Potential Application of Yellow Gypsum From LD Slag as a Soil Conditioner

Ashrit, Shrenivas; Chatti, Ravikrishna V.; Sarkar, S.; Venugopal, R.; Udayabhanu, G.

doi:10.18520/cs/v118/i1/118-122

Cited by 10 publications

(10 citation statements)

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“…Results on pH of post-harvest soil demonstrated that YG application had a higher impact on soil pH than NG. This finding is not surprising, since YG is a synthetic material produced from steel industry slag which have high lime potential (87.48% CaCO 3 ) 44 . A similar observation was noticed by previous studies with the application of slag material to wheat and rice crop at the rate of 10 Mg ha −1 and recorded significantly higher pH in the post-harvest soil 45 , 46 .…”

Section: Discussionmentioning

confidence: 88%

“…Increasing levels of YG significantly increased the micronutrient availability in post-harvest soils of all three locations. This effect was expected because the gypsum source (YG) used in these experiments contains micronutrient elements 44 . The significant difference among gypsum sources was mainly due to their varied elemental composition.…”

Section: Discussionmentioning

confidence: 98%

“…Positive and significant correlation between uptake of Fe, Mn and Cu by groundnut and their availability in the soil could be attributed to increased availability of these nutrients in soils with applied YG thereby increasing their uptake by groundnut. The significant difference among gypsum sources mainly attributed to their varied chemical composition, where YG contains a higher percentage of micronutrients than NG, especially Fe (5.41%) and Zn (0.37%) 44 . Studies with slag application as Fe, Mn and Cu to maize crop reported higher uptake these nutrients 51 , 54 .…”

Section: Discussionmentioning

confidence: 99%

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Influence of yellow gypsum on nutrient uptake and yield of groundnut in different acid soils of Southern India

Laxmanarayanan

Dhumgond

Shruthi

et al. 2022

Sci Rep

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Yellow gypsum (YG), a synthetic product from Linz-Donawitz slag containing high iron (Fe) (5.41%), zinc (Zn) (0.37%) and silicon (Si) (3.41%) can be used as a source of these nutrients along with calcium (Ca) and sulphur (S) for groundnut production. Three field experiments were conducted to know the effect of different rates (500 and 625 kg YG ha−1) and time of application (basal alone and basal + split) of YG on growth, yield and economic returns of groundnut, and micronutrient and Si availability and their uptake in comparison with basal application of 500 kg natural gypsum (NG) ha−1. Basal alone and basal + split application of YG significantly increased the growth, yield and economic returns of groundnut. Further, it increased the soil pH, availability of micronutrients, Si and their uptake by haulm and kernel of groundnut over NG. Irrespective of the location, YG application recorded higher plant available nutrient (PAN) coefficient of micronutrients, while NG application recorded higher PAN recovery coefficient of Si. Basal + split application of YG resulted in better growth and yield of groundnut than basal application of YG. In conclusion, YG can be a potential alternative for NG as a source of Fe, Zn and Si along with Ca and S for groundnut production.

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Section: Discussionmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of yellow gypsum on nutrient uptake and yield of groundnut in different acid soils of Southern India

Laxmanarayanan

Dhumgond

Shruthi

et al. 2022

Sci Rep

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“…The non-metallic fine size fractions are used for making the chemical compound economically namely yellow gypsum (yellow calcium sulphate) like the red gypsum as mentioned earlier [39]. Yellow gypsum produced and characterized from the BOF Slag fines by Ashrit et al [40] using + 0.25 mm fine slag. Yellow gypsum contains all the ingredients like Ca, S, Fe, Si, P and Mg which are good plant nutrients.…”

Section: Use Of Steel Slag In Fertilizer Industriesmentioning

confidence: 99%

“…Gypsum applications in the agriculture field as a soil conditioner is already known and well established. The process of making yellow gypsum from BOF Slag fines was studied in detail by Ashrit et al [40] including the optimization of process parameters and cost calculations [41].…”

Section: Use Of Steel Slag In Fertilizer Industriesmentioning

confidence: 99%

Nonmetallic LD slag fines – opportunities by invoking chemistry

Ashrit

Sarkar

Chatti

et al. 2019

Ironmaking & Steelmaking

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Linz-Donawitz (LD) or BOF (Basic Oxygen Furnace) Slag produced in the LD Process during steelmaking is one of the major threats to the steel producers worldwide. In general, BOF Slag undergoes physical separation to takeout the metallic portion and remaining non-metallic slag fine is dumped in open yard. This practice is becoming difficult in the present scenario due to the higher land cost and unavailability of land. Owing to the stability issue of steelmaking slag it's utilization in road making is very limited and only around 10% of production can be utilized in cement making due to high iron content. It is also used in the sinter making to recover iron value however, all these processes are not generating enough opportunities to utilize the entirety BOF slag generated from steel industries. The present article highlights the various conventional and non-conventional methods, till date, of utilization and value addition of BOF slag.

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