Coagulation performance and floc characteristics of aluminum sulfate using sodium alginate as coagulant aid for synthetic dying wastewater treatment

Wu, Changzhi; Yan, Wei; Gao, Baoyu; Zhao, Yanxia; Yue, Qinyan

doi:10.1016/j.seppur.2012.05.009

Cited by 79 publications

(42 citation statements)

References 31 publications

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“…Hence, in this study, it was found that an increase of coagulant concentration from 30 to 50 mg/l led to an increase in the dye removal, and as the dose increased to 80 mg/l, the dye removal decreased. In the research conducted by Caihone, the combination of alum and sodium alginate rather than alum alone had a more positive effect on the dye removal (2). The use of a polymer in combination with a conventional coagulant could enhance the rate of dye removal.…”

Section: Discussionmentioning

confidence: 99%

“…The procedure of conductance of experiments has been based on a standard method (15 Figure 1 demonstrates the structure of the applied dye and Figure 2 represents the structure of the coagulant aid substance of sodium alginate (2,16). In the Fenton oxidation process and coagulation, the best performance of each step is considered to be constant in the next stage.…”

Section: Methodsmentioning

confidence: 99%

“…It usually has a large amount of organic dyeing compounds (1,2). Azo dyes contain one or several Azo bonds (-N=N-), and are one of the most important synthetic dyeing groups.…”

Section: Introductionmentioning

confidence: 99%

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Comparing Fenton Oxidation with Conventional Coagulation Process for RR198 Dye Removal from Aqueous Solutions

Esrafili

Yengejeh

2017

Iran J Health Sci

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Background and purpose: The wastewater discharged from textile industries is one of the main environmental pollutants that causes many problems for the environment if it is not treated or discharged. The present study compared Fenton oxidation process with coagulation and flocculation using the natural coagulant of Sodium Alginate in order to remove Reactive Red 198 Dye. Materials and methods: This study was carried out in an experimental scale, in which the effects of pH, concentration of the dyeing substance, concentration of iron sulfate and hydrogen peroxide for the oxidation of Fenton and the effects of pH, concentration of coagulant, concentration of dyeing substance, and the Coagulant Aid of Sodium Alginate were all investigated. Results:The results of the current study indicated that in the Fenton process, the efficiency of RR 198 Dye removal under acidic conditions (pH=3) at optimal conditions was achieved to be 96.2% for the dye with the concentration of 20 mg/l. By using 70 mg/l of the coagulant of Poly-Aluminum Chloride in coagulation and flocculation process, 71.2% of the dye removal was obtained for the initial concentration of the dye as 20 mg/l. Also, by adding 50 mg/l of Sodium Alginate to the optimal concentration of Poly-Aluminum Chloride, the dye removal increased up to 92.1%. Conclusion: Although under optimal conditions, the efficiency of coagulation process with coagulant aid was only 4% less than the efficiency of Fenton process, considering the advantages of Fenton oxidation including lack of production of excessive sludge, a higher efficiency was gained at large doses of dye.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Comparing Fenton Oxidation with Conventional Coagulation Process for RR198 Dye Removal from Aqueous Solutions

Esrafili

Yengejeh

2017

Iran J Health Sci

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“…Although enhanced coagulation is considered to (nm) 270 (Fan et al, 2008;Gonzalez et al, 2007) 297 (Cathalifaud et al, 1997;Gonzalez et al, 2007) 235 (Cathalifaud et al, 1997) Chemical structure PKa 9.89 (20 • C) 2.97 and 13.6 (20 • C) 2. 89 and 5.41 (25 • C) can be costly and the resultant excessive iron may cause unpleasant metallic taste, odor and color, corrosion, foaming or staining (Matilainen et al, 2010;Wu et al, 2012). Thus, in recent years, there has been considerable interest in the development of biomaterial to become an alternative for conventional coagulants.…”

Section: Introductionmentioning

confidence: 99%

Response surface methodology for the elimination of humic substances from water by coagulation using powdered Saddled sea bream scale as coagulant-aid

Harfouchi

Hank

Hellal

2016

Process Safety and Environmental Protection

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“…Yüksek seviyede kimyasal oksijen ihtiyacı, çözünmüş katılar, dalgalanan pH değerleri ve zayıf biyolojik bozunma gibi faktörler tekstil endüstrisi atık sularını, çeşitli balık ve mikrobiyolojik türler için kanserojen, zehirli ve mutajen hale getirmektedir [2,3]. Tekstil atık sularında yer alan çeşitli bileşikler, ışığın suya nüfuz etmesiyle etkileşime girmekte ve ekosistemin dağılmasına sebep olmaktadır [4,5].…”

Section: Gi̇ri̇ş (Introduction)unclassified

Tekstil Atık Sularından C.I. Bazik Mavi 3 Boyarmaddesinin Elektrokimyasal Uygulama ile Giderilmesi

Bulut¹

2016

SAUFenBilDer

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ÖZTekstil boyama endüstrisinde kullanılan Bazik Mavi 3 boyarmaddesinin alüminyum elektrot kullanılarak elektrokimyasal olarak tekstil atık sularından giderimi üzerinde çalışılmıştır. Kesikli proses ile yapılan deneyler sonrasında 10 dakika sonunda pH8 değerinde %97'den fazla giderim etkinliği hesaplanmıştır. Elektrokimyasal işlemin 6. dakikası sonunda 50-400 mg/L aralığındaki konsantrasyonlardaki boya giderim etkinliği %92-95 arasında değişirken bu oran, 500 ve 600 mg/L için sırasıyla %72 ve %60 olarak hesaplanmıştır. 10. dakika sonunda ise bütün konsantrasyon değerlerindeki boya giderim oranı %96 civarındadır. Akım yoğunluğu değerlendirildiğinde ise boya giderim etkinliği 333 A/m 2 akım yoğunluğu ile 4. dakikadan sonra (%96) işlem bitene kadar çok fazla bir artış göstermemiş ve 10. dakikada %97 seviyesine ulaşmıştır.Anahtar Kelimeler: elektrokoagülasyon, tekstil atık suları, bazik mavi 3, alüminyum elektrot Removal of C.I. Basic Blue 3 dyestuff from textile waste waters by electrochemical treatment ABSTRACTThe present study investigates the electrochemical treatment of Basic Blue 3 dyestuff from the textile waste waters. We achieved more than 97% color removal with pH8 after 10 minutes. In terms of initial dye concentrations, 92-95%, 72 and 60% dye removal efficiencies were obtained in 6 minutes for 50-400 mg/L, 500 and 600 mg/L initial dye concentrations respectively. In 10 minutes removing efficiencies became 96% for all the concentrations. When we consider the current density parameter, 96% removal efficiency was obtained with 333 A/m 2 current density in 4 minutes respectively. However the removal efficiency only increases to 97% in 10 minutes.

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Coagulation performance and floc characteristics of aluminum sulfate using sodium alginate as coagulant aid for synthetic dying wastewater treatment

Cited by 79 publications

References 31 publications

Comparing Fenton Oxidation with Conventional Coagulation Process for RR198 Dye Removal from Aqueous Solutions

Comparing Fenton Oxidation with Conventional Coagulation Process for RR198 Dye Removal from Aqueous Solutions

Response surface methodology for the elimination of humic substances from water by coagulation using powdered Saddled sea bream scale as coagulant-aid

Tekstil Atık Sularından C.I. Bazik Mavi 3 Boyarmaddesinin Elektrokimyasal Uygulama ile Giderilmesi

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