The invention relates to the field of green chemistry and particularly to a bio pesticide generator plant. It mainly comprises a. a flue gas receptor with an optional flue gas filter; and b. a reactor having a bottom portion holding an aqueous alkali metal carbonate or hydroxide solution, a top portion filled with structured packing, a liquid transporter system for transporting the aqueous alkali metal carbonate or hydroxide solution from said bottom portion to said top portion for saturating the structural packing, and an outlet for collecting the generated alkali metal bicarbonate bio pesticide; characterized in that the flue gas receptor is fitted to the source of flue gas to deliver the carbon dioxide containing flue gas to the bottom portion of said reactor.
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