What is anionic Pam used for?

Anionic PAM: It is widely used in waste water treatment of chemical industry, municipal sewage treatment, such as coal washing, mineral processing, metallurgy, iron and steel industry and electronic industry. It is also used in oil industry to enhance oil recovery which is widely used.

What is high-purity poly-aluminum chloride (PACL)?

Poly-aluminum chloride (PACl) is one of the common coagulants for water and wastewater treatment. A new Chinese national standard of PACl has been implemented, where the concentration of insoluble substances, iron and heavy metals is to be controlled strictly, then researches on the preparation of high-purity PACl are needed.

What is the molecular formula of poly-aluminum chloride?

One of the major pre-polymerized coagulants, poly-aluminum chloride (PACl) is used broadly for water and wastewater treatment. PACl contains different amounts of hydroxyl, and the molecular formula of PACl is [Al m (OH) n (H 2 O) x]·Cl 3m−n (n ≤ 3 m).

How many fractions of polyaluminum chloride are there?

Polyaluminum chloride (PAC) is an important flocculant in water treatment (Li et al., 2010). It can be divided into three fractions (Bersillon et al., 1980;Parker and Bertsch, 1992): Al a (mono-nuclear Al), Al b (reactive polynuclear Al), and Al c (larger polynuclear and solid-phase aluminum trihydroxides). …

What is the molecular formula for Pac?

PAC contains different amounts of hydroxyl, and the empirical molecular formula is [Al m (OH) n (H 2 O) x ]⋅Cl 3m-n (0 < n ≤ 3 m) (Li et al., 2010). The chemical reaction during the formation of PAC is presented in Eq. (9) (Guo et al., 2022). … …

What is the difference between high-purity PACL and conventional PACL?

The preparation process of high-purity PACl and conventional PACl is different as stated previously, where raw materials used and the operating conditions are different. As shown in Table 5, Al (OH) 3 is relatively expensive than bauxite but sulfydryl/PAM polymer is cheaper.