scholarly journals The new life of traditional water treatment flocculant polyaluminum chloride (PAC): a green and efficient micro–nano reactor catalyst in alcohol solvents

RSC Advances ◽  
2022 ◽  
Vol 12 (2) ◽  
pp. 655-663
Author(s):  
Gang Wang ◽  
Pengcheng Hao ◽  
Yanping Liang ◽  
Yuwang Liang ◽  
Wanyi Liu ◽  
...  
Keyword(s):  
Water Treatment ◽  
Organic Synthesis ◽  
Polyaluminum Chloride ◽  
Alcohol Solvents ◽  
Synthesis Reactions

The polyaluminum chloride–ethanol micro–nano reactor is a green, efficient, easy-to-handle and economical catalyst for catalyzing organic synthesis reactions.

scholarly journals Removing Iron and Organic Substances from Water over the Course of Its Treatment with the Application of Average and Highly Alkaline Polyaluminium Chlorides

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1367
Author(s):  
Izabela Krupińska
Keyword(s):  
Water Treatment ◽  
Human Consumption ◽  
Iron Ions ◽  
Organic Substances ◽  
Iron Compounds ◽  
Polyaluminum Chloride ◽  
Coagulation Process ◽  
Lack Of Information ◽  
Organic Complexes ◽  
Polyaluminium Chloride

In topic-related literature pertaining to the treatment of water, there is a lack of information on the influence of iron ions in highly basic polyaluminum chlorides on the efficiency of purifying water with increased contents of organic substance. The aim of this work was to determine the changes in the content of organic substances as well as iron compounds in water intended for human consumption following unit treatment processes with particular attention paid to the coagulation process. As coagulants, polyaluminium chloride PAXXL10 with an alkalinity of 70%, as well as polyaluminium chloride PAXXL1911 with an alkalinity of 85% the composition of which also contained iron, were tested. The analysis of the obtained results showed that iron compounds and organic substances were removed to the greatest extent by the coagulation process, which also had a significant influence on the final efficiency of water treatment. The effectiveness of water treatment was determined by the type of tested polyaluminum chloride, which influenced the formation of iron-organic complexes. The reason behind the formation of colored iron-organic complexes during coagulation using PAXXL1911 coagulant was the high pH (approx. 8), at which the functional groups of organic substances, due to their dissociation, are more reactive in relation to iron, and possibly the fact of introducing additional iron ions along with the coagulant.

Acetonitrile as Reagents in Organic Synthesis: Reactions and Applications

2017 ◽  
pp. 355-375
Author(s):  
Shun-Yi Wang ◽  
Xue-Qiang Chu ◽  
Yi Fang ◽  
Shun-Jun Ji
Keyword(s):  
Organic Synthesis ◽  
Synthesis Reactions

Acidic and hydrogen peroxide treatment of polyaluminum chloride (PACL) sludge from water treatment

2004 ◽  
Vol 50 (9) ◽  
pp. 99-105 ◽  
Author(s):  
J.H. Kwon ◽  
K.Y. Park ◽  
J.H. Park ◽  
S.H. Lee ◽  
K.H. Ahn
Keyword(s):  
Hydrogen Peroxide ◽  
Sulfuric Acid ◽  
Water Treatment ◽  
Specific Resistance ◽  
Water Treatment Sludge ◽  
H2o2 Treatment ◽  
Polyaluminum Chloride ◽  
Fenton’S Reaction ◽  
Hydrogen Peroxide Treatment ◽  
H2o2 Oxidation

The water treatment sludge including coagulants cannot be easily removed by conventional dewatering methods. The possibility of hydrogen peroxide (H2O2) oxidation as a pretreatment to enhance the dewaterability of polyaluminum chloride (PACl) sludge from water works was investigated. H2O2 treatment alone was not effective but H2O2 treatment under acidic condition significantly reduced both the cake water content and specific resistance to filtration (SRF), indicating the enhancement of dewaterability and filterability. The filterability after acid/H2O2 treatment was comparable to polymer conditioning and even more dewatered cake than polymer conditioning was produced. By H2O2 combined with sulfuric acid (H2SO4), leached iron caused Fenton's reaction, which showed a potential to significantly reduce the amount of solids mass and to produce more compact cake with higher filterability.

Cationic Starch and Polyaluminum Chloride as Coagulants for River Nile Water Treatment

2020 ◽  
Vol 10 ◽  
pp. 100331 ◽  
Author(s):  
Sayeda M. Abdo ◽  
Rehab H. Mahmoud ◽  
Marwa Youssef ◽  
Mehrez E. El-Naggar
Keyword(s):  
Water Treatment ◽  
River Nile ◽  
Cationic Starch ◽  
Polyaluminum Chloride ◽  
Nile Water
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