Showing papers by "Chung Lim Law published in 2010"
TL;DR: The authors summarizes some of the emerging drying methods and selected recent developments applicable to postharvest processing, including heat pump-assisted drying with multimode and time-varying heat input, low and atmospheric pressure superheated steam drying, modified atmosphere drying, intermittent batch drying, osmotic pretreatments, microwave-vacuum drying, etc.
Abstract: Thermal drying technologies have attracted significant RD conventional hot air drying can be detrimental to the retention of bioactive ingredients. High temperature tends to damage and denature the product, destroy active ingredients, cause case hardening and discoloration, etc. This article briefly summarizes some of the emerging drying methods and selected recent developments applicable to postharvest processing. These include: heat pump-assisted drying with multimode and time-varying heat input, low and atmospheric pressure superheated steam drying, modified atmosphere drying, intermittent batch drying, osmotic pretreatments, microwave-vacuum drying, etc.
282 citations
TL;DR: It is envisaged that the SBR process could complement the anaerobic treatment to produce final treated effluent which meets the discharge limit.
143 citations
TL;DR: In this article, the effect of intermittency on the quality of Ganoderma tsugae during intermittent drying process was investigated in a heat pump dryer, and the color change of the dried ganoderma was compared with other drying methods such as oven drying and vacuum oven drying.
Abstract: Intermittent drying has been reported as an innovative drying technique for the drying of thermolabile materials in terms of energy cost and product quality. However, the effect of intermittency (α) on the quality of Ganoderma tsugae during intermittent drying process remains unknown. In this study, drying characteristics and product quality of continuous and intermittent drying of Ganoderma tsugae in a heat pump dryer were investigated. The color change of dried Ganoderma tsugae was compared with other drying methods such as oven drying and vacuum oven drying. Experimental results show that intermittent heat pump drying of Ganoderma tsugae reduced the effective drying time compared to continuous heat pump drying but retained lower water-soluble polysaccharides content as the intermittency decreased from 0.67 to 0.2. Nevertheless, heat pump drying of Ganoderma tsugae conducted in continuous or intermittent mode at low drying temperature produced better product quality in terms of total color change (ΔE) a...
75 citations
TL;DR: The plasticity of hot air-dried guluronate-rich (MG) and mannuronaterich (MC) alginate films prepared from 2% and 4% (w/w) solutions, which contained the same amount of polymer, through hot-air drying at 40-80°C were investigated.
38 citations
TL;DR: In this article, the feasibility of thermophilic aerobic biological treatment as a suitable post-treatment system for anaerobically treated POME was examined, and the effects of temperature on the treated effluent quality were investigated by using sequencing batch reactors (SBRs) under mesophilic (28 °C) and thermophilic (45, 50, and 55 °C).
Abstract: Aerobic treatment of wastewater under thermophilic conditions has received growing interest in recent years. Because of the high discharge temperature (75 to 85 °C) of palm oil mill effluent (POME), it would be more economical if POME were treated thermophilically, as then cooling facilities prior to biological treatment can be eliminated. In the present investigation, the feasibility of thermophilic aerobic biological treatment as a suitable post-treatment system for anaerobically treated POME was examined. Also, the effects of temperature on the treated effluent quality were investigated by using sequencing batch reactors (SBRs) under mesophilic (28 °C) and thermophilic (45, 50, and 55 °C) conditions. The average total COD (TCOD) removal efficiencies varied from 55 to 98% at organic loading rates (OLR) of 2.6 to 4.5 kg COD/m3·day, dissolved oxygen (DO) concentrations of 2.9−4.5 mg/L, and mixed-liquor suspended solids (MLSS) concentrations of 22500−24200 mg/L. The results show that the thermophilic aerob...
19 citations