期刊
JOURNAL OF ENVIRONMENTAL ENGINEERING
卷 136, 期 6, 页码 616-626出版社
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)EE.1943-7870.0000198
关键词
Crab shell; Chitin; Spent mushroom compost; Acidic water; Mine wastes; Biodegradation; Manganese; Sulfates; Calcium carbonate.
资金
- National Science Foundation [CBET-0644983]
- Department of Civil and Environmental Engineering at The Pennsylvania State University
- College of Engineering at The Pennsylvania State University
Crab-shell chitin, which is inherently high in calcium carbonate and nutrients, was tested as a multifunctional, fractional amendment to improve the effectiveness of spent mushroom compost (SMC), which is a low-cost, frequently used, but often underperforming substrate for treating acid mine drainage (AMD). Batch and continuous-flow column tests were used to evaluate different crab-shell/SMC mixtures for their ability to neutralize acidity, reduce sulfate, and remove metals in field-collected AMD. Alkalinity generation and the removal of manganese and sulfate were strongly correlated to the fraction of crab shell in the substrate: the treatment capacity increased from 36.7 L/kg for the traditional 90% SMC/10% limestone substrate up to 428 L/kg for 100% crab shell. The costs associated with adding crab shell to SMC were found to be minimal relative to the resulting improvement in water quality. Based on these data, it appears that a small fraction of crab shell (5-15%) does not provide a significant benefit over traditional compost and limestone substrates, but that larger fractions (50-100%) are much more efficient than traditional SMC substrates, especially for the removal of metals.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据