Comparing the shear stress obtained from the upward flow curve at a shear rate of 3.4 1/s with the yield stress obtained from the downward flow curve fitted with the Herschel–Bulkley model or Bingham model, as a function of the added amount of HCl solution, showed that the difference between the two values was large in acidic media with high HCl content, but insignificant in neutral or basic media. Therefore, particle aggregation was facilitated due to a decrease in the stability of the suspension. The absolute value of the zeta potential decreased as the added amount of HCl solution increased. The amount of HCl solution added had a significant impact on the zeta potential of the bentonite suspension.
Rheological properties and zeta potentials were measured with various amounts of a 1 M HCl solution added to a 5 wt.% bentonite suspension. The result showed that a significant yield value was required to break the particle network due to the large cohesion force between the particles. The initial shear stress of the 9 wt.% bentonite suspension grew larger with increasing storage time than did the yield stress value obtained from Herschel–Bulkley model fitting. It was found that the viscosity and shear stress increased with increasing bentonite concentration and storage time. Rheological properties were measured at bentonite concentrations of 5, 7, and 9 wt.%. Questions? Contact us today 888.642.6431or visit or influences of bentonite concentration and solution pH on the rheological properties and long-term stabilities of bentonite suspensions were studied in this research. Let us know if you have any questions or concerns. Please take care and stay safe and healthy. If there is a critical issue please contact us via phone or email so we can assist you appropriately. Onsite service and assistance will be limited at this time to ensure the safety of our employees and others. We will continue to maintain the highest level of service and support. Our priority is to ensure your questions are answered and your orders are shipped as quickly as possible without compromising the quality of the instrument. Our team can be reached by phone or email at any time. The REUSE economy will be instrumental in jump starting the economy, because a lot of new equipment will not be available. However, since we are deemed an "Essential Business" we will remain OPEN to ensure we are able to assist everyone's needs during this fast-spreading Pandemic. The California Governor has put a "shelter in place" status for all California residents and businesses. We are wishing you and your family great health during this time. We are all extremely grateful and can not thank you enough for all that you're doing. × ! COVID-19 UPDATE FROM ANDbio and REUZEitĪNDbio, powered by REUZEit, wants to thank all researchers for their dedication and commitment during these difficult and unforeseen times in combating COVID-19.
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