Do polyaluminium chloride and anionic polyacrylamide water treatment residuals adsorb phosphorus?

Polyaluminium chloride and anionic polyacrylamide water treatment residuals (PAC-APAM WTRs) as an amendment in three types of soils with the ratios (w/w) of 10%, 15%, and 20% were evaluated for phosphorus adsorption from aqueous solutions by batch studies.

Do poly-aluminum chloride and aluminum sulfate reduce turbidity levels in synthetic water?

eness of poly-aluminum chloride (PAC) and aluminum sulfate (alum) i reducing turbidity levels in synthetic water. PAC and alum are extensively used in water treatment plants in Iran. Their performance was evaluated at differen pH values and coagulant dosage in order to find optimal operational conditions for low to hi

Why do we add calcium based chemical stabilizers to clay?

The addition of calcium-based chemical stabilizers improves volume stability and strength of clay. The stabilization process primarily depends on the proportion of the additive, clay mineralogy, soil type, pH of the soil matrix, curing period, F-T, curing temperature and presence of deleterious compounds (e.g. organic matter and sulfate).

Does PAC reduce aggregation compared to aluminum sulfate?

・PAC could reduce the amount of basic agent much more effectively compare to Aluminum Sulfate, as it consumes less basicity. ・PAC (especially # 100W / 100H) proved that the aggregation effect does not decrease significantly even with low-temperature and low basicly water in the winter. Compare to Aluminum Sulfate.

Does chemical stabilization of clay improve volume stability and stiffness?

Review of current and past studies on chemical stabilization of clays. Chemical stabilizers improve volume stability and stiffness of clay. The presence of organic and sulfate compounds affect deleteriously on the stabilization. Additives combined effects are more efficient than their individual effect.

Which chemical additive is used in stabilization?

Stabilization with cement Other than lime, the most prominent chemical additive is ordinary Portland cement (OPC) which has been extensively used for somewhere about 100 years (Estabragh et al., 2014; Ma et al., 2018).