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Spout Fluidized Bed Assisted Preparation of Poly(tannic acid)-Coated Urea Fertilizer.
ACS Omega ( IF 3.7 ) Pub Date : 2020-01-09 , DOI: 10.1021/acsomega.9b03310 Yu Wang 1 , Heling Guo 1 , Xiaolin Wang 1 , Zhiyuan Ma 2 , Xie Li 1 , Rui Li 1 , Qian Li 1 , Rongjie Wang 1 , Xin Jia 1
ACS Omega ( IF 3.7 ) Pub Date : 2020-01-09 , DOI: 10.1021/acsomega.9b03310 Yu Wang 1 , Heling Guo 1 , Xiaolin Wang 1 , Zhiyuan Ma 2 , Xie Li 1 , Rui Li 1 , Qian Li 1 , Rongjie Wang 1 , Xin Jia 1
Affiliation
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Slow-release fertilizers (SRFs) have been widely used to reduce environment pollution derived from excessive nutrients. Coated fertilizers have been designed and prepared using various materials. However, development of new green coating materials and simple process is still a huge challenge. In this study, tannic acid (TA), a natural polyphenol, was used to prepare poly(tannic acid) (PTA)-coated fertilizers with urea prills as the core, and the technology of the coating process in a spout fluidized bed was developed. PTA coating could be formed rapidly by the fast oxidation of TA by an oxidation solution containing CuSO4 and H2O2. The coated urea release behavior was systematically studied in water and soil. In both water and soil, the release rate of nitrogen from coated urea is much slower than that from raw urea. Raw urea was completely dissolved within 30 min, while 27% of urea was released from coated urea. The pot experiments indicated that coated urea has a positive effect on the plant growth as well. Our results provide an effective method to prepare environment-friendly SRFs, indicating a promising application in sustainable agriculture.
中文翻译：
喷口流化床辅助制备聚鞣酸涂层尿素肥料。
缓释肥料（SRF）已被广泛用于减少因养分过多而造成的环境污染。使用各种材料设计和制备了包衣肥料。然而，新型绿色涂料的开发和简单工艺仍然是巨大的挑战。在这项研究中，使用天然多酚鞣酸（TA）制备以尿素小球为核心的聚鞣酸（PTA）包衣肥料，并开发了在流化床流化床中进行包衣的技术。PTA涂层可以通过含CuSO4和H2O2的氧化溶液对TA的快速氧化而迅速形成。在水和土壤中系统地研究了包膜尿素的释放行为。在水和土壤中，包膜尿素中的氮释放速率比未处理尿素中的氮释放速率要慢得多。原始尿素在30分钟内完全溶解，而包膜尿素释放出27％的尿素。盆栽试验表明，包膜尿素对植物生长也有积极作用。我们的结果为制备环境友好的SRFs提供了有效的方法，表明在可持续农业中的应用前景广阔。
更新日期：2020-01-22
中文翻译：
喷口流化床辅助制备聚鞣酸涂层尿素肥料。
缓释肥料（SRF）已被广泛用于减少因养分过多而造成的环境污染。使用各种材料设计和制备了包衣肥料。然而，新型绿色涂料的开发和简单工艺仍然是巨大的挑战。在这项研究中，使用天然多酚鞣酸（TA）制备以尿素小球为核心的聚鞣酸（PTA）包衣肥料，并开发了在流化床流化床中进行包衣的技术。PTA涂层可以通过含CuSO4和H2O2的氧化溶液对TA的快速氧化而迅速形成。在水和土壤中系统地研究了包膜尿素的释放行为。在水和土壤中，包膜尿素中的氮释放速率比未处理尿素中的氮释放速率要慢得多。原始尿素在30分钟内完全溶解，而包膜尿素释放出27％的尿素。盆栽试验表明，包膜尿素对植物生长也有积极作用。我们的结果为制备环境友好的SRFs提供了有效的方法，表明在可持续农业中的应用前景广阔。
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