Nanostructured Ceramic Photocatalytic Membrane Modified with a Polymer Template for Textile Wastewater Treatment

Ahmad, Rizwan; Kim, Jin Kyu; Kim, Jong Hak; Kim, Jeong‐Hwan

doi:10.3390/app7121284

Cited by 34 publications

(11 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The main principle of the template method is to control the accumulation of ceramic particles through a regular and uniform pore former to prepare a porous material with an orderly and uniform pore structure and increase the porosity. Ahmad et al [ 116 ] used polymethacrylate (POEM) as a template and combined dipping-lifting and sol-gel methods to prepare TiO 2 /Al 2 O 3 composite ceramic membranes (membrane pore size of about 100 nm).…”

Section: Comparison Of Inorganic Ceramic and Cn Membranesmentioning

confidence: 99%

Nanocellulose Based Filtration Membrane in Industrial Waste Water Treatment: A Review

Liu

Shen

2021

Materials

View full text Add to dashboard Cite

In the field of industrial wastewater treatment, membrane separation technology, as an emerging separation technology, compared with traditional separation technology such as precipitation, adsorption, and ion exchange, has advantages in separation efficiency, low energy consumption, low cost, simple operation, and no secondary pollution. The application has been expanding in recent years, but membrane fouling and other problems have seriously restricted the development of membrane technology. Natural cellulose is one of the most abundant resources in nature. In addition, nanocellulose has characteristics of high strength and specific surface area, surface activity groups, as well as being pollution-free and renewable, giving it a very wide development prospect in many fields, including membrane separation technology. This paper reviews the current status of nanocellulose filtration membrane, combs the widespread types of nanocellulose and its derivatives, and summarizes the current application of cellulose in membrane separation. In addition, for the purpose of nanocellulose filtration membrane in wastewater treatment, nanocellulose membranes are divided into two categories according to the role in filtration membrane: the application of nanocellulose as membrane matrix material and as a modified additive in composite membrane in wastewater treatment. Finally, the advantages and disadvantages of inorganic ceramic filtrations and nanocellulose filtrations are compared, and the application trend of nanocellulose in the filtration membrane direction is summarized and discussed.

show abstract

Section: Comparison Of Inorganic Ceramic and Cn Membranesmentioning

confidence: 99%

Nanocellulose Based Filtration Membrane in Industrial Waste Water Treatment: A Review

Liu

Shen

2021

Materials

View full text Add to dashboard Cite

show abstract

“…The pure water permeability of the alumina support was 44.3 L m −2 h −1 bar −1 , but it decreased to 33.4, 37.7 and 8.3 L m −2 h −1 bar −1 for the T1, T2, and T3 membranes, respectively. The formation of a TiO 2 layer on the support should contribute to resistance against water flow through the membrane [25,28,39]. For the T3 membrane, the pure water flux decreased significantly compared with the other two ceramic membranes.…”

Section: Intrinstic Properties Of Membranesmentioning

confidence: 99%

Diethylene Glycol-Assisted Organized TiO2 Nanostructures for Photocatalytic Wastewater Treatment Ceramic Membranes

Ahmad

Kim

et al. 2019

Water

View full text Add to dashboard Cite

A high-performance photocatalytic ceramic membrane was developed by direct growth of a TiO2 structure on a macroporous alumina support using a hydrothermal method. The morphological nanostructure of TiO2 on the support was successfully controlled via the interaction between the TiO2 precursor and a capping agent, diethylene glycol (DEG). The growth of anatase TiO2 nanorods was observed both on the membrane surface and pore walls. The well-organized nanorods TiO2 reduced the perturbation of the alumina support, thus controlling the hydrolysis rate of the TiO2 precursor and reducing membrane fouling. However, a decrease in the amount of the DEG capping agent significantly reduced membrane permeability, owing to the formation of nonporous clusters of TiO2 on the support. Distribution of the organized TiO2 nanorods on the support was very effective for the improvement of the organic removal efficiency and antifouling under ultraviolet illumination. The TiO2 nanostructure associated with the reactive crystalline phase, rather than the amount of layered TiO2 formed on the support, which was found to be the key to controlling photocatalytic membrane reactivity. These experimental findings would provide a new approach for the development of efficacious photocatalytic membranes with improved performance for wastewater treatment.

show abstract

“…low temperature of 93.4 °C, and the organic matters with high molecular weight were tightly attached to the sludge, so a higher energy is required to improve the extraction efficiency. As is well known, nanomaterials have a large specific surface area and many defects, thus, they exhibit high surface adsorption and microwave absorption [15][16][17][18][19], which leads to the increase in temperature around the nanomaterials.…”

Section: Resultsmentioning

confidence: 99%

“…However, many organic matters with the characteristic of absorbing heating selectively cannot absorb the microwave energy, which generates poor degradation efficiency [16]. In order to improve the extraction of the organic matters from the sludge, we used the different additives into the sludge to enhance the interfacial interaction of the organic matters and sludge [17].…”

Section: Introductionmentioning

confidence: 99%

Investigation on Characteristics of Microwave Treatment of Organic Matter in Municipal Dewatered Sludge

Wang

Sun

et al. 2019

Applied Sciences

View full text Add to dashboard Cite

This study aimed to utilize a microwave technology to degrade active organic matters of the municipal dewatered sludge in a high-temperature environment. The effects of extraction agent, nanomaterial assistants, and microwave-absorbing agents and activating agents on the degradation efficiency were investigated. Dimethyl carbonate was used as the extraction agent. Nanostructured titanium oxide (TiO2) and zinc oxide (ZnO) exhibited effective assistance in the process of microwave treatment. We also developed a kind of microwave-absorbing agent, which was the sludge-based biological carbon. The sodium sulfate (Na2SO4), calcium hydroxide (Ca(OH)2), and magnesium chloride (MgCl2) were selected as activating agents to facilitate the organic matter discharging from the sludge. Through optimizing the experimental factors, it was confirmed that 0.1 wt% TiO2, 0.1 wt% ZnO, 2 wt% dimethyl carbonate, 10 wt% sludge-based biological carbon, 7.5 wt% Ca(OH)2, 0.5 wt% MgCl2, and 6 wt% Na2SO4 were the most appropriate addition amounts in the municipal dewatered sludge to make the organic matter decrease from 42.17% to 22.45%, and the moisture content reduce from 82.98% to 0.48% after the microwave treatment. By comparison, the organic matter degradation is almost zero, and the moisture content decreases to 8.69% without any additives. Moreover, the residual inert organic matter and sludge can be further solidified to lightweight construction materials by using liquid sodium silicate as the curing agent. The research provides a significant reference for the effective, fast, and low-cost treatment of the organic matter in the municipal sludge.

show abstract

Nanostructured Ceramic Photocatalytic Membrane Modified with a Polymer Template for Textile Wastewater Treatment

Cited by 34 publications

References 26 publications

Nanocellulose Based Filtration Membrane in Industrial Waste Water Treatment: A Review

Nanocellulose Based Filtration Membrane in Industrial Waste Water Treatment: A Review

Diethylene Glycol-Assisted Organized TiO2 Nanostructures for Photocatalytic Wastewater Treatment Ceramic Membranes

Investigation on Characteristics of Microwave Treatment of Organic Matter in Municipal Dewatered Sludge

Contact Info

Product

Resources

About