Latest Research on Bentonite Research: Sep – 2019

Mechanical behaviour of heavily compacted bentonite under high suction changes

The paper reports the results of AN experimental study administrated on a clay compacted to a dry density of up to 1•7 Mg=m3, a high price for this kind of soil. The soil cloth has been studied employing a form of techniques, revealing a transparent bimodal pore distribution that corresponds to 2 distinct structural levels: a microstructural one and a macrostructural one. the most testing programme has been performed victimisation oedometers particularly designed to use a really massive vary of suctions. [1]

Adsorption of phenol by bentonite

The potential of clay for phenol sorption from liquid solutions was studied. Batch mechanics and isopleth studies were meted out to judge the result of contact time, initial concentration, pH, presence of solvent, and therefore the action characteristics of clay. The sorption of phenol will increase with increasing initial phenol concentration and reduces with increasing the answer pH price. The sorption method was considerably influenced by the solvent kind during which phenol was dissolved. The affinity of phenol to clay within the presence of cyclohexane was larger than that in water and was lowest in the presence of alcohol. alcohol was accustomed extract phenol from clay. [2]

The colloidal and rheological properties of bentonite suspensions

The objective of this paper is to convey an summary of the mixture properties of clays and to explain the work performed till the current moment within the space of surface assimilation of non-ionic polymers onto clay and therefore the physical science of clay suspensions. The review is especially targeted on Na+-montmorillonite clay of the smectite cluster (Bentonite), because of its high swelling capability, the power to sorb vital amounts of chemical compound on its surfaces, and therefore the formation of a gel-like structure with yield characteristics and elastic properties at comparatively low clay concentrations. [3]

Long term corrosion estimation of carbon steel, titanium and its alloy in backfill material of compacted bentonite for nuclear waste repository

The instrumentation of high-level radioactive material (HLRW) being in deep geologic disposal, the backfill material is required to function the second defense for HLRW and also the extremely compacted clay is usually elite. because the time goes, the underground water can infiltrate the backfill, inflicting the corrosion of materials for the building of containers within the shaped solution. steel, Ti and its alloy area unit the potential candidate materials for the fabrication of HLRW containers. [4]

Bentonite Nanoclay Assisted Hydrophilic Nylon Fabrics

Aim: Biomimetic surface modifications have gained vital attention in material innovations. during this study, elephant mud bathing was mimicked to form a superior hydrophilic  nylon material.

Place and period of Study: Ceylon Institute of applied science and therefore the University of Moratuwa, Sri Lanka, June 2017- March 2018.

Methodology: clay nanoclay (BNC) grafted on nylon victimisation silane as a coupling agent. Fourier remodel infrared spectrophotometry, microscopy, energy dispersive X-ray spectrum analysis and thermohydrometric analysis confirmed the flourishing attachment of nanoclay on nylon whereas textile protocols verified the wettability. [5]

Reference

[1] Lloret Morancho, A., Villar, M.V., Sanchez, M., Gens Solé, A., Pintado Llurba, X. and Alonso Pérez de Agreda, E., 2003. Mechanical behaviour of heavily compacted bentonite under high suction changes. (Web Link)

[2] Banat, F.A., Al-Bashir, B., Al-Asheh, S. and Hayajneh, O., 2000. Adsorption of phenol by bentonite. Environmental pollution, 107(3), pp.391-398. (Web Link)

[3] Luckham, P.F. and Rossi, S., 1999. The colloidal and rheological properties of bentonite suspensions. Advances in colloid and interface science, 82(1-3), (Web Link)

[4] Long term corrosion estimation of carbon steel, titanium and its alloy in backfill material of compacted bentonite for nuclear waste repository
Qichao Zhang, Min Zheng, Yanliang Huang, Hans Joerg Kunte, Xiutong Wang, Yuemiao Liu & Chuanbo Zheng
Scientific Reportsvolume 9, Article number: 3195 (2019) (Web Link)

[5] Y. Abeywardena, S. B., Perera, S., Nalin de Silva, K. M., Walpalage, S. and W. Somaratne, M. C. (2018) “Bentonite Nanoclay Assisted Hydrophilic Nylon Fabrics”, Chemical Science International Journal, 23(2), (Web Link)

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