The influence of cell counts, cell size, EPS and microbial inclusions on the lubrication properties of microorganisms
The influence of cell counts, cell size, EPS and microbial inclusions on the lubrication properties of microorganisms
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细胞数量、细胞大小、EPS和微生物夹杂物对微生物润滑性能的影响
DOI：
10.1007/s11740-014-0592-5
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Wilhelm
中科院分区：
文献类型：
--
作者：
Redetzky;Rabenstein;Seidel;Brinksmeier;Wilhelm
金属加工液（MWF）在许多加工应用中起着至关重要的作用，可以根据DIN 51385分为非水混溶和水混溶金属加工液。全世界每年消耗的数十亿升MWF中的大多数是水基的，因此受到微生物污染，导致MWF化合物变质，从而失去质量和技术性能。为了保持MWF的质量，使用杀菌剂来减少微生物负荷，而不顾其对健康和环境的潜在风险。另一个限制是生产MWF的原材料（主要是矿物油）消耗高，德国每年消耗约50,000吨原材料。为了克服这些限制，本文研究了在制造过程中使用微生物作为润滑剂的范式转变。对布鲁格摩擦试验机的初步研究表明，微生物作为传统金属加工液成分的替代品具有巨大的潜力。在此背景下，本文提出的方法旨在研究细胞计数、细胞大小、细胞外聚合物物质和微生物储存产物对选定微生物润滑性能的影响。摩擦学测试结果表明，与高浓度的传统金属加工液相比，某些微生物表现出优越的润滑性能（高达68%）。因此，可以推导出微生物替代传统MWF组分的潜力。
Metalworking fluids (MWF) play an essential role in many machining applications and can be classified e.g. according to DIN 51385 in non-water miscible- and water miscible metalworking fluids. Most of the several billion liters of the worldwide and annually consumed MWF are water-based and thus exposed to a microbial contamination, which leads to a deterioration of MWF compounds and therefore to a loss of quality and technical performance. To maintain the MWF quality, biocides are used to reduce the microbial load, regardless of their potential risk for health and environment. A further limitation poses the high consumption of raw materials (mainly mineral oils) for the production of MWF, with approximately 50,000 t of raw materials consumed annually in Germany. To overcome these limitations, the paradigm shift of using microorganisms as a lubricant in a manufacturing process is investigated in this paper. Preliminary investigations on a Brugger-tribotester indicated the great potential of microorganisms as replacement for conventional metalworking fluid components. Against this background, the approach presented here intends to investigate the influence of cell counts, cell size, extracellular polymeric substances and microbial storage products on the lubrication properties of selected microorganisms. The results of the tribological tests show, that some microorganism exhibit superior lubrication properties (up to 68 % higher) compared to a highly concentrated conventional metalworking fluid. Therefore, the potential of microorganisms to substitute conventional MWF components can be derived.
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食油假单胞菌和甲酸假单胞菌对可溶性油乳液和乳化剂的氧化。
DOI：
--
发表时间：
1956
期刊：
Applied microbiology
影响因子：
--
作者：
L. Sabina;Hilliard Pivnick
通讯作者：
Hilliard Pivnick
切削液中细菌的性质、生长和控制的研究
影响因子：
3.2
作者：
Melba Lee;A. C. Chandler
通讯作者：
A. C. Chandler
金属切削液中需氧细菌的生长。
DOI：
--
发表时间：
1958
期刊：
Applied microbiology
影响因子：
--
作者：
C. Tant;E. Bennett
通讯作者：
E. Bennett
DOI：
--
发表时间：
2006
期刊：
影响因子：
--
作者：
S. Schulte;H. Flemming
通讯作者：
H. Flemming
DOI：
10.1128/aem.4.6.332-338.1956
发表时间：
1956
期刊：
Applied microbiology
影响因子：
--
作者：
E. Bennett;C. Tant
通讯作者：
C. Tant