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首页> 外文期刊>RSC Advances >Tested functionalization of alginate-immobilized ureolytic bacteria for improvement of soil biocementation and maximizing water retention
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Tested functionalization of alginate-immobilized ureolytic bacteria for improvement of soil biocementation and maximizing water retention

机译：藻酸盐固定化型尿液细菌的试验化官能化，以改善土壤生物沉积，最大化水潴留

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摘要

The future expected water scarcity in the world invites the scientists to figure out sustainable solutions for agriculture needs. One of suggested solutions could be the improvement of soil stability and increasing its water retention ability. The current proposal is concerning by the improvement of soil stability through biocementation process. While, water retention ability was enhanced through the amendment of tested soils with alginate hydrogel. An ureolytic bacterial isolate showed a detectable ability to dissociate urea and act as a nucleation site for calcium carbonate precipitation. The bacterium was identified asBacillussp. after comparing with other strains in GenBank. The mechanical properties of three tested soil types (sand, calcareous, and clay) were improved after the biocementation by calcium carbonate from 119.8, 45.9, and 5 (N) to 187.5, 423.9, and 337.2, respectively. The Energy-dispersive X-ray spectroscopy (EDX) analysis confirmed the appearance of carbon element in samples containing bacterial-immobilized beads and free bacterial cells indicating calcium carbonate formation. The water uptake measurements investigated the ability of alginate beads to retain water with a percentage of 55%. The overall results prove the capability ofBacillussp. strain combined with alginate hydrogel to improve the soil stability and water retention ability.
机译：世界上未来的预期水资源稀缺邀请科学家们弄清楚农业需求的可持续解决方案。建议的解决方案中的一个可能是改善土壤稳定性并提高水保留能力。目前的建议涉及通过生物处理过程改善土壤稳定性。虽然，通过使用藻酸盐水凝胶的测试土壤修正了水保留能力。尿溶性细菌分离物显示出解离尿素的可检测能力，并作为碳酸钙沉淀的核细胞核心。细菌被鉴定为asbacillussp。与Genbank中的其他菌株相比。通过119.8,45.9和5（n）至187.5,423.9和337.2分别通过119.8,45.9和5（n）至187.5,423.9和337.2的碳酸钙之后，改善了三种测试土壤类型（沙子，钙质和粘土）的机械性能。能量分散X射线光谱（EDX）分析证实了含有细菌固定的珠粒的样品中的碳素元素的外观和指示碳酸钙形成的自由细菌细胞。水吸收测量研究了海藻酸盐珠子保留水的能力，百分比为55％。整体结果证明了俾溴乐杆肌肉的能力。应变结合藻酸盐水凝胶，提高土壤稳定性和水保留能力。

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  • 来源
    《RSC Advances》 |2020年第36期|共10页
  • 作者

    Taha Tarek H.; Elnouby Mohamed S.; Abu-Saied M. A.; Alamri Saad;

  • 作者单位

    City Sci Res &

    Technol Applicat SRTA City Environm Biotechnol Dept Genet Engn &

    Biotechnol Res Inst GEBRI Alexandria 21934 Egypt;

    City Sci Res &

    Technol Applicat SRTA City Composite &

    Nanostruct Mat Res Dept Adv Technol &

    New Mat Res Inst Alexandria 21934 Egypt;

    City Sci Res &

    Technol Applicat SRTA City Polymer Mat Res Dept Adv Technol &

    New Mat Res Inst Alexandria 21934 Egypt;

    King Khalid Univ Coll Sci Dept Biol POB 9004 Abha Saudi Arabia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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