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Introduction to Membrane Distillation and Its Application in Emerging Contaminants Removal

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New Trends in Emerging Environmental Contaminants

Part of the book series: Energy, Environment, and Sustainability ((ENENSU))

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Abstract

Emerging contaminants (ECs) have huge impacts on all living beings, and conventional treatment processes like coagulation, precipitation, and chlorination have limited capability for removal. So, a tertiary and combined treatment process is required. Alternative treatment technologies include adsorption, chemical treatment, and membrane filtration. However, the associated operating cost, ECs rejection, fouling propensity, and by-product formation are some of the drawbacks. Membrane distillation (MD) is one of the promising membrane technologies for emerging contaminants removal. In MD, The vapor pressure difference between the hot feed and cold permeate is a driving force. MD technology has some added advantages like low-pressure requirements, less fouling susceptibility, low-temperature requirements, and only vapor mass transfer, i.e., 100% non-volatile compounds retention. MD employs a low temperature and pressure so fouling is less compact and is easily cleanable. MD technology has been studied for desalination, hypersaline brine treatment, chemical separation and can potentially remove emerging contaminants. The MD technology does not require very high-quality heat; solar heat, waste heat, or cogeneration-based heat utilization is possible. This way, MD can be operated on renewable energy and becomes sustainable and carbon neutral. MD technology has also been integrated with other efficient treatment technologies like Forward Osmosis (FO), Reverse osmosis (RO), and Nanofiltration (NF), providing a leading edge compared to other treatment methods. This chapter elaborates on various available MD technologies, possible materials, configurations, operating parameters, and energy requirements. We have also highlighted future research trends and challenges for MD treatment technology’s sustainable and commercial application.

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Abbreviations

MD:

Membrane distillation

EP:

Emerging pollutants

EC:

Emerging contaminants

USEPA:

United States Environmental Protection Agency

EDHs:

Endocrine-disrupting hormones

PFOS:

Perfluorooctanesulfonic acid

PFOA:

Perfluorooctanoic acid

AO:

Advanced oxidation

ED:

Electrodialysis

DCMD:

Direct Contact MD

AGMD:

Air Gap MD

SGMD:

Sweeping Gas MD

VMD:

Vacuum MD

LEP:

Liquid Entry Pressure

NOM:

Natural Organic Matter

BR:

Biological reactor

FO:

Forward Osmosis

EMBR:

Enzymatic Membrane Bioreactor

ROS:

Reactive Oxygen Species

PPCP:

Pharmaceuticals and Personal Care Products

SV:

Semi-Volatile

NV:

Non-volatile

ED:

Electrodialysis

TrOCs:

Trace Organic Compounds

DBPs:

Disinfection by-products

PFPeA:

Perfluoropentanoic acid

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Acknowledgements

The corresponding author acknowledges the funding received from ISRO- IIT(B) SPACE TECHNOLOGY CELL (STC) for carrying out this work.

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Correspondence to Swatantra P. Singh .

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Misra, U., Nishad, V., P. Singh, S. (2022). Introduction to Membrane Distillation and Its Application in Emerging Contaminants Removal. In: P. Singh, S., Agarwal, A.K., Gupta, T., Maliyekkal, S.M. (eds) New Trends in Emerging Environmental Contaminants. Energy, Environment, and Sustainability. Springer, Singapore. https://doi.org/10.1007/978-981-16-8367-1_18

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