[{"command":"settings","settings":{"pluralDelimiter":"\u0003","suppressDeprecationErrors":true,"user":{"uid":0,"permissionsHash":"d9587e6f410d2e7f476e3da6cb10a457c78ab82347f962bf83d9020620f901dd"}},"merge":true},{"command":"add_css","data":[{"rel":"stylesheet","media":"all","href":"\/modules\/contrib\/addtocal\/addtocal.css?t2408i"},{"rel":"stylesheet","media":"all","href":"\/themes\/custom\/cest2025\/css\/components\/node.css?t2408i"}]},{"command":"add_js","selector":"body","data":[{"src":"\/core\/assets\/vendor\/jquery\/jquery.min.js?v=3.7.1"},{"src":"\/core\/assets\/vendor\/once\/once.min.js?v=1.0.1"},{"src":"\/core\/misc\/drupalSettingsLoader.js?v=10.5.1"},{"src":"\/core\/misc\/drupal.js?v=10.5.1"},{"src":"\/core\/misc\/drupal.init.js?v=10.5.1"},{"src":"\/modules\/contrib\/addtocal\/addtocal.js?v=10.5.1"},{"src":"\/modules\/contrib\/addtocal\/addtocal-download.js?v=10.5.1"}]},{"command":"openDialog","selector":"#drupal-modal","settings":null,"data":"\n\u003Carticle class=\u0022node node--type-presentation node--promoted node--view-mode-modal\u0022\u003E\n  \n      \u003Cb\u003E\u003Cspan\u003EInfluence of Bamboo-Derived Biochar on Soil Hydraulic Conductivity and Chloride Transport: Experimental and Numerical Analysis\u003C\/span\u003E\n\u003C\/b\u003E\n  \n      \u003Cdiv\u003E\u003Cb\u003ECEST ID: cest2025_00377\u003C\/b\u003E\u003C\/div\u003E\n  \n        \u003Cdiv class=\u0022mb-3\u0022\u003E\n      \u003Cb\u003ERoom  | Sat 6 Sep 2025 | 17:00 - 18:00 pm\u003C\/b\u003E\n    \u003C\/div\u003E\n  \n          \n    \n  \n      \u003Cdiv class=\u0022mt-10\u0022\u003E\n            \u003Cdiv class=\u0022clearfix text-formatted field field--name-presentation-body field--type-text-long field--label-hidden field__item\u0022\u003ESoil health plays a crucial role in the viability of agricultural systems, food security and the sustainability of ecosystems. It directly influences crop productivity through its effects on soil structure, nutrient cycling, microbial activity, and water retention. Recent studies have highlighted the potential of biochar as a soil amendment to increase soil health. By improving soil physical and chemical properties, increasing microbial biomass, and promoting carbon sequestration, biochar contributes significantly to the restoration and maintenance of productive soils, thereby supporting resilient agricultural systems. Additionally, biochar plays a significant role in the remediation of contaminated soils and water.\nThis study examines the impact of biochar application as a soil amendment on key soil properties, including water holding capacity (WHC) and soil hydraulic characteristics such as hydraulic conductivity (k), saturated hydraulic conductivity (Ks), and saturated water content (\u03b8_s). Silica sand was utilized as the test soil, whereas bamboo-derived biochar was employed as the soil amendment. A plexiglass column with a diameter d = 4.4 cm was used, corresponding to a cross-sectional area of A = 15.2 cm2 and a length of L = 42.5 cm. Initially, the column was deaired to avoid the presence of trapped air pockets within the column. Then, the sand or sand\/biochar mixture was homogeneously injected into the column. Next, water was injected downwards with the use of a dual-action piston pump (Shimadzu model LC-20AD) at a constant flow rate until saturated conditions were reached. At that point, the pressure difference \u0394P (Pa) between the injection (upper part) and the ejection (bottom part), estimated by a differential pressure transducer (PX26-005DV (0\u20135 psi) by Omega Company), reached a steady state. The experiments were carried out at 25 \u00b0C. Darcy\u2019s law was used to estimate the saturated hydraulic conductivity Ks. The experimental results revealed that the addition of biochar increased the hydraulic conductivity (k) from 4.80 Darcy to 7.22 Darcy, increased the saturated water content from 0.26 to 0.45, and increased the saturated conductivity (Ks) from 0.27 cm\/min to 0.44 cm\/min.\nThe experimentally derived data were subsequently used as input parameters in the HYDRUS-1D model to simulate the effects of biochar on the soil water storage capacity and the transport of chloride ions (Cl\u207b). Numerical modeling of the unsaturated (vadose) zone via HYDRUS-1D allows for the estimation of water balance components, providing a valuable tool for assessing the efficiency of irrigation practices. HYDRUS-1D is widely utilized by researchers and practitioners worldwide to model the response of soil water dynamics to both natural processes and anthropogenic influences. Compared with the base scenario (no biochar), the numerical simulations revealed an increase in the volumetric water content when bamboo biochar (5%) was added, especially for \u03b8 values greater than 0.15. The cumulative infiltration also increased throughout the entire simulation period. Additionally, a time delay is observed in the vertical profile of the chloride concentration, which is attributed to the deceleration of the flow movement.\n\n\u003C\/div\u003E\n      \u003C\/div\u003E\n  \n  \u003Cdiv class=\u0022mt-5 mb-5\u0022\u003E\n          \u003Cspan\u003E\n          \u003Cb\u003EPresenter:\u003C\/b\u003E\n                      \u003Cp\u003E\n            Dr Marinos Stylianou\n            \u003C\/p\u003E\n                  \u003C\/span\u003E\n      \u003C\/div\u003E\n\n  \u003Cdiv class=\u0022mb-5\u0022\u003E\n          \u003Cdiv class=\u0022field__label\u0022\u003E\n        Authors\n      \u003C\/div\u003E\n              \u003Cp\u003E\n          E. Kyriakou\n        \u003C\/p\u003E\n              \u003Cp\u003E\n          C. Panagiotou\n        \u003C\/p\u003E\n              \u003Cp\u003E\n          P. Papanastasiou\n        \u003C\/p\u003E\n              \u003Cp\u003E\n          Irene Voukkali\n        \u003C\/p\u003E\n              \u003Cp\u003E\n          Antonis Zorpas\n        \u003C\/p\u003E\n              \u003Cp\u003E\n          Marinos Stylianou\n        \u003C\/p\u003E\n            \u003C\/div\u003E\n\n\u003C\/article\u003E\n","dialogOptions":{"width":"700","position":{"my":"right top","at":"right top"},"closeOnEscape":true,"dialogClass":"presentation-dialog","modal":true,"title":"","classes":{"ui-dialog":"presentation-dialog"}}}]