Araştırma Makalesi
BibTex RIS Kaynak Göster

Effect of Slurry Aeration on Coagulation: An Application of Irregular Factorial Design Analysis

Yıl 2018, Cilt: 7 Sayı: 2, 445 - 453, 28.12.2018
https://doi.org/10.17798/bitlisfen.428215

Öz

The effect of the aeration on the coagulation of a bentonite suspension was tested in this study. The experimental
runs for this coagulation work was formed with the help of the irregular factorial design. Based on this irregular
fractional design, a statistical model (R2 = 92.65%; p-value<0.05) was computed to interpret the main effects and
interactions of the independent parameters: pH, aeration, and the Al-coagulant. The suspension pH was determined
as the most effective parameter in this system since the degree of the hydrolyses of aluminium directly varies as a
function of pH. Therefore, the increase in the suspension pH resulted in the higher sediment volumes whereas the
minimum sediment volume was obtained at pH 5. Furthermore, the interaction effect of the product: pHxaeration
in the statistical model was very critical for the performance of the process. Especially, at acidic pH levels, the
aeration adversely affected the sediment formation after the coagulation. 3-D response surfaces of the estimated
model also showed that the maximum amount of the Al-coagulant should be added at pH 5 and no aeration should
be applied for the minimization of the sediment volume. 

Kaynakça

  • Bian, Z., Miao, X., Lei, S., Chen, S. E., Wang, W., & Struthers, S. (2012). The challenges of reusing mining and mineral-processing wastes. Science, 337(6095), 702-703.
  • Ahmad, A. L., Sumathi, S., & Hameed, B. H. (2006). Coagulation of residue oil and suspended solid in palm oil mill effluent by chitosan, alum and PAC. Chemical Engineering Journal, 118(1-2), 99-105.
  • Dentel, S. K. (1988). Application of the precipitation-charge neutralization model of coagulation. Environmental science & technology, 22(7), 825-832.
  • Chang, F. R. C., & Sposito, G. (1996). The electrical double layer of a disk-shaped clay mineral particle: Effects of electrolyte properties and surface charge density. Journal of Colloid and Interface Science, 178(2), 555-564.
  • Wang, J. P., Chen, Y. Z., Yuan, S. J., Sheng, G. P., & Yu, H. Q. (2009). Synthesis and characterization of a novel cationic chitosan-based flocculant with a high water-solubility for pulp mill wastewater treatment. Water research, 43(20), 5267-5275.
  • Ching, H. W., Elimelech, M., & Hering, J. G. (1994). Dynamics of coagulation of clay particles with aluminum sulfate. Journal of Environmental Engineering, 120(1), 169-189.
  • P. Choksuchart, M. Héran and A. Grasmick, Ultra-filtration enhanced by coagulation in an immersed membrane system, Desalination, 145 (2002) 265–272.
  • Konieczny, K., Sąkol, D., & Bodzek, M. (2006). Efficiency of the hybrid coagulation–ultrafiltration water treatment process with the use of immersed hollow-fiber membranes. Desalination, 198(1-3), 102-110.
  • Knight, T. E. (1982). Optimization of the coagulation process at the Carvins Cove Water Treatment Plant (Doctoral dissertation, Virginia Polytechnic Institute and State University).
  • Lin, L., Li, R. H., & Li, X. Y. (2018). Recovery of organic resources from sewage sludge of Al-enhanced primary sedimentation by alkali pretreatment and acidogenic fermentation. Journal of Cleaner Production, 172, 3334-3341.
  • Zhang, J., Wu, X., Qiu, D., Mao, J., & Zhang, H. (2017). Pilot-scale in situ treatment of landfill leachate using combined coagulation–flocculation, hydrolysis acidification, SBR and electro-Fenton oxidation. Environmental technology, 1-10.
  • Jin, X., Jin, P., Hou, R., Yang, L., & Wang, X. C. (2017). Enhanced WWTP effluent organic matter removal in hybrid ozonation-coagulation (HOC) process catalyzed by Al-based coagulant. Journal of hazardous materials, 327, 216-224.
  • Silva, T. F., Vieira, E., Lopes, A. R., Nunes, O. C., Fonseca, A., Saraiva, I., ... & Vilar, V. J. (2017). How the performance of a biological pre-oxidation step can affect a downstream photo-Fenton process on the remediation of mature landfill leachates: Assessment of kinetic parameters and characterization of the bacterial communities. Separation and Purification Technology, 175, 274-286.
  • Malik, S. R., Awan, B. A., Khan, W. A., Islam, Z. U., Mukhtar, A., & Shafiq, U. (2017). Coagulation Flocculation Based Biological Treatment of Tannery Industry Wastewater using Potash Alum and Drewfloc. European Journal of Advances in Engineering and Technology, 4(1), 71-75.
  • Oloibiri, V., Chys, M., De Wandel, S., Demeestere, K., & Van Hulle, S. W. (2017). Removal of organic matter and ammonium from landfill leachate through different scenarios: Operational cost evaluation in a full-scale case study of a Flemish landfill. Journal of environmental management, 203, 774-781.
  • Majumdar, S., Sarkar, S., Ghosh, S., Bhattacharya, P., Bandyopadhyay, S., Saha, A., ... & Roy, S. N. (2018). New Trends for Wastewater Treatment and Their Reuse Using Ceramic Membrane Technology: A Case Study. In Water Quality Management (pp. 339-348). Springer, Singapore.
  • King, R. P. (2002). Introduction to practical fluid flow. Elsevier.
  • King, R. P. (2012). Modeling and simulation of mineral processing systems. Elsevier.

Süspansiyon İçerisindeki Hava Kabarcıklarının Koagülasyon Performansı Üzerindeki Etkisi: Faktöriyal Dizayn Analizi Uygulaması

Yıl 2018, Cilt: 7 Sayı: 2, 445 - 453, 28.12.2018
https://doi.org/10.17798/bitlisfen.428215

Öz

Bu çalışmada, bentonite süspansiyonunun koagülasyonu esnasında sisteme verilen hava kabarcıklarının
fizikokimyasal süreç üzerindeki etkileri incelenmiştir. Koagülasyon çalışması için gerekli deney seti, istatistiksel
bir teknik olan fraksiyonel dizayn yöntemi ile oluşturulmuştur. Bu yöntem ile elde edilen istatistiksel model (R2
= 92.65%; p-value<0.05) parametrelerin (pH, havalandırma ve Al-koagülant) sistem üzerindeki temel etkilerinin
ve etklileşimlerinin belirlenmesinde ve yorumlanmasında kullanılmıştır. Sonuç olarak, alüminyum iyonlarının
hidrolizinin temel olarak pH faktörü ile değişmesi sebebi ile süspansiyon pH’ının performans açısından en etkili
bağımsız değişken olduğu görülmüştür. pH seviyesinin yükseltilmesi daha fazla çamur hacminin oluşmasına sebep
olurken en düşük çökelen katı hacmi pH 5 değerinde elde edilmiştir. Ek olarak, istatistiksel eşitlikteki pHxhava
etkileşiminin sistem performansı açısından kritik öneme sahip olduğu gözlemlenmiştir. Özellikle asidik pH
seviyelerinde hava kabarcıkları koagülasyon performansını olumsuz etkilemiştir. İstatistiksel modele ait 3-Boyutlu
etki yüzeyleri incelendiğinde ise koagülasyon sonrası elde edilen çamur hacminin minimize edilebilmesi için
maksimum Al-koagülantı pH 5 seviyelerinde eklenmesi gerekliliği tespit edilmiştir. Süspansiyon içerisindeki hava
kabarcıklarının ise flok oluşumunu engellediği ve optimum koagülasyon performansı için uygun bir parameter
olmadığı sonucuna varılmıştır. 

Kaynakça

  • Bian, Z., Miao, X., Lei, S., Chen, S. E., Wang, W., & Struthers, S. (2012). The challenges of reusing mining and mineral-processing wastes. Science, 337(6095), 702-703.
  • Ahmad, A. L., Sumathi, S., & Hameed, B. H. (2006). Coagulation of residue oil and suspended solid in palm oil mill effluent by chitosan, alum and PAC. Chemical Engineering Journal, 118(1-2), 99-105.
  • Dentel, S. K. (1988). Application of the precipitation-charge neutralization model of coagulation. Environmental science & technology, 22(7), 825-832.
  • Chang, F. R. C., & Sposito, G. (1996). The electrical double layer of a disk-shaped clay mineral particle: Effects of electrolyte properties and surface charge density. Journal of Colloid and Interface Science, 178(2), 555-564.
  • Wang, J. P., Chen, Y. Z., Yuan, S. J., Sheng, G. P., & Yu, H. Q. (2009). Synthesis and characterization of a novel cationic chitosan-based flocculant with a high water-solubility for pulp mill wastewater treatment. Water research, 43(20), 5267-5275.
  • Ching, H. W., Elimelech, M., & Hering, J. G. (1994). Dynamics of coagulation of clay particles with aluminum sulfate. Journal of Environmental Engineering, 120(1), 169-189.
  • P. Choksuchart, M. Héran and A. Grasmick, Ultra-filtration enhanced by coagulation in an immersed membrane system, Desalination, 145 (2002) 265–272.
  • Konieczny, K., Sąkol, D., & Bodzek, M. (2006). Efficiency of the hybrid coagulation–ultrafiltration water treatment process with the use of immersed hollow-fiber membranes. Desalination, 198(1-3), 102-110.
  • Knight, T. E. (1982). Optimization of the coagulation process at the Carvins Cove Water Treatment Plant (Doctoral dissertation, Virginia Polytechnic Institute and State University).
  • Lin, L., Li, R. H., & Li, X. Y. (2018). Recovery of organic resources from sewage sludge of Al-enhanced primary sedimentation by alkali pretreatment and acidogenic fermentation. Journal of Cleaner Production, 172, 3334-3341.
  • Zhang, J., Wu, X., Qiu, D., Mao, J., & Zhang, H. (2017). Pilot-scale in situ treatment of landfill leachate using combined coagulation–flocculation, hydrolysis acidification, SBR and electro-Fenton oxidation. Environmental technology, 1-10.
  • Jin, X., Jin, P., Hou, R., Yang, L., & Wang, X. C. (2017). Enhanced WWTP effluent organic matter removal in hybrid ozonation-coagulation (HOC) process catalyzed by Al-based coagulant. Journal of hazardous materials, 327, 216-224.
  • Silva, T. F., Vieira, E., Lopes, A. R., Nunes, O. C., Fonseca, A., Saraiva, I., ... & Vilar, V. J. (2017). How the performance of a biological pre-oxidation step can affect a downstream photo-Fenton process on the remediation of mature landfill leachates: Assessment of kinetic parameters and characterization of the bacterial communities. Separation and Purification Technology, 175, 274-286.
  • Malik, S. R., Awan, B. A., Khan, W. A., Islam, Z. U., Mukhtar, A., & Shafiq, U. (2017). Coagulation Flocculation Based Biological Treatment of Tannery Industry Wastewater using Potash Alum and Drewfloc. European Journal of Advances in Engineering and Technology, 4(1), 71-75.
  • Oloibiri, V., Chys, M., De Wandel, S., Demeestere, K., & Van Hulle, S. W. (2017). Removal of organic matter and ammonium from landfill leachate through different scenarios: Operational cost evaluation in a full-scale case study of a Flemish landfill. Journal of environmental management, 203, 774-781.
  • Majumdar, S., Sarkar, S., Ghosh, S., Bhattacharya, P., Bandyopadhyay, S., Saha, A., ... & Roy, S. N. (2018). New Trends for Wastewater Treatment and Their Reuse Using Ceramic Membrane Technology: A Case Study. In Water Quality Management (pp. 339-348). Springer, Singapore.
  • King, R. P. (2002). Introduction to practical fluid flow. Elsevier.
  • King, R. P. (2012). Modeling and simulation of mineral processing systems. Elsevier.
Toplam 18 adet kaynakça vardır.

Ayrıntılar

Birincil Dil İngilizce
Bölüm Araştırma Makalesi
Yazarlar

Mustafa Çırak

Yayımlanma Tarihi 28 Aralık 2018
Gönderilme Tarihi 29 Mayıs 2018
Kabul Tarihi 24 Aralık 2018
Yayımlandığı Sayı Yıl 2018 Cilt: 7 Sayı: 2

Kaynak Göster

IEEE M. Çırak, “Effect of Slurry Aeration on Coagulation: An Application of Irregular Factorial Design Analysis”, Bitlis Eren Üniversitesi Fen Bilimleri Dergisi, c. 7, sy. 2, ss. 445–453, 2018, doi: 10.17798/bitlisfen.428215.



Bitlis Eren Üniversitesi
Fen Bilimleri Dergisi Editörlüğü

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