Diversion of Crab Waste into BioChar Production

路易斯堡海鲜有限公司每年收获（4月至10月）并销售500万磅雪蟹（Chionoecetesopilio）。商业上需要的产品是从雪蟹的身体（大约三分之一的螃蟹）产生的腿和肩膀产生的废物流。目前Louisbourg Seafoods为雪蟹的垃圾填埋埋了费用，他们对其他更环保的可持续做法感兴趣。在垃圾填埋场中，雪蟹的残留物会分解并产生少量的固定碳，然而大部分碳在分解过程中以二氧化碳的形式释放到环境中，除了对微生物有益之外，其余的化学物质在垃圾填埋场分解过程中都没有被利用。雪蟹的化学成分包括高含量的蛋白质（34.2% dw）和必需氨基酸；它们还含有脂肪（17.1% dw），高比例的多不饱和脂肪酸和大约28.5% dw的矿物质（钙、磷和镁），这使得这种废物流非常吸引人，作为产生生物炭的起始生物质，生物炭具有比林业生物炭更有趣、更有可能更有价值的化学成分。

Louisbourg Seafoods Limited harvests (April to October) and sells 5 millions lbs of Snow Crab (Chionoecetesopilio) annually. The commercially desired product are the legs and shoulders generating resultant wastestreams from the bodies of the snow crabs (approximately 1/3 of the crab). Currently Louisbourg Seafoods paysfor snow crab waste to be landfilled and they are interested in alternative, more environmentally sustainablepractices. In a landfill, snow crab residues will decompose and generate some small amount of fixed carbon,however much of the carbon is released into the environment as CO2 during decomposition and aside fromsome microbial benefits none of the remaining interesting chemicals are utilized during landfill decomposition.The chemical composition of the snow crab includes a high content of protein (34.2% dw) and essential aminoacids; they also have fat (17.1% dw), with a high proportion of polyunsaturated fatty acids and approximately28.5% dw minerals (calcium, phosphorous, and magnesium) making this waste stream very intriguing as astarting biomass for the generation of biochar that has a more interesting and likely more valuable chemicalcomposition than forestry biochars.