Treatment of high-ammonia-nitrogen landfill leachate nanofiltration concentrate using an Fe-loaded Ni-foam-based electro-Fenton cathode

Recycling of nutrients from landfill leachate: A case study

“…Treatment can be challenging due to the presence of both organic and inorganic pollutants, including ammonia nitrogen. Treatment processes that can remove nitrogen include heating ( Schwarzwälder Sprovieri et al., 2020 ), filtration, oxidation ( Wang et al., 2020 ), adsorption ( Halim et al., 2010 ), and osmosis ( Iskander et al., 2018 ), among other techniques. One of the alternatives to removing nutrients in nitrogen-enriched wastewater and landfill leachate is through precipitation of struvite, which is obtained in the presence of magnesium and phosphorus ( Tansel et al., 2018 ).…”

Mechanism in chlorine‐enhanced Pd catalyst for H2O2in situ synthesis in electro‐Fenton system

“…[7][8][9][10][11] Electro-Fenton (EF), a well-studied electrochemical AOP, has captured researchers' attention because hydrogen peroxide (H 2 O 2 ) can be continuously in situ generated during this process. [12][13][14] There are two methods for the in situ generation of H 2 O 2 in the EF process: (1) H 2 O 2 is generated via a 2e À oxygen reduction pathway as shown in Reaction (1) on a carbonaceous cathode (activated carbon, 15 graphite-felt, 16 carbon felt, 17,18 and so on); (2) H 2 and O 2 are produced through the electrolysis of H 2 O, then as shown in Reaction (2), H 2 O 2 is directly synthesized from these gases on Pd 19,20 or other noble metals. After its synthesis, H 2 O 2 further decomposes into ˙OH and ˙OOH in the Fenton process as shown in Reactions (3) and (4).…”

Performance evaluation of a microbial fuel cell for resource recovery as struvite and bioelectricity generation from slaughterhouse wastewater

“…Hence, treating them to reduce their environmental impact is essential. [13][14][15] Meatprocessing industries and slaughterhouses consumes about 30% of fresh water. The increasing number of slaughterhouses lead to the higher amounts of slaughterhouse wastewater, 16 which is rich in the nutrients N and P, chemical oxygen demand (COD), biochemical oxygen demand and total dissolved solids.…”

“…These waste streams can become highly contaminated from fertilizer runoff, livestock discharge and the decomposition of organic solid waste. Hence, treating them to reduce their environmental impact is essential 13‐15 . Meat‐processing industries and slaughterhouses consumes about 30% of fresh water.…”