Treatment of landfill leachates by nanofiltration

Evaluating the efficiency of electrochemical process in removing COD and NH4-N from landfill leachate

“…Many studies have been carried out to find out suitable methods for treating the leachate [8,9]. Also, many treatment methods have been applied with various successful processes to treat leachate, such as aerobic biological [10] and anaerobic [11] biological processes, physico-chemical treatment [12,13], advanced oxidation process [14], and combined processes [6].…”

Preparation, Characterization, and Performance of Sulfated Chitosan/Polyacrylonitrile Composite Nanofiltration Membranes

“…The details of the setup and experimental procedure are given elsewhere. [11][12][13][14][15][16][17] The feed flow rate is kept at 15 L=min (LPM). Before performing the experiments, composite membranes are compacted for 2 hours at maximum pressure 12 atm used in the experiments, to avoid possible membrane compaction during the experimentation.…”

“…The NF membranes exhibit two distinctively interesting features, viz., the separation of different organic components present in aqueous solutions and the anion specific selective separation due to its potential of realizing Donnan effect with respect to different valency of anions. [1] Accordingly, NF has been widely used for water softening and other industry specific applications such as for resource recovery in food, pharmaceuticals, [2,3] paper, [4] common effluent treatment plants, [5] olive mill wastewater, [6] removal of contaminants such as sulfate, [7] removal of other heavy metal ions, [8][9][10][11][12][13][14][15][16][17] fermentation effluent treatment from wine factory, [18] etc. NF membranes are made of with a skin layer on the top of the microporous sublayer.…”

Treatment of stabilized landfill leachate in an integrated adsorption–fine-ultrafiltration system

“…RO can remove suspended and colloidal materials, dissolved solids and heavy metals, with an efficiency of 98-99% for organic and inorganic contaminants (Renou et al 2008). Despite its more open membrane structure, NF can also remove recalcitrant organic compounds and heavy metals (Chaudhari and Murthy 2010). This method removes particles with a molecular weight (MW) > 300 Da and inorganic substances via electrostatic interactions.…”