Publications by authors named "Caiqing He"

Tobermorite (TOB) is a synthetic inorganic mineral material with a montmorillonite-like layered structure that removes heavy metals from water, and its incorporation into starch-based hydrogels can optimize the stability and adsorption properties of the hydrogels; it can also significantly reduce the storage pressure of fly ash (FA) and reduce environmental pollution. This study utilized starch/tobemolite/acrylic acid (LR/TOB/AA) as the raw material, successfully synthesizing a starch-tobemolite composite hydrogel (LR-TOB/AA) using aqueous solution polymerization. The hydrogel exhibits excellent water absorption and retention capabilities, as well as a significant adsorption effect on Pb(II).

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Article Synopsis
  • * Experimental evaluations showed that the composite hydrogel made with tobermorite and leftover rice (TOB@LR-CH) significantly improved water absorption (up to 322.64 g/g), water retention (71.80% over 144 hours), and cadmium adsorption (as much as 591.36 mg/g) by optimizing the amount of TOB used.
  • * The TOB2@LR-CH
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Ammonium-nitrogen (NH-N) recovery from high concentration of NH-N-containing wastewater by struvite (MgNHPO·6HO, MAP) precipitation method has been realized, but whether NH-N recovery under different reagent adding sequence of NaOH, solid Mg salt and P salt can generate different effects, remains ambiguous. In view of the problem, four modes to add reagents were investigated in detail on the formation of struvite. The results show that the Mode IV (M-IV, i.

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Excessive ammonia is a common pollutant in the wastewater, which can cause eutrophication, poison aquatic life, reduce water quality and even threaten human health. Ammonia in aqueous solution was converted using various systems, i.e.

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