Effect Of pH on the complexation of U(II) with organic matter dissolved in resh waters

1994 ◽  
Vol 46 (4) ◽  
pp. 223-228
Author(s):  
Juan M. Antelo ◽  
Florencio Arce ◽  
Francisco J. Penedo ◽  
Rocio López
Keyword(s):  
Organic Matter ◽  
Effect Of Ph

Effect of pH and dissolved organic matter on the abundance of nirK and nirS denitrifiers in spruce forest soil

2010 ◽  
Vol 101 (1-3) ◽  
pp. 123-132 ◽  
Author(s):  
Jiří Bárta ◽  
Tereza Melichová ◽  
Daniel Vaněk ◽  
Tomáš Picek ◽  
Hana Šantrůčková
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Forest Soil ◽  
Spruce Forest ◽  
Effect Of Ph

Assessment of effect of pH, temperature and organic matter on zinc mobility in a hydromorphic soil

2015 ◽  
Vol 74 (4) ◽  
pp. 2967-2980 ◽  
Author(s):  
Rim Azouzi ◽  
Abdelkrim Charef ◽  
Ahmed Hichem Hamzaoui
Keyword(s):  
Organic Matter ◽  
Hydromorphic Soil ◽  
Effect Of Ph

scholarly journals Adsorption of glyphosate on clays and soils from Paraná State: effect of pH and competitive adsorption of phosphate

2007 ◽  
Vol 50 (3) ◽  
pp. 385-394 ◽  
Author(s):  
Lútecia Hiera da Cruz ◽  
Henrique de Santana ◽  
Cássia Thaïs Bussamra Vieira Zaia ◽  
Dimas Augusto Morozin Zaia
Keyword(s):  
Organic Matter ◽  
Ir Spectra ◽  
Surface Area ◽  
Competitive Adsorption ◽  
Bentonite Clay ◽  
Effect Of Ph ◽  
State Effect ◽  
Secondary Role ◽  
Ft Ir

This work showed that the adsorption of glyphosate (GPS) depends on surface area for clays and amount of clays and CEC for soils. Organic matter (OM) had a secondary role in the adsorption of GPS on soils. The adsorption of GPS on soils from Londrina and Floraí counties and clays (montmorillonite, kaolinite) decreased when pH increased, however, for bentonite clay and soil from Tibagi county was kept constant. For the soils, the competitive adsorption between GPS and phosphate showed that displace of GPS by phosphate was related to the amount of clays, CEC and pH. GPS was not easily displaced by phosphate on the clays. The FT-IR spectra of the soils and clays showed that soil from Londrina resembled kaolinite. Thus, this could explain the results of adsorption of GPS and the competitive adsorption between GPS and phosphate.

scholarly journals Effect of pH and time on the treatment by coagulation from slaughterhouse of the city of Rabat

2018 ◽  
Vol 149 ◽  
pp. 02091 ◽  
Author(s):  
Nisrine. Boughou ◽  
Imane. Majdy ◽  
Essediya. Cherkaoui ◽  
Mohamed. Khamar ◽  
Abderrahman. Nounah
Keyword(s):  
Waste Water ◽  
Organic Matter ◽  
Retention Time ◽  
Food Processing ◽  
Food Industry ◽  
Waste Water Treatment ◽  
Oxygen Demand ◽  
Essential Element ◽  
Effect Of Ph ◽  
The City

Water is an essential element in the agri-food industry. The resulting wastewater is often returned to the natural environment without prior treatment; which can be an important source of environmental pollution. Among these food processing industries, there are slaughterhouses that are classified as dangerous, unhealthy and inconvenient, so the treatment of their discharges is necessary before their spill. This article presents the results of the waste water treatment study of the Rabat slaughterhouse by coagulation-flocculation using ferric chloride and the effect of pH and retention time on the elimination of turbidity, Chemical oxygen demand (COD) and organic matter (OM). The results show that pH and retention time plays a major role in the elimination efficiency of these parameters. Thus, with a pH = 5.83, a significant reduction in COD and turbidity are observed after 90 min and 120 min of decantation.

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