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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. 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

3. 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

4. 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

5. 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

6. Microalgal lipids production and nutrients recovery from landfill leachate using membrane photobioreactor

Author:
Chang, Haixing; Fu, Qian; Zhong, Nianbing; Yang, Xin; Quan, Xuejun; Li, Shuo; Fu, Jingwei; Xiao, Chao
Source:
Bioresource technology 2019 v.277 pp. 18-26
ISSN:
0960-8524
Subject:
landfill leachates,   etc   ; algae culture; biomass; combustion; linolenic acid; microalgae; nutrients; phosphates; photobioreactors;     Show all 9 Subjects
Abstract:
... The aim of this work was to realize high-efficiency nutrients recovery from landfill leachate (LL) for microalgal lipids production. Negative effects of LL on microalgal lipid synthesis was revealed and a scalable membrane-based tubular photobioreactor (SM-PBR) was proposed to offset these negative effects. Microalgal biomass concentration was improved from 0 g/L in the traditional PBR to 2.13 g/L ...
DOI:
10.1016/j.biortech.2019.01.027

7. Heavy metals distribution and their bioavailability in earthworm assistant sludge treatment wetland

Author:
Chen, Zhongbing; Hu, Shanshan
Source:
Journal of hazardous materials 2019 v.366 pp. 615-623
ISSN:
0304-3894
Subject:
leachates,   etc   ; bioaccumulation factor; bioavailability; cadmium; earthworms; heavy metals; sludge; toxicity; wetlands;     Show all 9 Subjects
Abstract:
... Sludge treatment wetlands (STWs) have been used for sludge treatment in recent years, however, heavy metals (HMs) are one of the limiting factors for the final sludge application, and the fate of HMs in STWs are still not well studied. Therefore, six STWs with two plant species and earthworm addition were investigated to evaluate their effects on HMs distribution and bioavailability. The results s ...
DOI:
10.1016/j.jhazmat.2018.12.039

8. Bioavailable electron donors leached from leaves accelerate biodegradation of pyridine and quinoline

Author:
Lu, Qinyuan; Zhang, Chenyuan; Wang, Wenyi; Yuan, Biyue; Zhang, Yongming; Rittmann, Bruce E.
Source:
The Science of the total environment 2019 v.654 pp. 473-479
ISSN:
0048-9697
Subject:
leachates,   etc   ; Ginkgo biloba; Platanus orientalis; biodegradation; chemical oxygen demand; equations; leaves; oxalates; pyridines; quinoline; ultraviolet radiation;     Show all 11 Subjects
Abstract:
... Fallen leaves of Platanus orientalis and Ginkgo biloba linn were separately immersed in water to obtain leachates that were used as exogenous electron donors for accelerating pyridine and quinoline biodegradations. Leachate addition accelerated the pyridine removal rate by up to 4.4% and 3.6% and the quinoline removal rate by 9.5% and 11%. The rates increased further after the leachates were illum ...
DOI:
10.1016/j.scitotenv.2018.11.129

9. Acid-Generating Waste Rocks as Capillary Break Layers in Covers with Capillary Barrier Effects for Mine Site Reclamation

Author:
Larochelle, Chloé G.; Bussière, Bruno; Pabst, Thomas
Source:
Water, air, and soil pollution 2019 v.230 no.3 pp. 57
ISSN:
0049-6979
Subject:
leachates,   etc   ; business enterprises; drainage; mine tailings; monitoring; risk; rocks; volumetric water content; water quality; Quebec;     Show all 10 Subjects
Abstract:
... Tailings and waste rocks can be used to build covers with capillary barrier effects (CCBE) for the purposes of reclaiming acid-generating waste storage facilities while enhancing the value of the materials available on site. The efficiency of non-acid generating tailings, desulfurized tailings, and non-reactive waste rocks as cover materials was demonstrated in previous laboratory and field studie ...
DOI:
10.1007/s11270-019-4114-0

10. Effects of compost characteristics on nutrient retention and simultaneous pollutant immobilization and degradation during co-composting process

Author:
Fan, Hongyong; Liao, Jie; Abass, Olusegun K.; Liu, Lin; Huang, Xu; Wei, Lili; Li, Jie; Xie, Wei; Liu, Chaoxiang
Source:
Bioresource technology 2019 v.275 pp. 61-69
ISSN:
0960-8524
Subject:
leachates,   etc   ; composted manure; composting; liquids; metals; models; nutrient retention; organic matter; pollutants;     Show all 9 Subjects
Abstract:
... This study was conducted to examine the effects of controlled addition of liquid (LM) to solid (SM) manure compost using a volume-model technique on the co-composting of SM and LM, and further to investigate the major effects of bulking material sizes and LM types on the co-composting process and final compost characteristics. Results indicated that this volume-model technique played a critical ro ...
DOI:
10.1016/j.biortech.2018.12.049

11. Influence of high doses of antibiotics on anoxic-aerobic membrane bioreactor in treating solid waste leachate

Author:
Kaewmanee, Anekpracha; Chiemchaisri, Wilai; Chiemchaisri, Chart
Source:
International biodeterioration & biodegradation 2019 v.138 pp. 15-22
ISSN:
0964-8305
Subject:
leachates,   etc   ; adverse effects; antibiotics; biodegradation; membrane bioreactors; nitrites; norfloxacin; organic matter; sludge; solid wastes; sulfamethoxazole; trimethoprim;     Show all 12 Subjects
Abstract:
... This study aims to investigate the influence of high antibiotics doses on the efficiency of an anoxic-aerobic membrane bioreactor (ANX-AMBR) in treating solid waste leachate for one-year operation without sludge withdrawal. Two doses of a mixture of norfloxacin (NOR), trimethoprim (TRM), sulfamethoxazole (SMX) and tetracycline (TC), a total of 4 mg L−1 (1 mg L−1 each) and a total of 20 mg L−1 (5 m ...
DOI:
10.1016/j.ibiod.2018.12.011

12. Assessment of red mud as sorptive landfill liner for the retention of arsenic (V)

Author:
Rubinos, David A.; Spagnoli, Giovanni
Source:
Journal of environmental management 2019 v.232 pp. 271-285
ISSN:
0301-4797
Subject:
leachates,   etc   ; arsenic; bauxite; equations; landfills; pH; phosphates; sorption; sorption isotherms; toxicity; Spain;     Show all 11 Subjects
Abstract:
... The sorption of AsV on red mud (bauxite residue), produced in the ALCOA-San Cibrao factory (Spain), was assessed in view of its potential use as sorptive liner of landfills for the attenuation of As-rich leachates. The operating parameters evaluated, using batch-type procedures, comprised the effects of time, solution pH, AsV concentration (sorption isotherm) and presence of phosphate on the AsV s ...
DOI:
10.1016/j.jenvman.2018.09.041

13. Efficient step-feed partial nitrification, simultaneous Anammox and denitrification (SPNAD) equipped with real-time control parameters treating raw mature landfill leachate

Author:
Zhang, Fangzhai; Peng, Yongzhen; Wang, Shuying; Wang, Zhong; Jiang, Hao
Source:
Journal of hazardous materials 2019 v.364 pp. 163-172
ISSN:
0304-3894
Subject:
landfill leachates,   etc   ; Nitrosomonas; Thauera; ammonium; anaerobic ammonium oxidation; community structure; denitrification; microorganisms; nitrogen; pH; total nitrogen;     Show all 11 Subjects
Abstract:
... An innovative step-feed partial nitrification, simultaneous Anammox and denitrification (SPNAD), equipped with real-time control parameters, achieved efficient nitrogen removal from raw mature landfill leachate. The variables pH and ORP served as real time on-line parameters to flexibly control the durations of aerobic and anoxic. A nitrogen removal efficiency (NRE) of 98.7% and nitrogen removal r ...
DOI:
10.1016/j.jhazmat.2018.09.066

14. Ettringite and monosulfate formation to reduce alkalinity in reactions of alum-based water treatment residual with steel slag

Author:
Özkök, Enes; Davis, Allen P.; Aydilek, Ahmet H.
Source:
Waste management 2019 v.84 pp. 1-12
ISSN:
0956-053X
Subject:
leachates,   etc   ; alkalinity; aluminum; calcium; ions; models; neutralization; pH; risk; roads; slags; steel; waste management; water treatment;     Show all 14 Subjects
Abstract:
... Aged steel slag has a potential use as a highly durable aggregate in roadway construction; however, its high capacity for creating alkaline leachates (pH > 12.4) poses a severe environmental risk. In batch and column leach tests, 10% alum-based water treatment residual (WTR) addition to aged steel slag resulted in a 67% decrease in acid neutralizing capacity of steel slag and leachate alkalinity, ...
DOI:
10.1016/j.wasman.2018.11.018

15. Highly efficient fluoride extraction from simulant leachate of spent potlining via La-loaded chelating resin. An equilibrium study

Author:
Robshaw, Thomas; Tukra, Sudhir; Hammond, Deborah B.; Leggett, Graham J.; Ogden, Mark D.
Source:
Journal of hazardous materials 2019 v.361 pp. 200-209
ISSN:
0304-3894
Subject:
leachates,   etc   ; adsorption; defluoridation; hazardous waste; ions; lanthanum; leaching; pH; sodium fluoride; sorbents; spectral analysis;     Show all 11 Subjects
Abstract:
... Spent potlining (SPL) hazardous waste is a potentially valuable source of fluoride, which may be recovered through chemical leaching and adsorption with a selective sorbent. For this purpose, the commercially available chelating resin Purolite® S950+ was loaded with lanthanum ions, to create a novel ligand-exchange sorbent. The equilibrium fluoride uptake behaviour of the resin was thoroughly inve ...
DOI:
10.1016/j.jhazmat.2018.07.036

16. Zinc leaching behavior in semi-aerobic landfill

Author:
Hu, Lifang; Long, Yuyang
Source:
Environmental technology 2019 v.40 no.1 pp. 29-36
ISSN:
1479-487X
Subject:
leachates,   etc   ; air; environmental technology; heavy metals; landfills; leaching; monitoring; municipal solid waste; pollution; risk; zinc;     Show all 11 Subjects
Abstract:
... Municipal solid waste landfills require continuous monitoring because that the environmental change may trigger sudden release of heavy metals and need special care. In this research, three simulated landfills with different operation modes were used to investigate the behavior of Zn during the decomposition process. It is difficult to evaluate the effects of landfill operating modes on the releas ...
DOI:
10.1080/09593330.2017.1377293

17. An insight into the cytotoxicity, genotoxicity, and mutagenicity of smoked cigarette butt leachate by using Allium cepa as test system

Author:
Montalvão, Mateus Flores; Sampaio, Lorrana Lucas Gomes; Gomes, Huan Henrique Ferreira; Malafaia, Guilherme
Source:
Environmental science and pollution research international 2019 v.26 no.2 pp. 2013-2021
ISSN:
0944-1344
Subject:
leachates,   etc   ; Allium cepa; anaphase; chromosomes; cigarettes; cyclophosphamide; cytotoxicity; genotoxicity; metaphase; mitosis; mutagenicity; mutagens; nicotine; root meristems;     Show all 14 Subjects
Abstract:
... Smoked cigarette butt (SCB) discharged in the environment became an issue of unknown consequences for plants. Thus, we aim at assessing the impact of water containing SBC leachate on the meristem cells of Allium cepa roots. We defined the following experimental groups: negative control (water), positive control (cyclophosphamide); water with SCB leachate at environmental concentration (1.9 μg/L of ...
DOI:
10.1007/s11356-018-3731-2

18. Treatment of stabilized landfill leachate in an integrated adsorption–fine-ultrafiltration system

Author:
Kulikowska, D.; Zielińska, M.; Konopka, K.
Source:
International journal of environmental science and technology 2019 v.16 no.1 pp. 423-430
ISSN:
1735-1472
Subject:
landfill leachates,   etc   ; activated carbon; adsorption; ceramics; chemical oxygen demand; dissolved organic carbon;     Show all 6 Subjects
Abstract:
... This study investigated the feasibility of using an adsorption–fine-ultrafiltration system for removing organics from stabilized landfill leachate. For adsorption, Norit SX2 powdered activated carbon was used; the fine-ultrafiltration system was equipped with a ceramic membrane. Due to low organics removal efficiency in fine-ultrafiltration alone (series 1) (46.5% of chemical oxygen demand, 22.1% ...
DOI:
10.1007/s13762-018-1685-z

19. Semi-analytical solution to one-dimensional advective-dispersive-reactive transport equation using homotopy analysis method

Author:
Yu, Chuang; Wang, Hui; Fang, Dongfang; Ma, Jianjun; Cai, Xiaoqing; Yu, Xiaoniu
Source:
Journal of hydrology 2018 v.565 pp. 422-428
ISSN:
0022-1694
Subject:
landfill leachates,   etc   ; deformation; equations; hydrology; models; transportation;     Show all 6 Subjects
Abstract:
... The one-dimensional advective-dispersive-reactive transport equation has been widely applied to describe the transportation process of landfill leachate through liners or anti-seepage curtains. However, most existing methods solving this problem are limited to simple initial conditions. In order to eliminate these limitations, homotopy analysis method (HAM) is implemented to solve the contaminant ...
DOI:
10.1016/j.jhydrol.2018.08.041

20. Hydraulic performance and fouling characteristics of a membrane sequencing batch reactor (MSBR) for landfill leachate treatment under various operating conditions

Author:
Gkotsis, Petros; Tsilogeorgis, Jason; Zouboulis, Anastasios
Source:
Environmental science and pollution research international 2018 v.25 no.13 pp. 12274-12283
ISSN:
0944-1344
Subject:
landfill leachates,   etc   ; adsorption; filtration; fouling; sludge;     Show all 5 Subjects
Abstract:
... This study investigates the hydraulic performance and the fouling characteristics of a bench-scale membrane sequencing batch reactor (MSBR), treating mature landfill leachate under various time-based operating conditions. The MSBR system operated initially under a high-flux condition (Period 1) which resulted in a rapid trans-membrane pressure (TMP) rise due to intense fouling. Following the chara ...
DOI:
10.1007/s11356-017-0142-8