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RISS 인기검색어
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- 저자 : Yun Hin Taufiq-Yap (검색결과 2 건)
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Application of modified red mud in environmentally-benign applications: A review paper
Collin G. Joseph,Yun Hin Taufiq-Yap,Vigneswar Krishnan,Gianluca Li Puma 대한환경공학회 2020 Environmental Engineering Research Vol.25 No.6
Red mud (RM) is a waste product that results from bauxite refining via the Bayer process. Its disposal remains an issue which raises significant environmental concerns, particularly if disposed on land or water bodies. Much research has been done on the use of red mud for environmentally-benign applications such as wastewater treatment, catalysis, the production of construction materials and glass ceramics, and for the recovery of metals. This paper reviews the current efforts made in the utilization of red mud as a valuable industrial by-product, which in turn should minimize its harmful impact on the environment. This detailed review compiles and highlights a variety of novel applications of modified red mud as a coagulant, an adsorbent for wastewater treatment, as well as, its use in catalytic processes and in building materials. The physico-chemical properties of red mud can be tuned by a range of treatment methods include acidification, neutralization and heat treatment. As revealed from the literature reviewed, modifications on red mud for the removal of various types of contaminants have shown promising results. However, further amendment and modifications on red mud are needed to utilize this industrial waste in many other industrial applications.
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Photocatalytic treatment of detergent-contaminated wastewater: A short review on current progress
Collin Glen Joseph,Yun Hin Taufiq-Yap,Nur Ammarah Affandi,Janice Lay Hui Nga,Veena Vijayan 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.3
Detergents are emerging contaminants in water that require immediate attention due to their widespread use industrially and domestically. However, review articles on detergent treatment methods are not readily available in the literature as this topic is often overlooked. Various oxidation techniques have been applied to eliminate surfactants from the effluents completely. The photocatalytic treatment method is one of the most promising environmentalfriendly oxidation technologies to degrade organic pollutants. Photocatalysis using TiO2 as a catalyst shows outstanding properties, including excellent thermal and chemical stability, nontoxicity, and high photocatalytic degradation ability towards most of the organic compounds present in the wastewater. This paper reviews the research on photocatalytic degradation of detergent contaminated wastewater and the parameters that affect the semiconductor's photocatalytic activity. Lastly, critical remarks are also presented on the photodegradation treatment of laundry detergent wastewater, the economic feasibility of photodegradation treatment on an industrial scale, and suggestions for future work.
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