Strezov Vladimir, Evans Tim J
Graduate School of the Environment, Macquarie University, Sydney, NSW 2109, Australia.
Waste Manag. 2009 May;29(5):1644-8. doi: 10.1016/j.wasman.2008.11.024. Epub 2009 Jan 10.
Paper sludge is a waste product from the paper and pulp manufacturing industry that is generally disposed of in landfills. Pyrolysis of paper sludge can potentially provide an option for managing this waste by thermal conversion to higher calorific value fuels, bio-gas, bio-oils and charcoal. This work investigates the properties of paper sludge during pyrolysis and energy required to perform thermal conversion. The products of paper sludge pyrolysis were also investigated to determine their properties and potential energy value. The dominant volatile species of paper sludge pyrolysis at 10 degrees C/min were found to be CO and CO(2), contributing to almost 25% of the paper sludge dry weight loss at 500 degrees C. The hydrocarbons (CH(4), C(2)H(4), C(2)H(6)) and hydrogen contributed to only 1% of the total weight loss. The bio-oils collected at 500 degrees C were primarily comprised of organic acids with the major contribution being linoleic acid, 2,4-decadienal acid and oleic acid. The high acidic content indicates that in order to convert the paper sludge bio-oil to bio-diesel or petrochemicals, further upgrading would be necessary. The charcoal produced at 500 degrees C had a calorific value of 13.3MJ/kg.
造纸污泥是造纸和纸浆制造业产生的一种废弃物，通常被填埋处理。造纸污泥的热解有可能为处理这种废弃物提供一种选择，即通过热转化将其变为高热值燃料、生物气、生物油和木炭。这项研究调查了造纸污泥在热解过程中的特性以及进行热转化所需的能量。还对造纸污泥热解产物进行了研究，以确定其特性和潜在能量值。发现在升温速率为10℃/分钟的情况下，造纸污泥热解的主要挥发性物质是一氧化碳和二氧化碳，在500℃时，它们几乎占造纸污泥干重损失的25%。碳氢化合物（甲烷、乙烯、乙烷）和氢气仅占总重量损失的1%。在500℃收集的生物油主要由有机酸组成，其中主要成分是亚油酸、2,4-癸二烯酸和油酸。高酸性含量表明，为了将造纸污泥生物油转化为生物柴油或石化产品，需要进一步升级处理。在500℃产生的木炭热值为13.3兆焦/千克。
