College of Forestry, Beijing Forestry University, P.O. Box 111, Beijing, 100083, PR China.
Environ Sci Pollut Res Int. 2019 Sep;26(27):28173-28187. doi: 10.1007/s11356-019-05940-2. Epub 2019 Jul 30.
Composting is an attractive way to recycle organic wastes because the product (compost) can be used as an organic fertilizer or a culture substrate. This study assessed coal fly ash (CFA; at 0, 15, and 35%) and/or vinegar residue (VR; at 0, 35, and 55%) as additives in the green waste (GW) composting process. Compost maturity was assessed based on the following indicators: water-holding capacity, pH, total organic carbon, electrical conductivity, total Kjeldahl nitrogen, and germination index. Other important compost properties that were determined included germination percentage and root length of seeds in a germination assay, crude fiber degradation, specific UV absorption, E/E ratio, microbial numbers (culturable bacteria and volatile fatty acid-degrading bacteria), enzyme activities (dehydrogenase, β-glucosidase, acid-phosphatase, urease, and ortho-diphenol oxidase), and available nutrients. When added together, CFA and VR improved all of these properties. As indicated by the maturity indicators and other properties, the best treatment (the combined addition of 15% CFA and 55% VR) required only 23 days to produce a mature and high quality compost.
堆肥是一种有吸引力的有机废物回收方式，因为产品（堆肥）可用作有机肥料或培养基质。本研究评估了煤灰（CFA；添加量为 0、15 和 35%）和/或醋渣（VR；添加量为 0、35 和 55%）作为绿色废物（GW）堆肥过程中的添加剂。根据以下指标评估堆肥成熟度：持水能力、pH 值、总有机碳、电导率、总凯氏氮和发芽指数。在发芽试验中还确定了其他重要的堆肥性质，包括种子发芽率和根长、粗纤维降解、特定紫外吸收、E/E 比、微生物数量（可培养细菌和可降解挥发性脂肪酸的细菌）、酶活性（脱氢酶、β-葡萄糖苷酶、酸性磷酸酶、脲酶和邻苯二酚氧化酶）以及有效养分。CFA 和 VR 一起添加可改善所有这些性质。根据成熟度指标和其他性质，最佳处理（添加 15% CFA 和 55% VR 的组合）仅需 23 天即可生产成熟且高质量的堆肥。
