Removal of basic dyes from aqueous solution by sorption on phosphoric acid modified rice straw

Gong, Renmin; Jin, Youbin; Chen, Jian; Hu, Yun; Sun, Jian

doi:10.1016/j.dyepig.2006.01.037

Cited by 101 publications

(51 citation statements)

References 23 publications

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“…at mildly elevated temperatures enhance their sorption capacity for metal ions and basic dyes (Lehrfeld 1997;Wafwoyo et al 1999;Marshall et al 1999Marshall et al , 2000Vaughan et al 2001;Wong et al 2003;Altundogan et al 2007;Gong et al 2006Gong et al , 2007Gong et al , 2008. It has been reported that an estimated production cost for citric acid-modified soybean hull is $1.17/kg versus typical retail costs $4-40/kg for commercial, petroleum-based cation exchange resins when purchased in bulk quantities .…”

Section: Introductionmentioning

confidence: 99%

A study on cations and color removal from thin sugar juice by modified sugar beet pulp

Arslanoğlu

Tümen

2011

J Food Sci Technol

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This article describes the use of citric acid modified sugar beet pulp as new ion-exchanger sorbent for the removal of metal cations and colorants from thin juice. The results of batch adsorption runs concerning the effects of contact time, material dosage, temperature and pH drop were presented and discussed. Experimental data on the removal of metal cations showed that the sorption process was rapid and reached equilibrium in 60 min. Modified material in acidic form caused to a significant pH drop in thin juice, which could result with sucrose inversion. Uptake of metal cations increased with temperature whereas that of color decreased. Neutralised type modified product gave more satisfying results. After six successive contacts, 49.7%, 37.5% and 43.7% removals for Ca-Mg, K and color, respectively, were obtained by using neutralised form of modified sugar beet pulp.

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Section: Introductionmentioning

confidence: 99%

A study on cations and color removal from thin sugar juice by modified sugar beet pulp

Arslanoğlu

Tümen

2011

J Food Sci Technol

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“…Tekstil boyama proseslerinde etkin boyamanın yapılamaması sonucunda boyarmaddenin %5-10'u atıksulara karışmakta ve reaktif boyarmaddeler için bu oran %50'ye kadar çıkmaktadır [8][9][10]. Literatür incelendiğinde tekstil atıksularından renk giderimi ve arıtılması için birçok yöntemin geliştirildiği ve bu alanda yapılan araştırmalarda biyolojik oksidasyon, kimyasal çöktürme, ozonla oksidasyon, klorlama, adsorpsiyon, kimyasal oksidasyon, membran prosesleri gibi birçok yöntemin uygulandığı görülmektedir [11][12][13][14][15][16][17]. Yüksek renk giderimi elde edilmesi sebebi ile tekstil atıksularının arıtımında elektrokimyasal yöntemler daha fazla kullanılmaktadır.…”

Section: Introductionunclassified

The Investigation of the Removal of Reactive Orange 16 DYE From Textile Wastewater by Using Electrocoagulation Process

Karagözoğlu¹,

Malkoç²

2017

Cumhuriyet Science Journal

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Özet: Bu çalışmada tekstil atıksularının Al ve Fe elektrotları kullanılarak elektrokoagülasyon ile arıtımı amaçlanmıştır. Çalışmada elektrokoagülasyon ile Remazol Brilliant Orange 3R Spec Gran (Reactive Orange 16) reaktif tekstil boyası çözeltilerinden, renk, kimyasal oksijen ihtiyacı (KOI) ve bulanıklık giderimi incelenmiştir. Bu amaçla monopolar paralel bağlı alüminyum ve demir elektrotların kullanıldığı bir elektrokimyasal reaktörde, pH, akım yoğunluğu, iletkenlik ve işletme süresinin, proses performansı üzerine etkileri araştırılmıştır. Ayrıca enerji ve elektrot tüketimine bağlı olarak işletme maliyeti hesaplanmıştır. Çalışma sonucunda, alüminyum elektrot ile elektrokoagülasyon prosesinde optimum şartlar; pH:6, akım yoğunluğu 100A/m 2 , iletkenlik 500 µS/cm ve işletme süresi 20 dakika olarak belirlenmiştir. Bu şartlarda %79,5 renk, %60,2 KOİ ve %91,9 bulanıklık giderme verimi elde edilmiştir. Demir elektrot için optimum deney şartları ise; pH:8, akım yoğunluğu 75 A/m 2 , iletkenlik 1000 µS/cm ve işletme süresi 20 dakika olarak belirlenmiş, bu şartlarda %99,07 renk, %42,26 KOİ ve %91,89 bulanıklık giderme verimi elde edilmiştir. Alüminyum ve demir elektrotlar için işletme maliyeti sırasıyla 1,489 $/m 3 ve 0,504 $/m 3 olarak hesaplanmıştır.Anahtar Kelimeler: Elektrokoagülasyon, elektrot, reaktif tekstil boyası, KOI, bulanıklık The Investigation of the Removal of Reactive Orange 16 DYE From Textile Wastewater by Using Electrocoagulation ProcessAbstract: Treatment of textile wastewater by electrocoagulation using Al and Fe electrodes was aimed in this study. Removal of color, chemical oxygen demand (COD) and turbidity from Remazol Brilliant Orange 3R Spec Gran (Reactive Orange 16) reactive textile dyestuff solutions was investigated in the study. For this purpose, effects of pH, current density, conductivity and operating time on process performance have been researched in an electrochemical reactor in which parallel connected monopolar aluminum and iron electrodes were used. Furthermore, operating costs depending on energy and electrode consumption were calculated. Optimum conditions for electrocoagulation process using aluminum electrode have been determined to be pH:6, current density:100A/m2, conductivity:500µS/cm and operating time:20min. 79,5% color, 60,2% COD and 91,9% turbidity removal efficiencies were obtained under these conditions. Optimum experimental conditions, for the iron electrode, have been determined to be pH:8, current density:75A/m2, conductivity:1000µS/cm and operating time:20min which resulted in 99,07% color, 42,26% COD and 91,89% turbidity removal efficiencies. Operational costs for aluminum and iron electrodes were calculated to be 1,489$/m3 and 0,504 $/m3 respectively.

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“…According to Namasivayam et al (2001) and Waranusantigul et al (2003), dye effluents in receiving streams interfere with transmission of light into streams and reduce photosynthesis. Many dye compounds and their metabolites are either, toxic, carcinogenic or teratogenic (Gong et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Silica gel matrix immobilized Chlorophyta hydrodictyon africanum for the removal of methylene blue from aqueous solutions: Equilibrium and kinetic studies

Muzarabani¹,

Mupa²,

Gwatidzo³

et al. 2015

Afr. J. Biotechnol.

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Chlorophyta hydrodictyon africanum was immobilized on a silica gel matrix to improve its mechanical properties. The algae-silica gel adsorbent was used for batch sorption studies of a cationic dye, methylene blue (MB). Optimum adsorption was obtained with a dosage of 0.8 g bio sorbent. Results from sorption studies show that 124.11 mg·g -1 of MB could be adsorbed at an optimum pH of 8 and immobilization of 300 mg per gram silica. Maximum immobilization was 400 mg biomass per gram silica. Sorption capacity increased with an increase in initial dye concentration and reached equilibrium within 30 min. Three models were used to simulate kinetic data and the pseudo-second order model gave a better fit with R 2 greater than 0.98 in all cases. Equilibrium studies revealed that the adsorption of MB followed Freundlich isotherm (R 2 =1.00).

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Removal of basic dyes from aqueous solution by sorption on phosphoric acid modified rice straw

Cited by 101 publications

References 23 publications

A study on cations and color removal from thin sugar juice by modified sugar beet pulp

A study on cations and color removal from thin sugar juice by modified sugar beet pulp

The Investigation of the Removal of Reactive Orange 16 DYE From Textile Wastewater by Using Electrocoagulation Process

Silica gel matrix immobilized Chlorophyta hydrodictyon africanum for the removal of methylene blue from aqueous solutions: Equilibrium and kinetic studies

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