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1.
Poudel Jeeban Lee You Min Kim Hyeok Jin Oh Sea Cheon 《Journal of Material Cycles and Waste Management》2021,23(1):214-221
Journal of Material Cycles and Waste Management - Owing to various advantages of artificial marble compared to natural marble, its application has been rising exponentially, which has resulted in... 相似文献
2.
Poudel Raju Hirai Yasuhiro Asari Misuzu Sakai Shin-ichi 《Journal of Material Cycles and Waste Management》2018,20(3):1663-1675
Journal of Material Cycles and Waste Management - Significant quantities of building waste were generated from collapsed residential and dilapidated buildings as a result of the disastrous Gorkha... 相似文献
3.
The study was to investigate the adsorption behavior of arsenite (As(Ⅲ)) and arsenate (As(Ⅴ)) on two variable charge soils, i.e., Haplic Acrisol and Rhodic Ferralsol at different ionic strengths and pH with batch methods. Results indicated that the amount of As(Ⅲ) adsorbed by these two soils increased with increasing solution pH, whereas it decreased with increasing ionic strength under the acidic condition. This suggested that As(Ⅲ) was mainly adsorbed on soil positive charge sites through electrostatic attraction under the acidic condition. Moreover, intersects of As(Ⅴ) adsorption-pH curves at different ionic strengths (a characteristic pH) are obtained for both soils. It was noted that above this pH, the adsorption of As(Ⅴ) was increased with increasing ionic strength, whereas below it the reverse trend was true. Precisely the intersect pH was 3.6 for Haplic Acrisol and 4.5 for Rhodic Ferralsol, which was near the values of PZSE (soil point of zero salt effect) of these soils. The effects of ionic strength and pH on arsenate adsorption by these soils were interpreted by the adsorption model. The results of zeta potential suggested that the potential in adsorption plane becomes less negative with increasing ionic strength above soil PZSE and decreases with increasing ionic strength below soil PZSE. These results further supported the hypothesis of the adsorption model that the potential in the adsorption plane changes with ionic strength with an opposite trend to surface charge of the soils. Therefore, the change of the potential in the adsorption plane was mainly responsible for the change of arsenate adsorption induced by ionic strength on variable charge soils. 相似文献
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5.
Yadav Uprety Ram C. Poudel Hugo Asselin Emmanuel Boon 《Environment, Development and Sustainability》2011,13(3):463-492
A survey of plant biodiversity and ethnobotany was conducted along the Seti river banks in the Tanahun district of Western
Nepal. This area, home of the Magar ethnic group, will be impacted by a major hydropower project, currently under feasibility study. The objective of the study
was to document plant biodiversity and ethnobotany in order to suggest appropriate conservation and management strategies.
Botanical sampling was conducted inside quadrats and along transects. A total of 221 plant species were recorded in the study
area, distributed as herbs (80 species), trees (68), shrubs (28), climbers (19), pteridophytes (18), lianas (5), and epiphytes
(3). Twelve of the inventoried species figure in one or more conservation categories identified by various national or international
agencies. Group discussions and personal interviews allowed to find out that 43% of the species were ethnobotanically important
for the local people and that most were used as medicine, food, or timber. We propose specific species for sustainable use
programs based on certain criteria. The area is very important in terms of plant biodiversity and ethnobotany, and hence,
immediate implementation of conservation measures is recommended to maintain the high social, ecological and economic values
of the area. 相似文献
6.
TIWARI Diwakar 《环境科学学报(英文版)》2009,(7)
The study was to investigate the adsorption behavior of arsenite (As(III)) and arsenate (As(V)) on two variable charge soils, i.e., Haplic Acrisol and Rhodic Ferralsol at dierent ionic strengths and pH with batch methods. Results indicated that the amount of As(III) adsorbed by these two soils increased with increasing solution pH, whereas it decreased with increasing ionic strength under the acidic condition. This suggested that As(III) was mainly adsorbed on soil positive charge sites through electrostati... 相似文献
7.
Poudel Jeeban Ohm Tae-In Gu Jae Hoi Shin Myung Chul Oh Sea Cheon 《Journal of Material Cycles and Waste Management》2017,19(2):917-927
Journal of Material Cycles and Waste Management - This paper describes the effect of torrefaction on the characteristics of empty fruit bunches (EFB) and palm kernel shell (PKS). The torrefaction... 相似文献
8.
The denitrification and P-removal in the sorption-denitrification-P-removal (S-DN-P) process were carried out under various wastewater compositions. It is noted that P-removal largely depends on the wastewater composition as well to the quantity of the substrates present in wastewater fraction. Three different wastewater fractions are obtained as: raw wastewater, dissolved wastewater (obtained with filtration using 0.45 μm filter), and undissolved wastewater (i.e., infiltrate obtained by above filtration). ... 相似文献
9.
Kumar Anuj Ingle Anjali Shende Diwakar Z. Wasewar Kailas L. 《Environmental science and pollution research international》2023,30(10):24890-24898
Environmental Science and Pollution Research - Levulinic acid is a carboxylic acid present in industrial downstream. It is an important chemical and can be transformed into various important... 相似文献
10.
Tomas Lundmark Johan Bergh Annika Nordin Nils Fahlvik Bishnu Chandra Poudel 《Ambio》2016,45(2):203-213
Continuous-cover forestry (CCF) has been recognized for the production of multiple ecosystem services, and is seen as an alternative to clear-cut forestry (CF). Despite the increasing interest, it is still not well described how CCF would affect the carbon balance and the resulting climate benefit from the forest in relation to CF. This study compares carbon balances of CF and CCF, applied as two alternative land-use strategies for a heterogeneous Norway spruce (Picea abies) stand. We use a set of models to analyze the long-term effects of different forest management and wood use strategies in Sweden on carbon dioxide emissions and carbon stock changes. The results show that biomass growth and yield is more important than the choice of silvicultural system per se. When comparing CF and CCF assuming similar growth, extraction and product use, only minor differences in long-term climate benefit were found between the two principally different silvicultural systems. 相似文献