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Mingyong Wang, Bowen Zhang, Xihua Cao, Fang Li, Xiuxian Song and Zhiming Yu
Modified clay (MC) technology is the most effective method to control harmful algal blooms (HABs) and has been widely testified in many countries in recent decades. Although dissolved algal organic matter (dAOM) has been found to be abundant in HAB-affec...
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Martha E. Jiménez-Castañeda and Dora I. Medina
The presence of heavy metals in water for human use or consumption represents a major risk to human health. It is therefore important to find materials to remove or minimise the concentration of these pollutants. The adsorption process for the removal of...
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Alvaro D. Sponza, Natalia J. Fernandez, David Yang, Karla A. Ortiz and Abel E. Navarro
Chemical modifications of clay to remove methylene blue (MB) from aqueous solutions at room temperature were compared. Natural bentonite (NC) was modified by cation exchange with hexadecyltrimethylammonium chloride (HC), bencyltriethylammonium chloride (...
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Agus Tugas Sudjianto,Kabul Basah Suryolelono,Ahmad Rifa?i,Indrasurya B Mochtar
Pág. pp. 100 - 105
When expansive clay is wetted, deformations occur both vertically and laterally. If it is tested in an oedometer ring apparatus the lateral deformation will be restrained by the wall of the ring. This paper present the results of an experimental investig...
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M. Sivakumar, M.V.L.R. Anjaneyulu
Pág. 124 - 133
Fatigue cracking is the significant distress caused due to the repetitive axle loads combined with environmental conditions on flexible pavement surface. Commonly bituminous concrete used as surface course mixes produced with unmodified bitumen a viscoel...
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Javier Camacho, Oscar Reyes
Pág. Page 47 - 58
Bogotá, the capital of Colombia is located in a plateau on the Eastern mountain chain of the Andes, whose subsoil is conformed by a quaternary lacustrinedeposit conformed mainly by layers of clays and silts with sand interleaves. The soft clays, present ...
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Jingfan Qi, Jiacheng Yu, Kinjal J. Shah, Dhirpal D. Shah and Zhaoyang You
Natural clay mineral and its modifier called modified clay have been used in many environmental applications for a number of years. However, they are not capable enough to achieve a higher conversion rate and so-called ecological sustainability. This can...
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Yu-Zhang Bi, Jia-Ming Wen, Hao-Liang Wu and Yan-Jun Du
In this paper, the performance of a gas barrier that consisted of polyacrylamide (PAM)-modified compacted clayey soil was experimentally explored. The moisture content and water loss characteristics of the tested soils were adopted as indicative indices ...
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Domna Merachtsaki, Panagiotis Xidas, Panagiotis Giannakoudakis, Konstantinos Triantafyllidis and Panagiotis Spathis
The purpose of the present work was to study the corrosion behavior of steel coated with epoxy-(organo) clay nanocomposite films. The investigation was carried out using salt spray exposures, optical and scanning electron microscopy examination, open cir...
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Miquel Lürling Guido Waajen, Bart Engels, Frank van Oosterhout
Pág. 1 - 24
An enclosure experiment was conducted between July and September 2009 to compare the effectiveness of a phosphate fixative, the lanthanum-modified bentonite clay Phoslock® (LMB), dredging, and their combination in controlling eutrophication in a hypertro...
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Min Hu, Zhangduo Huang, Jiejin Chen, Yipeng Guo, Yichao Zhou, Dashun Liu and Rong Guo
Black shale, as a type of soft rock, exhibits high strength when freshly exposed. However, it easily disintegrates upon contact with water, making it unsuitable for direct use in roadbed construction. Using it as discarded material not only increases con...
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Xianzheng Yu, Hua Liu, Xiaolin Fan, Liangyu Zhu, Chengqi Zhang and Shiyi Zhang
In marine environments, bridge piers and columns are prone to corrosion caused by harmful media, particularly chloride ions. This corrosion can lead to cracking of the steel bars in the protective layer of the bridge piers. To enhance the corrosion resis...
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Alae Elabed, Redouan El khalfaouy, Saad Ibnsouda, Régine Basseguy, Soumya Elabed and Benjamin Erable
Effective and eco-friendly technologies are required for the treatment of tannery wastewater as its biological toxicity and large volume leads toground water pollution. Hydrophobic (unmodified carbon felt) and hydrophilic modified carbon felt with Linde ...
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Andrés N. Beretta, Ana V. Silbermann, Leonardo Paladino, Deborah Torres, Daniel Bassahun, Raquel Musselli, Adriana García-Lamohte
Pág. 263 - 271
The Robinson pipette method (Pipette) is accurate and precise but time consuming. Bouyoucos (1936) proposed a more rapid and simpler procedure called the hydrometer method. Both analytical techniques are sedimentation procedures accepted as standard tech...
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Hai Nguyen Tran
This Special Issue includes 12 research papers on the development of various materials for adsorbing different contaminants in water, such as Sb, Cr(VI), Cu(II), Zn(II), fluorine, phenol, dyes (indigo carmine, Congo red, methylene blue, and crystal viole...
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Jeong W. Ha, Tenzing Japhe, Tesfamichael Demeke, Bertin Moreno and Abel E. Navarro
The presence of sulfur compounds in fossil fuels has been an important concern in recent decades as an environmental risk due to the increase of greenhouse gases in the atmosphere and accentuation of acid rain. This study evaluates modified clays as low-...
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Mohammad N. Islam, Carthigesu T. Gnanendran and Mehrdad Massoudi
In this paper, we develop an elasto-viscoplastic (EVP) model for clay using the non-associated flow rule. This is accomplished by using a modified form of the Perzyna?s overstressed EVP theory, the critical state soil mechanics, and the multi-surface the...
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Dwi Sarah, Lambok M. Hutasoit, Robert M. Delinom, Imam A. Sadisun and Taufiq Wirabuana
Semarang-Demak and other cities along the coast of North Java are vulnerable to land subsidence. The presence of saline groundwater in the coastal region is thought to affect the high subsidence rate, in this case the compressibility of the aquitard laye...
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Dwi Sarah, Lambok M. Hutasoit, Robert M. Delinom, Imam A. Sadisun and Taufiq Wirabuana
Semarang-Demak and other cities along the coast of North Java are vulnerable to land subsidence. The presence of saline groundwater in the coastal region is thought to affect the high subsidence rate, in this case the compressibility of the aquitard laye...
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Barry J. Allred
Filter treatment may be a viable means for removing the nitrate (NO3-), phosphate (PO43-), and pesticides discharged with agricultural drainage waters that cause adverse environmental impacts within the U.S. on local, regional, and national scales. Labor...
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