scholarly journals Soil Buffering Capacity Can Be Used To Optimize Biostimulation of Psychrotrophic Hydrocarbon Remediation

2021 ◽  
Author(s):  
Steven D. Mamet ◽  
Amy Jimmo ◽  
Alexandra Conway ◽  
Aram Teymurazyan ◽  
Alizera Talebitaher ◽  
...  
Keyword(s):  
Buffering Capacity ◽  
Soil Buffering

Responses of soil buffering capacity to acid treatment in three typical subtropical forests

2016 ◽  
Vol 563-564 ◽  
pp. 1068-1077 ◽  
Author(s):  
Jun Jiang ◽  
Ying-Ping Wang ◽  
Mengxiao Yu ◽  
Kun Li ◽  
Yijing Shao ◽  
...  
Keyword(s):  
Acid Treatment ◽  
Buffering Capacity ◽  
Subtropical Forests ◽  
Soil Buffering

scholarly journals Effects of phytolithic rice-straw biochar, soil buffering capacity and pH on silicon bioavailability

2019 ◽  
Vol 438 (1-2) ◽  
pp. 187-203 ◽  
Author(s):  
Zimin Li ◽  
Dácil Unzué-Belmonte ◽  
Jean-Thomas Cornelis ◽  
Charles Vander Linden ◽  
Eric Struyf ◽  
...  
Keyword(s):  
Rice Straw ◽  
Buffering Capacity ◽  
Rice Straw Biochar ◽  
Soil Buffering

scholarly journals ECOLOGICAL MONITORING OF UKRAINIAN AGROLANDSCAPE AS BASIS FOR ITS OPTIMIZATION AND EFFECTIVE USE

2019 ◽  
pp. 231-244
Keyword(s):  
Nature Reserve ◽  
Arable Land ◽  
Ecological Monitoring ◽  
Buffering Capacity ◽  
Integrated System ◽  
Structural Elements ◽  
Degraded Land ◽  
Technological Support ◽  
Soil Buffering ◽  
Effective Use

The article substantiates the necessity of conducting complex ecological monitoring of agrolandscapes due to the ecologically groundless use of the land, insufficient technical and technological support, implementation of ineffective investment and innovative economic and technological solutions, disturbance of the balance of agrolandscapes through their significant plowing, consolidation of the soil, deterioration of the ratio of arable land and ecology -stabilization lands and nature reserve fund, inefficient implementation of ecological and the Emerald Network, destruction of soil (soil buffering capacity decrease), growing areas of degraded land. A scientifically-based methodology for improving environmental monitoring of agro-landscapes of Ukraine’s territory, their optimization and effective use is proposed. The stages and specifics of carrying out of complex ecological monitoring of various kinds of agro-landscapes, their functional-structural elements, main directions and parameters are presented. The necessity of carrying out of the proposed integrated system of the agro-landscapes ecological monitoring on the territory and creation of regional information and consultation centers on agro-ecological issues has been proved.

Divergent Responses of Soil Buffering Capacity to Long-Term N Deposition in Three Typical Tropical Forests with Different Land-Use History

2015 ◽  
Vol 49 (7) ◽  
pp. 4072-4080 ◽  
Author(s):  
Xiankai Lu ◽  
Qinggong Mao ◽  
Jiangming Mo ◽  
Frank S. Gilliam ◽  
Guoyi Zhou ◽  
...  
Keyword(s):  
Land Use ◽  
Tropical Forests ◽  
N Deposition ◽  
Buffering Capacity ◽  
Land Use History ◽  
Soil Buffering

scholarly journals Nitrogen, Phosphorus, and Potassium Adsorption and Desorption Improvement and Soil Buffering Capacity Using Clinoptilolite Zeolite

Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 379
Author(s):  
Perumal Palanivell ◽  
Osumanu Haruna Ahmed ◽  
Latifah Omar ◽  
Nik Muhamad Abdul Majid
Keyword(s):  
Chemical Properties ◽  
Buffering Capacity ◽  
Phosphorus Adsorption ◽  
Adsorption And Desorption ◽  
Ph Buffering ◽  
Clinoptilolite Zeolite ◽  
Phosphorus And Potassium ◽  
Soil Buffering ◽  
Nitrogen Phosphorus ◽  
Ph Buffering Capacity

The physical and chemical properties of clinoptilolite zeolite can be used to enhance soil nutrient availability for optimum crop use. Amending nitrogen, phosphorus, and potassium fertilizers with clinoptilolite zeolite could create a pool of negative charges to retain and release nutrients timely for crop use. Thus, we used clinoptilolite zeolite to enhance Typic Paleudults sorption (adsorption and desorption) of nitrogen, phosphorus, potassium, and this soil’s pH buffering capacity. The treatments evaluated were: (i) 250 g soil alone, (ii) 20 g clinoptilolite zeolite alone, (iii) 250 g soil + 20 g clinoptilolite zeolite, (iv) 250 g soil + 40 g clinoptilolite zeolite, and (v) 250 g soil + 60 g clinoptilolite zeolite. Clinoptilolite zeolite increased soil nitrogen and potassium adsorption, nitrogen desorption, and soil pH. Moreover, ability of the soil to resist drastic change in pH (pH buffering capacity) was improved. Additionally, phosphorus adsorption and desorption of phosphorus and potassium were reduced. Higher potassium adsorption with lower potassium desorption suggests that the clinoptilolite zeolite sorbs potassium effectively. The clinoptilolite zeolite nitrogen, phosphorus, and potassium contributed to the reduction in the adsorption these nutrients. The clinoptilolite zeolite improved nitrogen, phosphorus, and potassium availability and soil buffering capacity to prevent these nutrients from being fixed or lost through for example, leaching. Therefore, clinoptilolite zeolite application could contribute to improved use of nitrogen, phosphorus, and potassium fertilizers to prevent soil, air, and water pollution. Additionally, our intervention could improve nitrogen, phosphorus, and potassium use efficiency.

scholarly journals The Influnece of Peat Layer on Hidrogen and Aluminium Concentration Originating from the Substratum Sulphidic Materials

2013 ◽  
Vol 17 (3) ◽  
pp. 197-202
Author(s):  
Arifin Fahmi Fahmi ◽  
Bostang Radjagukguk ◽  
Benito Heru Purwanto ◽  
Eko Hanudin Hanudin
Keyword(s):  
Soil Acidity ◽  
Peat Soil ◽  
Dry Season ◽  
Buffering Capacity ◽  
Peat Layer ◽  
Wet Season ◽  
Aluminium Concentration ◽  
Metal Elements ◽  
Exchangeable Al ◽  
Soil Buffering

Much of peatland in Indonesia has sulphidic materials as substratum. Soil acidity and metal elements in peatlandmay originate from the sulphidic materials which occur underneath of the peat layer. Peat soil buffering capacity andchelating ability of the peat materials regulate the soil acidity and metal solubility in the peatland. The study wasaimed to examine the influence of peat thickness and land hydrological conditions on the concentrations ofexchangeable aluminium (Al) and hidrogen (H) in the peatland. The study was carried out on peaty acid sulphatesoil, deep peat, moderate peat and shallow peat. Exchangeable Al and H were observed in the wet season, transitionfrom wet to dry season and dry season. The results showed that exchangeables of Al and H were mainly originatedfrom sulphidic material which were occured underneath of the peat layer. Peat layer had an important role on thesolubility of Al and H in the peatland. Peat thickness had influence on exchangeable-Al and H, 50 cm of the peatthickness (shallow peat) was the critical for peat function to reduce the Al and H solubility in the peatland. Hydrologicalcondition factor did not influence on the solubility of Al and H.Keywords: Aluminium; hydrogen; peatland; sulphidic materials[How to Cite: Fahmi A, B Radjagukguk, B Heru Purwanto and E Hanudin. 2012. The Influnece of Peat Layer on Hidrogen and Aluminium Concentration Originating from the Substratum Sulphidic Materials. J Trop Soils, 17 (3): 197-202. doi: 10.5400/jts.2012.17.3.197][Permalink/DOI: www.dx.doi.org/10.5400/jts.2012.17.3.197]

scholarly journals Availability of a soluble phosphorus source applied to soil samples with different acidicity levels

2010 ◽  
Vol 34 (4) ◽  
pp. 1126-1136 ◽  
Author(s):  
Ricardo Almeida Viégas ◽  
Roberto Ferreira Novais ◽  
Fernanda Schulthais
Keyword(s):  
Plant Growth ◽  
Soil Acidity ◽  
P Uptake ◽  
Buffering Capacity ◽  
Soil Samples ◽  
P Availability ◽  
Test Range ◽  
Ph Values ◽  
Soil Buffering ◽  
Bray 1

Considerations on the interactions of P in the soil-plant system have a long history, but are still topical and not yet satisfactorily understood. One concern is the effect of liming before or after application of soluble sources on the crop yield and efficiency of available P under these conditions. The aim of this study was to evaluate the effect of soil acidity on availability of P from a soluble source, based on plant growth and chemical extractants. Nine soil samples were incubated with a dose of 200 mg kg-1 P in soil with different levels of previously adjusted acidity (pH H2O 4.5; 5.0; 5.5; 6.0 and 6.5) and compared to soils without P application. After 40 days of soil incubation with a P source, each treatment was limed again so that all pH values were adjusted to 6.5 and then sorghum was planted. After the first and second liming the P levels were determined by the extractants Mehlich-1, Bray-1 and Resin, and the fractionated inorganic P forms. In general, the different acidity levels did not influence the P availability measured by plant growth and P uptake at the studied P dose. For some soils however these values increased or decreased according to the initial soil pH (from 4.5 to 6.5). Plant growth, P uptake and P extractable by Mehlich-1 and Bray-1 were significantly correlated, unlike resin-extractable P, at pH values raised to 6.5. These latter correlations were however significant before the second liming. The P contents extracted by Mehlich-1 and Bray-1 were significantly correlated with each other in the entire test range of soil acidity, even after adjusting pH to 6.5, besides depending on the soil buffering capacity for P. Resin was also sensitive to the properties that express the soil buffering capacity for P, but less clearly than Mehlich-1 and Bray-1. The application of triple superphosphate tended to increase the levels of P-Al, P-Fe and P-Ca and the highest P levels extracted by Bray-1 were due to a higher occurrence of P-Al and P-Fe in the soils.

Remediation of Soils Contaminated with Tetraethyl Lead by Electric Fields

1998 ◽  
Vol 1615 (1) ◽  
pp. 79-85 ◽  
Author(s):  
Akram N. Alshawabkeh ◽  
Elif Ozsu-Acar ◽  
Robert J. Gale ◽  
Susheel K. Puppal
Keyword(s):  
Electric Fields ◽  
Dry Weight ◽  
Buffering Capacity ◽  
Lead Extraction ◽  
Tetraethyl Lead ◽  
Soluble Ions ◽  
High Calcium ◽  
Octane Rating ◽  
High Concentrations ◽  
Soil Buffering

Four tests were conducted to investigate potential uses of electric fields for remediation of high buffering capacity soils contaminated with high lead concentrations (11 percent by dry weight). The soil samples were collected from a site in Louisiana where tetraethyl lead was used extensively for increasing the octane rating of leaded gasoline. Calcium was present at relatively high concentrations (9 percent by dry weight). Initial soil pH was basic (about 8.5). Two enhancement procedures were used: acetic acid for neutralizing the cathode and membranes to prevent migration of hydroxyl ions from the cathode. Current densities applied were in the order of 5 A/m2 to 10 A/m2. Tests were processed for up to 3,220 hours. Lead extraction rates were significantly affected by high calcium concentration. Energy expenditure was very high (up to 20 667 kWh/m3 in the unenhanced test). The study showed that the soil buffering capacity significantly affected energy requirements, cost-effectiveness, and success of the process. Efficient extraction of lead in soils will be controlled by the presence of high concentrations of soluble ions (such as calcium) in the soil.

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