Enhanced coagulation of ferric chloride aided by tannic acid for phosphorus removal from wastewater

Thermodynamic modeling of ferric phosphate precipitation for phosphorus removal and recovery from wastewater

“…Aluminum salts are not practical to use as fertilizer considering the public health concerns of aluminum, thus no attention has been paid to the reuse of the removed phosphorus [13]. Compared with alum, iron salts are more promising in the practical application of phosphorus removal and recovery because of their relatively low cost and high phosphorus removal efficiency [14]. Zhou et al [14] selected ferric chloride as a coagulant and tannic acid as a coagulant aid to remove phosphorus from different kinds of wastewater.…”

“…Compared with alum, iron salts are more promising in the practical application of phosphorus removal and recovery because of their relatively low cost and high phosphorus removal efficiency [14]. Zhou et al [14] selected ferric chloride as a coagulant and tannic acid as a coagulant aid to remove phosphorus from different kinds of wastewater. The total-P removal ratios of 94%, 93%, and 96% were achieved for artificial sewage, sewage from wastewater treatment plant, and pesticide industrial wastewater, respectively.…”

Tannic acid adsorption on amino-functionalized magnetic mesoporous silica

“…A variety of treatment techniques have been developed to remove TA in water, including chemical oxidation, electrochemical method, coagulation, ultrafiltration, adsorption, and biological method [5][6][7][8][9]. Among them, the adsorption method has been intensively investigated.…”

Effects of tannin-fluoride and milk-fluoride mixture on human enamel erosion from inappropriately chlorinated pool water

“…Interestingly, the increase in fluoride concentrations was associated with reduction of phosphorus level. We speculated that tannin might have interacted with phosphorus and form a tannin-phosphorus complex (38). A previous study demonstrated formation of phosphate-containing CaF 2 on enamel treated with acidified solution with high concentration fluoride (10).…”