Adsorption of acid orange 7 dye in aqueous solutions by spent brewery grains

Silva, Joaquim Pedro; Sousa, Sónia; Rodrigues, José Carlos; Antunes, Helena Maria Cunha do Carmo; Porter, John J.; Gonçalves, I.C.; Ferreira‐Dias, Suzana

doi:10.1016/j.seppur.2004.03.010

Cited by 185 publications

(15 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This indicates that decolorization mainly results from the process of adsorption and not from Orange II degradation. Similar results have been reported for the adsorption of dyes on other adsorbents [50]. …”

Section: Resultssupporting

confidence: 89%

Adsorption of Azo-Dye Orange II from Aqueous Solutions Using a Metal-Organic Framework Material: Iron- Benzenetricarboxylate

et al. 2014

View full text Add to dashboard Cite

A Metal-Organic Framework (MOF), iron-benzenetricarboxylate (Fe(BTC)), has been studied for the adsorptive removal of azo-dye Orange II from aqueous solutions, where the effect of various parameters was tested and isotherm and kinetic models were suggested. The adsorption capacities of Fe(BTC) were much higher than those of an activated carbon. The experimental data can be best described by the Langmuir isotherm model (R2 > 0.997) and revealed the ability of Fe(BTC) to adsorb 435 mg of Orange II per gram of adsorbent at the optimal conditions. The kinetics of Orange II adsorption followed a pseudo-second-order kinetic model, indicating the coexistence of physisorption and chemisorption, with intra-particle diffusion being the rate controlling step. The thermodynamic study revealed that the adsorption of Orange II was feasible, spontaneous and exothermic process (−25.53 kJ·mol−1). The high recovery of the dye showed that Fe(BTC) can be employed as an effective and reusable adsorbent for the removal of Orange II from aqueous solutions and showed the economic interest of this adsorbent material for environmental purposes.

show abstract

Section: Resultssupporting

confidence: 89%

Adsorption of Azo-Dye Orange II from Aqueous Solutions Using a Metal-Organic Framework Material: Iron- Benzenetricarboxylate

et al. 2014

View full text Add to dashboard Cite

show abstract

“…BSG without any treatment is capable of adsorb a common dye used in the paper and textile industries present in effluents. Activated carbons with similar and better adsorption capacity than others can also be produced by lignin present in BSG (Mussatto 2014;Silva et al 2004). Mussatto et al (2010) used ligin from BSG to prepare activated carbon, using phosphoric acid as an impregnating agent, by chemical activation.…”

Section: Bsg Applicationsmentioning

confidence: 99%

Current extraction techniques towards bioactive compounds from brewer’s spent grain – A review

Bonifácio-Lopes

Teixeira

Pintado

2019

Critical Reviews in Food Science and Nutrition

View full text Add to dashboard Cite

Background: Brewer's spent grain is one of the most abundant by-products of the brewing industry and is rich in various bioactive compounds (phenolic acids, insoluble dietary fiber and proteins). While at the present brewer's spent grain is mainly used as animal feed its rich nutritional content makes it an interesting alternative for food applications. Scope and approach: As the range of applications of the bioactive compounds extracted from by-products has been growing in recent years, there is the need to obtain and characterize these bioactive compounds. Extraction methods (supercritical carbon dioxide, autohydrolysis, alkaline hydrolysis, solvent extraction, ultrasound assisted extraction, dilute acid hydrolysis, enzymatic hydrolysis, microwave assisted extraction) have been developed and are always being subjected to new approaches to allow better extraction yields of the bioactive compounds. Key findings and conclusions: This review aims to provide a better understanding of the current advantages and limitations of brewer's spent grain extraction processes and to provide a background of brewer's spent grain composition and applications. HIGHLIGHTS The re-use of agro-industrial by-products can origin new added-value products BSG is an agro-industrial by-product and is a source of various bioactive compounds Extraction methods have been applied to extract these compounds from BSG It is needed to find new techniques and new possible applications to the BSG

show abstract

“…Conventional chemical and physical discoloration processes, including adsorption (Pedro Silva et al 2004; Thinakaran et al 2008), coagulation (Golob et al 2005; Bali and Karagozoglu 2007), filtration (Capar et al 2006), ozonation (Muthukumar and Selvakumar 2006), photo-fenton process (Ilha et al 2009), UV/NaOCl (Zeng et al 2009), electrochemical oxidation (Soloman et al 2009), ultrasonic irradiation (Madhavan et al 2010) and UV/H 2 O 2 (Damle and Shukla 2010) have also been utilized.…”

Section: Introductionmentioning

confidence: 99%

“…Like many other dyes of its class, AO51 is bright in color due to the presence of one or several azo (–N=N–) groups associated with substituted aromatic structures. Many studies have considered physical adsorption techniques as the preferred means for removing acid dyes (Tsai et al 2004; Pedro Silva et al 2004), whereas the decolorization of AO51 by the action of laccase has been the subject of few studies.…”

Section: Introductionmentioning

confidence: 99%

Decolorization of the azo dye Acid Orange 51 by laccase produced in solid culture of a newly isolated Trametes trogii strain

et al. 2012

View full text Add to dashboard Cite

Adsorption of acid orange 7 dye in aqueous solutions by spent brewery grains

Cited by 185 publications

References 23 publications

Adsorption of Azo-Dye Orange II from Aqueous Solutions Using a Metal-Organic Framework Material: Iron- Benzenetricarboxylate

Adsorption of Azo-Dye Orange II from Aqueous Solutions Using a Metal-Organic Framework Material: Iron- Benzenetricarboxylate

Current extraction techniques towards bioactive compounds from brewer’s spent grain – A review

Decolorization of the azo dye Acid Orange 51 by laccase produced in solid culture of a newly isolated Trametes trogii strain

Contact Info

Product

Resources

About