Ammoniacal Nitrogen Stripping From Landfill Leachate at Open Horizontal Flow Reactors

Leite, Valderí Duarte; Paredes, Juliana M.R.; Sousa, Tales Abreu Tavares de; Lopes, Wilton Silva; Sousa, José Tavares de

doi:10.2175/106143017x15131012152942

Cited by 15 publications

(5 citation statements)

References 25 publications

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“…S4). It was worth noting that the pH of effluent in the anodic chamber remained unchanged (7 ± 0.4), which indicated that the effect of ammonia volatilization could be neglected 30 . Therefore, the mass balance and mechanisms in NH 4 + recovery will be researched in‐depth to illustrate the pathway to improve the performance of MDC.…”

Section: Resultsmentioning

confidence: 99%

Treatment and nutrient recovery of synthetic flowback water from shale gas extraction by air‐cathode (PMo/CB) microbial desalination cells

Yang

Zhang

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND: Due to the rapid development of shale gas extraction, the treatment of flowback water (FW) is becoming one major challenge because of its high saline, high ammonium (NH 4 +), high phosphorus (PO 4 3−), and complex organic contents. This study aimed to treat the high-salinity synthetic FW and recover nutrient using the air-cathode (PMo/CB) microbial desalination cells (MDCs). RESULTS: The removal efficiency of chemical oxygen demand (COD) exceeded 90% along with an electricity generation of 105.6 mW m −2. The highest removal and the recovery efficiency of 300 mg L −1 NH 4 + and 100 mg L −1 PO 4 3− were 65.6 ± 19.0% and 75.8 ± 32.0%, 52.6% and 57.8%, respectively. High-throughput sequencing analysis of anodic biofilms indicated that Firmicutes, Bacteroidetes, and Proteobacteria enriched at high influent NH 4 + concentration were responsible for producing electricity and degrading complex organics. Two denitrifying bacteria, Trichococcus and Marinobacterium, promoted the COD removal and also improved the electricity generation. Rhodococcus, a kind of heterotrophic nitrification-denitrification bacteria, contributed to nitrification in the cathodic chamber along with enhancing the denitrifying degradation of COD. Nitrincolaceae, capable of heterotrophic nitrate reduction to ammonium, were favorable to the recovery of NH 4 +. CONCLUSIONS: Overall results concluded that PMo/CB-MDC could be a promising alternative technique for the efficient treatment of FW and a pretreatment process for separating nutrient from the recovery chamber.

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Section: Resultsmentioning

confidence: 99%

Treatment and nutrient recovery of synthetic flowback water from shale gas extraction by air‐cathode (PMo/CB) microbial desalination cells

Yang

Zhang

et al. 2020

J of Chemical Tech & Biotech

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“…They found that the efficiency of ammonia removal was directly connected with the applied surface laod and that the amount of organic matter in the effluent. The main advantage of this process is the ineffectiveness of organic matter degradation and the release of NH3 into the atmosphere, even though NH 3 can be an environmental hazard [40]. The methods of air stripping, followed by a series of CF and adsorption, were used to treat landfill leachate.…”

Section: Air Strippingmentioning

confidence: 99%

Landfill Leachate: Review of various treatment approaches

Lokesh Sapkota,

Rajendra Joshi,

Anish Ghimire

et al. 2023

Jnl Innov. Engin. Educ.

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The burning issue of Solid waste management has become more prevalent in municipals of emerging nations as a combined effort of population growth, economic expansion, and rising living standards. In Nepal, 48.6% of municipalities choose to pile rubbish in landfills, while the remaining municipalities choose to burn their waste or pile it up along rivers. Leachate, a hazardous pollutant that harms soil, ground and surface water, human health, hygiene, and aquatic life, is a liquid produced from the bottom of solid waste disposal facilities.Leachate is treated via three processes: physical, chemical, and biological in landfills. The goal of the current paper is to review the leachate treatment options currently on the market. Instead of adopting a single treatment procedure, with physical and chemical process in combination of biological treatment has shown the effective performance. The onsite leachate solution is given an appropriate low cost option via land treatment of the landfill leachate. Cover soil can be thought of as a primary component of landfill operating strategy for separating trash from the environment and employed as a medium for the reduction of organic loads and specific toxic metals in leachate. This paper will be helpful in examining the many alternatives for treating landfill leachate.

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“…Leite et al [28] investigated and characterised the NH 3 -N stripping method at open horizontal flow reactors. The study involved the superficial load in three different phases phase 1 (650 kg N-NH 4 + ha −1 .day −1 ), phase 2 (750 kg N-NH 4 + ha −1 .day −1 ), and phase 3 (850 kg N-NH 4 + ha −1 .day −1 ).…”

Section: Ammoniacal Nitrogen (Nh 3 -N) Reduction By Air Strippingmentioning

confidence: 99%

Physicochemical Technique in Municipal Solid Waste (MSW) Landfill Leachate Remediation: A Review

Aziz

Ramli

Hung

2023

Water

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Leachate generation is among the main challenging issues that landfill operators must handle. Leachate is created when decomposed materials and rainwater pass through the waste. Leachate carries many harmful pollutants, with high concentrations of BOD, COD, colour, heavy metals, ammoniacal nitrogen (NH3-N), and other organic and inorganic pollutants. Among them, COD, colour, and NH3-N are difficult to be completely eliminated, especially with a single treatment. They should be handled by appropriate treatment facilities before being safely released into the environment. Leachate remediation varies based on its properties, the costs of operation and capital expenditures, as well as the rules and regulations. Up until now, much scientific and engineering attention was given to the development of comprehensive solutions to leachate-related issues. The solutions normally demand a multi-stage treatment, commonly in the form of biological, chemical, and physical sequences. This review paper discussed the use of contemporary techniques to remediate landfill leachate with an emphasis on concentrated COD, colour, and NH3-N levels with low biodegradability that is normally present in old landfill or dumping grounds in developing countries. A semi-aerobic type of landfill design was also discussed, as this concept is potentially sustainable compared to others. Some of the challenges and future prospects were also recommended, especially for the case of Malaysia. This may represent landfills or dumpsites in other developing countries with the same characteristics.

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Ammoniacal Nitrogen Stripping From Landfill Leachate at Open Horizontal Flow Reactors

Abstract: The ammonia nitrogen stripping process at open horizontal flow reactors was evaluated and is described in this paper. The ammonia came from landfill leachate. Superficial loads of 650 kgN-.ha-1.day-1 (phase 1), 750 kgN-.ha-1.day-1 (phase 2), and 850 kgN- Show more

Cited by 15 publications

References 25 publications

Treatment and nutrient recovery of synthetic flowback water from shale gas extraction by air‐cathode (PMo/CB) microbial desalination cells

Treatment and nutrient recovery of synthetic flowback water from shale gas extraction by air‐cathode (PMo/CB) microbial desalination cells

Landfill Leachate: Review of various treatment approaches

Physicochemical Technique in Municipal Solid Waste (MSW) Landfill Leachate Remediation: A Review

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