Preparation of an inorganic coagulant-polysilicate–magnesium for dyeing wastewater treatment: Effect of acid medium on the characterization and coagulation performance

Wei, Yanxin; Qiao-zhen, JI; Chen, Lei; Hao, Jianwen; Yao, Chengli; Dong, Xiongzi

doi:10.1016/j.jtice.2017.01.020

Cited by 37 publications

(9 citation statements)

References 36 publications

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“…Coagulation/flocculation is controlled by the charge neutralization mechanism . The anionic dye, containing sulfonic groups, is electrostatically attracted to protonated groups, which neutralizes the anionic charges of RB5, allowing the dye to bind and settle.…”

Section: Resultsmentioning

confidence: 99%

Protein fractionation of Moringa oleifera Lam. seeds and functionalization with magnetic particles for the treatment of reactive black 5 solution

Reck

Baptista²,

Paixão³

et al. 2019

Can J Chem Eng

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Industrial effluents are sewage from industrial processes, such as polluted cooling waters and waters used for cleaning. It is extremely important that these contaminated waters undergo treatment to allow for water reuse or safe disposal, without damage to the environment. In the present work, the efficacy of coagulating/flocculating aqueous solutions containing reactive black 5 (RB5) dye was evaluated using protein fractions derived from Moringa oleifera seeds (albumin and globulin) as natural coagulants functionalized with iron oxide magnetic nanoparticles. The application of a magnetic field during sedimentation allowed for faster settlement of the dye particles and their separation. Variations in parameters such as the protein concentration, nanoparticle concentration, solution pH, dye concentration, and the presence or absence of an alkalizing agent were assessed. Moreover, the sedimentation time was analyzed with and without the magnetic field and with the reuse of iron oxide nanoparticles. The functionalized magnetic coagulants were able to remove more than 90 % of RB5 dye within 5 min of sedimentation. Figure 11. Influence of the presence of an alkalizing agent (concentration of AlbFe (a): 115 mg L À1 ; concentration of GloFe (b): 200 mg L À1 ; pH: 6; and dye concentration: 20 mg L À1 ).

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Section: Resultsmentioning

confidence: 99%

Protein fractionation of Moringa oleifera Lam. seeds and functionalization with magnetic particles for the treatment of reactive black 5 solution

Reck

Baptista²,

Paixão³

et al. 2019

Can J Chem Eng

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“…Moreover, the coagulation performance of PSAS 1.11 is compared against some coagulants reported references in Table S2. † [36][37][38][39] This result clearly shows that as-prepared coagulant has high coagulation performance.…”

Section: 22mentioning

confidence: 70%

“…Suggesting that PSAS 1.11 mainly reacts chemically with this structure, which is consistent with literature reports. 38 …”

Section: Resultsmentioning

confidence: 99%

Characteristics of poly-silicate aluminum sulfate prepared by sol method and its application in Congo red dye wastewater treatment

et al. 2021

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“…Flocculation and coagulation are conventional treatment procedures applied for textile and food industrial wastewater due to their efficiency in removing color and stabilizing chemical compounds (Bongiovani et al., ). However, they produce large amounts of chemically rich and not biodegradable sludge which needs treatment and disposal, increasing operational costs (Wei et al., ).…”

Section: Introductionmentioning

confidence: 99%

Optimized adsorption onto biosolids‐based activated carbon for tartrazine removal from wastewater

Madeira

Zavarize

Vieira

2019

Water Environment Research

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This study investigates optimized tartrazine uptake by activated carbon prepared from biosolids (BBAC). Different tartrazine concentrations (10–20 mg/L), adsorbent dosages (1.0–2.0 g), pH (2.0–4.0), and contact times (60–120 min) were tested. These independent variables formed a 24 full factorial experiment arranged as central composite rotative design (CCRD). Response surface methodology (RSM) analyzed the responses of 50 experimental runs. Tartrazine removal efficiency fluctuated between 76.2% and 99.9%. The experimental data were best fitted by a quadratic model (R2 > 0.95, p > 0.0001). All variables exerted statistically significant (p < 0.05) effects on the tartrazine uptake (initial concentration, p = 0.0011; BBAC dosage, p = 0.0004; pH, p < 0.0001; contact time, p < 0.0001). Optimized tartrazine uptake efficiency of 97.4% can happen when variables mutually correlate at 10.1 mg/L of tartrazine concentration, 1.07 g of adsorbent dosage, 2.13 of pH, and 116.9 min of contact time. Practitioner points Production of biosolids‐based activated carbon (BBAC) is presented. Adsorptive affinity to tartrazine in aqueous solution was experimented. Experimental conditions optimized by Response Surface Methodology.

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Preparation of an inorganic coagulant-polysilicate–magnesium for dyeing wastewater treatment: Effect of acid medium on the characterization and coagulation performance

Cited by 37 publications

References 36 publications

Protein fractionation of Moringa oleifera Lam. seeds and functionalization with magnetic particles for the treatment of reactive black 5 solution

Protein fractionation of Moringa oleifera Lam. seeds and functionalization with magnetic particles for the treatment of reactive black 5 solution

Characteristics of poly-silicate aluminum sulfate prepared by sol method and its application in Congo red dye wastewater treatment

Optimized adsorption onto biosolids‐based activated carbon for tartrazine removal from wastewater

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