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·In situ immobilization of heavy metals in contaminated soils using industrial by products is an attractive remediation technique In this work titanium gypsum TG was applied at two levels TG L
·Titanium gypsum and biochar are considered effective amendments for mitigating soil salinity stress However the knowledge is inadequate regarding their efficiency and application as an improvement In this study TG B composite was prepared by using industrial by products titanium gypsum and biochar as raw materials and then modified by ball
DOI / Corpus ID 115146737; CO2 sequestration through direct aqueous mineral carbonation of red gypsum article{Azdarpour2017CO2ST title={CO2 sequestration through direct aqueous mineral carbonation of red gypsum} author={Amin Azdarpour and Mohammad Mahdi Afkhami Karaei and Hossein Hamidi and Erfan
·Utilization and disposal of titanium gypsum TiG have led to growing public concern In this study we proposed a novel scheme that could transform TiG to efficient adsorbents for phosphate P
·CO 2 sequestration using red gypsum via pH swing process Effect of carbonation temperature and NH 4 HCO 3 on the process efficiency Author links open overlay panel Amin Azdarpour a Titanium gypsum is a solid waste produced by sulphuric acid titanium dioxide producers when they neutralise the waste acid with calcium method and the annual
·The α hemihydrate titanium gypsum was prepared from titanium gypsum through atmospheric hydrothermal method XRD test was used to analysis the phase composition of the products TGA test was used
PH value of titanium gypsum was by pH test following the Test Methods of Soils for Highway Engineering JTG 3430 2020 The chemical composition of TG was determined by X ray fluorescence
The PH value of titanium gypsum was by pH test following the Test Methods of Soils for Highway Engineering JTG 3430 2020 The chemical composition of TG was determined by X ray fluorescence
·Titanium gypsum it is taken from the storage yard newly built by Shandong Jinhong Titanium White Chemical co LTD in 2017 Its main composition is CaSO 4 ·2H 2 O with a pH value near the neutral and a moisture content of about 20% red and yellow with a pungent smell Pre treatment of titanium gypsum the titanium gypsum
Salinized grassland soils pH and EC dS·m −1 Natural restoration decreased the salinity of grassland soils pH to and soil EC dS·m −1 improved soil fertility and the abundance of bacterial and fungal phyla Acidobacteria increased whereas Ascomycota decreased respectively Bacteria and fungi
·Titanium gypsum TG is an industrial by product from titanium dioxide industry which is mainly composed of crystalline gypsum to improve water flow in agricultural saline alkali soil and replace lime or limestone to adjust pH in alkaline paddy soil Papastefanou et al 2006 TG was successfully applied to the solidification of
·Industrial by product gypsum was mainly composed of CaSO 4 • 2H 2 O [12] which has reached a discharge of 212 million tons a year in China but the comprehensive utilization rate is only 40%
Titanium gypsum and biochar are considered effective amendments for mitigating soil salinity stress However the knowledge is inadequate regarding their efficiency and application as an improvement In this study TG B composite was prepared by using industrial by products titanium gypsum and bioch
·The time for dried sludge doped with 20% quicklime was folds as longer as that with 20% titanium gypsum modified cementitious materials when the pH of dried sludge was near and SEM
·A large amount of industrial gypsum residues are generated as the by products from many industrial processes Among them red gypsum is a type of iron rich gypsum residue derived from the industrial titanium dioxide process using Ilmenite Rosli et al 2020 mainly composed of calcium sulfate and amorphous ferric hydroxide Wu et al 2019 In China more
·In this study the effect of citric acid on iron leaching from titanium gypsum TiG was systematically investigated The conditions for the leaching of valuable metals were optimized while
·In situ immobilization of heavy metals in contaminated soils using industrial by products is an attractive remediation technique In this work titanium gypsum TG was applied at two levels TG L % and TG H % to simultaneously reduce the uptake of cadmium Cd lead Pb and arsenic As in rice grown in heavy metal contaminated paddy soils
the sulfuric acid method Titanium gypsum was passed through 20 mesh sieves and 100 mesh sieves for use sulfate CaSO 4 iron oxide Fe 2 O 3 and crystal water And the ratio of CaSO 4 ·2H 2 O/Fe 2 O 3 in titanium gypsum ranges from to The pH value of the titanium gypsum used in this experiment was the Cd
Weijun fu currently works at the School of Environmental and Resources Sciences Zhejiang A&F University Weijun does research in Remote Sensing Geostatistics and Geoinformatics GIS Their
·Introduction Titanium gypsum TG is a industrial gypsum produced during the manufacture of titanium dioxide TiO 2 by the sulphuric acid process after neutralisation of the acid waste solution with lime or calcium carbide slag Zapata Carbonell et al 2019 Zhai et al 2020 At present every 1 ton of TiO 2 produced in China generates about 6 ton of TG Ma
The high pH and salinity of saline alkali soil not only seriously restrict the growth of crops but also aggravate the pollution of heavy metals Phosphogypsum PG and titanium gypsum TG
·Titanium gypsum TiG generally deemed as the Class I non hazardous industrial solid waste is a kind of industrial by product gypsum generated from titanium oxide TiO 2 production from ilmenite FeTiO 3 ore using the sulfate primary component of TiG is calcium sulfate dihydrate CaSO 4 ·2H 2 O but it also has a significant amount of
