Floatability of Suspended Particles from Wastewater of Natural Stone Processing by Floc-Flotation in Mechanical Cell

Yıl 2020, Cilt: 7 Sayı: 2, 358 - 370, 31.05.2020

Tuba Taşdemir , Hande Kılıç Başaran

https://doi.org/10.31202/ecjse.644348

Öz

Flocculation and flotation
methods have been applied individually to achieve removal of suspended
particles from wastewater. However, in this study, floc-flotation method where
these two methods are applied together in mechanically agitated cell and the
use of a combinations of different type surfactant and polymer to achieve
floatability of fine particles are investigated. The conventional and floc-flotation
experiments were carried out to determine effect of different parameters such
as collector type and dosage, pH, flotation time, condition time and
polymer/surfactant interactions on floatability of very fine particles.

When the results of floc-flotation
and conventional flotation were compared,
it has been found that higher floatability
values were achieved with floc flotation. It can be obtained 96.8%
floatability of particles in presence of anionic surfactant (Aero 845, 750 g/t)
and nonionic polymer (SPP N 134, 30 g/t) at pH 8 and 5 min. conditioning time
for 5 min. flotation time by floc flotation in mechanical cell. 

Anahtar Kelimeler

Floc-flotation, Mechanical flotation cell, Fine particle, Wastewater

Mekanik Flotasyon Hücresinde Flok-flotasyonu ile Doğaltaş işleme atıksuyundan süspanse tanelerin yüzdürülmesi

Öz

Flokülasyon ve flotasyon yöntemleri, atıksulardan süspanse tanelerin
uzaklaştırılmasında ayrı ayrı uygulanan yöntemlerdir. Bununla birlikte bu
çalışmada mekanik flotasyon hücresinde bu iki yöntemin birlikte uygulandığı
flok flotasyonu yöntemi ve ince tanelerin yüzebilirliğini sağlamak için farkı
tip toplayıcı ve polimer kombinasyonlarının kullanılması araştırılmıştır. Klasik
flotasyon ve flok-flotasyonu deneyleri, toplayıcı tipi ve dozajı, pH, flotasyon
süresi, koşullandırma süresi ve polimer/ toplayıcı etkileşimleri gibi
parametrelerin ince tanelerin yüzebilirliği üzerine etkilerini belirlemek için
yürütülmüştür.

Klasik ve flok-flotasyonu deney sonuçları
karşılaştırıldığında, flok-flotasyonu ile çok daha yüksek yüzdürme değerlerine
ulaşıldığı bulunmuştur. Mekanik hücrede flok-flotasyonu ile pH 8’de 5 dakika
koşullandırma ve 5 dakika flotasyon süreleri için anyonik toplayıcı (Aero 845,
750 g/t) ve iyonlaşmayan polimer (SPP N 134, 30 g/t) kombinasyonunda tanelerin
yüzdürme verimi %96.8 olarak elde edilmiştir.  

Anahtar Kelimeler

floc-flotasyonu, mekanik flotasyon hücresi, İnce tane, Atıksu

Kaynakça

• [1] Gregory, J., Particles in water: Properties and Process, University College London, 2005,UK.[2] Bratby J,. Coagulation and Flocculation in Water and Wastewater Treatment, 2006, Published by IWA Publishing, London.[3] Kavaklı, M., Treatment, control and characteristics of marble processing plant wastewaters. M. Ersoy (Ed.), Turkey National 4th Marble Symposium, Afyon-Turkey, 2003,313–326.[4] Ozyonar F and Karagozoglu B., Systematic assessment of electrocoagulation for the treatment of marble processing wastewater. Int. J. Environ. Sci. Technol., 2012, 9:637–646.[5] Arslan E, Aslan S, Ipek U, Altun S, Yazıoğlu S. Physico-chemical treatment of marble processing wastewater and recycling of its sludge. Waste Management Research, 2005, 23, 550–559.[6] Ersoy B, Tosun I, Günay A, Dıkmen S. Turbidity Removal from Wastewaters of Natural Stone Processing by Coagulation/Flocculation Methods, Clean, 2009,37(3), 225–232.[7] Taşdemır T and Kurama H. Fine Particle Removal from Natural Stone Processing Effluent by Flocculation. Environmental Progress & Sustainable Energy, 2013, 32(2), 317-324.[8] Sabah E And Açiksöz C. Flocculation Performance of Fine Particles in Travertine Slime Suspension. Physicochemical Problems of Mineral Processing, 2012,48(2), 555-566.[9] Solak M, Kılıc M, Yazıcı H, Sencan A (2009) Removal of suspended solids and turbidity from marble processing wastewaters by electrocoagulation: Comparison of electrode materials and electrode connection systems, Journal of Hazardous Materials, 172, 345–352.[10] Katırcıoglu B.D, Karaca Z, Onen V, Delıormanlı A.H. The relationship between mineral content and flocculant characteristics for slurry waste water recycling at marble processing plants. Mine Water and The Environment, 2016,35 (3), 332–336.[11] Ehteshamı M, Maghsoodı S and Yaghoobnıa E. Optimum turbidity removal by coagulation/ flocculation methods from wastewaters of natural stone processing. Desalination and Water Treatment, 2016, 57 (44), 749-757.[12] Başaran H. K. and Tasdemır T. Determination of Flocculation Characteristics of Natural Stone Powder Suspensions in the Presence of Different Polymers. Physicochemical Problems of Mineral Processing 2014, 50(1), 169−184.[13] Rubıo J, Souza M.L and Smıth R.W. Overview of flotation as a wastewater treatment technique, Mineral Engineering, 2002, 15, 139-155.[14] Rosa Jj and Rubıo J. The FF (flocculation-flotation) process, Mineral Engineering, 2005 18, 701-707.[15] Matıs, K. A. Flotation Science and Engineering, 1995, 584 p, Marcel Dekker: New York.[16] Fuerstenau M.C, Jameson G and Yoon R.H. Froth flotation. 2007, A century of innovation, Society for Mining Metallurgy & Exploration. [17] Collıns G.L and Jameson G.J, Experiments on the flotation of fine particles, Chemical Engineering Science, 1976, 31, 985-991.[18] Jameson G.J Advances in fine and coarse particle flotation. Canadian Metallurgical Quarterly, 2010, 49, (4), 325-330.[19] Olıveıra C and Rubıo J. A short overview of the formation of aerated of flocs and their applications in solid/liquid separation by flotation. Minerals Engineering, 2012, 39, 124-132.[20] Rodrıgues R.T and Rubıo J. DAF- dissolved air flotation: Potential applications in the mining and mineral processing industry International Journal Mineral Processing, 2007, 82, 1-13.[21] Mıettınen T, Ralston J and Fornasıero D. The limits of fine particle flotation. Minerals Engineering, 2010, 23, 420-437.[22] Chen P, Lı H, Yı H, Jıa F, Yang L And Song S. Removal of graphene oxide from water by floc-flocculation. Separation and Purification Technology, 2018, 202, 27-33.[23] Sadowskı Z and Polowczyk I. Agglomerate Flotation of Fine Oxide Particles, Int. J. Miner. Process, 2004,74, 85-90.[24] Song S, Lopez-Valdıvıeso A, Reyes-Bahena Jl and Lara-Valenzuela C. Floc Flotation of galena and sphalerite fines. Minerals Engineering, 2001, 14 (1), 87-98.[25] Yın Z, S. Ahmed Khoso, Sun W , Hu Y , Zhaı J, Gao Y. , Zhang C, Lıu R. Flocculation of flotation tailings in presence of silicate gel and polymer, 2018, J. Cent. South Univ., 2018, 25: 1928–1937.[26] Yue T, Wu X, Daı L. Effect of magnetic seeding agglomeration on flotation of fine minerals, J. Cent. South Univ. 2019, 26: 75−87[27] Jameson Gj. Hydrophobicity and Floc Density in Induced–Air Flotation for Water Treatment. Physicochemical and Engineering Aspects.,1999,151, 269-281.[28] Mining Chemicals Handbook, Cytec Industries Inc., 2002.[29] Kılıc H. Treatment of Natural Stone Wastewaters by Flocculation and Floc-Flotation Methods. MSc Thesis, 2012, Eskişehir Osmangazi University, Turkey.[30] Somasundaran P and Krıshnakumar S. Adsorption of surfactants and polymers at the solid-liquid interface. Colloids and Surfaces, A: Physicochemical and Engineering Aspects, 1997,123-124, 491-513.[31] Boltoa, B and Gregory J. Organic Polyelectrolytes in Water Treatment, Water Research, 2007, 41, 2301-2324.[32] Besra L, Sengupta Dk, Roy Sk, Ay P Influence of polymer adsorption and conformation on flocculation and dewatering of kaolin suspension. Separation and Purification technology, 2004, 37, 231-246.[33] Hogg R, The Role of Polymer Adsorption Kinetics in Focculation. Colloids and Surfaces A: Physico chemical and Engineering Aspects, 1999, 146, 253–263.[34] Bıggs S, Habgood M, Jameson Gj, and Yan Y. Aggregate Structures Formed via a Bridging Flocculation Mechanism. Chemical Engineering Journal, 2000, 80, 13–22.[35] Rattanakawın C and Hogg R. Aggregate Size Distributions in Focculation. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2001, 177, 87–98.