Which chemical compound absorbs CO2 during photosynthesis?

Answer 1

CRYSTALLINE sponges pocked with pores that are just the right size to trap carbon dioxide molecules could filter the fumes from power stations and cars. What's more, the trapped CO2 can then be sucked from the crystals and piped into containers and buried underground, allowing the crystals to be reused. Carbon capture and storage has been touted as a powerful weapon against global warming. Until now, the only way to strip CO2 from car exhaust, flue gases or power-plant emissions was to bubble them through a solvent that reacts with CO2. The trouble is that subsequently removing the gas from the solvent requires heat, limiting the efficiency of the process. "Anything that has the potential to reduce this 'energy penalty' is extremely valuable," says Stuart Haszeldine, an expert on carbon capture at the University of Edinburgh, UK. So Omar Yaghi and colleagues at the University of California, Los Angeles, created powders made of porous crystals that soak up CO2. When the crystals are fully loaded, the gas can be released by a drop in pressure, which sucks the CO2 right out. Their crystals, called "zeolitic imidazolate frameworks" (ZIFs), have pores that are big enough to allow CO2 molecules inside, but small enough to retain them. The crystals are created by blending cobalt or zinc with organic molecules called imidazolates - the pore size depends on the imidazolate used. The researchers created 25 different ZIFs but only three had pores of about the right size to trap CO2. The team bubbled a mixture of CO2 and carbon monoxide (CO) gas over each of them. All three trapped CO2, with the most efficient soaking up 83 times its own volume, but little CO (Science, DOI: 10.1126/science.1152516). To bury CO2 the gas must not be contaminated by other molecules - which might be toxic and leach out - so this selectivity is key. "We're optimistic that within a year or two these materials will be ready for testing in power stations," says Rahul Banerjee, a member of the UCLA team. ZIFs should be tough enough to survive harsh conditions inside power stations, he says. In tests, they withstood temperatures of 400 °C.

Answer 2

Trees and any growing vegetation absorb carbon dioxide through the process of photosynthesis. Oxygen is released and the carbon is stored in the tree or plant.

CO2 Scrubber System The Carbon Dioxide or CO2 Scrubber System is a self-contained unit that removes carbon dioxide from the air & provides oxygen at controlled rates in enclosed areas. The system utilizes compressed oxygen from cylinders & soda lime chemicals to produce full air changes.

Answer 3

For example sodium hydroxide (NaOH) or potassium hydroxide (KOH); NaOH is used as absorbent in the determination of carbon dioxide or the elemental carbon.

Answer 4

Rubilose bisphospate (RuBP) is reacted with Co2 in a series of steps to form glycerate-3-phosphate which then can be used to make sugar.

Answer 5

Any basic oxide and all hydroxides will react to the acidic oxide of carbon, CO2

Examples: CaO, MgO, NaOH, KOH, and even carbonates like soda.

Answer 6

Normal oxygen in its molecular form of 02, people dont realise how often Carbon defuses wiht Oxygen causing what called a 'Homletric Reaction'

Answer 7

Limestone & KOH

Answer 8

Cuprous chloride (CuCl)