Phosphogypsum as a novel modifier for distillers grains biochar removal of phosphate from water

Wang, Bing; Lian, Guoqi; Lee, Xinqing; Gao, Bin; Li, Ling; Liu, Taoze; Zhang, Xueyang; Zheng, Yun

doi:10.1016/j.chemosphere.2019.124684

Cited by 116 publications

(41 citation statements)

References 53 publications

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“…Electrostatic attraction refers to the electrostatic force of long-range interaction occurring between the electrostatic adsorption in aqueous solution with differently charged particles or uncharged particles (Wang et al 2020a(Wang et al , 2020b. Adsorption creates regions of positive charge that promote electrostatic attraction with negative regions on other particles.…”

Section: Nitrate and Phosphate Removal Mechanism Electrostatic Attractionmentioning

confidence: 99%

“…This unit, due to its net negative charge, will then form a component of the phosphate crystal structures. The hydrogen bond is not as strong as the ionic and covalent bonds but is stronger than the van der Waals bond (Wang et al 2020a(Wang et al , 2020b. Reported research indicated that there was a possibility of hydrogen bonding of nitrate with hydroxyl groups present inside chains of adsorbent (NO 3 À …OH À ) (Banu & Meenakshi 2017).…”

Section: Hydrogen Bondingmentioning

confidence: 99%

“…Synthesized Ca-BC at the ratio of 2:1 (Ca(OH) 2 to flour) was observed to exhibit a maximum phosphate adsorption capacity of 314.22 mg/g due to the formation of hydroxyapatite (Ca 5 (PO 4 ) 3 (OH)) crystals during adsorption (Wang et al 2018). A novel, adsorbent phosphogypsum biochar (PG-biochar) thermally treated at 600°C was reported to have a phosphate removal capacity of 102.4 mg/g at pH 6 (Wang et al 2020a(Wang et al , 2020b. Moreover, novel calcium hydroxide-coated dairy manure-derived biochar (Ca-MBC) was examined for phosphate removal from water as a low-cost material (Choi et al 2018).…”

Section: Biochar Adsorbentsmentioning

confidence: 99%

See 2 more Smart Citations

A comprehensive review on nitrate and phosphate removal and recovery from aqueous solutions by adsorption

Gizaw

Zewge

Kumar

et al. 2021

Journal of Water Supply: Research and Technology-Aqua

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Nitrogen and phosphorus removal and recovery are considered as one of the interventions to control water bodies' eutrophication by application of various methods. Adsorption is an effective method for phosphate and nitrate removal from wastewater. It is efficient, quick, easy, low-cost and environmentally friendly. Even though different adsorbents have been developed with excellent properties, lack of compilation, lack of consistency in operational conditions, and lack of other important parameters used for direct comparison and practical use selection were observed. The first aim of this review is to provide facts and figures on novel adsorbents used for nitrate, phosphate, and simultaneous nitrate-phosphate removal and recovery. Second, various adsorbents applied for nitrate and phosphate removal have been compared in terms of the number of cycles that the adsorbent used; retained removal capacity (RR); the removal capacity of the adsorbent considering the threshold limit settled by EU and EPA as equilibrium concentration for phosphate (q0.1) and nitrate (q10); and time to reach the equilibrium capacity (t90). Third, based on the afore-mentioned criteria, the best adsorbents is proposed and this is the key novelty of this review work. Moreover, future aspects and challenges regarding nitrate and phosphate removal and recovery are presented.

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Section: Nitrate and Phosphate Removal Mechanism Electrostatic Attractionmentioning

confidence: 99%

Section: Hydrogen Bondingmentioning

confidence: 99%

Section: Biochar Adsorbentsmentioning

confidence: 99%

See 1 more Smart Citation

A comprehensive review on nitrate and phosphate removal and recovery from aqueous solutions by adsorption

Gizaw

Zewge

Kumar

et al. 2021

Journal of Water Supply: Research and Technology-Aqua

View full text Add to dashboard Cite

show abstract

“…Because biochar is usually alkaline, the application of biochar to soil can improve the pH value of soil, thus affecting the mobility and bioavailability of heavy metals. It can adsorb various contaminants through ion exchange, precipitation or surface complexation [19][20][21][22][23][24][25][26][27]. Previous studies have shown that biochar can decrease heavy metals bioavailability in soil and uptake in plants [28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Immobilization of heavy metals (Cd, Zn, and Pb) in different contaminated soils with swine manure biochar

Yang

Wang

Shi

et al. 2021

Environmental Pollutants and Bioavailability

Self Cite

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“…Within this context, phosphogypsum can be classified as a mineral associated with no extraction costs. These factors determine a strong interest among researchers in the challenges of studying phosphogypsum properties and ways of phosphogypsum recycling [4][5][6][7][8][9]. One of the forms of phosphogypsum recycling is its reuse for the production of building materials, i.e.…”

Section: Introductionmentioning

confidence: 99%

Phosphogypsum recycling into inorganic dyes

et al. 2019

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Currently, chemical wastes recycling into valuable secondary products poses a pressing challenge. During phosphoric acid production from apatite raw materials, large-tonnage phosphogypsum wastes are formed, resulting in ecosystem dysfunction. Besides, such wastes occupy significant production areas. Calcium sulfate is the main component of phosphogypsum. The paper addresses the possibility of phosphogypsum reduction to calcium sulfide, which has the capacity for luminescence under UV-light. Charcoal, sucrose, and citric acid were used as reducing agents. The obtained inorganic luminescent dyes were examined using X-ray phase analysis, scanning electron microscopy (SEM), and electron probe microanalysis (EPMA). It was found that, in the presence of charcoal, the process is accompanied by an uneven distribution of calcium sulfide over the volume of the system and, as a consequence, an uneven glow of the sample. The use of citric acid and sucrose as reducing agents results in the synthesis of samples with a uniform glow. The efficiency of the calcium sulfate conversion to calcium sulfide is 51–58%. A mechanism of calcium sulfate reduction is proposed. The obtained results can serve as a basis for the development of a technology for the recycling of large-tonnage phosphoric acid production wastes into cheap and much-needed inorganic luminescent dyes.

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Phosphogypsum as a novel modifier for distillers grains biochar removal of phosphate from water

Cited by 116 publications

References 53 publications

A comprehensive review on nitrate and phosphate removal and recovery from aqueous solutions by adsorption

A comprehensive review on nitrate and phosphate removal and recovery from aqueous solutions by adsorption

Immobilization of heavy metals (Cd, Zn, and Pb) in different contaminated soils with swine manure biochar

Phosphogypsum recycling into inorganic dyes

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