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2. Greensand - Wikipedia

   en.wikipedia.org/wiki/Greensand

   Greensand glauconite is used as a water softener for its chemical-exchange properties. Greensand coated with manganese oxide (called manganese greensand) is used in well water treatment systems to remove dissolved (reduced) iron and manganese with the addition of an oxidant, usually potassium permanganate, under controlled pH conditions. [14]

3. Media filter - Wikipedia

   en.wikipedia.org/wiki/Media_filter

   Municipal drinking water systems often use a rapid sand filter and/or a slow sand filter for purification. Silica sand is the most widely used medium in such filters. [1] Anthracite coal, garnet sand, ilmenite, granular activated carbon, manganese green sand and crushed recycled glass are among the alternative filter media used. [2]

4. Manganese - Wikipedia

   en.wikipedia.org/wiki/Manganese

   Manganese is a key component of low-cost stainless steel. [ 73 ] [ 74 ] Often ferromanganese (usually about 80% manganese) is the intermediate in modern processes. Small amounts of manganese improve the workability of steel at high temperatures by forming a high-melting sulfide and preventing the formation of a liquid iron sulfide at the grain ...

5. Glauconite - Wikipedia

   en.wikipedia.org/wiki/Glauconite

   Glauconite. Glauconite is an iron potassium phyllosilicate ( mica group) mineral of characteristic green color which is very friable [ 5] and has very low weathering resistance. It crystallizes with a monoclinic geometry. Its name is derived from the Greek glaucos ( γλαυκός) meaning 'bluish green', referring to the common blue-green ...

6. Backwashing (water treatment) - Wikipedia

   en.wikipedia.org/wiki/Backwashing_(water_treatment)

   Backwashing is a form of preventive maintenance so that the filter media can be reused. In water treatment plants, backwashing can be an automated process that is run by local programmable logic controllers (PLCs). The backwash cycle is triggered after a set time interval, when the filter effluent turbidity is greater than a treatment guideline ...

7. NJ's four electric utilities are raising rates. Here's how ...

   www.aol.com/njs-four-electric-utilities-raising...

   Natural gas bills rising too: New Jersey Natural Gas wants to bump up your bill by 24%; will the state agree? The auction covers one third of the electric supply needed for the state's customers ...

8. Iron-oxidizing bacteria - Wikipedia

   en.wikipedia.org/wiki/Iron-oxidizing_bacteria

   The anoxygenic phototrophic iron oxidation was the first anaerobic metabolism to be described within the iron anaerobic oxidation metabolism. The photoferrotrophic bacteria use Fe 2+ as electron donor and the energy from light to assimilate CO 2 into biomass through the Calvin Benson-Bassam cycle (or rTCA cycle) in a neutrophilic environment (pH 5.5-7.2), producing Fe 3+ oxides as a waste ...

9. Scientists may have a solution to the International Space ...

   www.engadget.com/scientists-may-have-a-solution...

   The findings are critical because fungal growths can clog filters in water processing systems and make astronauts sick. ... it can cost space agencies loads of money to replace affected materials.