Atrazine behavior in an agricultural soil: adsorption–desorption, leaching, and bioaugmentation with Arthrobacter sp. strain AAC22

2021 ◽  
Author(s):  
Noelia Urseler ◽  
Romina Bachetti ◽  
Verónica Morgante ◽  
Elizabeth Agostini ◽  
Carolina Morgante
Keyword(s):  
Agricultural Soil ◽  
Soil Adsorption ◽  
Adsorption Desorption

scholarly journals Adsorption–desorption behavior of carbendazim by sewage sludge-derived biochar and its possible mechanism

RSC Advances ◽  
2019 ◽  
Vol 9 (60) ◽  
pp. 35209-35216 ◽  
Author(s):  
Tengda Ding ◽  
Tuo Huang ◽  
Zhenhua Wu ◽  
Wen Li ◽  
Kexin Guo ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Environmental Remediation ◽  
Agricultural Soil ◽  
Adsorption Desorption

Biochar application in agricultural soil for environmental remediation has received increasing attention, however, few studies are focused on sewage sludge based biochar.

Adsorption/desorption behavior and mechanisms of sulfadiazine and sulfamethoxazole in agricultural soil systems

2019 ◽  
Vol 186 ◽  
pp. 233-241 ◽  
Author(s):  
Shuangqing Hu ◽  
Yu Zhang ◽  
Genxiang Shen ◽  
Hongchang Zhang ◽  
Zhejun Yuan ◽  
...  
Keyword(s):  
Agricultural Soil ◽  
Soil Systems ◽  
Adsorption Desorption

Wide-range and accurate modeling of linear alkylbenzene sulfonate (LAS) adsorption/desorption on agricultural soil

Chemosphere ◽  
2015 ◽  
Vol 138 ◽  
pp. 148-155 ◽  
Author(s):  
B. Oliver-Rodríguez ◽  
A. Zafra-Gómez ◽  
M.S. Reis ◽  
B.P.M. Duarte ◽  
C. Verge ◽  
...  
Keyword(s):  
Agricultural Soil ◽  
Linear Alkylbenzene Sulfonate ◽  
Linear Alkylbenzene ◽  
Wide Range ◽  
Alkylbenzene Sulfonate ◽  
Adsorption Desorption

scholarly journals SORÇÃO/DESSORÇÃO E MINERALIZAÇÃO DO INSETICIDA ACEFATO EM SOLO

2004 ◽  
Vol 14 ◽  
Author(s):  
MARA MARCHETTI ◽  
LUIZ CARLOS LUCHINI
Keyword(s):  
Aqueous Solution ◽  
Degradation Kinetics ◽  
Scintillation Counting ◽  
Organic Carbon Content ◽  
Organophosphate Insecticide ◽  
Distribution Constant ◽  
Freundlich Equation ◽  
Soil Adsorption ◽  
Adsorption Desorption ◽  
Complete Process

Estudou-se a adsorção/dessorção e mineralização do inseticida organofosforado acefato aplicado em solo tropical (argissolo) da região de Campinas-SP (Brasil). Foram usadas técnicas radiométricas nas análises do solo, do ar e da solução aquosa quanto à presença de 14C-acefato no solo tratado. Isotermas de adsorção e dessorção foram obtidas tratando-se 1, 2 e 4 g de solo com 10 mL de solução aquosa de CaCl2 0,01 mol.L-1 com 7 diferentes concentrações de acefato. Após 24 h de agitação para atingir o equilíbrio solo/solução, a adsorção foi determinada nos extratos obtidos mediante leitura da atividade do 14C-acefato por contagem de cintilação em líquido. Os parâmetros, constante de adsorção/dessorção (K) e constante exponencial ( n) da equação de Freundlich foram obtidos mediante regressão linear, além da constante de distribuição (Kd) e do coeficiente de adsorção normalizado para conteúdo de carbono orgânico ( Koc). O estudo da mineralização do acefato no solo foi conduzido em frascos biométricos de Bartha, com 50 g de solo e 10 mL de KOH 0,2 mol.L-1 como solução de captura de 14CO2. Acompanhou-se a cinética da degradação por meio de dois experimentos com duração de 14 e 64 dias. Alíquotas da solução-armadilha e subamostras do solo, após combustão, foram analisadas por contagem de cintilação em líquido. Os resultados das isotermas de adsorção obtidas para o acefato revelaram que o composto é pouco retido em argissolo (as constantes Kf e Kd apresentaram valores menores que 5; Koc foi de 56). Os valores dos coeficientes de dessorção indicam processo lento e não-completo durante o período do experimento. O resultado da mineralização indicou que o acefato é facilmente degradado nos 10 primeiros dias, com cerca de 70% do inseticida desprendido na forma de 14CO2. Sua meia-vida no solo apresentou os valores de 18,9 e 1.386 dias. SORPTION/DESORPTION AND MINERALIZATION OF THE INSECTICIDE ACEPHATE IN THE SOIL Abstract The sorption/desorption and mineralization of organophosphate insecticide acephate applied in tropical soil (claysoil) of Campinas-SP region of Brazil was studied. Radioanalitic techniques were used in analysis of soil, air and aqueous solution to verify the presence of 14C-acephate in treated soil. Adsorption and desorption isotherms were obtained by treatment of 1, 2 and 4 g of soil with 10 mL of 0.01 mol.L-1 CaCl2 aqueous solution with 7 different concentrations of acephate. After 24 h agitation in order to reach equilibrium of soil/solution, the adsorption was determined in the extracts obtained by means of 14acephate activity by scintillation counting in the liquid. The parameters, adsorption/desorption constant ( K) and the exponential constant ( n) from Freundlich equation were obtained by linear regression, besides the distribution constant (Kd) and of the adsorption coefficient normalized for organic carbon content (Koc). The mineralization study of acephate in soil was conducted in biometric flasks of Bartha, with 50 g of soil and 10 mL of KOH 0.2 mol.L-1 as capture solution of 14CO2. The degradation kinetics was followed by two experiments of 14 and 64 days. Trapping solutions aliquots and sub samples of soil, after combustion, were analyzed by scintillation counting in the liquid. The results of adsorption isotherms obtained for acephate revealed that the compound is little retained in claysoil (the constants Kf and Kd showed values less than 5; the Koc was of 56). The desorption coefficient values indicated a slow and not complete process during the experiment period. The mineralization result showed that acephate is easily degraded in the 10th first days, with approximately 70% mineralization of the insecticide to 14CO2. Its half life in soil presented values of 18.9 and 1.386 days.

Effects of aging process on adsorption–desorption and bioavailability of fomesafen in an agricultural soil amended with rice hull biochar

2017 ◽  
Vol 56 ◽  
pp. 180-191 ◽  
Author(s):  
Mahdi Safaei Khorram ◽  
Dunli Lin ◽  
Qian Zhang ◽  
Yuan Zheng ◽  
Hua Fang ◽  
...  
Keyword(s):  
Agricultural Soil ◽  
Aging Process ◽  
Rice Hull ◽  
Effects Of Aging ◽  
Adsorption Desorption
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