The Meek Shall Inherit the Burrow: Feedback in Earthworm Soil Modification

2010 ◽  
pp. 123-140 ◽  
Author(s):  
Visa Nuutinen
Keyword(s):  
Soil Modification

Soil Modification by Admixtures

2015 ◽  
pp. 291-309 ◽  
Author(s):  
Anand J. Puppala ◽  
Aravind Pedarla ◽  
Tejo Bheemasetti
Keyword(s):  
Soil Modification

scholarly journals Black Cotton Soil Modification by the Application of Waste Materials

2016 ◽  
Vol 60 (4) ◽  
pp. 479-490 ◽  
Author(s):  
Chayan Gupta ◽  
◽  
Ravi Kumar Sharma ◽  
Keyword(s):  
Waste Materials ◽  
Black Cotton Soil ◽  
Soil Modification

scholarly journals Classification and Disposal Strategy of Excess Sludge in the Petrochemical Industry

2019 ◽  
Vol 9 (6) ◽  
pp. 1186 ◽  
Author(s):  
Lei Guo ◽  
Hongzhe Zhang ◽  
Xueyan Jiang ◽  
Yan Wang ◽  
Zhengwei Liu ◽  
...  
Keyword(s):  
Petrochemical Industry ◽  
Arsenic Content ◽  
Radioactive Elements ◽  
Excess Sludge ◽  
Strategy Research ◽  
Sludge Disposal ◽  
Soil Modification ◽  
Solid Waste Landfills ◽  
Selection Of

The excess sludge in the petrochemical industry is large in quantity, complex in composition, and highly harmful, and its rational disposal is of great significance for environmental protection and sustainable development. In the present study, a classification and disposal strategy for the excess sludge in the petrochemical industry is proposed. The strategy first analyzes the dioxin, flammability, corrosivity, reactivity, and leaching properties of the sludge, from which the waste type of the sludge (general waste or hazardous waste) can be determined. Then, methods of disposal can be selected depending on the type of waste and the corresponding risk analysis, enabling rationalized disposal of the sludge. To verify the effectiveness and practicability of the proposed sludge classification and disposal strategy, research on petrochemical excess sludge samples (i.e., Ah, Bl, and Cq) originated from three different regions in China is carried out as a case study. The component analysis of the above three sludge samples revealed that they are all general wastes. In addition, the possibility of employing Cq sludge for landfill, soil modification, and greening mud, as well as the risk of landfill and incineration disposal in solid waste landfills are investigated. Furthermore, natural radioactive elements uranium and thorium in Cq sludge sample are studied. The results show that Cq sludge cannot be used for landfill, soil modification, and greening mud due to excessive arsenic content. The proposed strategy provides a basis for the selection of reasonable petrochemical excess sludge disposal methods.

Sandy Soil Modification by Bio-Composts for Wheat Production

2017 ◽  
Vol 9 (7) ◽  
pp. 1129-1139 ◽  
Author(s):  
G. El Kadiri Boutchich ◽  
S. Tahiri ◽  
M. El Krati ◽  
E. M. Kabil ◽  
E. K. Lhadi ◽  
...  
Keyword(s):  
Sandy Soil ◽  
Wheat Production ◽  
Soil Modification

Ant-induced soil modification and its effect on plant below-ground biomass

Pedobiologia ◽  
2005 ◽  
Vol 49 (2) ◽  
pp. 127-137 ◽  
Author(s):  
Petr Dostál ◽  
Magdalena Březnová ◽  
Vladimíra Kozlíčková ◽  
Tomáš Herben ◽  
Pavel Kovář
Keyword(s):  
Ground Biomass ◽  
Below Ground ◽  
Soil Modification

scholarly journals Soil modification in a chronosequence of postagricultural ecosystems of the intrazonal lithogenic matrix (Arkhangelsk region, Russia)

2019 ◽  
Vol 72 (4) ◽  
Author(s):  
Elena Nakvasina ◽  
Tatyana Parinova ◽  
Alexey Volkov ◽  
Anna Popova ◽  
Nadezhda Prozherina
Keyword(s):  
Agricultural Production ◽  
Soil Restoration ◽  
Agricultural Practice ◽  
Restoration Process ◽  
The Past ◽  
Arkhangelsk Region ◽  
Floodplain Soils ◽  
Short Period ◽  
Floodplain Meadow ◽  
Soil Modification

Processes of soil self-restoration and soil modification in the chronosequence of postagricultural ecosystems located within the intrazonal (floodplain) soils of boreal forests were studied. Successional changes in ecological features of the floodplain meadow soil properties in the postagricultural period were considered. We used arable land plots (22 model fields) in the Northern Dvina River delta (Primorsky District, Arkhangelsk region, Northwestern Russia) that have been removed from agricultural practice for the past 50 years and are currently at the self-overgrowing stage. Primary/secondary floodplain meadows with natural floodplain soils were used as reference plots. Changes in soil profiles and chemical properties in an old-arable horizon were observed during the restoration of abandoned fields. Floodplain soils of the Northern Dvina River basin occupied 4.8% of the area. These soils were characterized by high fertility and were actively used in agricultural production in the past. Postagricultural ecosystems of the Northern Dvina River floodplain tended to form natural waterlogged soils to varying extents. Ecosystems were characterized by a short period of soil restoration. The soil restoration process was slower than the vegetation cover restoration process. Soil fertility of the arable horizon persisted for 20 years. A cost-effective return of floodplain meadow lands to agricultural production is feasible over a period of 40 years. Then, soils return to natural floodplain soils, whereby they become waterlogged and lose their fertility.

scholarly journals Usage of Wood Fly Ash in Stabilization of Unbound Pavement Layers and Soils

2016 ◽  
Author(s):  
Pēteris Šķēls ◽  
Kaspars Bondars ◽  
Raitis Plonis ◽  
Viktors Haritonovs ◽  
Andris Paeglītis
Keyword(s):  
Fly Ash ◽  
Water Content ◽  
Soil Stabilization ◽  
California Bearing Ratio ◽  
Natural Soil ◽  
Natural Sand ◽  
Proctor Test ◽  
Soil Modification ◽  
Pavement Layers ◽  
Standard Proctor Test

Modification and stabilization of road structure unbound layers has extensively been studied both at laboratory and field for decades. The most commonly used binders for soil modification and stabilization are cement and quicklime (CaO), but alternative pozzolans and their mixtures are of economical, technical and environmental interest. This study presents soil stabilization with wood fly ash (WFA) at laboratory. Natural sand (Sa), Sa mixtures with 10% and 20% WFA were compacted at optimal water content according to Standard Proctor test LVS EN 13286-2:2012, and California bearing ratio (CBR) tested according to LVS EN 13286-47:2012 for cured samples after 96 hours immersed in water with 2 kg surcharge and after 7 days sealed simultaneously. At the same time also Immediate bearing index was determined for natural soil and their mixture with 10% WFA. Results showed 3.79 times enhancement in CBR values Sa after 7 days curing, justifying that WFA is valuable material for hydraulically bound mixtures.

On the Effect of Soil Modification with Lime Using Grading Entropy

2012 ◽  
pp. 271-279
Author(s):  
E. Imre ◽  
J. Szendefy ◽  
J. Lorincz ◽  
P.Q. Trang ◽  
Vijay P. Singh
Keyword(s):  
Soil Modification
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