scispace - formally typeset
Search or ask a question
Topic

Aluminium hydroxide

About: Aluminium hydroxide is a research topic. Over the lifetime, 2043 publications have been published within this topic receiving 22032 citations. The topic is also known as: Al(OH)3 & Amphojel.


Papers
More filters
Journal ArticleDOI
TL;DR: Routine measurements of serum aluminium levels in patients without renal impairment are not considered necessary following antacid therapy, however, the use of antacids with an aluminium absorption rate as low as possible is recommended.
Abstract: We studied the serum aluminium levels of 30 intensive care patients receiving six daily doses of magaldrate (Riopan®) or aluminium hydroxide (Trigastril®). In both groups we found a significant rise of the serum aluminium concentration (p<0.01) following administration of the antacid solutions. Examination on day 9 and 15 the magaldrate group showed significantly (p<0.05) lower aluminium levels than the aluminium hydroxide group. An increase up to the critical serum aluminium level of 100 ng/ml occurred in none of the patients that all had normal or slightly impaired renal function. Therefore routine measurements of serum aluminium levels in patients without renal impairment are not considered necessary following antacid therapy. However, we recommend the use of antacids with an aluminium absorption rate as low as possible.

11 citations

Journal ArticleDOI
TL;DR: In this paper, the structure of Raney catalysts modified by chromium deposition was investigated by transmission electron microscopy and scanning transmission-empowered X-ray spectrometry.

11 citations

Journal ArticleDOI
TL;DR: The results of conductimetric measurements on dilute aluminium chloride solutions at 25° were found to be best fitted by the limiting equivalent conductances A01/3Al3 + = A 01/2AlOH2+ = 58.2 with the parameter for ionic diameter 6.0A.
Abstract: The results of conductimetric measurements on dilute aluminium chloride solutions at 25° were found to be best fitted by the limiting equivalent conductances A01/3Al3 + = A01/2AlOH2+ = 58.2 with the parameter for ionic diameter 6.0A and by *K1 = log [(AlOH2+)(H+)/(Al3+)] = - 5.05 when it was assumed that AlOH2+ and H+ concentrations produced by hydrolysis were equal in the measured solutions. Potentiometric measurements and calculations from solubility work gave *K1 = -5.00 and -4.97 respectively. After small changes, e.g. by aging, dilute aluminium salt solutions conform to the solubility expression for aluminium hydroxide, log [(AlOH2+) (OH-)2] = -23.31.

11 citations

Journal ArticleDOI
TL;DR: Comparison in vitro ciprofloxacin solubility and dissolution studies were performed in the reactive media containing aluminium hydroxide, calcium carbonate or zinc sulphate, indicating that small volume dissolution experiments can be useful for biorelevant dissolution tests.
Abstract: Ciprofloxacin bioavailability may be reduced when ciprofloxacin is co-administered with metallic ion containing preparations. In our previous study, physicochemical interaction between ciprofloxacin and ferrous sulphate was successfully simulated in vitro. In the present work, comparative in vitro ciprofloxacin solubility and dissolution studies were performed in the reactive media containing aluminium hydroxide, calcium carbonate or zinc sulphate. Solid phases collected from the dissolution vessel with aluminium hydroxide, calcium carbonate and zinc sulphate were investigated for their properties. The results obtained indicate that different types of adducts may form and retard ciprofloxacin solubility and dissolution. In the case of aluminium, no phase changes were observed. The solid phase generated in the presence of calcium carbonate was identified as hydrated ciprofloxacin base. Similarly to iron, a new complex consistent with Zn(SO4)2(Cl)2(ciprofloxacin)2 × nH2O stoichiometry was generated in the presence of relatively high concentrations of ciprofloxacin hydrochloride and zinc sulphate, indicating that small volume dissolution experiments can be useful for biorelevant dissolution tests.

11 citations

Journal ArticleDOI
TL;DR: In this paper, an EF cell was operated in batch mode and comprised two flat sheet electrodes, an aluminium anode and stainless steel cathode, which were immersed in the treated suspension, and connected to an external DC power supply.
Abstract: Electroflocculation (EF) is a coagulation/flocculation process in which active coagulant species are generated in situ by electrolytic oxidation of an appropriate anode material. The effect of colloidal suspension pretreatment by EF on membrane fouling was measured by flux decline at constant pressure. An EF cell was operated in batch mode and comprised two flat sheet electrodes, an aluminium anode and stainless steel cathode, which were immersed in the treated suspension, and connected to an external DC power supply. The cell was run at constant current between 0.06-0.2A. The results show that pre-EF enhances the permeate flux at pH 5 and 6.5, but only marginal improvement is observed at pH 8. At all pH values cake formation on the membrane surface was observed. The differences in membrane behavior can be explained by conventional coagulation theory and transitions between aluminium mononuclear species which affect particle characteristics and consequently cake properties. At pH 6.5, where sweep floc mechanism dominates due to increased precipitation of aluminium hydroxide, increased flux rates were observed. It is evident that EF can serve as an efficient pretreatment to ultrafiltration of colloid particles.

11 citations


Network Information
Related Topics (5)
Particle size
69.8K papers, 1.7M citations
75% related
Scanning electron microscope
74.7K papers, 1.3M citations
70% related
Calcium
78.5K papers, 2.2M citations
69% related
Adsorption
226.4K papers, 5.9M citations
69% related
Copper
122.3K papers, 1.8M citations
68% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20234
202222
202123
202031
201936
201863