Results 71 to 80 of about 64,537 (313)

Chirality and the origin of atmospheric humic-like substances [PDF]

, 2010
Aerosol water extracts and atmospheric humic-like substances (HULIS) obtained from PM2.5-fraction aerosol samples collected in a rural/continental background environment and in an urban environment in spring and summer, and at a tropical site that was ...
Maenhaut, Willy, Majer, Z, Meszaros, T, Salma, I, Vass, E   +4 more
core   +3 more sources

Evaluating the Impact of Cellulose Nanocrystals on the Performance of Polycarbonate Thin‐Film Nanocomposite Membranes for Treating Oily Wastewater

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT A new type of thin‐film nanocomposite (TFN) membrane was synthesized by incorporating cellulose nanocrystals (CNCs) into a polyvinyl alcohol (PVA) top layer on a polycarbonate (PC) substrate via dip‐coating. The synthesized TFC and TFN membranes (PC/PVA TFC and PC/PVA‐CNC TFN membranes) were evaluated using contact angle measurement, field ...
Habib Etemadi, Naser Ghasemian, Homayun Khezraqa, Solmaz Tozihi, Seyed Mehdi Sajjadi, Omid Ahmadi   +5 more
wiley   +1 more source

Moringa oleifera lectin and binding affinity to humic acids : application to water treatment [PDF]

, 2007
Humic acids, natural organic matter, constitute a problem in water treatment; they react with chlorine forming undesirable disinfection byproducts.
Brito, A. G., Coelho, L. C. B. B., Cunha, M. G. C., Luz, Luciana A., Nogueira, R., Paiva, Patrícia M. G., Santos, Andréa F. S., Teixeira, J. A.   +7 more
core  

Mechanisms of goethite dissolution in the presence of desferrioxamine B and Suwannee River fulvic acid at pH 6.5 [PDF]

, 2013
Siderophores are Fe3+ specific low MW chelating ligands secreted by microorganisms in response to Fe stress. Low MW organic acids such as oxalate have been shown to enhance siderophore mediated dissolution of Fe3+ oxides.
Alvarez-Puebla, Angela G. Stewart, Borer, Brantley, Carrasco, Cervini-Silva, Cheah, Chin, Cocozza, Colnaghi Simionato, Cornell, Cornell, Cozar, Cramer, Dhungana, Domagal-Goldman, Dubbin, Edwards, Filius, Filius, Fu, Gan, Ghabbour, Haselwandter, Hay, Holmén, Holmén, Karen A. Hudson-Edwards, Kosmulski, Kraemer, Kraemer, Lasaga, Liermann, Nightingale, Pandeya, Powell, Prasad, Qu, Raymond, Reichard, Reichard, Ritchie, Schindler, Schwertmann, Sharma, Siebner-Freibach, Simanova, Sposito, Sposito, Stevenson, Stumm, Tatár, Tipping, Watteau, Weng, Weng, Whitnall, William E. Dubbin   +57 more
core   +1 more source

On artificial humic acids [PDF]

Soil and Plant Food, 1956
I. Absorption Spectra of Some Artificial Humic Acids It is a well known fact that numerous dark brown or black and amorphous substances cap be produced from organic compounds by purely chemical pro...
openaire   +1 more source

Sustainable Graphene Oxide–Intercalated Bentonite Composite for the Effective Removal of Imidacloprid From Water: Adsorption Performance, Isotherm, and Kinetics

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Water is a fundamental necessity for our existence, but its rapid contamination is causing devastating effects on the environment and health of living species worldwide. Adsorptive removal of pollutants is one of the popular water treatment techniques because of its simplicity, affordability, and the broad range of available adsorbents.
Priyanka Negi, Brij Bhushan, Arunima Nayak, Pallavi Singh   +3 more
wiley   +1 more source

Field corn yield in response to humic acids application in the absence or presence of liming and mineral fertilization

Semina: Ciências Agrárias, 2019
Corn cultivation continually demands new technologies, since average yields can still be increased. This study aimed to evaluate the response of high-yield corn to humic acids, isolated from organic manure compost, with or without the application of lime
Marihus Altoé Baldotto, Raphael Oliveira de Melo, Lilían Borges Baldotto   +2 more
doaj   +1 more source

Conversion of low-rank Kilyos coal to nitrogeneous fertilizers [PDF]

, 2009
The aim of this work is to convert the low-rank Kilyos coal to a material that could be used as a nitrogenous fertilizer. Incorporation of nitrogen into this Kilyos coal was accomplished by oxidative ammoniation, which was a two-step process involving ...
Dumanlı, Ahu Gümrah, Haklı, Özgül, Nalbant, Aslı, Okyay, Firuze, Yürüm, Yuda   +4 more
core  

Insights Into the Effect of Humic Acids Extraction From Coal on Hard Carbon Microstructure and Sodium Storage Properties

Carbon Energy, EarlyView.
This study employs a simple solid‐phase alkali‐oxygen oxidation (SAO) method to extract inherent components (humic acids) from coal. We successfully extracted yellow, brown, and black humic acids by adjusting the amount of alkali. Among them, brown humic acid extraction created abundant ultra‐micropores and closed pores, greatly enhancing sodium ...
Ruizhen Song, Yakun Tang, Xiaojun Lv, Jingjing Diao, Yue Zhang, Wenhai Zhang, Lang Liu, Limin Deng, Yuliang Cao   +8 more
wiley   +1 more source

Изследване възможностите на електромагнитна и коронна електростатична сепарации за обогатяване с хумусни субстанции на лигнит от мина „Станянци“

Почвознание, агрохимия и екология, 2011
Different methods of coal separation and beneficiation create conditions for increasing the content of extractable humic acids from coal. Usage of electromagnetic separation leads to reduction of total sulfur content below 1%.
Константин Митов, Тодорка Попова, Константин Чакалов, Валентин Савов, Гергана Ангелова   +4 more
doaj