A Review of Landfill Leachate Treatment by Microalgae: Current Status and Future Directions

Solid waste generation has been projected to increase worldwide. Presently, the most applied methodology to dispose of solid waste is landfilling. However, these landfill sites, over time release a significant quantity of leachate, which can pose serious environmental issues, including contamination of water resources. There exist many physicochemical and biological landfill leachate treatment schemes with varying degrees of success. With an increasing focus on sustainability, there has been a demand for developing eco-friendly, green treatment schemes for landfill leachates with viable resource recovery and minimum environmental footprints. Microalgae-based techniques can be a potential candidate for such a treatment scenario. In this article, research on microalgae-based landfill leachate treatments reported in the last 15 years have been summarized and critically reviewed. The scale-up aspect of microalgae technology has been discussed, and the related critical factors have been elucidated. The article also analyzes the resource recovery potential for microalgal techniques with respect to leachate treatment and explores possible methodologies to minimize the environmental footprints of the microalgae-based treatment process. The future research potential in the area has been identified and discussed.

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Scale-up and cost analysis of a photo-Fenton system for sanitary landfill leachate treatment

Chemical Engineering Journal ◽

10.1016/j.cej.2015.07.063 ◽

2016 ◽

Vol 283 ◽

pp. 76-88 ◽

Cited By ~ 48

Author(s):

Tânia F.C.V. Silva ◽

Amélia Fonseca ◽

Isabel Saraiva ◽

Rui A.R. Boaventura ◽

Vítor J.P. Vilar

Keyword(s):

Cost Analysis ◽

Landfill Leachate ◽

Scale Up ◽

Sanitary Landfill ◽

Leachate Treatment ◽

Fenton System ◽

Sanitary Landfill Leachate

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Development of magnetic nano-geocomposite for groundwater and leachate treatment: A Landfill Management Perspective

10.5194/egusphere-egu2020-22425 ◽

2020 ◽

Author(s):

Nivedita Pradhan ◽

Manish Kumar

Keyword(s):

Landfill Leachate ◽

Emerging Contaminants ◽

High Surface ◽

High Surface Area ◽

Operating Conditions ◽

Future Research ◽

Leachate Treatment ◽

Freundlich Isotherms ◽

Landfill Management ◽

Physical And Chemical

<ul>Landfill leachate, a highly contaminated percolating effluent can cause a considerable threat to human as well as environmental health. We developed a novel nano composite using the polymer encapsulated magnetic geopolymer for efficient removal of multi contaminants (As, Zn, Fe, Co, Cu, Ni, Pb, F, NO 3 - , and PO 4 3- ) present in the landfill leachate and groundwater of the Pirana solid waste dumping site, Ahmedabad, Gujarat. A series of batch and column sorption experiments were carried out to find the best-operating conditions for optimum removal efficiency. Results revealed that in the range of 50-60% of multi-contaminant removal is possible using the newly developed adsorbent which has high surface area as well as mixed functional groups for the removal of both cationic (Zn, Fe, Co, Cu, Ni, and Pb) and anionic (F, NO 3 - , and PO 4 3- ) contaminants present in the leachate. Batch study shows that both physical and chemical sorption are equally operational and multilayer removal following the Freundlich isotherms predominantly. The batch test mimics the equilibrium condition only. The study recommends column study under different follow conditions using leachate and groundwater, followed by a regeneration study for its reusability and development of the field implementation schemes. The future research is required to address the decontamination of emerging contaminants like pharmaceuticals, pesticides and fertilizers, industrial additives and antibacterial agents.</ul>

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Constructed wetlands for municipal solid waste landfill leachate treatment. Final report

10.2172/10133187 ◽

1993 ◽

Cited By ~ 1

Author(s):

J. Peverly ◽

W.E. Sanford ◽

T.S. Steenhuis

Keyword(s):

Municipal Solid Waste ◽

Solid Waste ◽

Constructed Wetlands ◽

Landfill Leachate ◽

Final Report ◽

Leachate Treatment ◽

Municipal Solid Waste Landfill ◽

Waste Landfill

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The use of extended aeration and in-series surface-flow wetlands for landfill leachate treatment

Water Science & Technology ◽

10.2166/wst.1995.0133 ◽

1995 ◽

Vol 32 (3) ◽

pp. 119-128 ◽

Cited By ~ 6

Author(s):

Craig D. Martin ◽

Keith D. Johnson

Keyword(s):

Solid Waste ◽

Constructed Wetlands ◽

Landfill Leachate ◽

Oxygen Demand ◽

Surface Flow ◽

Fecal Coliforms ◽

Treatment Technique ◽

Leachate Treatment ◽

The Usa ◽

Minimum Criteria

Recently in the USA, the Solid Waste Industry has undergone specific changes in landfill regulations. The Federal Resource Conservation and Recovery Acts (RCRA); and EPA subtitle D regulations, as well as stringent State regulations, impose minimum criteria for municipal solid waste facilities in the areas of location, operation, groundwater monitoring, and leachate management. In conjunction with these State and Federal mandates the University of West Florida developed a leachate treatment technique utilizing extended aeration and surface-flow constructed wetlands. Sampling of water quality has occurred monthly since February 1992. Parameters examined include: Nitrogen (NH3,), Total Suspended Solids (TSS), Total Phosphate (TPO4), Total Organic Carbon (TOC), pH, Alkalinity, and Chlorides. Chemical Oxygen Demand (COD), Total and Fecal Coliforms, Priority Pollutant Metals, and limited organic analytes are sampled on a less frequent basis. Samples are collected at a raw leachate site (L0), primary aerated lagoon (L1), and 6 stations within the 1.1 hectare constructed wetland complex (S1; W1; W3; W5; W7; W9) and one sandfilter (SF) location. Results thus far indicate removal percentages of the tested analytes average between 64% and 99%. This data suggests various physical, microbiological and chemical processes occurring within the aerated lagoon and constructed wetlands can provide an effective alternative to standard techniques for landfill leachate treatment and disposal. The methods as described have proven to be ideal for the circumstances occurring at the Perdido Landfill.

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Leachate Treatment

Control and Treatment of Landfill Leachate for Sanitary Waste Disposal - Advances in Environmental Engineering and Green Technologies ◽

10.4018/978-1-4666-9610-5.ch016 ◽

2015 ◽

pp. 369-386 ◽

Cited By ~ 1

Author(s):

Irvan Dahlan

Keyword(s):

Solid Waste ◽

Constructed Wetlands ◽

Landfill Leachate ◽

Batch Reactor ◽

Asian Countries ◽

Leachate Treatment ◽

Sequence Batch Reactor ◽

Membrane Technologies ◽

European Side ◽

Very High

Landfilling is one of the most important methods for disposal of solid waste in many countries. One of the most obvious problems associated with the landfilling practice is the generation of leachate. This chapter reviews case studies on the on-site treatment of leachates using various technologies in selected European and Asian countries. It was shown that the generation of leachate varies widely in both quantity and quality in European and Asian countries. Biological treatment and membrane technology show very high efficiencies in treating leachate generated from Odayeri landfill (in European side of Turkey) and Komurcuoda landfill (at Asian side of Turkey). Leachates from Arpley landfill (UK) and Bukit Tagar landfill (Malaysia) were successfully treated using sequence batch reactor (SBR). Fairly good treatment efficiencies were obtained using constructed wetlands (CWs) in treating Gdansk-Szadolki landfill leachate in Poland. Furthermore, the use of coagulation, filtration and membrane technologies has been proven effectively in treating Nonthaburi landfill leachate in Thailand.

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