TECHNICAL REPORT ON RSH-S014 REACTIVITY WITH WATER

Date of Report: August 7, 2015

Date of experiment: August 5, 2015

Prepared by: Mr. Mashud Ali Iskak (LF Chemist)

Submitted to: Waste Management Division/ Beeah

Objective: This study is conducted to determine the reactivity of RSH-S014 (Slag Waste) with water.

Waste Description and method of sampling:

Each shipment of this slag waste was unloaded separately at the top of landfill. The received slag was in ambient temperature. 500ml of sample bottle was filled with the waste after unloading. Sample was taken at least from the four sides/corner of the waste. Slag waste was generally in gray color, varying from powder to granulated solid with lumps. Sometimes, slab size of around 1.5m by 2.0m was also received along with some granulated solids.

Equipment used:

Weighing scale (0.02-60 KG)Thermometer (0-200 oC)Lighter

Quantity of Slag waste & water:

Quantity of slag waste: approx. 1 kgQuantity of water: as per the required in blending

Reactivity with Water:

Procedure:Weight of the slag waste sample was measured and recorded. Wash bottle was filled with tap

water and then initial weight was taken. Using the wash bottle, small quantity of water was sprayed on the sample and observation was noted. Enough quantity of water was then added until the slag waste became wet. Wash bottle was then weighed to get the total weight of water that was being added. Thermometer was put on the specimen (see the set-up). The prepared sample was then kept open at the outside while its temperature was read and recorded from time to time. Observation was then continuously made after 12hours.

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Data and Results:

Sample No. 1:     Man. # 190948WBT # 237439   Weight of Slag waste 0.72 kgWeight of water used 0.16 kg   Ambient Temperature 40oc   Time preparation: 9:58AM   

TimeTemperature, oC

9:58AM 4011:30AM 4412:15AM 5412:30PM 6212:40PM 8012:50PM 9601:30PM 70

Sample No. 2:     Man. # 190944WBT # 237443   Weight of Slag waste 0.78 kgWeight of water used 0.16 kg   Ambient Temperature 36oc   Time preparation: 2:50PM   

TimeTemperature, oC

2:50PM 364:20PM 444:50PM 585:00PM 925:03PM 965:06PM 1025:10PM 1045:35PM 965:43PM 885:50PM 826:00PM 74

Sample No. 3:  

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   Man. # 190949WBT # 237452   Weight of Slag waste 0.74 kgWeight of water used 0.20 kg   Ambient Temperature 36oc   Time preparation: 2:55PM   

TimeTemperature, oC

2:55PM 364:51PM 485:15PM 685:24PM 825:30PM 905:38PM 1025:42PM 1035:50PM 1026:60PM 100

Sample No. 4:     Man. # 195301WBT # 237437   Weight of Slag waste 0.66 kgWeight of water used 0.16 kg   Ambient Temperature 36oc   Time preparation: 03:10PM   

TimeTemperature, oC

3:10PM 364:52PM 445:17PM 506:05PM 666:15PM 73

Sample No. 5:     

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Man. # 190945WBT # 237459   Weight of Slag waste 0.74 kgWeight of water used 0.18 kg   Ambient Temperature 36oc   Time preparation: 3:15PM   

TimeTemperature, oC

3:15PM 364:53PM 435:23PM 466:25PM 66

Sample No. 6:     Man. # 190950WBT # 237457   Weight of Slag waste 0.64 kgWeight of water used 0.14 kg   Ambient Temperature 36oc   Time preparation: 3:20PM   

TimeTemperature, oC

3:20PM 366:26PM 44

Sample No. 7:     Man. # 190946WBT # 237435   Weight of Slag waste 0.74 kgWeight of water used 0.2 kg   Ambient Temperature 36oc   Time preparation: 3:25PM   

TimeTemperature, oC

3:25PM 366:28PM 48

Sample No. 8:     

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Man. # 190947WBT # 237453   Weight of Slag waste 0.70kgWeight of water used 0.18 kg   Ambient Temperature 36oc   Time preparation: 3:30PM   

TimeTemperature, oC

3:30PM 366:05PM 846:15PM 98

General Observations:

- While spraying the small quantity of water, some smokes produce with toxic smell of gas indicates that reaction occurs.

- After adding an enough quantity of water, a presence of bubbles with gradual increase of temperature until all water reacted with the waste.

- A very toxic smell of gas has been produced that even a filter mask is not enough to filter it. Release of toxic gas increases with temperature.

- The Quantity of gas produced during the reaction is not flammable.- After the specimen cooled down, the specimen formed like a solidified.- Even after 48 hours, toxic gas is still present, there is a white particles formed at the top of each

specimen.

Conclusions:

It is therefore concluded that RSH-S014 (Slag Waste) is reactive with water. This indicates that the reactive materials are present in the waste. A very toxic gas has been produced during the reaction. Generally, the slag waste reaction with water occurs after sometimes. Reactivity with water may vary in each shipment.

Recommendation:

1. The experiment is extremely dangerous that appropriate PPE and equipment must be considered.

2. Further study of the toxic gas produced in the reaction must be conducted, such as qualitative and quantitative analysis must be considered.

3. Components of the reactive materials must be identified.4. Proper treatment to secure the total deactivation of the reactive components must be known

prior to final disposal to landfill.5. White solid material formed at top of each specimen must be identified.

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Pictures attachment

A. Experiment set-up

B. After 3 hours of Adding water

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C. After 12 hours of adding water

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