Chemical activation of phosphogypsum exhibits enhanced adsorption of malachite green from aqueous solution due to porosity refinement

被引:0
|
作者
Panda, Anurag [1 ]
Upadhyaya, Anuradha [1 ]
Kumar, Ramesh [2 ]
Acooli, Argha [1 ]
Banerjee, Shirsendu [1 ,3 ]
Mishra, Amrita [3 ]
Khan, Moonis Ali [4 ]
Chowdhury, Somnath [5 ]
Jeon, Byong-Hun [2 ]
Chakrabortty, Sankha [1 ,3 ]
Tripathy, Suraj K. [1 ,3 ]
机构
[1] Kalinga Inst Ind Technol, Sch Chem Technol, Bhubaneswar 751024, India
[2] Hanyang Univ, Dept Earth Resources & Environm Engn, Seoul 04763, South Korea
[3] Kalinga Inst Ind Technol, Sch Biotechnol, Bhubaneswar 751024, India
[4] King Saud Univ, Coll Sci, Dept Chem, Riyadh 11451, Saudi Arabia
[5] Natl Inst Technol, Dept Chem Engn, Durgapur 713209, W Bengal, India
基金
新加坡国家研究基金会;
关键词
malachite green; operating conditions optimization; phosphogypsum; sorption; water treatment; WASTE; DYE; GYPSUM; REDUCTION; KINETICS; REMOVAL; CARBON;
D O I
10.1007/s11705-024-2475-4
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Owing to its uncomplicated synthetic methodology and exorbitant market demand, malachite green is widely used in numerous industries, particularly as a fungicide in aquaculture. Considering its intrinsic toxicity and potential long-term health impacts, deployable and cost-effective strategies must be developed for eliminating water-soluble malachite green. In this study, chemically activated phosphogypsum, a byproduct of fertilizer production, was used to remove malachite green from an aqueous system. Due to its low cost and abundance, the use of phosphogypsum as a sorbent material may significantly reduce the cost of adsorption-based processes. Moreover, its structural durability allows efficient recycling without significant deformation during reactivation. However, untreated phosphogypsum exhibits minimal efficiency in adsorbing synthetic dyes due to its unfavorable surface chemistry. Our investigation revealed that Zn activation induced a noticeable increase in pore volume from 0.03 to 0.06 cm3<middle dot>g-1. A 60 mg<middle dot>L-1 sorbent dose, pH 7, 150 r<middle dot>min-1, and operational temperature of 30 degrees C produced 99% quantitative sorption efficiency. Response surface methodology and artificial neural network were used to optimize process parameters by validating experimental values. No detectable toxicity was observed in Escherichia coli when exposed to the treated water.
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页数:21
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