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Your search keyword '"Kawamoto, Ken"' showing total 43 results
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43 results on '"Kawamoto, Ken"'

7. A Cost-Benefit Analysis on Construction and Demolition Waste Recycling Project in Hanoi of Vietnam: Economic, Social, and Environmental Assessment

Author

Tong, Kien T., Nguyen, Hung V., Hoang, Han N., Tran, Tan V., Ishigaki, Tomonori, Kawamoto, Ken, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Ha-Minh, Cuong, editor, Tang, Anh Minh, editor, Bui, Tinh Quoc, editor, Vu, Xuan Hong, editor, and Huynh, Dat Vu Khoa, editor

Published
2022
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8. Characterization of Water Retention and Unsaturated Hydraulic Conductivity for Recycled Road-Base Materials

Author

Ito, Ryohei, Kato, Akira, Matsuno, Akihiro, Kawamoto, Ken, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Dissanayake, Ranjith, editor, Mendis, Priyan, editor, Weerasekera, Kolita, editor, De Silva, Sudhira, editor, and Fernando, Shiromal, editor

Published
2022
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20. Supplementary Data from Wnt Antagonist Gene DKK2 Is Epigenetically Silenced and Inhibits Renal Cancer Progression through Apoptotic and Cell Cycle Pathways

Author

Hirata, Hiroshi, primary, Hinoda, Yuji, primary, Nakajima, Koichi, primary, Kawamoto, Ken, primary, Kikuno, Nobuyuki, primary, Kawakami, Kazumori, primary, Yamamura, Soichiro, primary, Ueno, Koji, primary, Majid, Shahana, primary, Saini, Sharanjot, primary, Ishii, Nobuhisa, primary, and Dahiya, Rajvir, primary

Published
2023
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42. LATERITE GRAINS AS A LOW-COST ADSORBENT TO TREAT HEAVY METAL-CONTAMINATED WATER: A REVIEW.

Author

Priyadarshani Bandara, Arachchillage Buddhika and Kawamoto, Ken

Subjects
LATERITE, HEAVY metals removal (Sewage purification), WATER filtration, GIBBS' free energy, WATER purification, SURFACE charges, GRAIN
Abstract

Heavy metal contamination of water sources is an alarming issue across the globe. It may cause several health problems in humans in addition to its damage to aquatic organisms and its adverse effects on the environment. Among the wastewater treatment techniques of heavy metals, adsorption is much favored due to its cost-effectiveness and easy availability, especially in developing countries in tropical and semi-tropical climate regions. Moreover, natural geo-adsorbents like laterite and its crushed grains can be adopted as an attractive alternative adsorbent in floatation and filtration water treatment systems. In this review, the application of natural and pre-treated laterite grains as a low-cost adsorbent was examined based on selected journal articles published during 1990–2020. This paper summarizes basic physical and chemical properties including surface charge and element compositions of tested samples, batch adsorption results including initial conditions, isotherm and kinetic models, and adsorption and thermodynamic parameters such as the maximum adsorption capacity, removal percentage, and Gibbs free energy that categorize the natural and pre-treated laterite grains. In addition, the results of some previous studies of column experiments and desorption/regeneration of adsorbed heavy metals are described together with prospects for future studies and the applicability of laterite in wastewater treatment for heavy metal remediation. [ABSTRACT FROM AUTHOR]

Published
2022
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43. Steel Slag and Autoclaved Aerated Concrete Grains as Low-Cost Adsorbents to Remove Cd 2+ and Pb 2+ in Wastewater: Effects of Mixing Proportions of Grains and Liquid-to-Solid Ratio.

Author

Kumara, Gajanayake Mudalige Pradeep and Kawamoto, Ken

Abstract

This study investigated the applicability of industrial by-products such as steel slag (SS) and autoclaved aerated concrete (AAC) grains (<0.105, 0.105–2, 2–4.75 mm) as low-cost adsorbents for simultaneous removal of Cd2+ and Pb2+ in wastewater. A series of batch adsorption experiments was carried out in single and binary-metal solutions of Cd2+ and Pb2+ by changing the mixing proportions of SS and AAC grains. In addition, the effect of the liquid-to-solid ratio (L/S) on the removal of Cd2+ and Pb2+ in multi-metal solution was examined. Results showed that SS grains had a high affinity with Cd2+ in the single solution, while AAC grains had an affinity with Pb2+. In the binary solution, the mixtures of SS and AAC grains removed both Cd2+ and Pb2+ well; especially, the tested adsorbents of SS+AAC [1:1] and SS+AAC [1:4] mixtures achieved approximately 100% removal of both metals. Based on the results in the multi-metal solutions, the metal removal % and selectivity sequence varied depending on the mixed proportions of SS and AAC grains and L/S values. It was found that the SS+AAC [1:1] mixture of SS and AAC grains showed 100% removals of Cd2+, Pb2+, Cu2+, Ni2+, and Zn2+ simultaneously at L/S = 10 and 60. [ABSTRACT FROM AUTHOR]

Published
2021
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