Chemical Assessment of Different Landfill Leachate in Nepal

Adhikari, Bikash; Parajuli, Anmol; Manandhar, Dinesh Raj; Khanal, Sanjay Nath

doi:10.1088/1755-1315/578/1/012022

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…These findings are in line with the research of Oumar et al [26], which revealed that landfill leachate has a pH value of 8.21. According to Adhikari and Khanal [27], the presence of methanogenic bacteria causes the pH value inside the landfill environment to vary depending on the age of the dump. As a result of these bacteria converting accumulated acids into methane and carbon dioxide, the rate of methane gas production will grow [28].…”

Section: Effect Of Leachate Ph On Metal Solubilitymentioning

confidence: 99%

Banana Peel Adsorbent to Reduce the Concentration of Lead and Cadmium Metal Pollution in Landfill Leachate

Milawati,

Adhitiyawarman,

Nusantara

2024

J. Kim. Sains Apl.

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Banana peels can be a valuable adsorbent for reducing heavy metals in water. This study investigated the effect of chemical activators on Nipah banana peel (Musa acuminata balbisiana) on their ability to reduce Pb and Cd metals in landfill leachate. Before the adsorption test, the banana peels were treated with a different chemical activator, including detergent, NaOH, KOH, and H3PO4. The results showed that H3PO4 adsorbs relatively high amounts of metals (Pb-75.800%, Cd-18.491%) in landfill leachate among these activators. FTIR analysis showed that banana peels treated with H3PO4 produced sharper carbonyl or carboxyl group peaks. These groups are very influential in the metal adsorption process. SEM-EDS analysis of the H3PO4-treated banana peels showed an increase in carbon and oxygen elements in the banana peels and changes in the pore surface that enhanced the adsorption process on Pb and Cd metals. From this study, banana peels activated with H3PO4 showed great potential to be developed into adsorbents to reduce heavy metal concentration.

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Section: Effect Of Leachate Ph On Metal Solubilitymentioning

confidence: 99%

Banana Peel Adsorbent to Reduce the Concentration of Lead and Cadmium Metal Pollution in Landfill Leachate

Milawati,

Adhitiyawarman,

Nusantara

2024

J. Kim. Sains Apl.

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“…The COD at the beginning of the measurement was very high but gradually decreased. This high COD was due to the presence of organic material in the waste, which broke down the organic compounds into smaller components dissolvable in the leachate [40]. Thus, the subsequent decrease in the COD suggests a short process of decomposition of the organic material [41].…”

Section: Biochemical Oxygen Demand (Bod)mentioning

confidence: 99%

The Use of multiple-soil layer bioreactors to boost decomposition of fresh leachate

2023

Global NEST: The International Journal

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<p>The amount of waste is increasing daily; however, the available land area is limited. This problem can be overcome by segregating waste and other alternatives by accelerating landfill stabilization using landfill bioreactors. In this study, anaerobic bioreactor A with daily use of water and the leachate, anaerobic bioreactor B with the addition of water and reuse of the leachate daily, and a control bioreactor with the addition of water were used. The parameters measured were the pH, temperature, humidity, chemical oxygen demand (COD), and biochemical oxygen demand (BOD) of the leachate. The reuse of the leachate and addition of water to the bioreactor accelerated waste degradation and caused high humidity. The average COD and BOD in each bioreactor on day 40 were stable. On day 45, the BOD (74.925 mg/L) was below 100 mg/L and the average COD (781 mg/L) was stable below 1000 mg/L. These results were for all bioreactors except for the control bioreactor, which only received water addition treatment; its COD value was below 1000 mg/L on day 50, at 989 mg/L. Waste decomposition was stabilized, with the BOD below 100 mg/L and the COD below 1000 mg/L.</p>

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“…Therefore, understanding and quantifying leachate contamination potential is essential in landfill operations and management. According to Adhikari et al (2020) and Abunama et al (2021), quantifying leachate contamination potential could be used for evaluation of the accuracy of landfill operation/exploitation and its impact on surrounding areas.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the landfill leachate quality using leachate pollution index (LPI) and technique for order preference by similarity to an ideal solution (TOPSIS)

Tałałaj,

Hajduk

2024

EiS

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Variability and diversity of landfill leachate cause difficulties in assessing the actual degree of threat to the environment and selecting an appropriate method of disposal or treatment. Therefore, quantifying leachate contamination potential is essential in landfill management and could be used to assess the accuracy of landfill operation and its impact on surrounding areas. The aim of this paper was to evaluate the performance of the Technique for Order Preference by Similarity to an Ideal Solution (TOPSIS) method and its suitability in determining leachate pollution potential in comparison to the Leachate Pollution Index (LPI) method. For this purpose, the quality of leachate from the landfill, collected four times a year from 2004 to 2021, was analysed. The following parameters were monitored: pH, EC, Pb, Cu, Zn, Cr, and Hg. On the basis of the measured parameters, the LPI and TOPSIS indexes were calculated. The obtained results indicated that the TOPSIS method is more sensitive and accurate in observing changes in leachate quality. It can be applied to any number of contaminant parameters without restrictions on scope, quantity, or their relative importance. It can also be used to compare the variations in leachate quality over time or to analyse differences in leachate quality among various landfill sites.

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Chemical Assessment of Different Landfill Leachate in Nepal

Cited by 5 publications

References 7 publications

Banana Peel Adsorbent to Reduce the Concentration of Lead and Cadmium Metal Pollution in Landfill Leachate

Banana Peel Adsorbent to Reduce the Concentration of Lead and Cadmium Metal Pollution in Landfill Leachate

The Use of multiple-soil layer bioreactors to boost decomposition of fresh leachate

Evaluating the landfill leachate quality using leachate pollution index (LPI) and technique for order preference by similarity to an ideal solution (TOPSIS)

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