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1. A low-cost in-situ bioremediation process for perchlorate contaminated aqueous phase

Author:
Jasmin Godwin Russel; Krishnakumar Bhaskaran
Source:
Journal of hazardous materials 2023 v.442 pp. 130035
ISSN:
0304-3894
Subject:
leachates,   etc   ; Serratia marcescens; anaerobic digestion; bioremediation; perchlorates; pollutants; vegetable residues;     Show all 7 Subjects
Abstract:
... Perchlorate is a known endocrine-disrupting micropollutant. The efficiency of a low-cost in-situ bio-remediation process for perchlorate-contaminated aqueous phase was evaluated in a bench-scale unit in this study. The two-stage process unit comprises an anaerobic leach bed unit (5.3 L) for generating leachate and an anaerobic filter bed unit (10 L) inoculated with an isolated perchlorate reducing ...
DOI:
10.1016/j.jhazmat.2022.130035

2. Leaching composition and associated microbial community of recycled concrete aggregate (RCA)

Author:
Maedeh Soleimanifar; Anuruddha Jayasuriya; Matthew P. Adams; Lucia Rodriguez-Freire
Source:
Journal of hazardous materials 2023 v.442 pp. 130048
ISSN:
0304-3894
Subject:
leachates,   etc   ; alkalinity; concrete; construction industry; microbial communities; pH; runoff; salt tolerance; transportation; water quality;     Show all 10 Subjects
Abstract:
... Recycled concrete aggregate (RCA) has been used as an alternative sustainable material in the construction industry, but RCA long-term environmental impacts are unknown. In this study, the bacterial enrichment potential to reduce the alkalinity of two different types of RCA was examined, from laboratory-produced concrete and from a stockpile of demolished concrete that had been in service in trans ...
DOI:
10.1016/j.jhazmat.2022.130048

3. Bioinspired construction of magnetic nano stirring rods with radially aligned dual mesopores and intrinsic rapid adsorption of palladium

Author:
Fan Wu; Hao Li; Yang Pan; Yonghui Sun; Jianming Pan
Source:
Journal of hazardous materials 2023 v.441 pp. 129917
ISSN:
0304-3894
Subject:
leachates,   etc   ; adsorption; aminoquinolines; capacitors; chelation; electronic wastes; ion exchange; magnetic fields; palladium; porous media;     Show all 10 Subjects
Abstract:
... Quick and precise recovery of palladium (Pd) from electronic waste remains a serious task, owing to the strong acid and complexity of chemical compounds in leachate. Here, bioinspired construction of magnetic nano stirring rod with radially aligned dual mesopores and abundant 8-aminoquinoline (MNSR-DM-AQ) is proposed for selective and rapid extraction of Pd(II) from highly acidic sample solutions. ...
DOI:
10.1016/j.jhazmat.2022.129917

4. Sulfate reduction behavior in pressure-bearing leachate saturated zone

Author:
Dongsheng Shen; Haomin Zhou; Zhiyuan Jin; Wenyi Yang; Manting Ci; Yuyang Long; Lifang Hu
Source:
Journal of environmental sciences (China) 2023 v.126 pp. 545-555
ISSN:
1001-0742
Subject:
leachates,   etc   ; ambient temperature; atmospheric pressure; community structure; disulfides; genes; hydrogen sulfide; microbial communities; oxidoreductases; sulfates; China;     Show all 11 Subjects
Abstract:
... Attention should be paid to the sulfate reduction behavior in a pressure-bearing leachate saturated zone. In this study, within the relative pressure range of 0–0.6 MPa, the ambient temperature with the highest sulfate reduction rate of 50°C was selected to explore the difference in sulfate reduction behavior in a pressure-bearing leachate saturated zone. The results showed that the sulfate reduct ...
DOI:
10.1016/j.jes.2022.04.032

5. Stepwise recycling of Fe, Cu, Zn and Ni from real electroplating sludge via coupled acidic leaching and hydrothermal and extraction routes

Author:
Zhang Yuxin; Su Ting; Chen Hongyu; Zhang Ying; Geng Zhi; Zhu Suiyi; Xie Xinfeng; Zhang Hong; Gao Yidi; Huo Yang
Source:
Environmental research 2023 v.216 pp. 114462
ISSN:
0013-9351
Subject:
leachates,   etc   ; copper sulfate; flocculants; gypsum; hematite; hydrolysis; industry; nanorods; nitrates; nitric acid; phosphates; phosphoric acid; pollution; research; sludge; solid wastes; sucrose; sulfides; wastewater;     Show all 19 Subjects
Abstract:
... Fe/S-bearing erdite flocculant has been proven to be effective in the precipitation of heavy metals from real electroplating wastewater, with the only drawback being the huge production of sludge. This sludge was rich in Fe/S/Zn/Cu/Ni and refractory to be recycled due to the extractant pollution by free Fe and the dissolution of sulphide. Herein, a multistep separation method was developed to diss ...
DOI:
10.1016/j.envres.2022.114462

6. Rapid conversion of alkaline bauxite residue through co-pyrolysis with waste biomass and its revegetation potential

Author:
Yujun Wu; Yufei Zhang; Qihou Li; Jun Jiang; Yifan Jiang; Shengguo Xue
Source:
Journal of environmental sciences (China) 2023 v.127 pp. 102-113
ISSN:
1001-0742
Subject:
leachates,   etc   ; Lolium; X-radiation; X-ray photoelectron spectroscopy; air; alkalinity; bacterial communities; bauxite; biomass; calcite; clay; community structure; dust; humification; kaolinite; land restoration; organic carbon; pH; plant growth; pyrolysis; sawdust; soil; soil formation; China;     Show all 24 Subjects
Abstract:
... The extreme alkalinity of bauxite residue (BR) leads to difficulty with its reuse. Alkaline leachate and dust generation during the stacking process can pollute surrounding soil, air and water. In this work, co-pyrolysis of bauxite residue and sawdust was applied to rapidly produce a soil-like matrix that met the conditions for plant growth as demonstrated by ryegrass pot experiments. The present ...
DOI:
10.1016/j.jes.2022.06.005

7. Diversity of resident plant communities could weaken their allelopathic resistance against alien and native invaders

Author:
Ling Yuan; Junmin Li; Mark van Kleunen
Source:
Biological invasions 2022 v.24 no.3 pp. 607-619
ISSN:
1387-3547
Subject:
leachates,   etc   ; allelopathy; germination;     Show all 3 Subjects
Abstract:
... Elton’s classic diversity-invasibility hypothesis posits that diversity of resident communities increases resistance against invaders. We tested whether the diversity-invasibility relationsip might be mediated by allelopathic effects of the resident species. In a large germination experiment, we exposed seeds of six alien and six native test species to leachates of one, three, six or twelve specie ...
DOI:
10.1007/s10530-021-02667-5

8. Antibiotics and antibiotic resistance genes in landfills: A review

Author:
Rui Zhang; Shu Yang; Yuwei An; Yangqing Wang; Yu Lei; Liyan Song
Source:
Science of the total environment 2022 v.806 pp. 150647
ISSN:
0048-9697
Subject:
leachates,   etc   ; antibiotic resistance; environment; landfills;     Show all 4 Subjects
Abstract:
... Landfill are important reservoirs of antibiotics and antibiotic resistance genes (ARGs). They harbor diverse contaminants, such as heavy metals and persistent organic chemicals, complex microbial consortia, and anaerobic degradation processes, which facilitate the occurrence, development, and transfer of ARGs and antibiotic resistant bacteria (ARB). The main concern is that antibiotics and develop ...
DOI:
10.1016/j.scitotenv.2021.150647

9. Selection of optimal aggregation function for the revised leachate pollution index (r-LPI)

Author:
Tribhuwan Singh Bisht; Dinesh Kumar; Babu J. Alappat
Source:
Environmental monitoring and assessment 2022 v.194 no.3 pp. 187
ISSN:
0167-6369
Subject:
landfill leachates,   etc   ; Delphi method; accountability;     Show all 3 Subjects
Abstract:
... A tool to quantify the pollution potential of leachate, termed the revised leachate pollution index (r-LPI), has been developed. It was developed using the fuzzy Delphi analytic hierarchy process (FDAHP). The formulation entails four major steps: parameter selection, weight calculation, normalization of parameters, and aggregation of the parameters. Eleven leachate parameters categorized into thre ...
DOI:
10.1007/s10661-022-09861-5

10. Environmental impacts and leachate analysis of waste rubber incorporated in construction and road materials: A review

Author:
Abbas Mohajerani; Halenur Kurmus; David Conti; Lucinda Cash; Adrian Semcesen; Mohammed Abdurahman; Md Tareq Rahman
Source:
Science of the total environment 2022 v.835 pp. 155269
ISSN:
0048-9697
Subject:
leachates,   etc   ; environmental assessment; leaves; rubber; tires; toxicity;     Show all 6 Subjects
Abstract:
... In recent years, the recycling of waste tyre rubber in construction and road materials has emerged as a potential innovative solution to the growing waste rubber tyre dilemma. However, to determine the feasibility of any recycling method, it is crucial to assess the potential environmental implications of the proposed method. The environmental conditions waste tyre rubber products are exposed to a ...
DOI:
10.1016/j.scitotenv.2022.155269

11. Preferential Extraction of Lithium from Spent Cathodes and the Regeneration of Layered Oxides for Li/Na-Ion Batteries

Author:
Xin Hu; Chunliu Xu; Xiaowei Li; Peng Zhang; Xiaohui Rong; Chunli Yang; Zelang Jian; Huizhou Liu; Yong-Sheng Hu; Junmei Zhao
Source:
ACS applied materials & interfaces 2022 v.14 no.21 pp. 24255-24264
ISSN:
1944-8252
Subject:
leachates,   etc   ; electrochemistry; ion exchange; lithium; stoichiometry; temperature;     Show all 6 Subjects
Abstract:
... The preferentially selective extraction of Li⁺ from spent layered transition metal oxide (LiMO₂, M = Ni, Co, Mn, etc.) cathodes has attracted extensive interest based on economic and recycling efficiency requirements. Presently, the efficient recycling of spent LiMO₂ is still challenging due to the element loss in multistep processes. Here, we developed a facile strategy to selectively extract Li⁺ ...
DOI:
10.1021/acsami.2c01526

12. A green and economical process for resource recovery from precious metals enriched residue of copper anode slime

Author:
Jinchan Xian; Nengwu Zhu; Wen Zhu; Jing Wang; Pingxiao Wu
Source:
Journal of cleaner production 2022 v.369 pp. 133341
ISSN:
0959-6526
Subject:
leachates,   etc   ; anodes; citric acid; glucose; phase transition;     Show all 5 Subjects
Abstract:
... The precious metals enriched residue of copper anode slime (PM-CAS) obtained from our previous study, creates favorable conditions for recycling resource. In this study, a green and economical process for resource recovery from PM-CAS is proposed. Results showed that 99.70% Ag and 98.65% Pd were successfully leached in 10 min by HNO₃-citric acid under optimized conditions with 99.81% Au retained i ...
DOI:
10.1016/j.jclepro.2022.133341

13. Distinguishing removal and regrowth potential of antibiotic resistance genes and antibiotic resistant bacteria on microplastics and in leachate after chlorination or Fenton oxidation

Author:
Jianhong Shi; Binghan Wang; Xunan Li; Yinglong Su; Dong Wu; Bing Xie
Source:
Journal of hazardous materials 2022 v.430 pp. 128432
ISSN:
0304-3894
Subject:
landfill leachates,   etc   ; antibiotic resistance; chlorination; microplastics; oxidation; regrowth;     Show all 6 Subjects
Abstract:
... The prevalence of antibiotic resistance, as well as microplastics (MPs) as vectors for antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs) has attracting growing attention. However, the fate of ARB/ARGs on MPs treated by chlorination and Fenton oxidation were poorly understood. Herein, the removal and regrowth of ARGs/ARB on MPs and in MPs-surrounding landfill leachate (an i ...
DOI:
10.1016/j.jhazmat.2022.128432

14. Evaluation of ionic species contribution in critical metal extraction: A case study of high-purity vanadium production

Author:
Wenting Jia; Jiawei Wen; Wenyi Yan; Pengge Ning; Hongbin Cao
Source:
Journal of cleaner production 2022 v.343 pp. 130967
ISSN:
0959-6526
Subject:
leachates,   etc   ; case studies; dominant species; supply chain; vanadium;     Show all 5 Subjects
Abstract:
... Critical metal sustainability is a worldwide issue whose extraction relies on hydrometallurgy mostly. The significance of metal ion species evolution in critical metal hydrometallurgy-extraction has got more and more attention. Here, the importance of the metal ion species during the whole vanadium recycling process has been evaluated quantitatively for the first time. Metal ion species as the key ...
DOI:
10.1016/j.jclepro.2022.130967

15. Investigation of metal mobility in gold and silver mine tailings by single-step and sequential extractions

Author:
Paramee Kumkrong; Eben Dy; Daniel D. Tyo; Cindy Jiang; Indu Gedara Pihilligawa; David Kingston; Patrick H. J. Mercier
Source:
Environmental monitoring and assessment 2022 v.194 no.6 pp. 423
ISSN:
0167-6369
Subject:
leachates,   etc   ; dominant species; geochemistry; gold; rain; silver; toxicity;     Show all 7 Subjects
Abstract:
... Metal leachate from mine tailings has the potential to release toxic metals into the surrounding environment. A single-step extraction procedure mimicking rainwater and a three-step BCR sequential extraction procedure (acid, reducing and oxidizing conditions) were applied to gold (GMT) and silver (SMT) mine tailings. Major (Al, Ca, Fe, Mg, and Mn) and trace metals were monitored to better understa ...
DOI:
10.1007/s10661-022-10054-3

16. Alkali emissions characterization in chemical looping combustion of wood, wood char, and straw fuels

Author:
Ivan Gogolev; Toni Pikkarainen; Juho Kauppinen; Markus Hurskainen; Anders Lyngfelt
Source:
Fuel processing technology 2022 v.237 pp. 107447
ISSN:
0378-3820
Subject:
leachates,   etc   ; combustion; ionization; oxygen; particle size; straw; thermodynamics; wood;     Show all 8 Subjects
Abstract:
... Chemical looping combustion of wood pellets (WP), wood char (WC), and straw pellets (SP) was conducted in a 60 kW CLC pilot with ilmenite and braunite oxygen carriers (OCs). Alkali emissions were investigated with impactor-based and surface ionization detector (SID) measurements. Particle size distributions for WP and WC fuels were dominated by coarse particles formed by refractory species. For SP ...
DOI:
10.1016/j.fuproc.2022.107447

17. Construction, renovation, and demolition waste in landfill: a review of waste characteristics, environmental impacts, and mitigation measures

Author:
Zhikun Chen; Qi Feng; Rengyu Yue; Zhi Chen; Osama Moselhi; Ahmed Soliman; Amin Hammad; Chunjiang An
Source:
Environmental science and pollution research 2022 v.29 no.31 pp. 46509-46526
ISSN:
0944-1344
Subject:
leachates,   etc   ; industrialization; landfills; pollution; research; urbanization; waste disposal; wastes;     Show all 8 Subjects
Abstract:
... With the increase in global population, industrialization, and urbanization, waste from construction, renovation, and demolition (CRD) activities has grown rapidly. There are some issues associated with the disposal of CRD waste in landfills. Depositing in landfills is still the main method for CRD waste disposal from the global perspective. The objective of this study is to comprehensively review ...
DOI:
10.1007/s11356-022-20479-5

18. Influence of leaf leachate of geranium on germination and seedling growth of wheat

Author:
P. R. Nale; A. S. Swami
Source:
BIOINFOLET 2022 v.19 no.1 pp. 44-45
ISSN:
0976-4755
Subject:
leachates,   etc   ; Geranium; germination; leaves; secondary metabolites; seedling growth; wheat;     Show all 7 Subjects
Abstract:
... Geranium is rich in secondary metabolites, and thus possess medicinal properties. An attempt was made during present investigation to study the effect of geranium leaf leachate on germination of wheat seeds. It was observe that and leaf leachate inhibited seedling growth. ...

19. Investigating the potential for microbially induced carbonate precipitation to treat mine waste

Author:
Dylan Proudfoot; Loran Brooks; Christopher H. Gammons; Edwin Barth; Diana Bless; Raja M. Nagisetty; Ellen G. Lauchnor
Source:
Journal of hazardous materials 2022 v.424 pp. 127490
ISSN:
0304-3894
Subject:
leachates,   etc   ; calcium carbonate; humidity; microscopy; pH; remediation; toxicity; wastes;     Show all 8 Subjects
Abstract:
... In this study, the feasibility of promoting microbially induced carbonate precipitation (MICP) in mine waste piles by using an environmental bacterial enrichment is explored, with goals to reduce metals and acid leaching. MICP has been explored for remediation applications and stabilization of mine waste. Here, we utilize a native bacterial enrichment to promote MICP on seven mine waste samples wi ...
DOI:
10.1016/j.jhazmat.2021.127490

20. Leaching of 1,2,4-triazole from commercial barley seeds coated with tebuconazole and prothioconazole

Author:
Christian Nyrop Albers; Ulla Elisabeth Bollmann; Nora Badawi; Anders Risbjerg Johnsen
Source:
Chemosphere 2022 v.286 pp. 131819
ISSN:
0045-6535
Subject:
leachates,   etc   ; European Union; barley; groundwater; insecticides; risk; soil; tebuconazole;     Show all 8 Subjects
Abstract:
... Seed dressing with fungicide or insecticide is a standard procedure for growing major crops, but very little is known about the leaching risk and the general fate of pesticides from coated seeds. Triazole fungicides are commonly used seed dressing fungicides and recently, there has been increasing concern that 1,2,4-triazole, a major degradation product of several triazole fungicides, may leach to ...
DOI:
10.1016/j.chemosphere.2021.131819