压泥的水热预处理:水电和工艺水的特性和潜在应用
Subhojit Bhowmick1, Yogendra Shastri2, Anurag Garg1
1Environmental Science and Engineering Department, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra 400076, India.
Waste management (New York, N.Y.)
|May 16, 2024
概括
糖业压泥 (PM) 的水热预处理 (HTP) 将废物转化为有价值的资源. 这一过程产生了具有更高加热价值的 (HC) 和适合生物气生产的工艺水 (PW),提供可持续的废物管理解决方案.
科学领域:
- 废弃物管理和回收利用
- 生物质预处理技术
- 可再生能源生产可再生能源的生产.
背景情况:
- 压泥 (PM) 是糖工业的重要废物副产品,带来了环境挑战.
- 从工业废物中回收资源对于可持续发展和循环经济原则至关重要.
研究的目的:
- 调查水热预处理 (HTP) 对从压泥 (PM) 中回收资源的潜力.
- 评估由PM的HTP产生的 (HC) 和工艺水 (PW) 的特性.
主要方法:
- 压泥样品在实验室规模的批量反应堆中在160°C和200°C的温度下进行了水热预处理 (HTP),固体含量不同 (5%和30%).
- 固体 (HC) 的表征包括高加热值 (HHV) 和热重力测量分析 (TGA).
- 在HC和PM上进行了植物毒性测试,使用豆发芽,并评估工艺水 (PW) 的生物化学甲潜力 (BMP).
主要成果:
- 水热预处理有效地将PM分离为固体 (HC) 和工艺水 (PW).
- 与PM (14 MJ kg-1) 相比,HC的高加热值 (HHV) 略高于PM (14 MJ kg-1),在燃烧过程中释放的热量是1.5-1.7倍.
- HC和PM都没有表现出植物毒性,PW每克化学氧气需求产生167-245毫升生物气,这表明生物气的潜力很大.
结论:
- 压泥的水热预处理是一种可行的资源回收方法,产生富含能量的和生产生物气的工艺水.
- 这种方法提供了一种可持续的解决方案,用于管理糖业废物,减少对环境的影响,并创造有价值的副产品.
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