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.
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TL;DR: In this paper, the process of hydrolysis of aqueous aluminium sulfate was carried on in ammonia medium at 100°C and for different time intervals (0, 20, 39 or 59 h).
Abstract: The process of hydrolysis of aqueous aluminium sulfate was carried on in ammonia medium at 100°C and for different time intervals (0, 20, 39 or 59 h). The products thus obtained were calcined at 550, 900 or 1200°C for 2 h with the aim to obtain aluminium oxides. The materials were studied with the following methods: thermal analysis, IR spectroscopy, X-ray diffraction, low-temperature nitrogen adsorption, adsorption–desorption of benzene vapours and scanning electron microscopy.
12 citations
Journal Article•
TL;DR: The influence of aluminium hydroxide and magnesium oxide on the oral bioavailability of quinidine, procainamide and propranolol in the dog was investigated and a shift in tmax was observed for the conventional preparation only.
Abstract: The influence of aluminium hydroxide and magnesium oxide on the oral bioavailability of quinidine, procainamide and propranolol in the dog was investigated. The administration of aluminium hydroxide with a quinidine sulfate capsule causes a significant decrease of maximal plasma concentration (Cpmax) and a shift in tmax (time to reach Cpmax). The area under the curve is not significantly decreased. Administration of magnesium oxide together with a quinidine sulfate capsule or a sustained-release preparation of quinidine bisulfate causes a significant decrease of both Cpmax and the area under the curve. A shift of tmax was observed for the conventional preparation only. The administration of aluminium hydroxide with procainamide hydrochloride diminishes only Cpmax in a significant way. Administration of magnesium oxide together with procainamide hydrochloride has no influence on the different parameters. Administration of aluminium hydroxide or magnesium oxide with propranolol hydrochloride has a significant negative influence on both the Cpmax and the area under the curve.
12 citations
01 Jan 2021
TL;DR: In this paper, a novel activated carbon derived from Raffia palm shells was synthesized firstly by activating the precursor with phosphoric acid to produce raffia Palm Shell Activated Carbon (RPSAC) and further functionalized by coating its surface with aluminium hydroxide to produce a composite called Aluminium Oxide-coated Raddia Palm shell activated carbon (AC-PSAC), which demonstrated excellent qualities and fluoride adsorption capacity as compared to RPSAC.
Abstract: In this study a novel activated carbon derived from Raffia palm shells was synthesized firstly by activating the precursor with phosphoric acid to produce Raffia Palm Shell Activated Carbon (RPSAC) and further functionalized by coating its surface with aluminium hydroxide to produce a composite called Aluminium Oxide-coated Raffia Palm Shell Activated Carbon (ACRPSAC). These adsorbents were extensively characterized and tested for fluoride adsorption in aqueous media using batch adsorption experiment in comparison with a commercially available activated carbon (CAC). ACRPSAC demonstrated excellent qualities and fluoride adsorption capacity as compared to RPSAC. SEM/EDX revealed that ACRPSAC developed both micro and meso-pores on its surface with BET-surface area and pore volume of 715.80 m2/g and 0.47 cm3/g respectively. FTIR and XRD proved that ACRPSAC was largely amorphous and had sufficient functionality for fluoride uptake in solution. Batch adsorption studies showed that the fluoride removal abilities were in the order of ACRPSAC > RPSAC > CAC with maximum Langmuir adsorption capacity of 4.10 > 2.26 > 2.24 mg/g. respectively. The experimental data was well described by the Langmuir (R2 = 0.8802–0.9751) and the pseudo-second order kinetic (R2 = 0.9974–0.9999) models, signifying that fluoride uptake by the adsorbents was a chemisorption process. Thermodynamic studies revealed that the process was spontaneous, endothermic and feasible for ACRPSAC and RPSAC but was non-spontaneous for CAC. It was concluded that ACRPSAC is an excellent activated carbon for eliminating fluoride from groundwater and can be further studied for its commercialization.
12 citations
TL;DR: The analysis of variance (ANOVA) was used to test the effect of changes of temperature and pH of precipitation, the time of aging and the addition of surfactants on the porous structure of dried aluminium hydroxide (containing sulphate ions) as mentioned in this paper.
Abstract: The analysis of variance (ANOVA) was used to test the effect of changes of temperature and pH of precipitation, the time of aging and the addition of surfactants on the porous structure of dried aluminium hydroxide (containing sulphate ions). Changes in precipitation temperature effect the structure of samples, the most pronounced effect being observed in the region of large and small pores. The less distinct effect is exerted by pH of precipitation which affects especially small pores. The time of aging up to 48 h has little effect; it affects the volume of large and medium pores. The addition of surfactants during precipitation and washing leads to the increase of large and medium pores volume. Surfactants eliminate relatively efficiently the effect of aging time. Cationic and nonionic surfactants act similarly, but with different intensity, affecting the porous structure of aluminium hydroxide.
12 citations
12 citations