A hybrid adsorption membrane process for removal of dye from synthetic and actual wastewater

Alardhi, Saja Mohsen; Albayati, Talib M.; Alrubaye, Jamal M.

doi:10.1016/j.cep.2020.108113

Cited by 91 publications

(33 citation statements)

References 36 publications

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“…When the adsorption-ultrafiltration process was combined, the removal of Congo red was as high as 99%. Previous research also reported that a hybrid adsorption membrane process also achieved More than 97 % dye removal in removing dyes from contaminated water (Alardhi et al 2020). Compared with ultrafiltration alone, membrane fouling was considerably mitigated, as demonstrated by a minor TMP increase of 6 kPa in 30 minutes.…”

Section: Simulated Actual Dye Wastewatermentioning

confidence: 86%

TiO2/CTS/ATP Adsorbent and its Application in Adsorption-Ultrafiltration Process for Dye Wastewater Purification

Wang

Zhi

et al. 2021

Preprint

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Industrial dyeing produces highly polluting wastewater and threatens the environment. Effective treatment of dyeing wastewater is a crucial step to prevent toxic chemicals from entering receiving waters. This study aimed to assess a modified attapulgite (ATP)-based adsorbent for dyeing wastewater purification by introducing chitosan (CTS) and titanium dioxide (TiO2) into the adsorbent material named TiO2/CTS/ATP. It was found that, after modification, the adsorbent showed a lower hydrophilicity, as demonstrated by an increase in the water contact angle from 9.1° to 42°, which could reduce the water adsorption tendency and potentially facilitate contaminants adherence. The modification also led to a significantly increased specific surface area of 79.111 m2/g from 3.791 m2/g, and exhibited more uniform and smaller particle size (reduced to 2.52 µm from 3.99 µm). When the TiO2/CTS/ATP adsorbent was applied to the adsorption of Congo red solution, the adsorption efficiency was observed to reach to 97.6% at the dosage of 0.5 g/L. Furthermore, the combination of adsorption and ultrafiltration was able to achieve 99% Congo red removal. Adsorption pretreatment prior to the ultrafiltration also enabled to reduce membrane fouling, increased the reversible membrane fouling and resulted in a considerably lower transmembrane pressure as compared with the direct ultrafiltration filtration system.

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Section: Simulated Actual Dye Wastewatermentioning

confidence: 86%

TiO2/CTS/ATP Adsorbent and its Application in Adsorption-Ultrafiltration Process for Dye Wastewater Purification

Wang

Zhi

et al. 2021

Preprint

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“…There is other possible synergestic processes that incorbrate ultrasound with membrane technology and adsorption in a hybrid system as a combination of filtration and adsorption has proven to be effective for treating wastewater [82]. As an example for such hybrid system is the combined UF, US and activated carbon processes tested by Mona et al [83] for removing industerial dyes.…”

Section: Mf-usmentioning

confidence: 99%

Ultrasound-assisted membrane technologies for fouling control and performance improvement: A review

Naji

Al-Juboori

Khan

et al. 2021

Journal of Water Process Engineering

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Membrane separation is widely used in wastewater treatment and desalination due to its high performance and ability to handle feed solutions of different qualities. Despite vast history of success, membrane fouling remains a major system deficiency that imposes substantial process limitations by reducing permeate production and increasing energy demand. Besides, chemical cleaning-in-place (CIP) adversely affects membrane integrity and generates an extra waste stream. Ultrasound (US) is a relatively new cleaning technique that improves process performance by mitigating fouling accumulation at a membrane surface and improving permeate flux by promoting mass and heat transfer. US-assisted membrane processes is an efficient method for fouling reduction and significant flux improvement. This study comprehensively reviews US applications in pressure-, thermally-and osmotic-driven membrane technologies and their impact on process performance. It also explores the impact of US operating conditions on membrane separation properties and how these parameters can be tuned to achieve the desirable outcome. To date, the application of US in membrane technologies is limited to laboratory tests. In the authors opinion, there is a niche market for US-assisted membrane technology in heavily contaminated water such as wastewater and brine. After critical analysis of the literature, we found that there are still several aspects of the process need to be scrutinized carefully to make an adequate evaluation of its feasibility on an industrial scale. The most urgent one is the techno-economic evaluation of the technology based on large-scale and long-term tests. The study proposed a set of recommendations for future research directions of US applications in membrane technologies.

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“…At low concentrations, it is effectively reduced to the Freundlich isotherm, not obeying Henry's law; at high concentrations, the model predicts a monolayer adsorption capacity, characteristic of the Langmuir isotherm [43]. Equation (7) describes this model, as follows:…”

Section: Adsorption Isothermsmentioning

confidence: 99%

“…Different methods have been developed for wastewater treatment, including biological [5,6], membrane technology [7,8], electrochemistry [9,10], and adsorption. Adsorption has become a competitive method in the field of wastewater treatment, because most of these methods are not widely used due to their high costs, additional environmental effects, and very low efficiency [11].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Reactive Dye onto Uçá Crab Shell (Ucides cordatus): Scale-Up and Comparative Studies

et al. 2021

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The growing interest in using low-cost methods that use natural sources makes the study of adsorption processes increasingly frequent and common. Thus, the use of uçá crab shell (Ucides cordatus) in the adsorption of reactive dye (reactive blue 222) was studied in two systems (S1 and S2) in a finite bath, with a scale-up of 12 times and considering different forms of agitation. The biosorbent material was previously characterized from FTIR and EDX spectroscopies, SEM, physical adsorption of N2, and point of zero charge. The kinetic study allowed modeling the experimental data and defining the equilibrium time for the S1 system as 400 min, and the S2 system as 360 min. The equilibrium adsorption capacities are 3.623 mg·g−1 (S1) and 4.191 mg·g−1 (S2). The pseudo-second-order (PSO) model best described the experimental data. The favorable multilayer adsorption was confirmed for the isothermal analysis, and the Freundlich and Sips models represented the experimental data of S1 and S2, respectively. The results obtained are positive indications of the scale-up of the S2 system.

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A hybrid adsorption membrane process for removal of dye from synthetic and actual wastewater

Cited by 91 publications

References 36 publications

TiO2/CTS/ATP Adsorbent and its Application in Adsorption-Ultrafiltration Process for Dye Wastewater Purification

TiO2/CTS/ATP Adsorbent and its Application in Adsorption-Ultrafiltration Process for Dye Wastewater Purification

Ultrasound-assisted membrane technologies for fouling control and performance improvement: A review

Adsorption of Reactive Dye onto Uçá Crab Shell (Ucides cordatus): Scale-Up and Comparative Studies

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