phosphorus in sponge iron

Study of Phosphorus Removal by Using Sponge Iron ...

12%Phosphorus is one of the key elements causing lake eutrophication. This paper deals with phosphate removal by Sponge iron in batch and fixed-bed operation. Isotherm and kinetic studies are conducted. The isotherm data is described by the Freundlich and Langmuir model, while the kinetic data of adsorption is fitted by the pseudo-second-order kinetic model. The saturated …

(PDF) phosphorous behavior in electric arc furnace ...

Experiments were conducted in a 70 t UHP electric arc furnace to study the phosphorus behaviour in steelmaking with sponge iron. The proportion of sponge iron …

Adsorptive removal of phosphorus from aqueous solution ...

The adsorptive removal of phosphorus stabilized after an adsorption time of 4 h. The phosphorus removal efficiency of each substrate increased with increasing adsorption time. When the adsorption time was 4 h, the TP removal efficiencies for sponge iron and zeolite were 94.93% and 73.62%, respectively.

US3523020A - Continuous phosphorus removal in electric-arc ...

US3523020A US643143A US3523020DA US3523020A US 3523020 A US3523020 A US 3523020A US 643143 A US643143 A US 643143A US 3523020D A US3523020D A US 3523020DA US 3523020 A US3523020 A US 3523020A Authority US United States Prior art keywords phosphorus slag iron furnace bath Prior art date Legal status (The legal status is an assumption and is not a …

[Phosphorus Removal Mechanism of Sulfur/Sponge Iron ...

The research result showed that the phosphorus removal ratio of sponge iron/sulfur composite fillers was over 95%, which was increased by 30% as compared to only sponge iron filler. In addition, the effluent TP concentration was reduced to less than 0.1 mg·L-1. The analysis of X-ray diffraction(XRD)and total iron concentration indicated that ...

SPONGE IRON – Lloyd's Metals

Sponge iron is also known as Direct Reduced Iron (DRI). Direct reduction, is an alternative route of iron making has been developed to overcome some of these difficulties of conventional blast furnaces. DRI is successfully manufactured through either gas or coal-based technology. Iron ore is reduced in solid state at 800-1050 c either by ...

(PDF) Effective utilization of a sponge iron industry by ...

A typical sponge iron industry to the possible application of the waste for phosphate adsorption. (using DRI methodology) with 100 t per day capacity produces 25 t There are well documented literatures available suggesting that, per day dolochar, thereby generating 9000 t waste material per phosphate ions react with iron and aluminium oxides by ...

Phosphorus - Health Professional Fact Sheet

*Adequate Intake (AI) Sources of Phosphorus. Food Many different types of foods contain phosphorus, including dairy products, meats and poultry, fish, eggs, nuts, legumes, vegetables, and grains [13,14].In the United States, dairy products contribute about 20% of total phosphorus intakes, and bakery products (e.g., breads, tortillas, and sweet bakery products) contribute 10% [].

Functions of Phosphorus in Plants

fertilizer phosphate followed similar trends to the U.S., but reached a high of 798,164 tons of P 2O 5 in 1985 (Figure 1). Consumption declined to 637,175 tons in 1991, but has since increased to 775,370 tons in 1997. About 75 percent of Canada's phosphate con-sumption occurs in the prairie provinces (Alberta, Manitoba and Saskatchewan). 6,000

Are sulfur and phosphorus used in steel production? - Quora

Answer (1 of 3): Both Sulfur and Phosphorus are considered impurities because even in small amounts they can drastically reduce the strength of steel especially when it's hot. The compounds that Sulfur and Phosphorous form in steel have a relatively low melting point. These compounds can more or ...

Sponge Iron | Scientific.Net

And then another series of comparative experiments on the total phosphorus removal efficiency of 4 kinds of infiltration media combinations are also conducted, the experimental results show that the phosphorus adsorption capacity of sponge iron is the best one among the special infiltration media selected；the phosphorus removal efficiency of ...

Phosphorus Basics – The Phosphorus Cycle

Phosphorus is in its most plant available form when the pH is between 6 and 7 (Figure 2). At higher pH, P can precipitate with Ca. At lower pH, P tends to be sorbed to Fe and Al compounds in the soil. Phosphorus Adsorption Low Medium High I I II II I 3 4 56 78 9 pH Maximum Plant Available P P bound to iron and/or aluminum P bound to calcium

The Direct Reduction of Iron Ore

sponge iron, so named because the removal of oxygen from iron ore without melting leaves a honeycomb microstructure that resembles a sponge. The sponge iron was made by putting charcoal and iron ore in a shallow hearth, in which intense heat was ... and phosphorus picked up from the raw

Enhanced phosphorus removal by microbial-collaborating ...

The chemical precipitation of Fe(III) is the main form of phosphorus removal. In addition, there exists adsorption phosphorus removal by phosphate-accumulating organisms. The mechanism of the enhanced phosphorus removal by microbial-collaborating sponge iron was thus proposed.

Removal of Phosphorous from Steel Produced by Melting ...

Removal of Phosphorous from Steel Produced by Melting Sponge Iron in Induction Furnace Removal of Phosphorous from Steel Produced by Melting Sponge Iron in Induction Furnace Bedarkar, Swaren; Singh, Ram 00:00:00 Trans Indian Inst Met (June 2013) 66(3):207–211 DOI 10.1007/s12666-013-0244-z TECHN ICAL PAP E R TP 2664 Removal of Phosphorous from …

Phosphorus Capture and Recovery | MetaMateria

PO4 Sponge - Attractive for Both Removal and Recovery MetaMateria's PO4 Sponge offers an effective way to remove soluble P from water. This is a unique, porous, high surface area material that contains iron-oxyhydroxide nano-crystals, providing an extremely large number of …

The Relevance of Phosphorus and Iron Chemistry to the ...

The addition of iron is a convenient way for removing phosphorus from wastewater, but this is often considered to limit phosphorus recovery. Struvite precipitation is currently used to recover phosphorus, and this approach has attracted much interest. However, it requires the use of enhanced biologi …

IS 15774 (2007): Sponge Iron/Directed Reduced Iron (DRI ...

sponge iron, and is equal to the sum of free and combined carbon (as cementite). 3.8 Impurities — These are undesirable elements/ compounds in sponge iron, sulphur and phosphorus being the most common among them. 3.8.1 Gangue — It is the amount of other impurities present in sponge iron (resulting from the raw

Effects of four different phosphorus-locking materials on ...

The phosphorus-locking efficiency of sponge-iron in overlying and interstitial water was >72 and 66 %, respectively. Meanwhile, the total phosphorus (TP), OP, Fe/Al-P, and Ca-P content in sediment increased by 33.8, 7.7, 23.1, and 23.1 %, respectively, implying that under the action of sponge-iron, the locked phosphorus in sediment was mainly ...

Phosphorus recovery from waste activated sludge by sponge ...

Taking sponge iron as seed material, the effect of different reaction conditions on the recovery of phosphorus in waste activated sludge by vivianite crystallization was studied.

Phosphorus - Low Concentration Removal

Phosphorus is removed from capture site – will not re-contaminate water Phosphorus can be recovered PO4 Sponge Product PO4 Sponge products is made in different shapes and sizes and this provides flexibility for use of the product This highly porous material is made with iron powder and other minerals bonded together.

Sponge Cake Minerals - How many minerals in Sponge Cake

Iron. The best known nutrition fact about iron is that meats and plant foods are rich in iron. More human health problems worldwide are caused by iron deficiency than by lack of any other nutrient. 100 grams of Sponge Cake contains 2.72 milligrams of iron, that's the …

Determination of phosphorus in the presence of iron(III ...

Both manual and automated techniques have been developed for the determination of phosphorus in the presence of iron(III). Interference from iron(III) has been substantially eliminated by its reduction with hydroxyl-ammonium chloride prior to the formation …

Direct Reduced Iron and its Production Processes – IspatGuru

Fig 2 Principle of direct reduction process. Gas based process. In the gas based reduction processes, a vertical shaft kiln is used in which iron ore is fed into the top of the kiln and finished sponge iron is drawn off from the bottom after cooling it so as to prevent its re-oxidation.

Phosphorus recovery from waste activated sludge by sponge ...

12%As a novel phosphorus recovery product, vivianite (Fe 3 (PO 4) 2 ·8H 2 O) has attracted much attention due to its enormous recycling potential and foreseeable economic value. Taking sponge iron as seed material, the effect of different reaction conditions on the recovery of phosphorus in waste activated sludge by vivianite crystallization was studied.

High Phosphorus (hyperphosphatemia) - American Kidney Fund ...

Phosphorus blood test Note: This is sometimes listed on lab results as "phosphate" Checks the level of phosphorus in the blood. A high level means too much phosphorus is in your blood. This is called hyperphosphatemia. Parathyroid hormone (PTH) blood test: Checks the level of PTH in your blood. Too much PTH in the blood can be a sign of a problem.

All About Phosphate And The Kidneys

Medications to lower phosphorus. The majority of people with poorly functioning kidneys or on dialysis are prescribed medications to lower the phosphate levels. These medications known as phosphate binders act like a sponge and bind the phosphorus in your food. For the phosphate binders to work, they must be consumed with food.

"DEPHOSPHORIZATION OF STEEL PRODUCED FROM …

scrap, sponge iron and cast iron. The percentage of directly reduced iron in the burden differs from 10 to 95 percent, depending on its inventory and monetary value of manufacturing. Large scale of steel formed through secondary route is alloy steel and plain carbon steel. [2]