Adsorption of dye onto raw and surface modified tamarind seeds: isotherms, process design, kinetics and mechanism

Kumar, P. Senthil; Sivaranjanee, R.; Vinothini, U.; Raghavi, M.; Rajasekar, K.; Kumar, Rajiv

doi:10.1080/19443994.2013.792016

Cited by 84 publications

(8 citation statements)

References 34 publications

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“…In this direction, the literature includes the use of adsorbents, such as rice husk, feldspar, bagase fly ash, neem sawdust, chitosan, peat, corncob activated carbon and cashew nutshell in their natural or modified forms [5][6][7][8][9][10][11][12]. Further, in order to improve the removal characteristics of the adsorbent, different complex modifications reported in the literature includes, sulfuric acid-treated orange peel, surface modified tamarind seeds, surface modified Strychnos potatorum seeds, ultrasonic modified corn pith, synthesized chitosan and microwave-assisted sawdust [13][14][15][16][17][18]. Further, much research has been conducted on dye removal by raw and modified clay varieties [19][20][21].…”

Section: Electronic Supplementary Materialsmentioning

confidence: 99%

Removal of textile dyes from industrial effluents using burnt brick pieces: adsorption isotherms, kinetics and desorption

2020

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Textile dyes, namely Sumifix Blue Exf (Dye 1), Sumifix Rubine Exf (Dye 2) and Sumifix Yellow Exf (Dye 3), show their characteristic λ max values at 605 nm, 545 nm and 415 nm, respectively. Gel electrophoresis of the three individual dyes investigated indicates that all of them are negatively charged. Among different adsorbents, brick clay shows the highest efficiency for the removal of dyes from aqueous solution. The optimum values of experimental parameters, namely treatment temperature, adsorbent dosage, shaking time, settling time and initial solution pH determined to be 200 °C, 4.0 g, 15.0 min, 15.0 min and pH < 10, respectively. The Langmuir model is the best-fitted one for the experimental adsorption data of the dyes leading to the highest removal ability under optimized conditions as 1667 mg kg −1 , 3333 mg kg −1 and 2500 mg kg −1 for Dye 1, Dye 2 and Dye 3, respectively. All three dyes follow pseudo-second-order kinetics for their adsorption describing initial rate of adsorption in the order, Dye 1 ≈ Dye 2 (10,000 mg kg −1 min −1) > Dye 3 (3333 mg kg −1 min −1), and further, real dye effluent containing each of the above dyes having calculated initial concentrations of 42 mg L −1 (Dye 1), 106 mg L −1 (Dye 2) and 39 mg L −1 (Dye 3), shows, 87%, 86% and 45% removal efficiencies at their λ max values with the treatment of burnt brick clay particles under optimized conditions. Desorption of the dyes from the dye-adsorbed adsorbent indicates that desorption prefers basic conditions.

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Section: Electronic Supplementary Materialsmentioning

confidence: 99%

Removal of textile dyes from industrial effluents using burnt brick pieces: adsorption isotherms, kinetics and desorption

2020

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“…About half of the global synthetic dyes are classified as nonbiodegradable and carcinogenic. − During dyeing, a significant portion (30–50%) of dye gets unfixed and thereby is retained in water and needs to be treated. ,, The basic principles of wastewater treatment include separation of suspended and dissolved solids, oxidation of oxygen demanding components, neutralization, and removal of toxic substances as well as removal of unfixed dyes . For TW treatment, various methods such as physical, chemical, and biological process are applied efficiently. ,, Nowadays, adsorption process, a physical method, is regarded as the most effective way for the treatment of TW; − however, disposal, management, and regeneration of the adsorbents accompanied by sludge after the adsorption pose another environmental headache. Also, following these processes, it is hardly possible to recover dyes after removing from wastewater and reusing them further. − …”

Section: Introductionmentioning

confidence: 99%

Sustainable Wastewater Treatment via Dye–Surfactant Interaction: A Critical Review

Rashid

Kabir

Biswas

et al. 2020

Ind. Eng. Chem. Res.

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Dye containing industrial effluent streams are a cause of major environmental concerns, especially those which are not easily biodegradable. Many techniques have been developed to remove dyes from the waste stream; however, most of them suffer from a weakness of efficiency and effectiveness when an attempt is made for industrial implementation. A recently developed dye removal method using surfactants offers the benefits of high removal efficiency, ease of waste disposal, scope of efficient recovery, and the use of nontoxic and less harmful reagents. This review aims to contribute to this growing area by summarizing the mechanisms of dye−surfactant interactions and investigating the influence of different process parameters such as pH, concentration of surfactants, dyes, and electrolytes, temperature, etc. on the efficiency of the method. The review also attempts to present future research scopes of these techniques with a critical analysis of industrial applicability.

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“…Parametrelerin negatif değerlerine göre; AB 324'nin LBP'na adsorbsiyonunun ekzotermik (ΔH<0), istemli (ΔG<0) ve katı/sıvı ara yüzeyinde yapısal değişiklik olmaksızın yürüyen stabil (ΔS<0) sistemler olduğu sonucuna varılmıştır (Zhang et al 2011). Termodinamik analizler ile literatürde verilen bazı adsorpsiyon proseslerinin ekzotermik ve istemli olduğu belirlenmiştir (Dong et al 2014;Peng et al 2014;Senthil et al 2014;Zhang et al 2014;El-Bindary et al 2014…”

Section: Termodinamik Parametrelerin Belirlenmesiunclassified

Aci̇d Blue 324 Boyarmaddesi̇ni̇n Levrek Baliği Puluna Adsorbsi̇yonu

Uzunoğlu¹,

Özer²,

Ercan³

et al. 2015

AUBTD-A

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Bu çalışmada, AB 324'ün levrek balığı pulu (LBP)'na adsorbsiyonu kesikli bir sistemde araştırılmış; optimum ortam koşulları; başlangıç pH'sı 2.0, sıcaklık 25 oC, başlangıç AB 324 derişimi 200 mg/L ve adsorbent derişimi 1.0 g/L olarak belirlenmiştir. Çalışılan balık pulunun izoelektrik pH'sı 7.25 olarak belirlenmiş; izoelektrik pH değerinden daha düşük pH değerlerinde yüksek giderimler elde edilmiştir. Adsorpsiyon dengesinin Langmuir izoterm modeline, kinetik verilerin ise yalancı ikinci mertebe kinetik modeline çok iyi uyduğu saptanmıştır. AB 324'ün levrek balığı pulu (LBP)'na adsorbsiyonunda tanecik içi ve dışı difüzyonun etkili olduğu sonucuna varılmıştır. Termodinamik çalışmalar AB 324'ün LBP'na adsorbsiyonunun ekzotermik ve istemli olduğunu göstermiştir. LBP'nun adsorpsiyon öncesi ve sonrası karakterizasyonu FTIR, SEM ve EDX analizleri ile gerçekleştirilmiştir.

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Adsorption of dye onto raw and surface modified tamarind seeds: isotherms, process design, kinetics and mechanism

Cited by 84 publications

References 34 publications

Removal of textile dyes from industrial effluents using burnt brick pieces: adsorption isotherms, kinetics and desorption

Removal of textile dyes from industrial effluents using burnt brick pieces: adsorption isotherms, kinetics and desorption

Sustainable Wastewater Treatment via Dye–Surfactant Interaction: A Critical Review

Aci̇d Blue 324 Boyarmaddesi̇ni̇n Levrek Baliği Puluna Adsorbsi̇yonu

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