ويركزمعهد بحوثالعامة لليمينغ الصناعة الثقيلةفي مجال البحوث وتطوير التكنولوجيا المتقدمة والمنتجات الموجهة لصالح العملاء، فضلا عن بناءالقدرة التنافسية الجوهريةليجعل يمينغالصناعة الثقيلةرائدةفي هذه الصناعة.من خلال توفيرنتائج البحوثالأساسية، ويدعم المعهديمينغالصناعة الثقيلةالتكنولوجيا والمنتجات لتكون أعلىمنهافي العالمالقائمة.
معهد بحوثالعامة لليمينغ الصناعة الثقيلةهيقسم البحث والتطويرالأوليةللبحوثالتقنيةوالإدارة التقنية. وهي مسؤولة عنتطوير التكنولوجياالمطبقة علىيمينغجميع المنتجات، وإجراء البحوث الفنيةمقدمةعلى المنتجات الجديدةووضعالمعايير؛البحثالاهتزاز، والأثر، والضوضاء، والتكنولوجيا الهيدروليكية، والمطابقة الطاقةوتوفير الطاقة، والمواد الجديدة، وأنظمة التحكم، وخلق تكنولوجياتمبتكرة ومنتجاتحمليوبناءمنصة علىشبكة خاصةوعامةللتجاربوالاختباراتوذلك لتبادل التجربةالعامة ونتائج الاختبار.
developing practical applications for ureolytic carbonate precipitation using plantderived urease enzyme RÉSUMÉ : La cimentation de sable par du carbonate de calcium Abstract The use of plantderived urease enzyme to induce calcium carbonate (CaCO 3) cementation has been demonstrated through laboratory column tests Benefits of the Carbonate cementation via plant derived urease Arizona State
The most common method of carbonate precipitation via hydrolysis of urea described in the literature employs ureolytic microbes (microbes containing intracellular Carbonate Cementation via Plant Derived Urease Publication Title Carbonate Cementation via Plant Derived Urease Authors Nasser Hamdan; E Kavazanjian Jr; S Carbonate Cementation via Plant Derived Urease ISSMGE
These facts are very important to investigate biocementation of carbonates using plantderived urease, especially using crude extract of plant urease, as a Plantderived urease induced sand cementation is a novel biogeotech nical engineering application in the field of geotechnical engine ering The major topic of (PDF) Plantderived urease induced sand cementation used in
The plantderived urease may offer many benefits over microbial urease to induce carbonate cementation Therefore, it is advantageous to explore the knowledge regarding such a techniqueFigure 2 LVSEM images a) Wellgrown and cementing calcite crystals; b) Cementing calcite crystals at interparticle contact; c) Indention of quartz surface (blue arrows) and Carbonate cementation via plant derived urease Semantic Scholar
Abstract Microbially induced calcium carbonate precipitation (MICP) and enzyme induced calcium carbonate precipitation (EICP) are the two most widely known Plantderived urease may offer many benefits over microbial urease to induce carbonate cementation (Kavazanjian and Karatas, 2008, Hamdan et al, 2013) Therefore, it is advantageous to further investigate different techniques, such as ecofriendly methods, for different applications in the field of geotechnical engineering as an Soil improvement using plantderived ureaseinduced calcium carbonate
A crude extract from jack beans (Canavalia gladiata) is demonstrated to be an effective source of urease enzyme for biocementation via enzymeinduced carbonate precipitation (EICP)Test tube tests of crude and purified extracts from jack beans, jack bean meal, soybeans, and watermelon seeds show that the crude jack bean extract results in Hamdan N, Kavazanjian Jr E, O’Donnell S (2013) Carbonate cementation via plant derived urease In: Proceedings of the 18th international conference on soil mechanics and geotechnical engineering, Paris Kavazanjian E Jr, Almajed A, Hamdan N (2017) Bioinspired soil improvement using EICP soil columns and soil nails Impact of bacteria and urease concentration on precipitation
Biocementation; Plantderived urease; Enzyme induced calcite precipitation; Download conference paper PDF Carbonate cementation via plant derived urease In Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, (pp 2–6) Google ScholarCarbonate cementation via plant derived urease N Hamdan E Kavazanjian Sean T O’Donnell Chemistry 2013; The use of plantderived urease enzyme to induce calcium carbonate (CaCO3) cementation has been demonstrated through laboratory column testsBiocementation improvement via CaCO3 cementation pattern
Hamdan N, Kavazanjian JE, O’Donnell O (2013) Carbonate cementation via plant derived ureaseIn: Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, 2489–2492 Hammes F, Verstraete W (2002) Key roles of pH and calcium metabolism in microbial carbonate precipitationRecently, soil improvement using EICP (EnzymeInduced Carbonate Precipitation) methods in the geotechnical and geoenvironmental field has become a prominent interest worldwide The objective of this study was to develop an improved extraction technique of crude urease from watermelon seeds in both dry and germinated [PDF] BioMediated Soil Improvement Using Plant Derived
Plantderived urease induced sand cementation used in geotechnical engineering via carbonate precipitation induced by urea hydrolysis, with most studies focusing on microbial inducedCrude Urease Extract for Biocementation H Khodadadi Tirkolaei, N Javadi, +2 authors E Kavazanjian Published 1 December 2020 Engineering Journal of Materials in Civil Engineering AbstractA crude extract from jack beans (Canavalia gladiata) is demonstrated to be an effective source of urease enzyme for biocementation via Crude Urease Extract for Biocementation Semantic Scholar
The cost of urease enzyme production and complex extraction procedure are widely considered as a major barrier for the use of biocementation via enzymeinduced carbonate precipitation (EICP) in practical engineering applications In this paper, crude urease was extracted from soybean using a series of extraction procedures, including Carbonate cementation via plant derived The plantderived urease may offer many benefits over microbial urease to induce carbonate cementation(PDF) Soil Stabilization Against Water Erosion via
This paper describes an experimental feasibility study at the bench scale of EICPtreated sands under simulated rainfall and 3H:1V slope Two natural poorly graded clean sands were tested Block specimens were used to compare the cementation obtained with laboratorygrade urease and crude extract ureaseCarbonate Cementation via Plant Derived Urease; Publication Title Carbonate Cementation via Plant Derived Urease Authors Nasser Hamdan; E Kavazanjian Jr; S T O’Donnell Published In 18th International Conference on Soil Mechanics and Geotechnical Engineering (Paris) Theme Technical Committee 211 GroundCarbonate Cementation via Plant Derived Urease ISSMGE
Hamdan N, Kavazanjian Jr E, O’Donnell S (2013) Carbonate cementation via plant derived urease In: Proceedings of the 18th international conference on soil mechanics and geotechnical engineering, Paris Park SS, Choi SG, Nam IH (2014) Effect of plantinduced calcite precipitation on the strength of sand J Mater Civ Eng Given that the carbonate is derived from an organic and pigeon pea (PCU) on biocementation efficacy via enzymeinduced carbonate (172 kPa) For the plantderived crude urease,Enzyme induced calcium carbonate precipitation and its
Hamdan N Kavazanjian E (2016) Enzymeinduced carbonate mineral precipitation for fugitive dust control Géotechnique 66(7):546–555 Hamdan N, Kavazanjian E, O’Donnell S (2013) Carbonate cementation via plant derived urease 18th Int Conf on Soil Mechanics and Geotechnical Engineering, Paris, FranceBenefits of the use of plantderived urease over the use of microbiallygenerated urease to induce carbonate cementation include the small size of the enzyme, which permits penetration into finer grained soils and makes the process less sensitive to bioplugging, and the availability of 100% of the carbon in the substrate for conversion to CaCO3Carbonate Cementation via Plant Derived Urease 百度学术
Soil improvement using plantderived ureaseinduced calcium carbonate precipitation Soil Found,58 ( 4 ) ( 2018 ),pp 894 910,101016/jsandf201804003 View PDF View article View in Scopus Google ScholarA crude extract from jack beans (Canavalia gladiata) is demonstrated to be an effective source of urease enzyme for biocementation via enzymeinduced carbonate precipitation (EICP)Test tube tests of crude and purified extracts from jack beans, jack bean meal, soybeans, and watermelon seeds show that the crude jack bean extract results in Crude Urease Extract for Biocementation Journal of Materials
Enzymeinduced carbonate precipitation (EICP) is an emerging soil improvement technique to precipitate in situ calcite carbonate to cement soil particles together via free urease Soybeanderived
