•  Bottom Ash Synonyms:

Bottom ash clinker, coal boiler bottom ash, furnace bottom ash, fba, arsenic removal using bottom ash, aruba, screened bottom ash, bottom ash blasting grit, bottom ash seal coat, botnaska, die bettasche, ceneri pesanti, cenizas de fondo de horno,

• Bottom Ash Chemical Formulas:

SiO2 (Amorphous & Crystalline)+ Al2O3 + Fe2O3 + CaO + MgO + TiO2

•  Bottom Ash Description:

1) The non-airborne combustion residue from burning pulverized coal in a boiler; the material which falls to the bottom of the boiler and is removed mechanically; a concentration of non-combustible materials, which may include toxics.

2) Bottom ash refers to the non-combustible constituents of coal with traces of combustibles embedded in forming clinkers and sticking to hot side walls of a furnace during the furnace working. The clinkers fall by themselves into the water or sometimes by poking manually, and get cooled.

3) The clinker lumps get crushed to small sizes by clinker grinders mounted under water and fall down into a trough from where a water ejector takes them out to a sump. From there it is pumped out by suitable rotary pumps to dumping yard far away. In another arrangement a continuous link chain scrapes out the clinkers from under water and feeds them to clinker grinders outside the bottom ash hopper. 

• Bottom Ash Typical Chemical Properties Available:

Silica – SiO2 (50–60 %)
Crystalline (2-4%)
Amorphous (46-58%)
Crystalline:
Quartz (Respirable) 10 mg/m3
CAS 14808-60-7 % SiO2 + 2
Quartz (Total) 30 mg/m3
% SiO2 + 2
Amorphous 80 mg/m3
% SiO2
Crystalline:
Quartz (Respirable) 0.05 mg/m3
CAS 14808-60-7
Cristobalite (Respirable) 0.05
mg/m3
CAS 14464-46-1
Tridymite (Respirable) 0.05
mg/m3
CAS 15468-32-3
Amorphous:
Precipitated silica and 10 mg/m3
silica gel
CAS 112926-00-8
Aluminum oxide – Al2O3
(18–28%) CAS 1344-28-1
Respirable 5 mg/m3
Total 15 mg/m3
Total 10 mg/m3
Iron oxide – Fe2O3 (9–29%)
CAS 1309-37-1
Total 10 mg/m3
Total 5 mg/m3
Calcium oxide – CaO (1–5%)
CAS 1305-78-8
Total 5 mg/m3
Total 2 mg/m3
Magnesium oxide – MgO (1–2%)
CAS 1309-48-4
Total 15 mg/m3
Total 10 mg/m3
Titanium oxide – TiO2 (1-2%)
CAS 13463-67-7

• Bottom Ash Typical Physical Properties Available:

Powder or in a soluition

• Bottom Ash Nominal Physical Constants:

• Bottom Ash Typical Applications:

1) Bottom ash may be used as an aggregate in road construction and concrete, where it is known as furnace bottom ash (FBA), to distinguish it from incinerator bottom ash (IBA), the non-combustible elements remaining after incineration. It was also used in the making of the concrete blocks used to construct many high-rise flats in London in the 1960s. Used as an abrasive grit.

2) The invention "Arsenic Removal Using Bottom Ash" or ARUBA is based on coating the surfaces of particles of bottom ash (a finely powdered and sterile waste material from coal-fired power plants) with ferric (hydr)oxide . The manufacturing process is conducted at room-temperature and atmospheric pressure. Thus, the material can be produced with relatively simple equipment at low cost.

3) Removing arsenic from contaminated drinking water is simple. ARUBA is mixed into the water, where it reacts with and immobilizes arsenic by adsorption and/or co-precipitation. The resulting complex can be filtered or settled out of the water, and is safe enough for disposal in municipal landfills, per EPA standards.

4) Bottom ash is much less expensive than solid ferric oxide particles, which are often used as a filter media to bond arsenic species. Moreover, it has a high surface to volume ratio meaning that less material is required for water treatment, and hence less waste is produced.

5) ARUBA is a patented methodfor low-cost arsenic removal from drinking water using chemically prepared bottom ash pre-treated with ferrous sulfate and then sodium hydroxide. Deposits on the surface of particles of bottom ash form an activated iron adsorbent with a high affinity for arsenic. In laboratory tests, a miniscule 5 grams of pre-treated bottom ash was sufficient to remove the arsenic from 2 liters of 2400 ppb (parts per billion) arsenic-laden water to a level below 50 ppb (the present United States Environmental Protection Agency limit). By increasing the amount of pre-treated bottom ash, even lower levels of post-treatment arsenic are expected. It is further expected that this invention supplies a very low-cost solution to arsenic poisoning for large population segments.

• Bottom Ash Typical Packaging:

 Loose bulk, super sacks, multiply bags

• Bottom Ash Spill Cleanup:

Wet material and shovel into container with cover or HEPA vacuum. Avoid generating airborne dust.

• Bottom Ash TSCA (SARA Title III) Status:

1) Listed. Please visit the MSDS link below.

2) Caution. This product contains crystalline silica, which uis classified as a known human carcinogen.

• Bottom Ash Transport Information:

 Regulated by the DOT 

• Bottom Ash Product Material Safety Data Sheet:

Tennessee Vallery Authority MSDS