Biosorption of dye from textile wastewater effluent onto alkali treated dried sunflower seed hull and design of a batch adsorber

Oguntimein, Gbekeloluwa B.

doi:10.1016/j.jece.2015.09.028

Cited by 92 publications

(45 citation statements)

References 46 publications

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“…1∕n e (695.10 mg g −1 ). To better understand whether the present dye adsorption process was favourable or not for the Langmuir equation, a dimensionless separation factor (R L ) is considered [43], using Eq. 17.…”

Section: Effect Of the Initial Dye Concentration And Equilibrium Isotmentioning

confidence: 99%

“…On increasing demand, various industries like textile, paper, printing, food, leather, cosmetic, pesticide, paint, etc. formulate their products with colour by dyes or pigments [41,43]. Discharging their effluents into receiving streams not only affects environmental sustainability but also can impart their acute toxicity to aquatic organisms as well as human health.…”

Section: Introductionmentioning

confidence: 99%

“…Most of these dyes are noxious and/ or carcinogenic in nature [20,26]. Therefore, an efficient treatment for controlling water pollution has become an imperative task [43]. However, the fact is that these dyes are also very difficult to treat since they are the synthetic origin of complex molecular structure, highly resistant to aerobic digestion and stable when exposed to light, heat and oxidizing agents [26,28].…”

Section: Introductionmentioning

confidence: 99%

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Biosorption of acid yellow-99 using mango (Mangifera indica) leaf powder, an economic agricultural waste

et al. 2019

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The competency of mango leaf powder (MLP), an eco-friendly and cost-effective adsorbent, has been extensively studied for the removal of a carcinogenic azo dye, acid yellow-99 (AY-99), from simulated wastewater on principal interest in combating water pollution and to comprehend the mechanisms of the phenomenon. Optimum dye adsorption occurs at pH 2.5, whereas the temperature has no significant effect. MLP can effectively adsorb 708.15 mg g −1 of dye as a function of the initial dye concentration with excellent fitting to the Langmuir isotherm model illustrating monolayer adsorption. The process is rather swift to be completed within ~ 160 min following film diffusion model and pseudo-second-order rate kinetics. The magnitude of hindrance exerted by NaCl in dye adsorption is found to be quite insignificant. The biomass is competent enough for anionic dye decolourization in the binary mixture (AY-99 + AR-88) determined by the first-order derivative spectrophotometric method. Thermodynamically the process is spontaneous, endothermic and entropy-driven. Zeta potential, XRD, SEM-EDXA and X-ray elemental mapping analyses have been used to assess the morphological changes and the mechanisms of dye interaction with MLP. FTIR spectroscopy and chemical modification of functional groups of biomass establish the major contribution of hydroxyl groups for effective dye decolourization through complexation and electrostatic interactions.

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Section: Effect Of the Initial Dye Concentration And Equilibrium Isotmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Biosorption of acid yellow-99 using mango (Mangifera indica) leaf powder, an economic agricultural waste

et al. 2019

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“…The pH of the aqueous solution was a significant factor controlling the adsorption process by affecting both the adsorbent surface charge (protonated or deprotonated) and the degree of ionization of dye molecules [25,26]. The adsorption of basic and acid dyes by alginate/5 % sericin composite beads was studied at different pH solutions from 1 to 10, as shown in Fig.…”

Section: Effect Of Phmentioning

confidence: 99%

Adsorption of Basic and Acid Dyes Using Alginate/Sericin Composite Beads

Rangsanyutthana¹,

Jintakosol²,

Nitayaphat³

2018

Asian J. Chem.

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INTRODUCTIONSynthetic dyes such as cationic (all basic dyes) and anionic (direct, acid and reactive dyes) were found to be present in wastewater from industries such as textile, leather, paper, printing, plastic, cosmetics and other. This dye pollutant has become a mojor source of contamination which is toxic and has detrimental effect on human health [1,2]. Moreover, the dyes pollutants were determinant hindering photosynthesis effects on ecosystem [3]. As a result the removal of the dye from the wastewater is essential. The methods of dye removal from wastewater, include membrane filtration [4], coagulationflocculation [5], advanced oxidation process [6], biodegradation [7], adsorption process [8] and ion exchange [9].The adsorption process is considered to be very effective for the removal of dye from wastewaters. Activated carbons from natural wastes are a great adsorbent due to low-cost materials, waste materials and by-products [10,11]. However, there are many problems regarding the regeneration of the exhausted activated carbon [12]. Thus, an effort has been made to develop them by using adsorbent materials such as: polymers, clays [13] Alginate/sericin composite beads were prepared from a blend between sericin and alginate by the gelation process. The composite beads were used as the adsorbent for the removal of basic and acid dyes from an aqueous solution. The morphological structure of the beads was characterized by scanning electron microscopy (SEM). Adsorption experiments were conducted using contact time, concentration of sericin, pH and adsorbent dosage. The equilibrium adsorption data was achieved within 360 min at 5 % w/v of sericin. The Langmuir isotherm model showed the maximum monolayer adsorption capacity for basic dye (pH 8) and acid dye (pH 2) was 5.98 and 7.60 mg/g, respectively. The adsorption kinetics were described by the pseudo second-order model. The desorption experiment was demonstrated and repeated three times, all of which exhibited that it was regenerative and reusable. This study demonstrates that the alginate/sericin composite beads are effective adsorbent for the removal of dyes from aqueous solution.

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“…The use of sunflower seed husks as a supplementary fuel in the iron ore sintering process [19], for the removal of dye from the textile industry's wastewater effluent [20], or for obtaining bio-oils [21], has also been studied. Furthermore, the utilization of residual-biomass generated in distilleries and breweries for the production of added-value products has been reviewed [22].…”

Section: Introductionmentioning

confidence: 99%

Feasibility of Utilization of Charcoal and Ashes From Biomass-Energy Processes in Construction Materials

Quaranta¹,

Caligaris²,

Pelozo³

et al. 2017

WIT Transactions on Ecology and the Environment

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Biomass-energy processes are those used to obtain energy by the burning or biochemical converting of any organic matter to be used for fuel. In recent years, some materials used as a source for biomass energy have been obtained from the discards of agricultural activities. These include wood, sawdust, corn, sugarcane and rice husks, among others. The processes for converting biomass into energy are numerous. The most commonly used are combustion, co-firing process and pyrolysis. The residual endproducts obtained from these processes are highly dependent on the process conditions, especially temperature, pressure and atmosphere. Char and ashes are the most commonly obtained materials. The objective of this work is to analyse the feasibility of reusing these discards of biomass-energy processes, as additions in clay mixtures for the production of ceramic materials for civil construction. For this purpose, charcoal and ashes obtained from various biomasses have been characterized by SEM, EDS, DTA-TGA, XRD, etc. These results, and the determination of the theoretical sintering temperatures by the use of ternary diagrams, lead to the establishment of the feasibility of using these discards in current ceramic industry processes. Charcoal and ashes from sunflower husks, brewery waste and pine sawdust are the materials studied.

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Biosorption of dye from textile wastewater effluent onto alkali treated dried sunflower seed hull and design of a batch adsorber

Cited by 92 publications

References 46 publications

Biosorption of acid yellow-99 using mango (Mangifera indica) leaf powder, an economic agricultural waste

Biosorption of acid yellow-99 using mango (Mangifera indica) leaf powder, an economic agricultural waste

Adsorption of Basic and Acid Dyes Using Alginate/Sericin Composite Beads

Feasibility of Utilization of Charcoal and Ashes From Biomass-Energy Processes in Construction Materials

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