Department of Civil and Environmental Engineering, University of South Carolina, 300 Main Street, Columbia, SC 29208, United States.
Department of Civil and Environmental Engineering, University of South Carolina, 300 Main Street, Columbia, SC 29208, United States.
Bioresour Technol. 2014 Feb;154:229-39. doi: 10.1016/j.biortech.2013.11.069. Epub 2013 Dec 10.
Hydrothermal carbonization (HTC) is a thermal conversion process that has been shown to be environmentally and energetically advantageous for the conversion of wet feedstocks. Supplemental moisture, usually in the form of pure water, is added during carbonization to achieve feedstock submersion. To improve process sustainability, it is important to consider alternative supplemental moisture sources. Liquid waste streams may be ideal alternative liquid source candidates. Experiments were conducted to systematically evaluate how changes in pH, ionic strength, and organic carbon content of the initial process water influences cellulose carbonization. Results from the experiments conducted evaluating the influence of process water quality on carbonization indicate that changes in initial water quality do influence time-dependent carbonization product composition and yields. These results also suggest that using municipal and industrial wastewaters, with the exception of streams with high CaCl2 concentrations, may impart little influence on final carbonization products/yields.
水热碳化（HTC）是一种热转化过程，已被证明在将湿原料转化为环境和能源方面具有优势。碳化过程中会添加额外的水分，通常以纯水的形式添加，以实现原料浸没。为了提高工艺的可持续性，考虑替代补充水分源非常重要。液体废物流可能是理想的替代液体源候选物。进行了实验以系统地评估初始工艺水中的 pH 值、离子强度和有机碳含量的变化如何影响纤维素碳化。评估工艺水质量对碳化影响的实验结果表明，初始水质的变化确实会影响随时间变化的碳化产物组成和产率。这些结果还表明，使用城市和工业废水，除了 CaCl2 浓度高的废水外，对最终碳化产物/产率的影响很小。
