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The effect of phosphoric acid etching duration on the bond strength of universal adhesive on enamel with or without erosion [PDF]

open access: yesFrontiers in Dental Medicine
This study evaluated the effect of phosphoric acid etching duration on the bond strength of a universal adhesive (UA) on enamel, both with and without erosion (0.3% citric acid with a pH of 2.6 for 5 min four times a day for five consecutive days). Flat,
Shasha Huang   +5 more
doaj   +2 more sources

Structural Changes of Oil Palm Empty Fruit Bunch (OPEFB) after Fungal and Phosphoric Acid Pretreatment

open access: yesMolecules, 2012
Oil palm empty fruit bunch (OPEFB) was pretreated using white-rot fungus Pleurotus floridanus, phosphoric acid or their combination, and the results were evaluated based on the biomass components, and its structural and morphological changes.
Mohammad J. Taherzadeh   +6 more
doaj   +3 more sources

Effects of phosphoric acid concentration on properties of activated carbon from Strychnos spinose fruit shells [PDF]

open access: yesScientific Reports
The accumulation of agricultural wastes in the environment is an emerging challenge. Their thermochemical conversion to activated carbon represents an efficient form of utilization that minimizes the secondary pollution caused by conventional treatment ...
John Chagu, Alinanuswe Joel Mwakalesi
doaj   +2 more sources

Chiral phosphoric acid and its applications of asymmetric catalytic hydrogenation [PDF]

open access: yesE3S Web of Conferences, 2021
As an excellent representative of organic small molecular catalysts, chiral phosphoric acid played an important role in asymmetric catalytic hydrogenation.
Zhuoxin Sun
doaj   +1 more source

Extraction of cadmium from phosphoric acid by a synthesized extracting agent [PDF]

open access: yesE3S Web of Conferences, 2020
The Purification of phosphoric acid used several extractants from the family of oxygenates, sulfurous or amino compounds. In this work, we were interested in the synthesis, physico-chemical and spectroscopic characterization, and use of the product ...
Berkalou Kaoutar   +4 more
doaj   +1 more source

Preparation of Activated Carbon from Bagasse by Microwave-Assisted Phosphoric Acid Activation

open access: yesWalailak Journal of Science and Technology, 2021
This research focuses on the utilization of bagasse as activated carbon (AC) under microwave-assisted phosphoric acid activation. The AC was activated using various frequencies of microwave energy combined with phosphoric acid before the carbonization ...
Suthatip SINYOUNG   +2 more
doaj   +3 more sources

Corrosion behavior and passive film properties of nickel-based alloy in phosphoric acid

open access: yesCorrosion Communications, 2023
Corrosion behavior and passive film properties of nickel-based alloy (Inconel 625) in phosphoric acid were investigated, by means of a variety of electrochemical methods combined with surface analysis techniques. Results showed that Inconel 625 exhibited
Yuan Zhang   +6 more
doaj   +1 more source

Study on Electrochemical Performance of Dimensionally Stable Anodes during Zinc Electrowinning [PDF]

open access: yesArchives of Metallurgy and Materials, 2023
In zinc electrowinning, small amounts of manganese ions additives are needed in the electrolyte to reduce the corrosion of anodes and minimize the contamination of cathodic zinc by dissolved lead.
Wei Zhang   +3 more
doaj   +1 more source

Magnesium removal from phosphoric acid by precipitation: Optimization by experimental design [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2021
High content of magnesium in phosphate and phosphoric acid affects negatively the performance and operating conditions in phosphate industry. A content of more than 0.3% in phosphate increases the P2O5 losses during phosphate digestion and filtration ...
Mahrou Ahmed   +4 more
doaj   +1 more source

Phosphoric acid pretreatment of poplar to optimize fermentable sugars production based on orthogonal experimental design

open access: yesFrontiers in Chemistry, 2023
The recalcitrant structure of raw poplar limited the production of fermentable sugars when applied as the material in the pretreatment of biochemical conversions.
Deming Chen   +7 more
doaj   +1 more source

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