Potassium phosphate/magnesium oxide modified biochars: Interfacial chemical behaviours and Pb binding performance

2021 ◽  
Vol 759 ◽  
pp. 143452
Author(s):  
Qiuci Miao ◽  
Guanghe Li
2020 ◽  
Vol 231 ◽  
pp. 117098 ◽  
Author(s):  
Arnold Ismailov ◽  
Niina Merilaita ◽  
Soili Solismaa ◽  
Marjaana Karhu ◽  
Erkki Levänen

2021 ◽  
Vol 10 (5) ◽  
pp. 958
Author(s):  
Sandro Mazzaferro ◽  
Natalia de Martini ◽  
Jorge Cannata-Andía ◽  
Mario Cozzolino ◽  
Piergiorgio Messa ◽  
...  

The impressive estimated number of chronic kidney disease (CKD) patients in the world justifies any possible effort at implementing preventive measures of disease progression. Renal insufficiency is associated with significant changes in the electrolyte handling and body balance of sodium, potassium, phosphate, magnesium, and calcium, all of which are biologically vital molecules. Dietary habits could contribute significantly to the optimal management of possible derangements. In this review, we examined the available evidence recommending dietary prescriptions for these five elements aiming at reducing CKD progression. Clear evidence that specific dietary prescriptions may halt or reduce CKD progression is lacking. However, some practical recommendations are possible to prescribe the best possible therapy to the individual CKD patient.


2014 ◽  
Vol 40 (8) ◽  
pp. 13543-13551 ◽  
Author(s):  
Yongshan Tan ◽  
Hongfa Yu ◽  
Ying Li ◽  
Chengyou Wu ◽  
Jinmei Dong ◽  
...  

2020 ◽  
Vol 11 (3-2020) ◽  
pp. 103-107
Author(s):  
P. A. Krokhicheva ◽  
◽  
M. A. Goldberg ◽  
A. S. Baikin ◽  
D. R. Khayrutdinova ◽  
...  

The main highlights in this paper are about investigation of cation-dopped cements based on the calcium phosphate —magnesium phosphate system with a ratio of (Ca + Mg) / P = 2 containing 40 mol. % Mg for application in the reconstructive surgery. The powders were synthesized by the method of deposition from a salt solution, the powders were certified using the X-ray phaseanalysis (XRD), the main phases were the magnesium-substituted vitlokite phase (Ca2,589Mg0,411PO4), magnesium oxide MgO, and stanfeldite (Mg3Ca3(PO4)4. The setting time of cement samples with mixing phosphate fluid is 6–9 min; the high mechanical properties are exhibited by the samples with a content of 0,5 mass % Zn (26,5 ± 1,3 MPa).


2018 ◽  
Vol 142 ◽  
pp. 02007 ◽  
Author(s):  
Sainan Xing ◽  
Chengyou Wu

Potassium magnesium phosphate cement (MKPC) was prepared by using magnesium oxide (MgO) and potassium dihydrogen phosphate (KH2PO4, KDP). The effects of different calcination temperature, water-cement ratio and ratio on the operation of magnesium phosphate cement were studied. The effects of different water - cement ratio and ratio on the bonding strength of potassium magnesium phosphate cement and the application of potassium phosphate and magnesium cement in concrete repair and reinforcement were determined by experiments such as bending resistance, splitting, compression and bearing capacity. The experimental results show that the calcination temperature is 1100 °C, the calcination time is 1h, the settling time of magnesium oxide is 39min, and the compressive strength of one day reaches 53MPa. The water - cement ratio with the best bonding strength is 0.2, the mass ratio is 2:1.To meet the rapid repair of the construction requirements, is expected to be applied to the actual repair works.


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