A feasibility study of the biologically inspired green manufacturing of precipitated silica
A feasibility study of the biologically inspired green manufacturing of precipitated silica
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DOI：
10.1016/j.cej.2014.01.071
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发表时间：
2014-05-15
影响因子：
15.1
通讯作者：
Patwardhan, Siddharth V.
中科院分区：
文献类型：
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作者：
Drummond, Craig;McCann, Rachelle;Patwardhan, Siddharth V.
本文提出了一种可能的工业规模设计，用于生物启发（生物启发）沉淀二氧化硅的“绿色”生产，使用批处理或连续处理。该设计允许在经济和环境因素的基础上，对拟议的绿色工艺和现有的生产沉淀二氧化硅的工艺进行比较。提出的绿色工艺使用一种添加剂，可以在室温和中性ph下在实验室实验中在不到五分钟的时间内快速形成二氧化硅。因此，绿色工艺在生产能力和不需要热量方面具有显着优势，因此降低了运行成本和二氧化碳排放。从本文报告的初步可行性研究来看，似乎绿色路线可以证明与当前的处理技术相比经济上是可行的，特别是注意到该过程可以很容易地适应现有二氧化硅生产的单元操作，而不需要额外的资本投资。进行了敏感性分析，确定了影响过程经济的最关键因素是原材料成本和转换。此外，我们已经检查并比较了商业上可获得的沉淀二氧化硅样品与绿色工艺获得的样品的性质。绿色方法似乎提供了一个额外的优势：它可以创造出具有更多样化特性的产品，这些特性易于控制，从而使它们能够进入新的和独特的市场。(C) 2014 Elsevier B.V.版权所有
This paper presents a possible industrial scale design for biologically inspired (bioinspired) 'green' production of precipitated silica using either batch or continuous processing. This design allowed a comparison based on the economic and environmental factors between the proposed green process and an existing process for the production of precipitated silica. The proposed green process uses an additive which allows rapid silica formation to occur in laboratory experiments in less than five minutes at room temperature and neutral pH. The green process hence offers significant advantages in terms of production capacity and no heat requirements, therefore reducing both running costs and carbon dioxide emissions. From the preliminary feasibility study reported herein, it appears that the green route may prove economically comparative to current processing techniques, especially noting that this process can be easily adapted to unit operations in the existing silica production, without the need for additional capital investment. A sensitivity analysis was conducted which identified that the most crucial factors affecting the process economics were the raw material costs and the conversion. Furthermore, we have examined and compared properties of commercially available precipitated silica samples with those obtained by the green process. It appears that the green method provides an additional advantage: it can create products with a much more diverse range of properties, which can be readily controlled, thus allowing them to enter new and unique markets. (C) 2014 Elsevier B.V. All rights reserved.