ICAR-Directorate of Rapeseed-Mustard Research, Sewar, Bharatpur 321303, Rajasthan, India.
ICAR-Directorate of Rapeseed-Mustard Research, Sewar, Bharatpur 321303, Rajasthan, India.
Waste Manag. 2021 May 1;126:180-190. doi: 10.1016/j.wasman.2021.03.004. Epub 2021 Mar 23.
The aim of this study was to assess the maturity indicators of municipal solid waste compost (MSWC) enrichment with different byproduct of (sugar and fertilizer industry) sulphur (S). The concentration of total S (TS), water-soluble S (WSS), HCl extractable S and available S were significantly different in composts prepared through different byproduct of S with MSW. WSS varied from 4.6 to 5.9% of TS after 120 days of the composting period, whereas, available S varied from 14.5 - 8.6% of TS. S enriched MSW compost had lower C/N, C/S ratio and higher nitrification index as well as lower phyto-toxicity, demonstrating that composts are properly matured and stabilised. Highest compost quality index (0.97) was recorded with S1 compost. Arylsulphatase activity significantly increased with compost maturity. Results stated that all S enriched products maintained a superior amount of plant nutrients and quality indices, indicating that S enriched compost could be a possible substitute for expensive fertilizers.
本研究旨在评估不同副产物（糖和肥料工业）硫（S）对城市固体废物堆肥（MSWC）的成熟度指标的影响。通过不同副产物 S 与 MSW 制备的堆肥中，总 S（TS）、水溶性 S（WSS）、HCl 可提取 S 和有效 S 的浓度存在显著差异。在堆肥期 120 天后，WSS 占 TS 的比例从 4.6%到 5.9%不等，而有效 S 占 TS 的比例从 14.5%到 8.6%不等。S 富集 MSW 堆肥具有较低的 C/N、C/S 比和较高的硝化指数以及较低的植物毒性，表明堆肥已经适当成熟和稳定。S1 堆肥的堆肥质量指数最高（0.97）。芳基硫酸酯酶活性随堆肥成熟度显著增加。结果表明，所有 S 富集产品均保持了较高的植物养分和质量指数，表明 S 富集堆肥可以替代昂贵的肥料。
