Results 21 to 30 of about 2,526 (154)

HEDP used as chelating agent during OpQP bleaching sequence of Acacia mangium kraft pulp [PDF]

BioResources, 2012
In an effort to resolve problems related to the difficulty of degradation of the chelating agents EDTA and DTPA, this study used a kind of water treatment agent, 1-hydroxy ethylidene-1,1-diphosphonic acid (HEDP), as the chelating agent in the OPQP ...
Jin-Jiang Pang, Zhong Liu, Lan-Feng Hui, Hua-Peng Jiang, Chuan-Ling Si   +4 more
doaj  

Chelate facilitated phytoextraction of Pb, Cd, and Zn from a lead–zinc mine contaminated soil by three accumulator plants

Scientific Reports, 2023
This study aims to evaluate the enhancement of phytoextraction of heavy metals (Pb, Cd, and Zn) by species Marrubium cuneatum, Stipa arabica, and Verbascum speciosum, through EDTA amendment.
Sadegh Hosseinniaee, Mohammad Jafari, Ali Tavili, Salman Zare, Giovanna Cappai   +4 more
doaj   +1 more source

New Method of Synthesis of Stable Zero Valent Iron Nanoparticles (Nzvi) by Chelating Agent Diethylene Triamine Penta Acetic Acid (DTPA) and Removal of Radioactive Uranium From Ground Water by using Iron Nanoparticle [PDF]

Journal of Nanostructures, 2012
Nowdays,  iron  nanoparticles  due  to  their  unique  characteristics  are used  in  all  of  sciences  and  technology.  These  nano  particles  due  to their  electrical, magnetic,  optical  and  catalytic  properties  and  having high  area  and ...
A. Akbari, F. Mohamadzadeh
doaj   +1 more source

Chelating agents to solubilize heavy metals from Oxisols contaminated by the addition of organic and inorganic residues Uso de quelantes na solubilização de metais pesados de Latossolos contaminados pela adição de resíduos orgânico e inorgânico

Scientia Agricola, 2009
Phytoremediation is an attractive technique for soils contaminated with heavy metals, especially in conjunction with chelating agents to assist metal phytoextraction. Nevertheless, their studies in Brazil are rare. Thus, the objective of the present work
Aline Renée Coscione, Cleide Aparecida de Abreu, Gláucia Cecília Gabrielli dos Santos   +2 more
doaj   +1 more source

Electrochemical removal of pyrite scale using green formulations

Scientific Reports, 2021
Pyrite scale formation is a critical problem in the hydrocarbon production industry; it affects the flow of hydrocarbon within the reservoir and the surface facilities.
Musa Ahmed, Ibnelwaleed A. Hussein, Abdulmujeeb T. Onawole, Mohammed A. Saad, Mazen Khaled   +4 more
doaj   +1 more source

Barium Sulfate Scale Removal at Low-Temperature

Geofluids, 2021
Precipitation of the scale in the oil and gas reservoirs, surface and subsurface equipment, and processing and production facilities is a big problem as it affects petroleum production.
Hany Gamal, Saad Al-Afnan, Salaheldin Elkatatny, Mohamed Bahgat   +3 more
doaj   +1 more source

Mechanism and Performance of Bioenzyme-Enhanced DTPA Chelator in Removing Barite Plugging

Zuanjingye yu wanjingye
When drilling low-temperature geothermal wells into high-pressure formations, the barite (BaSO4) in weighted drilling fluids, under the action of differential pressure, invade formation fractures and form insoluble filter cakes to block flow channels ...
Wenshi WANG, Hu WANG, Ni REN, Jie WANG, Jun CAI, Jihua CAI   +5 more
doaj   +1 more source

Preparation of a Novel Macroporous Silica-based Diglycolamide Derivative-impregnated Polymeric Composite and its Adsorption Mechanism for Rare Earth Metal Ions

Adsorption Science & Technology, 2007
Diethylenetriaminepentaacetic acid (DTPA), a multi-dentate acidic chelating agent containing five carboxyl and three amine groups all capable of protonation, is a pentabasic acid.
Anyun Zhang, Chenmei Mei, Yuezhou Wei, Mikio Kumagai   +3 more
doaj   +1 more source

Reassessment of Diethylenetriaminepentaacetic Acid (DTPA) as a Chelating Agent for Indium-111 Labeling of Polypeptides Using a Newly Synthesized Monoreactive DTPA Derivative

Journal of Medicinal Chemistry, 1996
Previous studies on indium-111 (111In) labeling of polypeptides and peptides using cyclic diethylenetriaminepentaacetic dianhydride (cDTPA) as a bifunctional chelating agent (BCA) have indicated that DTPA might be a useful BCA for 111In labeling of polypeptides at high specific activities when DTPA can be incorporated without inducing intra- or ...
Y, Arano, T, Uezono, H, Akizawa, M, Ono, K, Wakisaka, M, Nakayama, H, Sakahara, J, Konishi, A, Yokoyama   +8 more
openaire   +3 more sources

Ultra‐Radiostable Covalent Conformationally Interlocked Networks Enabling a Universal Radiometal‐Labeling Platform for Cancer Radioembolization

Advanced Science, EarlyView.
Conjugated poly(imide dioxime)‐based microspheres establish a radiometal coordination‐driven conformational interlocked network with ultra‐high radiostability. This platform enables low‐temperature, multi‐radionuclide labeling for SPECT/PET/MRI imaging and radionuclide therapy. Mechanistic insights from EXAFS and DFT reveal enhanced stability, while in
Xiao Xu, Zhenwen Zhao, Yangjie Wang, Zhigang Liu, Zhijie Liu, Xiaoling Li, Zhichen Mao, Lu Xu, Gan Lin, Gang Liu, Hongjuan Ma   +10 more
wiley   +1 more source