Membrane distillation against a pressure difference

Membrane distillation is an attractive technology for production of fresh water from seawater. The MemPower® concept, studied in this work, uses available heat (86 °C) to produce pressurized water (2.2 bar and 46 °C) by membrane distillation, which again can be used to power a turbine for co-production of electricity. We develop a non...

Pilot test Solar Driven Membrane Distillation for drinking water production at Robanda Tanzania: NWASH project result 2: Innovative Fluoride removal technology

Simultaneous production of high-quality water and electrical power from aqueous feedstock’s and waste heat by high-pressure membrane distillation

A new membrane distillation (MD) concept (MemPower) has been developed for the simultaneous production of high-quality water from various aqueous feedstocks with cogeneration of mechanical power (electricity). Driven by low-grade heat (waste, solar, geothermal, etc.) a pressurized distillate can be produced by operating TNO’s Memstill® process...

Development and pilot testing of full-scale membrane distillation modules for deployment of waste heat

Membrane distillation is an attractive technology for extracting fresh water from seawater. Newly developed modules have been used in pilot tests and bench scale tests to demonstrate the potential of producing excellent product water quality in a single step, little need for water pretreatment and a thermal energy requirement of approximately...

Integrated membrane distillation-crystallization: Process design and cost estimations for seawater treatment and fluxes of single salt solutions

The goal of this research is to design an integrated membrane distillation-crystallization (MDC) process for desalination of seawater with pure water and dry salts as the only products. The process is based on a combination of membrane distillation (MD) and osmotic distillation (OD) steps with integrated crystallization. In the first MD step...

In situ phenol removal from fed-batch fermentations of solvent tolerant Pseudomonas putida S12 by pertraction

In situ phenol pertraction with 1-octanol has been experimentally studied to improve the production of the model component phenol by a recombinant strain of Pseudomonas putida S12. When the phenol concentration in the reactor reaches 2mM, the cells in fermentations without phenol removal are inhibited in growth and phenol production. Growth and...

Memstill® - Low cost membrane distillation technology for seawater desalination

Despite widespread research and development efforts during the last 25 years, membrane distillation still is not an accepted process for seawater desalination. A consortium of nine parties is presently developing a modified air gap membrane distillation (AGMD) process, aiming at presenting a low-cost alternative for both large and small scale RO...

Terugwinning van water en energie uit ventilatielucht in de glastuinbouw met een membraan-absorptieproces; Eindrapport

Verbeterd ontwateringsproces ter voorkoming/beperking van pekellozingen in de voedingsmiddelenindustrie: concept 1

Water treatment in a Membrane-Assisted Crystallizer (MAC)

In many cases it is necessary to remove ions from aqueous streams because of environmental reasons or process demands. Crystallization is one of the available techniques for the removal of many unwanted ionic components from aqueous streams. The removal of ions by means of crystallization on foreign seeds offers technical, economical and...

Water softening in a Membrane-Assisted Crystallizer (MAC)

In many cases it is necessary to remove ions from aqueous streams because of environmental reasons or process demands. Crystallization is one of the available techniques for the removal of many unwanted ionic components from aqueous streams. The removal of ions by means of crystallization on foreign seeds offers technical, economical and...

Methods to improve flux during alcohol/water azeotrope separation by vapor permeation

Pervaporation and vapor permeation both offer interesting alternatives to distillation for the azeotropic dehydration of alcohols. Main reasons are considerable potential energy savings and their modular, flexible system configurations. In this paper various theoretical and practical advantages of vapor permeation compared to pervaporation are...