Energy efficiency of direct contact membrane distillation

Ullah, Ruh; Khraisheh, Majeda; Esteves, Richard J Alan; McLeskey, James T.; Al‐Ghouti, Mohammad A.; Gad‐el‐Hak, Mohamed; Tafreshi, H. Vahedi

doi:10.1016/j.desal.2018.01.025

Cited by 132 publications

(48 citation statements)

References 98 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The results confirm that the feed temperature was the most effective operating parameter. This is in good agreement with the literature [29,30,31,32]. The highest investigated operating temperature in this study was 65 °C.…”

Section: Resultssupporting

confidence: 93%

“…It should be noted that the some of these studies have used the sucrose syrup as the feed sample. Among the MD configurations, the DCMD is the most investigated one for different applications, specifically desalination [32]. However, due to the presence of process liquids in both the feed and permeate channels, the pore wetting risk is considerable [33].…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Concentrating of Sugar Syrup in Bioethanol Production Using Sweeping Gas Membrane Distillation

Shirazi

Kargari

2019

Membranes

View full text Add to dashboard Cite

Membrane distillation (MD) is a relatively new and underdeveloped separation process which can be classified as a green technology. However, in order to investigate its dark points, sensitivity analysis and optimization studies are critical. In this work, a number of MD experiments were performed for concentrating glucose syrup using a sweeping gas membrane distillation (SGMD) process as a critical step in bioethanol production. The experimental design method was the Taguchi orthogonal array (an L9 orthogonal one) methodology. The experimental results showed the effects of various operating variables, including temperature (45, 55, and 65 °C), flow rate (200, 400, and 600 ml/min) and glucose concentration (10, 30, and 50 g/l) of the feed stream, as well as sweeping gas flow rate (4, 10, and 16 standard cubic feet per hour (SCFH)) on the permeate flux. The main effects of the operating variables were reported. An ANOVA analysis showed that the most and the least influenced variables were feed temperature and feed flow rate, each one with 62.1% and 6.1% contributions, respectively. The glucose rejection was measured at 99% for all experiments. Results indicated that the SGMD process could be considered as a versatile and clean process in the sugar concentration step of the bioethanol production.

show abstract

Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Concentrating of Sugar Syrup in Bioethanol Production Using Sweeping Gas Membrane Distillation

Shirazi

Kargari

2019

Membranes

View full text Add to dashboard Cite

show abstract

“…Solar collectors typically used to provide thermal energy to MD processes are flat plate collectors, evacuated tube collectors, parabolic concentrators, or salinity-gradient solar ponds. Solar ponds have very low thermal efficiency (up to 20%), and are prone to challenges such as salt transport across zones [176]. Pumps and other electrical devices use energy either supplied by the grid, known as the assisted way, or from solar PV collectors, known as the stand-alone way [170].…”

Section: Membrane Distillationmentioning

confidence: 99%

Solar powered desalination – Technology, energy and future outlook

2019

View full text Add to dashboard Cite

Growing water demands have led to rapidly increasing desalination installation capacity worldwide. In an attempt to lower carbon footprint resulting from high-energy consuming desalination processes, attention has shifted to using renewable energy sources to power desalination. With solar irradiation ample in regions that heavily rely on desalination, solar powered desalination provides a sustainable solution to meeting water needs. The compatibility of each desalination process with the solar technology is driven by whether the kind of energy needed is thermal or electrical, as well as its availability. With rapid advances in solar energy technologiesboth photovoltaic and solar thermal, there has also been growing interest in coupling solar energy with desalination, with a focus on improving energy efficiency. In this review, the most recent developments in photovoltaic powered reverse osmosis (PV-RO), solar thermal powered reverse osmosis (ST-RO) are discussed with respect to membrane materials, process configuration, energy recovery devices and energy storage. In addition, advances in new materials for solar powered membrane distillation (MD) and solar stills in the past two years have also been reviewed. Future outlook considers the use of hybrid renewable energy systems as well as solar powered forward osmosis and dewvaporation. Solar powered desalination systems have been analysed with emphasis on technological and energy consumption aspects.

show abstract

“…The mechanism of mass transfer for DCMD, LGMD, SGMD, and TSGMD is the same, due to direct contact of fluids with membrane at feed and permeate sides of MD module (Essalhi and Khayet, 2014), except for VMD, and AGMD and VA-AGMD, where vacuum and empty air gap exist at permeate side, respectively. The Knudsen, Molecular, and combined mechanisms for DCMD, LGMD, SGMD, and TSGMD, assuming that viscous flow is negligible, are expressed in Equations (36,37,38), respectively (Lagana et al, 2000;Ding et al, 2002;Srisurichan et al, 2006;Andrjesdóttir et al, 2013;Bouchrit et al, 2015;Shirazi et al, 2016;Ullah et al, 2018). The mass transfer mechanisms for VMD assumes that molecular diffusion is negligible and is described in Equations (39-41) ( Table 5).…”

Section: Mass Transport Mechanisms In MD Configurationsmentioning

confidence: 99%

Heat and Mass Transport in Modeling Membrane Distillation Configurations: A Review

Olatunji

Camacho

2018

Front. Energy Res.

View full text Add to dashboard Cite

Identification and mitigation of challenges associated with membrane distillation (MD) modeling are very crucial to the applicability of MD technology in the industry. Several research studies have been carried out on direct contact membrane distillation (DCMD) modeling because of its simplicity, while other MD configurations have gained little attention. Most studies conducted on MD modeling were achieved based on uniform membrane pore size and pore size distribution assumption. This study exploits the homogeneity of these assumptions to conduct a modeling review for temperature polarization (TP) and concentration polarization (CP), as they apply to MD configurations. TP and CP phenomena have been identified as two of the main challenges to advance MD modeling for further development of MD technology. Their impact are detailed in the heat and mass transfer mechanisms discussed. Thermal conductivity of common hydrophobic commercial membrane materials at different temperatures are presented in this study. The use of optimal operating flow rates, suitable membranes, and proper module design are recommended as viable solutions to reduce the effect of TP and CP on permeate flux decay.

show abstract

Energy efficiency of direct contact membrane distillation

Cited by 132 publications

References 98 publications

Concentrating of Sugar Syrup in Bioethanol Production Using Sweeping Gas Membrane Distillation

Concentrating of Sugar Syrup in Bioethanol Production Using Sweeping Gas Membrane Distillation

Solar powered desalination – Technology, energy and future outlook

Heat and Mass Transport in Modeling Membrane Distillation Configurations: A Review

Contact Info

Product

Resources

About