Question

proposed methalogy global warming

Answer 1

This warning is based on a Statement of Concern endorsed by the Parties to the London Convention and London Protocol, the international agreements that regulate dumping of wastes and other matter at sea. According to an International Maritime Organization press briefing of 16 November 2007, Parties to the Convention and Protocol, unanimously adopted the June 2007 Statement of Concern issued by their scientific advisors that “knowledge about the effectiveness and potential environmental impacts of ocean iron fertilization is insufficient to justify large-scale operations”. 

The idea behind the method is that micronutrients such as iron or urea will stimulate the growth of phytoplankton in the sea, which can absorb large quantities of carbon dioxide from the atmosphere. Many scientists have critiqued the technology based on studies showing little if any potential for long term sequestration but a high likelihood of damage to the marine environment. They have also noted the possibility that ocean fertilization could promote further climate change by stimulating the production of far more potent greenhouse gases, methane and nitrous oxide. Nevertheless, some companies are already promoting this method and are selling carbon offsets to the public to support their research. 

The IPCC Working Group III report on Mitigation of Climate Change describes ocean fertilization as “speculative and unproven, with the risk of unknown side effects”. In that respect, Parties to the London Convention and Protocol called for “further study (of) the issue from the scientific and legal perspectives with a view to its regulation” and “urges states to use the utmost caution when considering proposals for large-scale ocean fertilization operations”. 

Answer 2

There has been continuous increase in the level of CO2 in atmosphere. Therefore, it is essential to develop an economical and convenient process to reduce the concentration of CO2 in the atmosphere. In this study, we have proposed an economical and efficient adsorption method to minimize the environmental CO2. A fluidized bed adsorption column was used, fabricated using cast iron sheet. The low prize pyrolyzed biochar prepared from farming biomass (crushed fine powder) was used as an adsorbent to adsorb CO2 from the mixture of air and CO2 (99.5% air and 0.5% CO2). The experimental observation was taken for the % removal of CO2 from the mixture of air and CO2, development of adsorption isotherm and to study the effect of pressure and inlet gas flow rate on the amount of CO2 adsorbed per kg of biochar. The exhausted (CO2 adsorbed) biochar from the fluidized column was tested as a fertilizer for the wheat crop and it has given near about 10% increase in the height of wheat crop within the first 10 days after sowing the wheat seeds. On the basis of this experimentation, we have proposed a hypothetical method, using above mentioned fluidized bed column and biochar as adsorbent to reduce the CO2 concentration in the highly polluted regions.