Results 31 to 40 of about 22,175 (310)

Testing the Underlying Chemical Principles of the Biotic Ligand Model (BLM) to Marine Copper Systems: Measuring Copper Speciation Using Fluorescence Quenching [PDF]

, 2017
Speciation of copper in marine systems strongly influences the ability of copper to cause toxicity. Natural organic matter (NOM) contains many binding sites which provides a protective effect on copper toxicity.
McGeer, James C., Smith, Scott, Tait, Tara N   +2 more
core   +2 more sources

Physical, chemical, and mineralogical attributes and organic fractions of biogenic aggregates of earthworms and toposequence of Inceptisol in semi-arid region

Ciência e Agrotecnologia, 2021
Earthworms are known to improve soil fertility by altering the physicochemical properties of soil. However, the changes in properties of biogenic aggregates (produced by earthworms) in regions with different vegetation covers and soils of Inceptisol ...
Eula Paula da Silva Santos, Flavia Giglianne Freitas Lima, Eulene Francisco da Silva, Diana Ferreira de Freitas, Eveline de Almeida Ferreira, Aline de Almeida Vasconcelos   +5 more
doaj   +1 more source

Mobility of antimony, arsenic and lead at a former mine, Glendinning, Scotland [PDF]

, 2015
Elevated concentrations of antimony (Sb), arsenic (As) and lead (Pb) in upland organic-rich soils have resulted from past Sb mining activities at Glendinning, southern Scotland. Transfer of these elements into soil porewaters was linked to the production
Farmer, John G., Graham, Margaret C., Macgregor, Kenneth, MacKinnon, Gillian   +3 more
core   +1 more source

Investigation of Analysis Methods For Detection of Humic Substances Within Leonardite [PDF]

International Journal of Economic and Environment Geology, 2018
Leonardite is a lignite form, which has undergone oxidation at high rate during the carbonization process. It has economic value because it contains humic substances at high rate.
Ömer Canıeren, Cengiz Karagüzel, Ahmet Aydın   +2 more
doaj  

Accurate separation and recovery of humic substances from landfill leachate concentrate by triethanolamine-based loose nanofiltration membranes

Advanced Membranes
The treatment of landfill leachate concentrate poses significant environmental challenges, particularly in the separation and recovery of valuable humic substances from high salt concentrations.
Shihang Wei, Anqi Fu, Huaying Li, Wenyi Dong, Feiyun Sun, Hongjie Wang, Ding Yu Xing, Yuexing Wang   +7 more
doaj   +1 more source

Efeito da substância húmica na germinação de sementes de Myracrodruon urundeuva Fr. All.

Revista Verde de Agroecologia e Desenvolvimento Sustentável, 2015
A As substâncias húmicas originam-se da oxidação e polimerização da matéria orgânica, apresentando elevadas massas moleculares e variados grupos funcionais.
A. R. Mota, R. J. da Silva, P. B. de Souza, L. M. Oliveira, A. C. M. Santos   +4 more
doaj   +1 more source

Preheating Behaviors of Iron Ore Pellets with Humic Substance-Based Binder

Metals, 2022
Humic substance-based binder (HB) has been found to be an effective substitution for bentonite in the production of iron ore pellets. In this study, it was found that the preheating time needed to be prolonged during the pelletization processing which is
Feiyu Meng, Yang Ou, Ke Li, Yongbin Yang, Qiang Zhong, Qian Li, Tao Jiang   +6 more
doaj   +1 more source

Scalable Polyelectrolyte Complex‐Based Sorbent With Hourly Sorption−Desorption Cycles for Multicyclic Atmospheric Water Harvesting in Arid Environments

Advanced Functional Materials, EarlyView.
A polyelectrolyte complex‐based sorbent is produced by scalable, environmentally benign aqueous phase inversion. Its porous, LiCl‐ and GO‐integrated architecture enables hourly adsorption−desorption cycles at low relative humidity (RH < 30%). A large‐scale prototype achieves multicyclic, solar‐driven atmospheric water harvesting of 1.37 L kg−1 day−1 ...
Seung‐Hwan Oh, Incheol Heo, Won Cheol Yoo, Soo‐Hyung Choi   +3 more
wiley   +1 more source

Variations in radiocarbon ages of various organic fractions in core sediments from Erhai Lake, SW China [PDF]

, 2003
Radiocarbon dating was performed for the extracted organic fractions (cellulose-rich and humic acid fractions of plant fragment; fulvic acid, humic acid and humin fractions of humus substance) and shell from core sediments of the Erhai Lake, SW China ...
Xu, S., Zheng, G.
core   +1 more source

Enhanced Li‐Ion Battery Performance with Hybrid MXene/GnR Electrodes: Heterojunctions and Engineered Architectures Supported by DFT Mechanistic Studies for Improved Rate Performance, Stability & Capacity

Advanced Functional Materials, EarlyView.
Lithium‐ion batteries (LIBs) remain central to energy storage but suffer from slow ion transport and degradation. Here, we present a binder‐free Ti3C2Tx MXene/GnR hybrid electrode with a porous 3D architecture formed via freeze casting. The structure enhances conductivity, ion transport, and stability, delivering 401 mAh/g, ∼97% efficiency, and 92 ...
Sara Mohseni Taromsari, Meysam Salari, Dipali Nayak, Saeed Habibpour, Ling Wei Hwang, Cristopher Carreiro, Carlos M. Da Silva, Aiping Yu, Chul B. Park, Cristina H. Amon, Hani E. Naguib   +10 more
wiley   +1 more source