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Can nitrogen in fertiliser use as catalyst in pyrolysis of plastic? 

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The results were summarized as follows: (i) nitrogen pyrolysis process can effectively decompose plastic.
Pyrolysis of plastic waste could have an important role in converting this waste into economically valuable hydrocarbons, which can be used either as fuels or as feed stock in the petrochemical industry.
The catalyst is easy to handle, selective, and reusable and ammonia dissolved in water could be employed as the nitrogen source.
Therefore, the catalytic pyrolysis process of this residue, especially with a Ni/AC catalyst, has the potential to be a viable option for producing upgraded pyrolysis oil, which may be applied as a quality alternative biofuel.
Pyrolysis of N-rich nonlignocellulosic biomass is a promising way to their energy utilization, in which the evolution of fuel-N may result in serious emission of N-containing pollution due to abundant nitrogen content in them.
Nitrogen functionalities play an important role on the conversion of fuel-N during pyrolysis of raw and torrefied biomass while the influences haven’t been clarified yet.
The results suggested the applicability of the proposed pyrolysis method for enhancing the catalytic conversion of plastic waste into useful hydrocarbons.
In other words, products of catalytic pyrolysis of plastic waste can be potential alternatives to the petroleum-derived fuels.
This approach does not require any nitrogen-containing carbon precursors or post-treatment, but takes advantage of the preferential reaction and/or replacement of oxygen with nitrogen species, generated by decomposition of ammonia at elevated temperatures, in oxygen-rich polymers during pyrolysis.
Pyrolysis at >1000 °C is desirable since most nitrogen in the biomass will be converted to N2 with <7% released as HCN and NH3.

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What is the best type of plastic for co-pyrolysis?5 answersThe best type of plastic for co-pyrolysis depends on the desired outcome. Polypropylene (PP) provides small hydrogen radicals, leading to an increase in aromatic production. Polystyrene (PS) acts as an insulator, inhibiting oil formation while increasing char yield. Polyethylene terephthalate (PET) enhances char formation and dehydration, resulting in increased levels of char and water. Polycarbonate (PC) enhances oil and gas yields through promoting decomposition. Modified dolomite catalysts, such as Ni-doped dolomite, can increase the yield and quality of bio-oil. Biomass-plastic mixtures have a good influence on the gaseous fraction, with potential for use as a replacement for coke oven gas. Co-pyrolysis of corn stover with plastic improves the yield and quality of pyrolysis products. Polyolefin plastics, such as syringes and medical bottles, can offset the poor mono-pyrolytic performance of textile dyeing sludge.
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Is nitrous oxide used as a fertiliser in agriculture?2 answersNitrous oxide is not used as a fertilizer in agriculture. Instead, it is a potent greenhouse gas emitted from agricultural soil management, including the use of nitrogenous fertilizers. The abstracts provided discuss the effects of different nitrogen management practices on nitrous oxide emissions in agricultural systems. They highlight the importance of managing soil health and nutrient use efficiency to reduce nitrous oxide emissions and minimize environmental impacts. The studies focus on the transition from conventional tillage to no tillage, the use of enhanced-efficiency fertilizers, and the interaction between nitrogen management and microbial communities in the soil. The goal is to find strategies that balance high crop yields with reduced nitrous oxide emissions, contributing to both food security and environmental sustainability.

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