Variables affecting melanoidins removal from molasses wastewater by coagulation/flocculation

Liang, Zhen; Wang, Yanxin; Zhou, Yu; Liu, Hui; Wu, Zhenbin

doi:10.1016/j.seppur.2009.06.011

Cited by 72 publications

(29 citation statements)

References 42 publications

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“…On the contrary, the removal efficiency decreased in acidic pH. Similar findings have been previously reported by Liang et al [30], Zhou et al [32] and Liang et al [31]. At the acidic range of pH, excessive absorption of H+ and highly charged particles lead to breakup of the electrical interaction of colloids.…”

Section: Effect Of Initial Phsupporting

confidence: 87%

“…The main problems in the treatment of baker's yeast wastewater are color, odor and high concentration of COD in the effluent. In recent years, due to the high concentration of pollutants in the effluent of this industry, a wide variety of stand-alone processes including biological such as aerobic and anaerobic treatments, physicochemical including chemical coagulation, adsorption and membrane separation processes and electrochemical procedures like electrocoagulation technology [26][27][28][29][30][31][32][33][34][35] have been reported for the treatment of baker's yeast wastewater. The results of the relevant studies show that the pigments (melanoidin) in molasses wastewater are refractory to bio-degradation.…”

Section: Introductionmentioning

confidence: 99%

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Integrated Ultrafiltration Membranes and Chemical Coagulation for Treatment of Baker’s Yeast Wastewater

H¹,

Sadeghi²,

Rajaeieh³

et al. 2017

J Membr Sci Technol

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An integrated system ultrafiltration membrane-coagulation has been employed for removal of chemical oxygen demand (COD) and turbidity from baker's yeast effluents. Fouling in the membrane is a common problem; chemical coagulation has been used as a pre-treatment method to mitigate fouling. Poly aluminum chloride (PACl), aluminum sulfate and lime had been used as coagulants. The results indicated that PACl exhibited higher removal efficiency than other coagulants. Two-stage coagulation and combination of coagulants were also investigated. The removal efficiency of COD and turbidity were achieved 68% and 81% by two-stage coagulation by PACl-lime, respectively. The effects of operating conditions on the ultrafiltration process for two types of hollow fiber membranes polyvinylidene fluoride (PVDF) and polypropylene (PP) on permeate flow rate, turbidity and COD removal of wastewater were further investigated. The results showed that by increasing the feed pressure, flow rate and feed temperature the permeate flow rate increased and the removal efficiency decreased. Under optimum conditions, PVDF membrane showed higher performance but compromised the flux compared to PP membrane.

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Section: Effect Of Initial Phsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Integrated Ultrafiltration Membranes and Chemical Coagulation for Treatment of Baker’s Yeast Wastewater

H¹,

Sadeghi²,

Rajaeieh³

et al. 2017

J Membr Sci Technol

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“…Wastewater contains molasses is specified by dark brown colour and high organic loading due to the presence of melanoidins. Melanoidins are resistant to biological treatment [5]. So that, adequate treatment is imperative before discharging of molasses wastewater.…”

Section: Introductionmentioning

confidence: 99%

“…Among them are ozonation [6][7][8], fenton oxidation [4,5,[9][10][11], electrocoagulation [2][3][4][5][6][7][8][9][10][11][12], ultraviolet oxidation [13,14], adsorption [15,16] and ultrasonic irradiation [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

“…So alternative treatment methods must be studied. In literature, treatment of baker's yeast effluent have been studied by using different methods such as coagulation [9][10][11], Fenton oxidation [4], electrocoagulation [2][3][4][5][6][7][8][9][10][11][12]. However, no study on ultrasonic treatment of baker's yeast effluent has been previously reported.…”

Section: Introductionmentioning

confidence: 99%

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Maya endüstrisi atıksuyunun ultrasonik arıtılmasında işletme parametrelerinin etkisi

Ildırar

Fındık

2016

SAUFenBilDer

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In this study, ultrasound was employed to remove color and chemical oxygen demand (COD) from baker's yeast effluent. An ultrasonic homogenizator with 20kHz frequency was used for this purpose. The effect of operational parameters such as ultrasonic power, pulsed cycle, volume of wastewater and dilution ratio (wastewater volume/distilled water volume) was investigated. It was observed that decolorization increased with increasing ultrasonic power and with decreasing wastewater volume. The results show that there was no significant effect of pulsed cycle and an optimum dilution ratio was ¼ on decolorization of baker's yeast effluent. There was no change on COD value at the studied conditions. Keywords: baker's yeast effluent, chemical oxygen demand, decolorization, ultrasoundMaya endüstrisi atıksuyunun ultrasonik arıtılmasında işletme parametrelerinin etkisi ÖZ Bu çalışmada, maya endüstrisi atıksuyunun renk ve kimyasal oksijen ihtiyacı (KOİ) giderimi için ultrases kullanılmıştır. Bu amaçla 20kHz frekansta ultrasonik homojenizatör kullanılmıştır. Ultrasonik güç, vuruş döngüsü, atıksu hacmi, seyreltme oranı (atıksu hacmi/distile su hacmi) gibi parametreler incelenmiştir. Renk gideriminin ultrasonik güç artarken ve atıksu hacmi azalırken arttığı gözlenmiştir. Sonuçlar maya endüstrisi atıksuyunun renk gideriminde vuruş döngüsünün önemli etkisinin olmadığını göstermiştir. Renk gideriminde optimum seyreltme oranı ¼'dür. Çalışılan koşullarda KOİ değerlerinde değişiklik olmamıştır.

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Combined ozone pretreatment and biological processes for removal of colored and biorefractory compounds in wastewater from molasses fermentation industries

Battimelli

Loisel

García-Bernet

et al. 2010

J of Chemical Tech & Biotech

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BACKGROUND: The use of ozone combined with biological treatment was investigated for molasses fermentation wastewater containing highly concentrated, brown and biorefractory compounds. These persistent compounds, known as melanoidins, generate disposal issues: in the environment, the color is problematic for aquatic life; and in municipal wastewater treatment plants, the molecules are biorefractory.

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Variables affecting melanoidins removal from molasses wastewater by coagulation/flocculation

Cited by 72 publications

References 42 publications

Integrated Ultrafiltration Membranes and Chemical Coagulation for Treatment of Baker’s Yeast Wastewater

Integrated Ultrafiltration Membranes and Chemical Coagulation for Treatment of Baker’s Yeast Wastewater

Maya endüstrisi atıksuyunun ultrasonik arıtılmasında işletme parametrelerinin etkisi

Combined ozone pretreatment and biological processes for removal of colored and biorefractory compounds in wastewater from molasses fermentation industries

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