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Methods to quantify plant available silicon (Si) from Si-based slags for use as fertilizers are not well defined. Although it is possible to estimate total Si from a potential Si fertilizer source ...
Some authors suggest that application of Si fertilizer to rice fields is an alternative approach to control brown spot, especially in soils where plant-available Si is very low –. Steel slags or iron slags are byproducts of steel or iron industries, which account for 15–20% of total steel production.
To realize the harmless treatment of various wastes and develop alternative fertilizers, fly ash and slags were soaked in waste acid liquid from desulfurization and denitrification to extract N, P ...
As a product of waste steel industries, slags are high in CaO, P2O5, SiO2, MgO, MnO, and Fe oxides, which can be used for fertilizer applications (Wang and Cai 2006;Ning et al. 2016;Das et al. 2020).
This work proposes a method to valorize lead slag for fertilizer purposes. The research concept was to selectively recover valuable microelements (Cu(II), Fe(II), Zn(II) in an amount of at least 0.2% m/v of each) by chemical leaching while retaining toxic elements in the slag (i.e. As and Pb). Among acids, hydroxides, salts and their mixtures tested for slag …
Steel mill services firm Harsco Environmental has been producing and selling AgroSilicio, a low-carbon fertilizer made from steel slag, in Brazil in cooperation with the government of a Brazilian state. Harsco, a division of Philadelphia-based Enviri Corp., has been invited by the Brazilian state of Minas Gerais to make a presentation on the ...
Request PDF | From hazardous waste to fertilizer: Recovery of high-value metals from smelter slags | This work proposes a method to valorize lead slag for fertilizer purposes. The research concept ...
BOFS continuously supplied large amount of iron for Fenton-like oxidation with H 2 O 2. Removal of TPH of diesel and fuel oil by 96% and 76%, respectively. Tsai and Kao (2009) SS: Cd: ... Slags are also used as a material in acid soils. However, some slags contain toxic metals, such as Cr and V, which can cause plant and animal toxicity ...
Like fertilisers, enrichment of the soil mineral nutrient content by steel slag addition reduces the cost-benefit ratio of outsourcing nutrient acquisition to AMF hyphae. Being …
nutrients like phosphorus, potassium, magnesium and calcium are enriched, ... Assessment of Recycled Phosphorus Fertilizers for Organic Farming: Chars, Ashes and Slags Introduction Thermal processing of organic wastes is a treat-ment option to reduce the volume of feedstocks, to obtain energy, and to produce useful by-products
Slags can be used as aggregates for concrete and road pavement, hydraulic construction, cement additives, materials for wastewater or gas treatment, construction materials and as a fertilizer for ...
In this study, a method of preparing fertilizers with the fly ash from biomass power plants and the waste acid solution from flue gas desulfurization and denitrification was disclosed. In addition, the study also explored the effects of added fine particles, unburned biochar, and other commercial fertilizers on soil water retention and slow-release effect of fertilizers. The …
The influence of slag fertilizer on the soil microbiome are diverse and the possible mechanisms of slag-microbes interactions can be as follows: (1) slag fertilizer supplies nutrients not only to the plant but also to soil microorganisms; (2) slag fertilizer modifies soil microbial habitats by improving soil properties (e.g., increasing soil pH ...
Silicon (Si), despite being abundant in nature, is still not considered a necessary element for plants. Si supplementation in plants has been extensively studied over the last two decades, and the role of Si in alleviating biotic and abiotic stress has been well documented. Owing to the noncorrosive nature and sustainability of elemental Si, Si fertilization in …
fertilizer (e.g., silicate fertilizer, lime fertilizer, slag phosphate fertilizer, and iro n matter of special fertilizer), which modify soil properties and soil microbial habi tats.
The researchers tested whether slags could be utilized as fertilizers on a variety of crops, including rice (Ning et al., 2014), corn (Fan et al., 2018), soybeans (Deus et al., 2020), melon (Ferreira Preston et al., 2021), grapes (Zhang et al., 2017) and sunflowers (Agnello et al., 2018). Studies indicate a high potential for such management of ...
Its alkaline property remedies soil acidity (Makelaa et al., 2012). In developed countries such as Germany, USA, France and Japan, converter slag is used to produce siliceous fertilizer, phosphorus fertilizer and micronutrient fertilizer (Wu et al., 2005). Environmental concerns about the slags use in agriculture and for land reclamation ...
These slags are used for silicate fertilizer, lime fertilizer, phosphate fertilizer and special fertilizer in Japan. ... It is well known that de fi ciency of Si causes pathogenic disease like ...
The experimental works were carried out using pulverized LD slag for growing different vegetables and crops like tomato, potato, onion, spinach and wheat in acidic soil (Maslehuddin et al., 2003). Steel slag contains fertilizer components …
Alkalinity (CaO) of slags ranged from 27.35 to 52.43%. Total Si content ranged from 3.51 to 11.45%. A/Si ratio ranged from 1.83 to 6.38. The chemical composition observed in this study was in accordance with previous reporting where, silicate slags were reported to contain SiO 2, CaO and A/Si ranging from 11.3–51.71%, 27.3–63.1% and 0.75–4.48 respectively 19, 27.
It is well documented that slag-based silicon fertilizers have beneficial effects on the growth and disease resistance of rice. However, their effects vary greatly with sources of slag and are closely related to availability …
The influence of slag fertilizer on the soil microbiome are diverse and the possible mechanisms of slag-microbes interactions can be as follows: (1) slag fertilizer supplies nutrients not only to the plant but also to soil microorganisms; (2) slag …
In agriculture, slags can be used as fertilizers and corrective of soil acidity [1]. base [2]. Additionally, steel slags have been used as a low-cost source to. supply Si to rice …
The production of fertilizers based on high quality waste materials is a highly important problem in environmental protection, mainly due to the protection of natural mineral resources. ... Research on the preparations and properties of fertilizer recycling from biomass ash, slags, and waste acid liquid from desulfurization and denitrification ...
Raw iron ore is characterized by the most abundant iron-containing mineral found in the ore: magnetite (Fe 3 O 4), hematite (Fe 2 O 3), siderites (FeCO 3), and limonites (2Fe 2 O 3 ·3H 2 O) (Walker, 1986).All the impurities in iron ore (silica, alumina, titania, sulfur, and phosphorus) are collectively known as gangue.All iron ore that is mined has to be crushed, …
The effective utilization of slag fertilizer in agriculture to neutralize soil acidity, improve crop productivity, mitigate greenhouse gas emissions, and stabilize heavy metals in contaminated...
Secondary metallurgy slag (SMS) complies with the specifications for manufacturing fertilizers, soil improvers and materials, and sanitization of sewage sludges. A batch of SMS is investigated...
Steel slags are categorized as silicate fertilizer, lime fertilizer, phosphate fertilizer, or Fe-added special fertilizer based on their Ca, Si, Mg, P, Mn, and Fe contents (Ito 2015). In studies ...
Some mixtures can promote precipitation, like Ca fertilizers mixed with phosphates. (b) ... 8–12% P), basic slags (or Thomas slags, byproduct of iron and steel industry) (15% P 2 O 5, 7% P), and ground phosphate rock (25–40% P 2 O 5, 11–17% P, from mining without chemical treatment in the industry).
Because the iron and steel slags contain calcium (Ca), magnesium (Mg), phosphorus (P), and silicon (Si), some have tried to use them as Si- and P-fertilizers, for producing Ca-Mg-P fertilizers, or ...
