Performances and mechanisms of simultaneous removal of …
Biofilter with sponge iron/copper and corn cobs achieved advanced N and P removal. • Effluent concentrations of NO 3 –-N and PO 4 3−-P were below 1.0 and 0.1 mg/L.. Phosphate was removed through precipitation of FePO 4 and Fe 4 (OH) 2 PO 4.. Copper coating facilitated lignocellulose degradation for improved denitrification.
Removal of Phosphorous from Steel Produced by Melting Sponge Iron …
Request PDF | Removal of Phosphorous from Steel Produced by Melting Sponge Iron in Induction Furnace | In secondary route of steelmaking, production through induction melting furnace contributes ...
Adsorptive removal of phosphorus from aqueous solution using sponge
Section snippets Materials. Sponge iron and zeolite were obtained from Henan Gongyi Hualong Filter Factory, China. Sponge iron was composed of 95% Fe 2 O 3 and other oxides; the specific surface area was ⩾80 m 2 /g. While zeolite was composed of 5% Al 2 O 3 and 95% SiO 2, the specific surface area was 500–800 m 2 /g. The two …
Microelectrolysis-integrated constructed wetland with …
Integrating sponge iron (SI) and microelectrolysis individually into constructed wetlands (CWs) to enhance nitrogen and phosphorus removal are challenged by ammonia (NH 4 +-N) accumulation and limited total phosphorus (TP) removal …
phosphorous behavior in electric arc furnace steelmaking with …
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 in the metallic feed was varied from ...
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 biological phosphorus removal (EBPR). …
Enhanced phosphorus removal by microbial-collaborating sponge iron
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 ...
In-situ anaerobic treatment removes the passivation layer of sponge …
Sponge iron (s-Fe 0) has a large specific surface area, is cheap and easy to obtain, and has a good reduction capacity.Therefore, its efficacy in enhanced wastewater denitrification and phosphorus removal has been extensively examined. Because of the strong magnetic properties and reactivity of s-Fe 0, a passivation layer dominated by …
Direct Reduced Iron
Direct Reduced Iron. Direct reduced iron (DRI) is the alternative iron source for steelmaking. Its advantages as a iron product and diluent for impurities, introduced with scrap, are well documented. DRI is also known as sponge iron. It refers to porous iron produced by the direct reduction (DR) process.
Method for measuring phosphorus content in sponge iron
A method for measuring phosphorus content in sponge iron belongs to the technical field of analytical chemistry, has the advantages of low detection limit, high accuracy and precision and low cost, and is particularly suitable for being used in sample arbitrament and laboratories with high precision and accuracy. The invention adopts mixed acid …
Performances and mechanisms of simultaneous removal of …
DOI: 10.1016/j.biortech.2023.129516 Corpus ID: 259996690; Performances and mechanisms of simultaneous removal of nitrate and phosphate by biofilter assembled with sponge iron/copper and corn cobs.
Phosphorus Recovery From Waste Activated Sludge by Sponge Iron …
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.
Performances and mechanisms of simultaneous nitrate and phosphate …
Sponge iron is a potential material for nitrogen and phosphate removal. To explore the performances and mechanisms of nitrogen and phosphate removal by sponge iron, a sponge iron biofilter was ...
Simultaneous Mixotrophic Nitrate Removal and …
The sponge iron experienced a high loss of activity after operating for a long time. To clean the sponge iron carriers, they were rinsed three times, and a simulated wastewater with a COD/N ratio of …
Phosphorus recovery from waste activated sludge by sponge iron …
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 …
Adsorptive removal of phosphorus from aqueous solution using sponge
The results of static experiments and dynamic experiments (column experiments) indicated that the adsorption of phosphorus onto sponge iron was more apt to chemical combination, but zeolite was more apt to electrostatic attraction or ion-exchange. For sponge iron, some iron (iii) (Fe(3+)) or iron (ii) (Fe(2+)) and phosphate …
(PDF) Synergistic Removal of Nitrogen and Phosphorus in …
Sponge iron is a promising material for the removal of phosphorus and nitrogen because of its strong reducing power, high electronegativity, and inexpensive cost.
Performances and mechanisms of simultaneous nitrate and …
Sponge iron is a potential material for nitrogen and phosphate removal. To explore the performances and mechanisms of nitrogen and phosphate removal by sponge iron, a sponge iron biofilter was established. The results showed that nitrate was …
Enhanced phosphorus removal by microbial-collaborating …
Abstract. The collaborative and mutually reinforcing phosphorus removal in domestic wastewater in a sponge iron and microorganisms system was studied through a laboratory and a pilot scale experiment. The results showed that the total phosphorus …
Performances and mechanisms of simultaneous nitrate and phosphate …
Sponge iron is a potential material for nitrogen and phosphate removal. To explore the performances and mechanisms of nitrogen and phosphate removal by sponge iron, a sponge iron biofilter was established. The results showed that nitrate was completely removed at HRT of 48 h without external carbon …
ASTM E278-01: Phosphorus Testing in Iron Ores
Scope of ASTM E278 : ASTM E278-01 Test Method covers the determination of phosphorus in iron ores, concentrates, and agglomerates. The phosphorus is measured from the range ( 0.01 % to …
Phosphorus recovery from waste activated sludge by sponge …
As a novel phosphorus recovery product, vivianite (Fe3(PO4)2·8H2O) 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 …
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 …
Synergistic Removal of Nitrogen and Phosphorus …
Insufficient denitrification and limited phosphorus uptake hinder nitrogen and phosphorus removal in constructed wetlands (CWs). Sponge iron is a promising material for the removal of phosphorus …
Microelectrolysis-integrated constructed wetland with sponge iron …
Integrating sponge iron (SI) and microelectrolysis individually into constructed wetlands (CWs) to enhance nitrogen and phosphorus removal are challenged by ammonia (NH 4 +-N) accumulation and limited total phosphorus (TP) removal efficiency, respectively.In this study, a microelectrolysis-assisted CW using SI as filler …
(PDF) Effects of Recycled Sponge Iron on …
In a continuous operation experiment run for approximately 200 days, the sponge iron phosphorus removal percolation bed showed a good phosphorus removal ability. Under the condition of TP = 10 mg ...
Performances and mechanisms of simultaneous nitrate and phosphate …
DOI: 10.1016/j.biortech.2021.125390 Corpus ID: 235438073; Performances and mechanisms of simultaneous nitrate and phosphate removal in sponge iron biofilter. @article{Li2021PerformancesAM, title={Performances and mechanisms of simultaneous nitrate and phosphate removal in sponge iron biofilter.}, author={Jianmin Li and Wei …
Pig Iron vs. Sponge Iron
Pig iron and sponge iron are both intermediate products in the iron and steel manufacturing process, ... This vs. That Explore Comparisons. vs. ... and impurities such as sulfur and phosphorus. It is brittle and cannot be used directly in most applications. On the other hand, sponge iron, also known as direct reduced iron (DRI), is produced by ...
Effects of Recycled Sponge Iron on Phosphorus Recovery …
Phosphorus in water not only degrades water quality but also leads to a waste of resources. In this study, adsorption thermodynamics and kinetics were used to study the effect of sponge iron on phosphorus removal, and a filtration bed was used …
A 3DBER-S-EC process for simultaneous nitrogen and phosphorus removal
We recently introduced a 3D-BER filled with the mixture of sponge iron and activated carbon for simultaneous nitrogen and phosphorus removal (Wang et al., 2014). Unfortunately, its denitrification efficiency was not improved as compared to the 3DBER-SAD process that can effectively deal with wastewater with low C/N ratio ( Hao …