Optimization of the process variables for landfill leachate treatment using Fenton based advanced oxidation technique

Mahtab, Mohd Salim; Islam, Dar Tafazul; Farooqi, Izharul Haq

doi:10.1016/j.jestch.2020.08.013

Cited by 46 publications

(23 citation statements)

References 63 publications

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Section: Research and Technologymentioning

confidence: 99%

“…The landfill is yet another approach for SWM; however, the generation of leachate is a significant drawback (Hereher et al, 2019;Mahtab et al, 2020). Advanced oxidation processes (AOPs) are an approach to remove bio-refractory and toxic component produced from leachate (Mahtab et al, 2020). AOPs efficiently mineralize the recalcitrant compounds into decomposable mixtures, preventing leachate spillage into the environment (Mahtab et al, 2020;Umamaheswari et al, 2020).…”

Section: Research and Technologymentioning

confidence: 99%

“…Advanced oxidation processes (AOPs) are an approach to remove bio-refractory and toxic component produced from leachate (Mahtab et al, 2020). AOPs efficiently mineralize the recalcitrant compounds into decomposable mixtures, preventing leachate spillage into the environment (Mahtab et al, 2020;Umamaheswari et al, 2020). Therefore, adopting such technology can minimize leachate runoff into the groundwater, streams, and rivers, thereby preventing soil and water pollution.…”

Section: Research and Technologymentioning

confidence: 99%

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Solid Waste Management in Indian Himalayan Region: Current Scenario, Resource Recovery, and Way Forward for Sustainable Development

et al. 2021

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With the growing population, solid waste management (SWM) is becoming a significant environmental challenge and an emerging issue, especially in the eco-sensitive Indian Himalayan region (IHR). Though IHR does not host high local inhabitants, growing tourist footfall in the IHR increases solid wastes significantly. The lack of appropriate SWM facilities has posed a serious threat to the mountain-dwelling communities. SWM is challenging in the highlands due to the remoteness, topographical configuration, increasing urbanization, and harsh climate compared to plain areas. Difficulty in managing SWM has led to improper disposal methods, like open dumping and open burning of waste, that are adversely affecting the fragile IHR ecosystem. Open dumping of unsegregated waste pollutes the freshwater streams, and burning releases major pollutants often linked to the glacier melt. Processes like composting, vermicomposting, and anaerobic digestion to treat biodegradable wastes are inefficient due to the regions' extreme cold conditions. IHR specific SWM rules were revised in 2016 to deal with the rising problem of SWM, providing detailed criteria for setting up solid waste treatment facilities and promoting waste-to-energy (WtE). Despite governments' effort to revise SWM; measures like proper collection, segregation, treatment, and solid waste disposal needs more attention in the IHR. Door-to-door collection, segregation at source, covered transportation, proper treatment, and disposal are the primary steps to resource recovery across the IHR. Approaches such as waste recycling, composting, anaerobic digestion, refuse-derived fuel (RDF), and gas recovery from landfills are essential for waste alteration into valuable products initiatives like 'ban on single-use plastic' and 'polluters to pay' have a potential role in proper SWM in the IHR. Research and technology, capacity building, mass awareness programs, and initiatives like ‘ban on single-use plastic’ and ‘polluters to pay’ have a potential role in proper SWM in the IHR. This review highlights the current status of waste generation, the current SWM practices, and SWM challenges in the IHR. The review also discusses the possible resource recovery from waste in the IHR, corrective measures introduced by the government specific to IHR and, the way forward for improved SWM for achieving sustainable development of the IHR.

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Section: Research and Technologymentioning

confidence: 99%

Section: Research and Technologymentioning

confidence: 99%

Section: Research and Technologymentioning

confidence: 99%

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Solid Waste Management in Indian Himalayan Region: Current Scenario, Resource Recovery, and Way Forward for Sustainable Development

et al. 2021

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“…Indirect anodic oxidation may also be mediated by electrogenerated oxidizing agents in the sample, such as hypochlorite, chlorine, ozone, or hydrogen peroxide [30]. As has been pointed out in the literature, the active chlorine removes N-NH 4 + first [19,33,34]. Next, if there is surplus content of active chlorine in the LLs, intensive oxidation of organic compounds takes place.…”

Section: Introductionmentioning

confidence: 96%

“…LLs are most often classified by age. LLs from new cells (1-2 years old) usually have higher concentrations of biodegradable contaminants (ratio of five-day Biochemical Oxygen Demand to Chemical Oxygen Demand, BOD 5 /COD) ratio is >0.5) due to the high concentration of volatile organics) [4,5]. LLs generated by older cells (>10 years old) are usually less prone to biological degradation with BOD 5 /COD < 0.3 (due to the high concentration of refractory organic matter) [6].…”

Section: Introductionmentioning

confidence: 99%

Kinetics of the Organic Compounds and Ammonium Nitrogen Electrochemical Oxidation in Landfill Leachates at Boron-Doped Diamond Anodes

et al. 2021

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Electrochemical oxidation (EO) of organic compounds and ammonium in the complex matrix of landfill leachates (LLs) was investigated using three different boron-doped diamond electrodes produced on silicon substrate (BDD/Si)(levels of boron doping [B]/[C] = 500, 10,000, and 15,000 ppm—0.5 k; 10 k, and 15 k, respectively) during 8-h tests. The LLs were collected from an old landfill in the Pomerania region (Northern Poland) and were characterized by a high concentration of N-NH4+ (2069 ± 103 mg·L−1), chemical oxygen demand (COD) (3608 ± 123 mg·L−1), high salinity (2690 ± 70 mg Cl−·L−1, 1353 ± 70 mg SO42−·L−1), and poor biodegradability. The experiments revealed that electrochemical oxidation of LLs using BDD 0.5 k and current density (j) = 100 mA·cm−2 was the most effective amongst those tested (C8h/C0: COD = 0.09 ± 0.14 mg·L−1, N-NH4+ = 0.39 ± 0.05 mg·L−1). COD removal fits the model of pseudo-first-order reactions and N-NH4+ removal in most cases follows second-order kinetics. The double increase in biodegradability index—to 0.22 ± 0.05 (BDD 0.5 k, j = 50 mA·cm−2) shows the potential application of EO prior biological treatment. Despite EO still being an energy consuming process, optimum conditions (COD removal > 70%) might be achieved after 4 h of treatment with an energy consumption of 200 kW·m−3 (BDD 0.5 k, j = 100 mA·cm−2).

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A hybrid process for leachate wastewater treatment: Evaporation and reverse osmosis/sequencing batch reactor

Bouchareb¹,

Işık

Özay

et al. 2022

Water Environment Research

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In this study, a hybrid process for leachate wastewater treatment including evaporation and reverse osmosis (RO) membrane or biological treatment systems was suggested. Experiments were performed on a real landfill leachate wastewater. The leachate was subjected to evaporation; as a result, a distillate was obtained containing less organic matter and less substantial amounts of other pollutants, as ammonium salts and total phenols were removed. Tests

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Optimization of the process variables for landfill leachate treatment using Fenton based advanced oxidation technique

Cited by 46 publications

References 63 publications

Solid Waste Management in Indian Himalayan Region: Current Scenario, Resource Recovery, and Way Forward for Sustainable Development

Solid Waste Management in Indian Himalayan Region: Current Scenario, Resource Recovery, and Way Forward for Sustainable Development

Kinetics of the Organic Compounds and Ammonium Nitrogen Electrochemical Oxidation in Landfill Leachates at Boron-Doped Diamond Anodes

A hybrid process for leachate wastewater treatment: Evaporation and reverse osmosis/sequencing batch reactor

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