Influence of pH and Industrial Activity on Total Zinc Concentrations in Agricultural Soils, Sewage Sludges, and Beach Sands: Relationship with Plant ( Saccharum officinarum ) Availability

2002 ◽  
Vol 68 (2) ◽  
pp. 224-229
Author(s):  
C. Terr�s ◽  
M. Navarro ◽  
F. Mart�n-Lagos ◽  
H. L�pez ◽  
M. C. L�pez ◽  
...  
Keyword(s):  
Agricultural Soils ◽  
Saccharum Officinarum ◽  
Industrial Activity ◽  
Sewage Sludges ◽  
Zinc Concentrations ◽  
Beach Sands ◽  
Influence Of Ph

scholarly journals Retention of the Antibiotic Cefuroxime onto Agricultural and Forest Soils

2021 ◽  
Vol 11 (10) ◽  
pp. 4663
Author(s):  
Raquel Cela-Dablanca ◽  
Carolina Nebot ◽  
Lucia Rodríguez López ◽  
David Ferández-Calviño ◽  
Manuel Arias-Estévez ◽  
...  
Keyword(s):  
Forest Soils ◽  
Linear Models ◽  
Agricultural Soils ◽  
Organic Matter Content ◽  
Matter Content ◽  
Batch Type ◽  
Exchangeable Ca ◽  
Influence Of Ph ◽  
Best Fit ◽  
Soil Colloids

Antibiotics in wastewater, sewage sludge, manures, and slurries constitute a risk for the environment when spread on soils. This work studies the adsorption and desorption of the antibiotic cefuroxime (CFX) in 23 agricultural and forest soils, using batch-type experiments. Our results show that the adsorption values were between 40.75 and 99.57% in the agricultural soils, while the range was lower (from 74.57 to 93.46%) in forest soils. Among the Freundlich, Langmuir, and Linear models, the Freundlich equation shows the best fit for the adsorption results. In addition, agricultural soils with higher pH are the ones that present the highest adsorption. Further confirmation of the influence of pH on adsorption is given by the fact that Freundlich’s KF parameter and the Linear model Kd parameter shows a positive correlation with pH and with the exchangeable Ca and Mg values, which are known to affect the charges of the soil colloids and the formation of cationic bridges between adsorbents and adsorbate. In addition, Freundlich’s n parameter shows a positive and significant correlation with the organic matter content, related to the high adsorption taking place on forest soils despite their pH < 5. Regarding desorption, in most cases, it is lower than 1%, which indicates that CFX is adsorbed in a rather irreversible way onto these soils. Overall, these results can be considered relevant regarding their potential impact on environmental quality and public health.

Effects of Sewage Sludges Contaminated with Polychlorinated Dibenzo-p-dioxins, Dibenzofurans, and Biphenyls on Agricultural Soils

1997 ◽  
Vol 31 (10) ◽  
pp. 2765-2771 ◽  
Author(s):  
Ethel Eljarrat ◽  
Josep Caixach ◽  
Josep Rivera
Keyword(s):  
Agricultural Soils ◽  
Sewage Sludges

scholarly journals Penerapan Metode Sonikasi terhadap Adsorpsi Fe(III) pada Zeolit Alam Teraktivasi

ALCHEMY ◽  
2016 ◽  
Vol 5 (2) ◽  
pp. 63
Author(s):  
Zuri Rismiarti ◽  
Yuyun Yuniati ◽  
Rokiy Alfanaar
Keyword(s):  
Heavy Metal ◽  
Reaction Rate ◽  
Operation Time ◽  
Industrial Activity ◽  
Fe Content ◽  
Short Operation Time ◽  
Potential Impact ◽  
Sonication Technique ◽  
Influence Of Ph

<p>Iron (III) (Fe (III)) is widely used in the industry such us water treatment, the sugar cane, the concrete industry and coal mining. Industrial activity using Fe(III) has potential impact to environmental pollution problems due to that industry produces Fe waste that one of hazardous waste. Fe content excess might toxic effect to human health and the environment. Zeolite as adsorbent has been evaluated extensively for Fe and other heavy metal. Sonication method has been widely developed in polymer preparation. The method is more effective in operation time because the reaction rate increased and also more efficient on the usage of chemical reagens. The optimization of reaction time, the ratio of Fe(III) with activated zeolite, the influence of pH, and temperature has been assessed for Fe(III) adsorption with an activated zeolite by sonication technique. The formation of Fe(III)-SCN complex assay was used for determination of Fe(III) adsorbed by the activated zeolite with using spectrophotometer. The results showed a relatively short operation time (15 minutes), at pH of 4, temperature of  30 °C with the ratio of 1:50 (weight/volume) for the activated zeolite and Fe(III). </p>

Sign in / Sign up

Export Citation Format

Share Document