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1. Transient analytical solution for one-dimensional transport of organic contaminants through GM/GCL/SL composite liner

Author:
Feng, Shi-Jin; Peng, Ming-Qing; Chen, Zhang-Long; Chen, Hong-Xin
Source:
The Science of the total environment 2019 v.650 pp. 479-492
ISSN:
0048-9697
Subject:
leachates,   etc   ; adsorption; clay; porous media; soil;     Show all 5 Subjects
Abstract:
... Analytical solution for transport of organic contaminants through composite liner consisting of a geomembrane (GM), a geosynthetic clay liner (GCL), and a soil liner (SL) with finite thickness is presented. The transient diffusion-advection processes in the whole composite liner and adsorption in GCL and SL can be described by the present method. The method is successfully verified against analyti ...
DOI:
10.1016/j.scitotenv.2018.08.413

2. Municipal solid waste (MSW) landfill: A source of microplastics? -Evidence of microplastics in landfill leachate

Author:
He, Pinjing; Chen, Liyao; Shao, Liming; Zhang, Hua; Lü, Fan
Source:
Water research 2019 v.159 pp. 38-45
ISSN:
0043-1354
Subject:
landfill leachates,   etc   ; landfills; microplastics; municipal solid waste; polypropylenes;     Show all 5 Subjects
Abstract:
... Although landfill is suspected to be releasing microplastics to the environment, there is few empirical researches carried out. To clarify suspicions of landfills as potential sources of microplastics, twelve leachate samples from four active and two closed municipal solid waste landfills were investigated. Microplastics were found in all the landfill leachate samples. In total, seventeen differen ...
DOI:
10.1016/j.watres.2019.04.060

3. Ex situ simultaneous nitrification-denitrification and in situ denitrification process for the treatment of landfill leachates

Author:
Li, Jie; Wu, Beibei; Li, Qian; Zou, Yuzhu; Cheng, Zhaowen; Sun, Xiaojie; Xi, Beidou
Source:
Waste management 2019 v.88 pp. 301-308
ISSN:
0956-053X
Subject:
landfill leachates,   etc   ; bioreactors; denitrification; energy costs; landfills; nitrification; waste management;     Show all 7 Subjects
Abstract:
... The objective of this research was to investigate the ex situ simultaneous nitrification–denitrification (SND) and in situ denitrification process and to evaluate its application for treating landfill leachates at long-term operations. Based on the predicted contaminant concentrations, two sets of laboratory-scale bioreactor landfill systems (an ex situ nitrification and in situ denitrification bi ...
DOI:
10.1016/j.wasman.2019.03.057

4. Recent advances in nitrogen removal from landfill leachate using biological treatments – A review

Author:
Miao, Lei; Yang, Gangqing; Tao, Tao; Peng, Yongzhen
Source:
Journal of environmental management 2019 v.235 pp. 178-185
ISSN:
0301-4797
Subject:
landfill leachates,   etc   ; ammonia; anaerobic ammonium oxidation; landfills; nitrogen; wastewater;     Show all 6 Subjects
Abstract:
... Landfill leachate, generated from the wastes in a landfill, is a type of wastewater with high concentrations of ammonia and organics, causing a serious environmental pollution. Because of its complex and changing characteristics, it is difficult to remove nitrogen from landfill leachate economically and effectively. Hence, nitrogen removal is a significant research priority of landfill leachate tr ...
DOI:
10.1016/j.jenvman.2019.01.057

5. Iodine speciation in cementitious environments

Author:
Kaplan, Daniel I.; Xu, Chen; Li, Dien; Lin, Peng; Xing, Wei; Nichols, Ralph; Schwehr, Kathleen; Santschi, Peter H.
Source:
Applied geochemistry 2019 v.103 pp. 15-22
ISSN:
0883-2927
Subject:
leachates,   etc   ; geochemistry; iodine; organic carbon; risk; slags; waste disposal; wastes;     Show all 8 Subjects
Abstract:
... Iodine-129 is a key risk driver in most low-level waste cementitious waste repositories. Objectives of this study were to determine iodine speciation in cementitious materials with slag (Grout+slag) and without slag (Grout–slag) and its impact on iodine immobilization. Irrespective of which iodine species was amended to the aqueous phase, there were no significant differences in uptake-Kd values ( ...
DOI:
10.1016/j.apgeochem.2019.02.007

6. Comparison between Fenton and Fenton-like reactions for L-proline degradation

Author:
Rodríguez-Narváez, O. M.; Pérez, L. S.; Yee, N. G.; Peralta-Hernández, J. M.; Bandala, E. R.
Source:
International journal of environmental science and technology 2019 v.16 no.3 pp. 1515-1526
ISSN:
1735-1472
Subject:
leachates,   etc   ; cobalt; irradiation; oxidants; pH; proline; risk; toxicity; ultraviolet radiation;     Show all 9 Subjects
Abstract:
... Fe/H₂O₂ and Co/PMS reactions were compared for L-proline degradation under different initial pH values, various transition metal salt and oxidant agent concentrations, as well with and without irradiation. The Fenton reaction took 60 min to degrade 90% of the L-proline, whereas the Fenton-like reaction achieved the same degradation after only 15 min. The best conditions for the Fenton-like reactio ...
DOI:
10.1007/s13762-018-1764-1

7. Effect of hydraulic retention time on micropollutant biodegradation in activated sludge system augmented with acclimatized sludge treating low-micropollutants wastewater

Author:
Boonnorat, Jarungwit; Kanyatrakul, Alongkorn; Prakhongsak, Apichai; Honda, Ryo; Panichnumsin, Pornpan; Boonapatcharoen, Nimaradee
Source:
Chemosphere 2019 v.230 pp. 606-615
ISSN:
0045-6535
Subject:
landfill leachates,   etc   ; acclimation; activated sludge; biodegradation; bisphenol A; deet; diclofenac; operating costs; pollutants; wastewater;     Show all 10 Subjects
Abstract:
... This research investigates the effect of hydraulic retention time (HRT) on micropollutant biodegradation of two-stage activated sludge (AS) system augmented with acclimatized sludge treating low-micropollutants wastewater. The experimental wastewater was a mixture of landfill leachate and agriculture wastewater, and HRT was varied between 24, 18, and 12 h. The results showed that, under 24 h HRT, ...
DOI:
10.1016/j.chemosphere.2019.05.039

8. Pollution evaluation on the salt-marshes under the phosphogypsum stacks of Huelva due to deep leachates

Author:
Guerrero, José Luis; Gutiérrez-Álvarez, Isidoro; Mosqueda, Fernando; Olías, Manuel; García-Tenorio, Rafael; Bolívar, Juan Pedro
Source:
Chemosphere 2019 v.230 pp. 219-229
ISSN:
0045-6535
Subject:
leachates,   etc   ; acid mine drainage; ecosystems; estuaries; phosphogypsum; physicochemical properties; pollution; rivers; salt marshes; sediments; sulfides; Spain;     Show all 12 Subjects
Abstract:
... In the salth-marshes of the Tinto River (Huelva estuary, SW Spain), are stored in stacks around 100 Mt of PG, covering a surface of 1000 ha without any type of isolation, which produce an important impact in the surrounding environment. On the other hand, this ecosystem it is affected by acid mine drainage (AMD) from sulphide mines located upstream the Tinto River.The aim of this study is to evalu ...
DOI:
10.1016/j.chemosphere.2019.04.212

9. Food waste treatment with a leachate bed reactor: Effects of inoculum to substrate ratio and reactor design

Author:
Xiong, Ziyi; Hussain, Abid; Lee, Hyung-Sool
Source:
Bioresource technology 2019 v.285 pp. 121350
ISSN:
0960-8524
Subject:
leachates,   etc   ; biorefining; chemical oxygen demand; energy balance; food waste; hydrogen production; hydrolysis; inoculum; waste treatment;     Show all 9 Subjects
Abstract:
... This study evaluated the effects of different inoculum to substrate ratios (ISRs) (5, 10, 15%) on hydrolysis and acidogenesis of food waste in a conventional leachate bed reactor (LBR-C) and a novel fractionalized LBR (LBR-F). At ISR of 10%, LBR-C experienced clogging and thus the solid removal and VFA production reduced significantly. Without any clogging events at high ISR of 10%, LBR-F achieved ...
DOI:
10.1016/j.biortech.2019.121350

10. Characterization of mercury-reducing potential bacteria isolated from Keputih non-active sanitary landfill leachate, Surabaya, Indonesia under different saline conditions

Author:
Imron, Muhammad Fauzul; Kurniawan, Setyo Budi; Soegianto, Agoes
Source:
Journal of environmental management 2019 v.241 pp. 113-122
ISSN:
0301-4797
Subject:
landfill leachates,   etc   ; Pseudomonas aeruginosa; adsorbents; bacteria; bioremediation; landfills; mercury; minimum inhibitory concentration; Indonesia;     Show all 9 Subjects
Abstract:
... The objectives of this research were to identify the capability of bacteria isolated from a non-active sanitary landfill to remove mercury under different saline conditions and to understand the removal kinetics. The mercury concentrations used in the minimum inhibitory concentration (MIC) test were 0, 5, 10, 15 and 20 mg/L. The capability of one selected bacterium from the MIC test to remove merc ...
DOI:
10.1016/j.jenvman.2019.04.017

11. Effect of sodium concentration on mobilization and fate of trace metals in standard OECD soil

Author:
Pontoni, Ludovico; Race, Marco; van Hullebusch, Eric D.; Fabbricino, Massimiliano; Esposito, Giovanni; Pirozzi, Francesco
Source:
Environmental pollution 2019 v.250 pp. 839-848
ISSN:
0269-7491
Subject:
leachates,   etc   ; aluminum; cadmium; colloids; copper; irrigation water; leaching; nickel; organic matter; sodicity; sodium; topsoil; zinc;     Show all 13 Subjects
Abstract:
... The effect of different Na concentrations on the fate of trace metals (Cd, Cu, Ni, Zn) in standard OECD soil was evaluated by performing soil leaching column experiments. Five Na concentrations added in synthetic irrigation water (0, 1, 5, 10, 50 mM) were studied in order to evaluate the fate of the metals contained in both the irrigation water leachate and the soil layer. In all experiments, meta ...
DOI:
10.1016/j.envpol.2019.04.070

12. Effect of the leachate head on the key pollutant indicator in a municipal solid waste landfill barrier system

Author:
Shu, Shi; Zhu, Wei; Xu, Haoqing; Wang, Shengwei; Fan, Xihui; Wu, Silin; Shi, Jianyong; Song, Jie
Source:
Journal of environmental management 2019 v.239 pp. 262-270
ISSN:
0301-4797
Subject:
leachates,   etc   ; chemical oxygen demand; landfills; mathematical models; municipal solid waste; pollutants; China;     Show all 7 Subjects
Abstract:
... In previous studies of municipal solid waste (MSW) landfill barrier systems, chemical oxygen demand has been found to be the key pollutant indicator when estimating the breakthrough time for. However, the leachate head in a municipal solid waste landfill can be very high (>10 m in some Chinese landfills). The key pollutant indicator could be different at different leachate heads. The leachate head ...
DOI:
10.1016/j.jenvman.2019.03.065

13. Comprehensive assessment of the leachate quality and its pollution potential from six municipal waste dumpsites of India

Author:
Somani, Mohit; Datta, Manoj; Gupta, S.K.; Sreekrishnan, T.R.; Ramana, G.V.
Source:
Bioresource technology reports 2019 v.6 pp. 198-206
ISSN:
2589-014X
Subject:
leachates,   etc   ; alkalinity; chlorides; heavy metals; landfills; pollution; sulfates; total dissolved solids; wastes; water hardness; India;     Show all 11 Subjects
Abstract:
... In the present study, an assessment was carried out for the leachate characteristics from six major landfills of India. These landfills are located in Delhi, Hyderabad and Kadapa. The physicochemical parameters and heavy metals content of the leachate were analyzed. The total dissolved solids, hardness, alkalinity, sulfates and, chlorides in (mg/L) were found to be 15,000–50,000, 10,000–30,000, 10 ...
DOI:
10.1016/j.biteb.2019.03.003

14. Removal of 1,4-Dioxane in Water Using Specific Microbe Immobilization Cells

Author:
Chung, Jinwook; Lee, Gyuyoung; Chung, Seungjoon; Lee, Yong-Woo
Source:
Water, air, and soil pollution 2019 v.230 no.6 pp. 114
ISSN:
0049-6979
Subject:
landfill leachates,   etc   ; activated sludge; carbon; cost effectiveness; dioxane; oxidation; polyethylene glycol; solubility;     Show all 8 Subjects
Abstract:
... The purpose of this study was to completely remove low levels of 1,4-dioxane, a controlled substance with high solubility, low degradability, and high hazard level, from water using a specific microbe-immobilized carrier. A cell-entrapped carrier based on polyethylene glycol diacrylate was prepared using enriched culturing of Candidatus Saccharibacteria, using 1,4-dioxane as the only carbon source ...
DOI:
10.1007/s11270-019-4174-1

15. Sorption and leaching behavior of bithionol and levamisole in soils

Author:
Ma, Xuan; Liu, Xueping; Ding, Sanglan; Su, Shijun; Gan, Zhiwei
Source:
Chemosphere 2019 v.224 pp. 519-526
ISSN:
0045-6535
Subject:
leachates,   etc   ; adsorption; desorption; dissolved organic matter; hysteresis; laboratory experimentation; leaching; levamisole; soil; sorption isotherms;     Show all 10 Subjects
Abstract:
... The batch experiments were conducted to understand sorption process of bithionol (BIT) in yellow soil (YS) and red soil (RS), while column leaching experiments were performed to evaluate the leaching behavior of BIT and levamisole (LEV) in the tested soils. The adsorption and desorption data fitted well with the Freundlich isotherms (R2 ≥ 0.94). The distribution coefficient of BIT in the YS and RS ...
DOI:
10.1016/j.chemosphere.2019.02.170

16. A new simplified method to calculate breakthrough time of municipal solid waste landfill liners

Author:
Shu, Shi; Zhu, Wei; Shi, Jiangwei
Source:
Journal of cleaner production 2019 v.219 pp. 649-654
ISSN:
0959-6526
Subject:
landfill leachates,   etc   ; adsorption; advection; clay; landfills; municipal solid waste; pollutants; seepage;     Show all 8 Subjects
Abstract:
... Compacted clay liners and geomembranes are extensively used as bottom liners in municipal solid waste landfills, to minimize groundwater contamination due to the migration of landfill leachate. Seepage of leachate, however, can still transport pollutants in leachate through the bottom liner and cause environmental contamination. Design of a landfill site, therefore, requires estimation of the brea ...
DOI:
10.1016/j.jclepro.2019.02.050

17. Relationship between breakthrough pressure and contact angle for organo-silane treated coal fly ash

Author:
Feyyisa, Jenberu L.; Daniels, John L.; Pando, Miguel A.; Ogunro, Vincent O.
Source:
Environmental technology & innovation 2019 v.14 pp. 100332
ISSN:
2352-1864
Subject:
leachates,   etc   ; coal fly ash; contact angle; energy; equations; hydrophilicity; hydrophobicity; industrial byproducts; leaching; porosity; soil;     Show all 11 Subjects
Abstract:
... One method to minimize contaminant leaching from soil or industrial byproducts such as coal fly ash (CFA) is through engineered water repellency. Breakthrough pressure (BP) experiments were conducted for five CFA types modified using three organo-silane (OS) products at different mix ratios. Results confirm that CFA can be modified and made sufficiently water resistant (up to 10 m pressure head) t ...
DOI:
10.1016/j.eti.2019.100332

18. Properties of composts from household food waste produced in automatic composters

Author:
Kucbel, Marek; Raclavská, Helena; Růžičková, Jana; Švédová, Barbora; Sassmanová, Veronika; Drozdová, Jarmila; Raclavský, Konstantin; Juchelková, Dagmar
Source:
Journal of environmental management 2019 v.236 pp. 657-666
ISSN:
0301-4797
Subject:
leachates,   etc   ; biodegradability; composting; electrical conductivity; food waste; green waste; humification; landfills; residential areas; Czech Republic;     Show all 10 Subjects
Abstract:
... The minimization of landfill deposition of waste containing biological components represents a big problem, especially in built-up residential areas. The main problem of biologically degradable municipal waste is the quantity and composition of household waste which can have an important influence on decomposition processes already in collecting vessels. An amount of household waste produced in re ...
DOI:
10.1016/j.jenvman.2019.02.018

19. Anaerobic pyrite oxidation in a naturally occurring pyrite-rich sediment under preload surcharge

Author:
Karikari-Yeboah, O.; Skinner, W.; Addai-Mensah, J.
Source:
Environmental monitoring and assessment 2019 v.191 no.4 pp. 216
ISSN:
0167-6369
Subject:
leachates,   etc   ; acid mine drainage; acid sulfate soils; iron; manganese; oxidants; oxidation; oxygen; protons; pyrite; sediments; sulfates;     Show all 12 Subjects
Abstract:
... Pyrite undergoes oxidation when exposed to aqueous oxygen to produce acidic leachate with high concentrations of H⁺, SO₄²⁻, and Fe³⁺. The oxidation mechanism is currently ascribed to contact between the mineral and aqueous oxygen. Consequently, management of acidic leachate from acid sulfate soils and acid mine drainage is focused on the prevention of contact between the sediment and aqueous oxyge ...
DOI:
10.1007/s10661-019-7289-3

20. Comparison of leachate percolation and immersion using different inoculation strategies in thermophilic solid-state anaerobic digestion of pig urine and rice straw

Author:
Meng, Lingyu; Maruo, Koki; Xie, Li; Riya, Shohei; Terada, Akihiko; Hosomi, Masaaki
Source:
Bioresource technology 2019 v.277 pp. 216-220
ISSN:
0960-8524
Subject:
leachates,   etc   ; anaerobic digestion; inoculum; mass transfer; methane production; rice straw; slurries; swine; urine;     Show all 9 Subjects
Abstract:
... Heterogeneous distribution of substrate and microorganisms and low mass transfer limit methane production dramatically in solid-state anaerobic digestion (SS-AD). To overcome this challenge, this study determined the optimal inoculation strategy (complete premix/slurry application) for reusing solid digestate as inoculum and the optimal leachate circulation method (percolation/immersion) using bat ...
DOI:
10.1016/j.biortech.2019.01.011