{"id":4561,"date":"2024-02-21T12:25:14","date_gmt":"2024-02-21T09:25:14","guid":{"rendered":"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561"},"modified":"2024-02-21T12:25:14","modified_gmt":"2024-02-21T09:25:14","slug":"examination-of-msc-thesis-in-environmental-engineering-department-9","status":"publish","type":"post","link":"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561","title":{"rendered":"Examination of MSc Thesis in Environmental Engineering Department"},"content":{"rendered":"

[vc_row][vc_column][vc_column_text]<\/p>\n

\u00a0<\/strong><\/p>\n

Environmental Engineering Department at the College of Engineering, University of Baghdad, held MSc Thesis examination on Wednesday 14\\2\\2024 titled:<\/strong><\/p>\n

“<\/strong>An experimental study of mitigating the sand erosion dunes\u00a0\u00a0\u00a0\u00a0 by plant enzymatic -induced carbonate precipitation”<\/strong><\/p>\n

By the student Sara Salman Kurdy and supervised by Prof. Dr. Muhaned J.<\/strong><\/p>\n

Mohamed-Ridah. The examination committee consisted of Prof. Dr. Abeer I.<\/strong><\/p>\n

\u00a0Musa as Chairman, and the membership of Asst. Prof. Dr. Haidar M. <\/strong><\/p>\n

Abdulhameed, and Asst. Prof. Dr. Salman H. Abbas. After conducting the public <\/strong><\/p>\n

discussion and listening to the student\u2019s defense, the dissertation was accepted <\/strong><\/p>\n

with excellent degree. It was summarized as follows:<\/strong><\/p>\n

Enzyme-induced carbonate precipitation (EICP) is a process that uses urease enzyme extracted from plants as a catalyst to produce calcium carbonate (CaCO3). Under suitable conditions, urease hydrolyzes into ammonia and inorganic carbon, which promotes the precipitation of carbonate minerals. This method is currently considered a promising approach for various engineering applications, including enhancing the compressive strength of silty sand. At first, a study was conducted on 10 different plants to identify the most efficient plant in terms of producing a significant quantity of the urease enzyme. Chickpeas were selected as the plant with the highest enzymatic activity among the ten plants, and it exhibited the greatest productivity of the urease enzyme, measuring 2.75 U\/mg protein. The extraction efficiency, expressed as a ratio of 1:10 (weight to volume), was achieved within 15 minutes. Various buffers were employed in the process. The sodium phosphate buffer with a concentration of 0.1M and a pH of 7 was chosen as the optimal extraction buffer. The chickpea seeds exhibited a high level of enzymatic activity at a temperature of 37\u00b0C during a 60-minute incubation period. The experimental works were categorised into fuor\u00a0 stages. The initial step involves employing response surface methodology (RSM) to ascertain the best conditions for extracting urease enzyme from chickpea seeds. The findings indicated that chickpea seeds exhibited the\u00a0 enzyme activity (3.99 U\/mg protein) when subjected to the optimal extraction conditions: pH 7.99, tris base buffer concentration of 0.2, a duration of 60 minutes, and a ratio of 1:13 (gm:ml). These results demonstrate the excellence of the experimental data. When employing a second-order polynomial model, the projected correlation coefficient (pred. R2) was 0.8477, the adjusted correlation coefficient (adj. R2) was 0.9333, and the correlation values (R2) were 0.9665. This indicates a strong agreement between the anticipated models and experimental data. The second step investigated the urease enzyme’s capacity to generate carbonate via bioprecipitation. During this step, the ideal conditions involved using a solution composed of an initial enzyme\/(urea\/calcium) solution in a 1:1 ratio, with a concentration of 1.25 M, which is appropriate for the mineral carbonate bioprecipitation process. The approval and characterization of this result were conducted using X-ray diffraction (XRD). The third stage involved performing a series of experiments using the design mixture model tool in the Design-Expert programme. In this stage, the programme generated 25 runs for silty sand, considering three variables: ratio (CaCl2-urea) (1.05-1.25) M, enzyme (20-30) ml, and time (12-14) days. These variables were used to determine the optimal percentages for enhancing the compressive strength of the silty sand. in the fourth stage,Wind\u00a0 experiments were conducted to evaluate the use of a topically applied EICP solution containing plant-derived urease(Chicpeas) to stabilise soil against fugitive dust emission.\u00a0 soils were tested (silty sand) .\u00a0 The most effective variables in controlling the movement of soil particles by wind force were as follows order:<\/strong><\/p>\n

\u00a0Channel >Time>Enzyme>Wind Speed in the X- direction when the soil was treated by the plant enzyme using response surface methodology (RSM). At the same time, this order was Time>Channel >Enzyme>Wind Speed to minimize dispersion in the Y-direction. Testing on silty sand revealed that the enzyme improved the silty sand’s stability and hardness by 75%.This study demonstrated the outstanding potential of EICP as a natural material with significant economic advantages for future utilisation in various engineering applications.<\/strong><\/p>\n

\u00a0<\/strong>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_gallery interval=”3″ images=”4562″ img_size=”large”][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

[vc_row][vc_column][vc_column_text] \u00a0 Environmental Engineering Department at the College of Engineering, University of Baghdad, held MSc Thesis examination on Wednesday 14\\2\\2024 … <\/i>\u0627\u0644\u0645\u0632\u064a\u062f<\/span><\/a><\/p>\n","protected":false},"author":165,"featured_media":4563,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[30,31],"tags":[],"class_list":["post-4561","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-environmental-engineering","category-thesis"],"yoast_head":"\nExamination of MSc Thesis in Environmental Engineering Department - College of Engineering<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Examination of MSc Thesis in Environmental Engineering Department - College of Engineering\" \/>\n<meta property=\"og:description\" content=\"[vc_row][vc_column][vc_column_text] \u00a0 Environmental Engineering Department at the College of Engineering, University of Baghdad, held MSc Thesis examination on Wednesday 1422024 ... \u0627\u0644\u0645\u0632\u064a\u062f\" \/>\n<meta property=\"og:url\" content=\"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561\" \/>\n<meta property=\"og:site_name\" content=\"College of Engineering\" \/>\n<meta property=\"article:published_time\" content=\"2024-02-21T09:25:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2024\/02\/Picture23.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"554\" \/>\n\t<meta property=\"og:image:height\" content=\"565\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"sofia\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"sofia\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561#article\",\"isPartOf\":{\"@id\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561\"},\"author\":{\"name\":\"sofia\",\"@id\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/#\/schema\/person\/deec535872654eef9d1f0ed631b1ac6d\"},\"headline\":\"Examination of MSc Thesis in Environmental Engineering Department\",\"datePublished\":\"2024-02-21T09:25:14+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561\"},\"wordCount\":688,\"publisher\":{\"@id\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/#organization\"},\"image\":{\"@id\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561#primaryimage\"},\"thumbnailUrl\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2024\/02\/Picture23.jpg\",\"articleSection\":[\"Environmental Engineering\",\"thesis\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561\",\"url\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561\",\"name\":\"Examination of MSc Thesis in Environmental Engineering Department - College of Engineering\",\"isPartOf\":{\"@id\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561#primaryimage\"},\"image\":{\"@id\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561#primaryimage\"},\"thumbnailUrl\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2024\/02\/Picture23.jpg\",\"datePublished\":\"2024-02-21T09:25:14+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561#primaryimage\",\"url\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2024\/02\/Picture23.jpg\",\"contentUrl\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2024\/02\/Picture23.jpg\",\"width\":554,\"height\":565},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Examination of MSc Thesis in Environmental Engineering Department\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/#website\",\"url\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/\",\"name\":\"College of Engineering\",\"description\":\"University of Baghdad\",\"publisher\":{\"@id\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/#organization\",\"name\":\"College of Engineering\",\"url\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/en-logo.png\",\"contentUrl\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/en-logo.png\",\"width\":500,\"height\":500,\"caption\":\"College of Engineering\"},\"image\":{\"@id\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.youtube.com\/channel\/UCzbvMdjzsywGIuwY8bhfoWA\"]},{\"@type\":\"Person\",\"@id\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/#\/schema\/person\/deec535872654eef9d1f0ed631b1ac6d\",\"name\":\"sofia\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/a17e4b216001de7061fdedda4e7fb71c180292ac8252adc52b77c5e19054eb51?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/a17e4b216001de7061fdedda4e7fb71c180292ac8252adc52b77c5e19054eb51?s=96&d=mm&r=g\",\"caption\":\"sofia\"},\"url\":\"https:\/\/en.coeng.uobaghdad.edu.iq\/?author=165\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Examination of MSc Thesis in Environmental Engineering Department - College of Engineering","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561","og_locale":"en_US","og_type":"article","og_title":"Examination of MSc Thesis in Environmental Engineering Department - College of Engineering","og_description":"[vc_row][vc_column][vc_column_text] \u00a0 Environmental Engineering Department at the College of Engineering, University of Baghdad, held MSc Thesis examination on Wednesday 1422024 ... \u0627\u0644\u0645\u0632\u064a\u062f","og_url":"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561","og_site_name":"College of Engineering","article_published_time":"2024-02-21T09:25:14+00:00","og_image":[{"width":554,"height":565,"url":"https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2024\/02\/Picture23.jpg","type":"image\/jpeg"}],"author":"sofia","twitter_card":"summary_large_image","twitter_misc":{"Written by":"sofia","Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561#article","isPartOf":{"@id":"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561"},"author":{"name":"sofia","@id":"https:\/\/en.coeng.uobaghdad.edu.iq\/#\/schema\/person\/deec535872654eef9d1f0ed631b1ac6d"},"headline":"Examination of MSc Thesis in Environmental Engineering Department","datePublished":"2024-02-21T09:25:14+00:00","mainEntityOfPage":{"@id":"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561"},"wordCount":688,"publisher":{"@id":"https:\/\/en.coeng.uobaghdad.edu.iq\/#organization"},"image":{"@id":"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561#primaryimage"},"thumbnailUrl":"https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2024\/02\/Picture23.jpg","articleSection":["Environmental Engineering","thesis"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561","url":"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561","name":"Examination of MSc Thesis in Environmental Engineering Department - College of Engineering","isPartOf":{"@id":"https:\/\/en.coeng.uobaghdad.edu.iq\/#website"},"primaryImageOfPage":{"@id":"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561#primaryimage"},"image":{"@id":"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561#primaryimage"},"thumbnailUrl":"https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2024\/02\/Picture23.jpg","datePublished":"2024-02-21T09:25:14+00:00","breadcrumb":{"@id":"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561#primaryimage","url":"https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2024\/02\/Picture23.jpg","contentUrl":"https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2024\/02\/Picture23.jpg","width":554,"height":565},{"@type":"BreadcrumbList","@id":"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=4561#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/en.coeng.uobaghdad.edu.iq\/"},{"@type":"ListItem","position":2,"name":"Examination of MSc Thesis in Environmental Engineering Department"}]},{"@type":"WebSite","@id":"https:\/\/en.coeng.uobaghdad.edu.iq\/#website","url":"https:\/\/en.coeng.uobaghdad.edu.iq\/","name":"College of Engineering","description":"University of Baghdad","publisher":{"@id":"https:\/\/en.coeng.uobaghdad.edu.iq\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/en.coeng.uobaghdad.edu.iq\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/en.coeng.uobaghdad.edu.iq\/#organization","name":"College of Engineering","url":"https:\/\/en.coeng.uobaghdad.edu.iq\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/en.coeng.uobaghdad.edu.iq\/#\/schema\/logo\/image\/","url":"https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/en-logo.png","contentUrl":"https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/en-logo.png","width":500,"height":500,"caption":"College of Engineering"},"image":{"@id":"https:\/\/en.coeng.uobaghdad.edu.iq\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.youtube.com\/channel\/UCzbvMdjzsywGIuwY8bhfoWA"]},{"@type":"Person","@id":"https:\/\/en.coeng.uobaghdad.edu.iq\/#\/schema\/person\/deec535872654eef9d1f0ed631b1ac6d","name":"sofia","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/en.coeng.uobaghdad.edu.iq\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/a17e4b216001de7061fdedda4e7fb71c180292ac8252adc52b77c5e19054eb51?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/a17e4b216001de7061fdedda4e7fb71c180292ac8252adc52b77c5e19054eb51?s=96&d=mm&r=g","caption":"sofia"},"url":"https:\/\/en.coeng.uobaghdad.edu.iq\/?author=165"}]}},"modified_by":"sofia","_links":{"self":[{"href":"https:\/\/en.coeng.uobaghdad.edu.iq\/index.php?rest_route=\/wp\/v2\/posts\/4561","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/en.coeng.uobaghdad.edu.iq\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/en.coeng.uobaghdad.edu.iq\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/en.coeng.uobaghdad.edu.iq\/index.php?rest_route=\/wp\/v2\/users\/165"}],"replies":[{"embeddable":true,"href":"https:\/\/en.coeng.uobaghdad.edu.iq\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4561"}],"version-history":[{"count":0,"href":"https:\/\/en.coeng.uobaghdad.edu.iq\/index.php?rest_route=\/wp\/v2\/posts\/4561\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/en.coeng.uobaghdad.edu.iq\/index.php?rest_route=\/wp\/v2\/media\/4563"}],"wp:attachment":[{"href":"https:\/\/en.coeng.uobaghdad.edu.iq\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4561"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/en.coeng.uobaghdad.edu.iq\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4561"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/en.coeng.uobaghdad.edu.iq\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4561"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}