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      EFFECT OF YELLOW LOESS ON ODOROUS GAS ADSORPTION AND ECOTOXICITY TEST USING DAPHNIA MAGNA

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          ABSTRACT

          To minimize damage caused by harmful substances released from artificial construction materials, there has been increasing interest in eco-friendly houses constructed with natural materials. Among natural materials, yellow loess is South Korea’s most representative eco-friendly construction material, with high purification performance for indoor use. However, there has been no objective assessment of yellow loess’s performance at purifying indoor air. In this study, internal pores were found in yellow loess that were of a lamellar crystal structure consisting of bonds of silica and alumina plates, and there was a high negative charge on the loess surface; these might have contributed to the excellent performance of yellow loess in adsorbing odorous gas. There was also an exposure test using Daphnia magna to determine the eco-friendliness of yellow loess compared with that of cement mortar. Results showed the survival of Daphnia magna was longer in the indoor environment of a test chamber with higher concentration of ammonia wherein yellow loess was placed. EC50 (median effective concentration, the concentration that caused death of 50% of bio-specimens) value of 19 ml of ammonia (0.1% solution), which was three times more than EC50 value of 6 ml of ammonia of the same area of cement mortar.

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          “Emissions and treatment of VOCs emitted from wood-based construction materials: Impact on indoor air quality”

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                Author and article information

                Journal
                jgrb
                Journal of Green Building
                College Publishing
                1943-4618
                1552-6100
                Winter 2021
                15 February 2021
                : 16
                : 1
                : 103-114
                Author notes
                [1.]

                1 Jeonbuk National University, Department of Architectural Engineering, Korea.

                [2. ] Professor, Jeonbuk National University, Department of Architectural Engineering, Research Center of Industrial Technology, Korea, e-mail: archiso@ 123456jbnu.ac.kr (Corresponding Author).
                Article
                i1943-4618-16-1-103
                10.3992/jgb.16.1.103
                7310414b-a0f4-47ff-a464-058142bf576a

                Volumes 1-10 of JOGB are open access and do not require permission for use, though proper citation should be given. To view the licenses, visit https://creativecommons.org/licenses/by-nc/4.0/

                History
                Page count
                Pages: 12
                Categories
                RESEARCH ARTICLES

                Urban design & Planning,Civil engineering,Environmental management, Policy & Planning,Architecture,Environmental engineering
                eco-friendly material,gas adsorption,yellow loess,CEC, Daphnia magna evaluation

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