Effects of aluminum on the expansion and microstructure of alkali-activated MSWI fly ash-based pastes.

Effects of aluminum on the expansion and microstructure of alkali-activated MSWI fly ash-based pastes. Chemosphere. 2020 Feb;240:124986 Authors: Tian X, Rao F, León-Patiño CA, Song S Abstract Alkaline activation is of great potential in the solidification of municipal solid waste incineration (MSWI) fly ash, but the metallic aluminum in the ash inhibits its application. This work studies the effects of residual metallic aluminum on the expansion and microstructure of alkali-activated MSWI fly ash-based pastes. Based on the results obtained, an optimized preparation process is suggested. Characterizations of the pastes include expansion ratio, morphology (SEM), mechanical strength and microstructure (XRD and FTIR). It is confirmed that MSWI fly ash could be solidified through alkaline activation when using a small amount of coal fly ash to adjust the reactive silica and aluminum ratios. In the optimized preparation, sodium hydroxide was added separately, so that expansion in the pastes was significantly mitigated, the formation of geopolymer gel was improved and the compressive strength of the pastes increased. PMID: 31726592 [PubMed - in process]
Source: Chemosphere - Category: Chemistry Authors: Tags: Chemosphere Source Type: research

Related Links:

Journal of Laparoendoscopic&Advanced Surgical Techniques, Ahead of Print.
Source: Journal of Laparoendoscopic and Advanced Surgical Techniques - Category: Surgery Authors: Source Type: research
Publication date: January 2020Source: The American Journal of Surgery, Volume 219, Issue 1Author(s):
Source: The American Journal of Surgery - Category: Surgery Source Type: research
Publication date: January 2020Source: The American Journal of Surgery, Volume 219, Issue 1Author(s):
Source: The American Journal of Surgery - Category: Surgery Source Type: research
Publication date: January 2020Source: The American Journal of Surgery, Volume 219, Issue 1Author(s):
Source: The American Journal of Surgery - Category: Surgery Source Type: research
ConclusionsOpTrust demonstrated a positive association between ACGME general surgery Milestones and OSATS scores. Overall, OpTrust may help optimize intraoperative faculty entrustment and resident entrustability, facilitating surgical trainee success during residency.
Source: The American Journal of Surgery - Category: Surgery Source Type: research
Publication date: Available online 12 December 2019Source: The American Journal of SurgeryAuthor(s): Beiqun Zhao, Nicole E. Lopez, Samuel Eisenstein, Gabriel T. Schnickel, Jason K. Sicklick, Sonia L. Ramamoorthy, Bryan M. ClaryABSTRACTBackgroundThe role of laterality for patients with synchronous metastatic colon cancer (SMCC) is not well-defined.MethodsUsing the National Cancer Database (2010-2015), we compared patients with metastatic right- (RCC) versus left-sided colon cancer (LCC). We performed Kaplan-Meier analysis to compare overall survival (OS) for each metastatic site and utilized adjusted Cox proportional hazard...
Source: The American Journal of Surgery - Category: Surgery Source Type: research
Source: American Journal of Surgery - Category: Surgery Source Type: research
Source: American Journal of Surgery - Category: Surgery Source Type: research
Source: American Journal of Surgery - Category: Surgery Source Type: research
This article provides a description of recent activities to address the local opioid crisis, a rationale for their adoption and the context in which they are being undertaken. PMID: 31825786 [PubMed - in process]
Source: Health Promotion and Chronic Disease Prevention in Canada - Category: International Medicine & Public Health Tags: Health Promot Chronic Dis Prev Can Source Type: research
More News: Chemistry | Sodium | Study