There are at least four things that become motivation for biochar production, namely as in the chart above. There are a number of slices that make the impact of biochar application multi-benefits, which is very much in line with today's world problems, namely climate change and global warming. Biochar has also been accepted as an instrument to reduce the concentration of CO2 in the atmosphere which causes the two big problems above, namely in 2018 biochar was included in the Intergovermental Panel on Climate Change (IPCC) as one of the negative emissions technologies (NETs). Biochar application is a carbon negative scenario because biochar can absorb CO2 from the atmosphere. This is slightly different from the use of biomass fuels such as wood pellets, wood briquette and palm kernel shell (PKS) in industrial boilers or power plants, which are carbon neutral scenarios. Indeed, basically there are 3 big scenarios to reduce the concentration of CO2 in the atmosphere, namely increasing the efficiency of equipment that uses fossil fuels, using carbon neutral fuels and carbon negative scenarios such as biochar.
Palm oil trees are known to require a lot of water and fertilizer to maintain the life sustainability and productivity of their fruit, so practical efforts in the form of increasing fertilizer nutrient efficiency and increasing fruit productivity are important. Besides that, palm oil mills produce a lot of biomass waste, especially empty fruit bunches (EFB ) and mesocarp fiber, which are very potential for biochar raw materials. The biochar is then applied in palm oil plantations which can be used with chemical fertilizers or with compost / organic fertilizers.
Pyrolysis and gasification technologies are commonly used for the production of the biochar. Apart from producing biochar by pyrolysis or gasification, energy is also produced which can be used for the business development of the palm oil industry or for electricity production. Production of PKO (Palm kernel oil) from kernel processing at KCP (kernel crushing plant) or production of torrefied PKS from PKS processing with torrefaction can be done by utilizing excess energy from the production of biochar. Most of the palm oil mills or CPO mills do not have kernel processing or KCP to produce PKO. And by making torrefied PKS, the caloric value of PKS will increase, it is easy to downsizing (increased grindability), for example in the use of cofiring and does not absorb water (hydrophobic property). In general, palm oil mills will have many advantages, both economically / financially and environmentally, with this biochar production.
Apart from being used for business development like the diagram above, excess energy from pyrolysis or gasification can also be used as boiler fuel in the palm oil mill. In this way the energy to heat the boiler, which is usually with palm kernel shell and mesocarp fiber, can be replaced by energy from pyrolysis or gasification. After that, all of the palm kernel shells / PKS can be sold or exported, thus providing additional profits for the palm oil company. The need for biomass fuel, especially palm kernel shell / PKS, is predicted to increase, both in the domestic market and in the export market. Japan is currently the largest consumer or user of palm kernel shells and it is predicted that the demand will also increase. Japan will also impose stricter standards on imports of palm kernel shells to ensure environmental sustainability by applying the GGL (Green Gold Label) certification which will be effective starting April 2023. This is like the wood pellets with FSC certification. If anyone is interested in an economic analysis of the use of biochar in palm oil business, please contact us.
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