News Update on Bentonite Research: Sep – 2019

Removal of Pb (II) from aqueous/acidic solutions by using bentonite as an adsorbent

The ability of clay clay to get rid of Pb(II) from liquid solutions and from aqua fortis, acid and acid solutions (1.0–1×10−5) has been studied at completely different optimized conditions of concentrations, quantity of adsorbent, temperature, concentration of solution and pH. most sorption of Pb(II), i.e. >98% has been achieved in liquid solutions, whereas eighty six is achieved from one.0×10−5 M HCl exploitation zero.5 g of clay. The sorption decreases by increasing the concentration of electrolytes. Flame atomic absorption mass spectrometer was used for activity lead concentration. [1]

Mechanical behaviour of heavily compacted bentonite under high suction changes

The paper reports the results of Associate in Nursing experimental study dole out on a clay compacted to a dry density of up to 1•7 Mg=m3, a high worth for this kind of soil. The soil material 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. [2]

Removal of a cationic dye from aqueous solutions by adsorption onto bentonite clay

The ability of clay to get rid of mineral inexperienced from binary compound solutions has been studied for various adsorbate concentrations by variable the number of adsorbent, temperature, hydrogen ion concentration and shaking time. most sorption of the dye, i.e. >90% has been achieved in binary compound solutions exploitation zero.05 g of clay at a hydrogen ion concentration of nine. thermodynamical parameters like ΔH°, ΔS° and ΔG° were calculated from the slope and intercept of the linear plots of ln KD against 1/T. Analysis of sorption results obtained at 298, 308, 318 and 328 K showed that the sorption pattern on clay appears to follow the Irving Langmuir, Freundlih and D–R isotherms. [3]

A Biochar-Based Route for Environmentally Friendly Controlled Release of Nitrogen: Urea-Loaded Biochar and Bentonite Composite

Biochar-based fertilizers have attracted multiplied attention, as a result of biochar will improve the soil fertility, promote plant growth and crop yield. However, biochar-based controlled unleash N fertilizers (BCRNFs) still face issues attributable to the high price, inefficient production technology, instability of nitrides, and therefore the challenge related to the controlled unleash of nutrients. during this study, we have a tendency to hydrothermally synthesised novel BCRNFs exploitation urea-loaded biochar, clay and polyvinyl alcohol for controlled unleash of nutrients. [4]

Bentonite Nanoclay Assisted Hydrophilic Nylon Fabrics

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

Place and period of Study: state Institute of applied science and therefore the University of Moratuwa, Sri Lanka, Gregorian calendar month 2017- March 2018. [5]

Reference

[1] Naseem, R. and Tahir, S.S., 2001. Removal of Pb (II) from aqueous/acidic solutions by using bentonite as an adsorbent. Water Research, 35(16), pp.3982-3986. (Web Link)

[2] 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)

[3] Tahir, S.S. and Rauf, N., 2006. Removal of a cationic dye from aqueous solutions by adsorption onto bentonite clay. Chemosphere, 63(11), pp.1842-1848. (Web Link)

[4] A Biochar-Based Route for Environmentally Friendly Controlled Release of Nitrogen: Urea-Loaded Biochar and Bentonite Composite
Xiangrong Liu, Jiayuan Liao, Haixing Song, Yong Yang, Chunyun Guan & Zhenhua Zhang
Scientific Reportsvolume 9, Article number: 9548 (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), pp. 1-6. doi: 10.9734/CSJI/2018/41670. (Web Link)

Leave a Reply

Your email address will not be published. Required fields are marked *