A novel efficient bioflocculant QZ-7 for the removal of heavy metals from industrial wastewater

Tawila, Zayed M. M. Abu; Ismail, Salmah; Amr, Salem S. Abu; El-Khair, E. K. Abou

doi:10.1039/c9ra04683f

Cited by 28 publications

(7 citation statements)

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“…4,5 Therefore, it is signicant to completely remove HMIs from water. However, HMIs usually coexist with huge amounts of alkali or alkaline-earth metal salts and high-concentration H + in the effluents from mining, electroplating, and battery manufacturing industries, 6,7 resulting in ineffective removal by traditional technologies such as coagulation, ion exchange, and so on. [8][9][10] Recently, biomass-derived adsorbents, such as lignin, cellulose, chitosan, biochar, and so on, have shown promising potential in environmental domains mainly because of their low cost and biodegradability.…”

Section: Introductionmentioning

confidence: 99%

Highly efficient removal of Cu(ii) by novel dendritic polyamine–pyridine-grafted chitosan beads from complicated salty and acidic wastewaters

Wang

Ling

et al. 2020

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Highly efficient removal of Cu(ii) by novel dendritic polyamine–pyridine-grafted chitosan beads from complicated salty and acidic wastewaters

Wang

Ling

et al. 2020

RSC Adv.

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“…Acid mine wastewater has become the leading environmental issue of the mining industry over the years, many methods, containing alkaline chemical neutralization, precipitation, adsorption, and membrane technology have been widely used in treatment of acid mine wastewater. However, though the utilization of biolflocculant is thought as an economic and effective strategy to treat the mining wastewater, such as clarification of turbid aqueous solutions (Liu et al, 2019), removal of organics (Maliehe et al, 2019) and metal remediation (Ayangbenro et al, 2019), probably because the flocculating activities of many reported bioflocculants have been significantly inhibited in high acidic conditions or in the presence of iron or aluminum (Tawila et al, 2019;Pu et al, 2020;Rajivgandhi et al, 2021), the application of bioflocculant in acid mine wastewater treatment is still need to be explored.…”

Section: Introductionmentioning

confidence: 99%

A bioflocculant from Corynebacterium glutamicum and its application in acid mine wastewater treatment

Liu

Zeng²,

Yang³

et al. 2023

Front. Bioeng. Biotechnol.

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Although many microorganisms have been found to produce bioflocculants, and bioflocculants have been considered as attractive alternatives to chemical flocculants in wastewater treatment, there are few reports on bioflocculants from the safe strain C. glutamicum, and the application of bioflocculants in acid wastewater treatment is also rare attributed to the high content of metal ions and high acidity of the water. In this study, a novel bioflocculant produced by Corynebacterium glutamicum Cg1-P30 was investigated. An optimal production of this bioflocculant with a yield of 0.52 g/L was achieved by Box–Behnken design, using 12.20 g/L glucose, 4.00 g/L corn steep liquor and 3.60 g/L urea as carbon and nitrogen source. The structural characterization revealed that the bioflocculant was mainly composed of 37.50% neutral sugar, 10.03% uronic acid, 6.32% aminosugar and 16.51% protein. Carboxyl, amine and hydroxyl groups were the functional groups in flocculation. The biofocculant was thermally stable and dependent on metal ions and acidic pH, showing a good flocculating activity of 91.92% at the dosage of 25 mg/L by aid of 1.0 mM Fe3+ at pH 2.0. Due to these unique properties, the bioflocculant could efficiently remove metal ions such as Fe, Al, Zn, and Pb from the real acid mine wastewater sample without pH adjustment, and meanwhile made the acid mine wastewater solution become clear with an increased neutral pH. These findings suggested the great potential application of the non-toxic bioflocculant from C. glutamicum Cg1-P30 in acid mine wastewater treatment.

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“…The conventional methods accomplishing chemical precipitation (Azimi et al., 2017; Fu & Wang, 2011), coagulation/flocculation (Abu Tawila et al., 2019; Verma et al., 2012), membrane filtration (Zhu et al., 2014), ultrafiltration (Huang et al., 2010), reverse osmosis (Kanamarlapudi et al., 2018; Ranitha et al., 2016), ion exchange (Thakare & Jana, 2015; Zewail & Yousef, 2015) etc. for heavy metal ions removal from wastewater have several drawbacks expensive, energy requirements, generation of toxic sludge, and inconvenient for treating low metal‐containing (<100 mg L −1 ) industrial effluents (Bethke et al., 2018; Tavker et al., 2021; Zamora‐Ledezma et al., 2021).…”

Section: Introductionmentioning

confidence: 99%

Optimization of the removal of chromium and lead by Penicillium chrysogenum using 2k factorial experiments

Malkoç

Yazıcı

Gürsel

et al. 2022

Environmental Quality Mgmt

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This study aims to prepare a low-cost, environmentally friendly, and alternative, biosorbent to remove chromium Cr (III) and lead Pb (II) from polluted water and to find out the highest removal efficiencies using 2 k factorial experiments. The Cr (III) and Pb (II) tolerant fungal strain identified as Penicillium chrysogenum was isolated from ceramic industrial sludge. The impact of process variables on biosorption of Cr (III) and Pb (II) by P. chrysogenum was first evaluated with the Taguchi screening design. Factors and levels were determined to optimize Cr (III) and Pb (II) removal efficiency. According to this, five factors; initial concentration, pH, biosorbent dose, temperature, and inactivation methods were determined for both metals, each factor defined as a fixed factor with two levels. Optimization of the parameters affecting the removal process was determined by the Taguchi method and the signal-to-noise (S/N) ratios are calculated. The maximum removal efficiency (99.92%) was observed at pH 7, biosorbent 1 mg L -1 , inactivation with autoclaving, and at 20 • C with an initial metal concentration of 50 mg L -1 Cr (III). On the other hand, the maximum removal efficiency (98.99%) was observed at pH 4, biosorbent 5 mg L -1 , inactivation with autoclaving, and at 20 • C with an initial metal concentration of 50 mg L -1 Pb (II). Furthermore, metal ions removal by P. chrysogenum was also confirmed by scanning electron microscopy (SEM) combined with an energy dispersive X-ray spectrometer (EDS). The presence of functional groups on fungal cells of metal binding was investigated by Fourier transform infrared (FT-IR).

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A novel efficient bioflocculant QZ-7 for the removal of heavy metals from industrial wastewater

Abstract: In this study, a novel bioflocculant was produced using Bacillus salmalaya 139SI for industrial waste water treatment.

Cited by 28 publications

References 50 publications

Highly efficient removal of Cu(ii) by novel dendritic polyamine–pyridine-grafted chitosan beads from complicated salty and acidic wastewaters

Highly efficient removal of Cu(ii) by novel dendritic polyamine–pyridine-grafted chitosan beads from complicated salty and acidic wastewaters

A bioflocculant from Corynebacterium glutamicum and its application in acid mine wastewater treatment

Optimization of the removal of chromium and lead by Penicillium chrysogenum using 2k factorial experiments

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