synthesis of polyaluminum chloride: optimization of process ...

Synthesis of polyaluminum chloride: Optimization of process ...

Clay-brine process employing activated clay, NaCl, HCl, and HF as raw materials is the primarily advanced technology to synthesize cryolite in the present industrial grade.

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 ... preparation and characterisation of polyaluminium silicate chloride ...

... Preparation and characterisation of polyaluminium silicate chloride ...

The preparation process included the preparation of polyaluminium chloride and polysilicic acid followed by the compounding … To improve the coagulation efficiency for water treatment purposes, a composite aluminium-silicon coagulant, the polyaluminium silicate chloride was prepared and characterised.

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preparation and characterisation of new-polyaluminum chlorid ...

Preparation and characterisation of new-polyaluminum chlorid ...

This document summarizes a research article that studied the preparation and characterization of polyaluminium silicate chloride (PASiC), a composite coagulant for water treatment. The coagulant was prepared by combining polyaluminium chloride and polysilicic acid solutions. Characterization techniques found that PASiC had lower polynuclear aluminum content and charge neutralization capacity ...

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polyaluminium silicate chloride—a systematic study for ...

Polyaluminium silicate chloride—A systematic study for ...

Scientific World, 2012 Polyaluminium silicate chloride (PASiC) coagulant was synthesized by co-polymerization technique using aluminium salt and polysilicic acid at different OH/Al and Al/Si molar ratios. A synthetic turbid sample was used to investigate the ...

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red mud-based polyaluminium ferric chloride flocculant: prep ...

Red mud-based polyaluminium ferric chloride flocculant: Prep ...

The effect of PAFC and commercial polyaluminium ferric chloride flocculants used under different flocculation conditions were compared. The chemical oxygen demand, UV 254 , chroma, total organic carbon, and PAFC settlement height at a flocculant concentration of 1.2 g/L and solution pH of 6 were 72.2%, 79.2%, 82.9%, 82.6%, and 9.5 cm (within 90 min), respectively.

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a systematic study for the characterization of a novel ...

A systematic study for the characterization of a novel ...

A highly efficient polyaluminium ferric chloride (PAFC) flocculant was prepared by adjusting the pH of a leaching solution, the molar ratio of Al to Fe, and the polymerisation temperature. The effects of synthesis and flocculation conditions on the flocculation performance of aged landfill leachate were investigated.

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 ... polyferric sulphate: preparation, characterisation and application ...

... Polyferric sulphate: Preparation, characterisation and application ...

The preparation process included the preparation of polyaluminium chloride and polysilicic acid followed by the compounding of the two solutions. The prepared polyaluminium silicate chloride coagulant solution had an aluminium concentration of 0.10 mole per litre, hydroxyl to aluminium molar ratios between 0.5 and 2.0, and silicon to aluminium molar ratios between 0.075 and 0.075.

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study of aluminium speciation in the coagulant composite of ...

Study of aluminium speciation in the coagulant composite of ...

In order to increase further their flocculation efficiency, the combination of a cationic IPF (polyaluminium chloride, PACl) and an anionic polyelectrolyte in one unique reagent is proposed in this study. During this investigation, several composite coagulants were

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Does pH affect the performance of polyaluminum chloride (PAC)?

The performance of PAC was dependent on pH. The synthesized PΑC was efficient coagulant for water treatment. The present work was aimed to synthesis of polyaluminum chloride (PAC) using calcium oxide as a basification agent and optimization of process parameters on the yield of medium polymer species in PAC.

Can polyaluminum chloride be used in water treatment?

In this study, synthesis and speciation of polyaluminum chloride (PAC) for application in water treatment was investigated using a colorimetric speciation method. It was possible to produce stable preparations of PAC solutions in which a relatively stable cationic polymer predominated.

What are the synthesis parameters of aluminum chloride hexahydrate?

The synthesis parameters were concentration of aluminum chloride hexahydrate (0.4 to 0.8 M), basicity ratio (2.0 to 2.4), reaction temperature (60 to 80 °C) and time (180 to 360 min). The performance of PΑC for water treatment was also investigated. The monomeric, medium polymeric and colloidal species of PAC were determined by Ferron test method.

Why is polyaluminum chloride a good coagulant for water treatment?

Polyaluminum chloride (PAC) is highly effective coagulant for water treatment over conventional coagulants because of low dosage requirement, shorter flocculation time, smaller amount of sludge, high efficiency and low aluminum residual in treated water .

Does low concentration of aluminum chloride favored the formation of lb species?

Low concentration of aluminum chloride favored to the formation of Αlb species of PΑC. The flocculation tendency of PAC was very high in water. The performance of PAC was dependent on pH. The synthesized PΑC was efficient coagulant for water treatment.

What is the performance of synthesized PAC compared with aluminum sulfate?

The performance of synthesized PAC compared with aluminum sulfate, aluminum chloride and commercial PAC for water treatment. 4. Conclusion The synthesis of PΑC results revealed that the low concentration of aluminum chloride favored to the formation of Αl b species of PΑC and the high concentration preferred to the formation of Αl c species of PΑC.