Resource recovery from landfill leachate using bioelectrochemical systems: Opportunities, challenges, and perspectives

Holistic sludge management through ozonation: A critical review

“…For example, microbial fuel cells (MFCs) recovered 80% of phosphorous from landfill leachate (Iskander et al, 2016). MFC has an anaerobic chamber, which contains an anodic electrode that receives electrons produced by anaerobic biodegradation of organic matter.…”

“…A salt bridge or membrane separates the anaerobic chamber from the aerobic chamber, which contains a cathodic electrode that receives the flow of electrons from the anode. Phosphorous was precipitated as MAP in the high pH zone of the anaerobic chamber (Iskander et al, 2016). Supercritical water oxidation (SCWO) involves treatments performed at temperature and pressure that are higher than a certain mixture's thermodynamic critical point (i.e., the endpoint of a phase equilibrium curve) (Stendahl & Jäfverström, 2004).…”

Bioremediation of agricultural solid waste leachates with diverse species of Cu (II) and Cd (II) by periphyton

“…Cu and Cd) from agricultural solid waste leachate, physical and chemical methods, such as evaporation and reverse osmosis, were the predominant techniques, (Di Palma et al, 2003), with electrochemical treatment (Iskander et al, 2016), photocatalysis (Fabbri et al, 2009), selective adsorption by activated carbon (Ahn et al, 2008) or biochar (Regmi et al, 2012) also being used. Nevertheless, most of these methods are costly in terms of maintenance and operation because special apparatus and reagents are required (Fedje et al, 2013).…”

“…Leachate generation from agricultural solid wastes, such as polluted soils and straws, is one of the main environmental problems, posing great threats to both surface water and groundwater (Degueurce et al, 2016;Iskander et al, 2016). Thus, many costeffective and environmentally friendly microbial measures have been developed to treat agricultural solid waste leachates (Trellu et al, 2016).…”

“…Thus, many costeffective and environmentally friendly microbial measures have been developed to treat agricultural solid waste leachates (Trellu et al, 2016). Generally, these techniques can be summarized into three categories: (i) degradation of solid organic wastes using fermentation under anaerobic or anoxic conditions (Degueurce et al, 2016); (ii) removal of solid wastes using a combined system involving anaerobic-aerobic processes (Shou-liang et al, 2008); (iii) removal or recovery of solid wastes using bioelectrochemical systems (Iskander et al, 2016).…”