stability.

Removal of Salmonella Typhi, Shigella Dysenteriae, Vibrio Cholerae and Rotavirus from Water Using a Water Treatment Tablet

1993 ◽  
Vol 27 (3-4) ◽  
pp. 347-350 ◽  
Author(s):  
N. Rodda ◽  
B. Bateman ◽  
R. Kfir
Keyword(s):  
Vibrio Cholerae ◽  
Treatment Time ◽  
Hard Water ◽  
Salmonella Typhi ◽  
Organic Content ◽  
Shigella Dysenteriae ◽  
Polluted Water ◽  
Recommended Treatment ◽  
Individual Use ◽  
High Organic Content

Chlor-floc tablets are intended for purification of small quantities of water for individual use by combined flocculation and disinfection. Removal of Escherichia coll E25, various viruses and Giardia cysts from polluted water by Chlor-floc has been previously demonstrated. This study evaluated the efficiency of removal of Salmonella typhi, Shigella dysenteriae, Vibrio cholerae and rotavirus from simulated hard water of high organic content and colour. All four pathogenic microorganisms were successfully removed within the recommended treatment time. Log removals of 7-8 log were achieved for bacterial pathogens, and a removal of 6.5 log was obtained for rotavirus.

scholarly journals Review of the Scientific Understanding of Radioactive Waste at the U.S. DOE Hanford Site

2018 ◽  
Vol 52 (2) ◽  
pp. 381-396 ◽  
Author(s):  
Reid A. Peterson ◽  
Edgar C. Buck ◽  
Jaehun Chun ◽  
Richard C. Daniel ◽  
Daniel L. Herting ◽  
...  
Keyword(s):  
Radioactive Waste ◽  
Scientific Understanding ◽  
Hanford Site ◽  
The U.S
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