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清洁生产是工业生产追求的最高境界,而结构调整阶段给企业提供了一个很好的实施清洁生产的契机,使企业可以借助结构调整机会,将清洁生产渗透至企业的所有方面,最大限度地取得清洁生产的效果。 相似文献
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Characterization of humic acids extracted from the sediments of the various
rivers and lakes in China 总被引:1,自引:0,他引:1
The humic acids (HAs) isolated from the sediments of the various rivers,lakes,and reservoirs in China were studied using elemental analyzer,fourier transform infrared (FT-IR),and CP/MAS 13C nuclear magnetic resonance (NMR) spectroscopy.The results showed that the HAs were characterized by some common chemical and physicochemical properties,but they also pose some differences in the C-containing functional groups.The C/N,C/H,O/C,and O/H ratios differ widely for the various HAs,showing that the elemental comp... 相似文献
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Kristen Ounanian Jan P.M. van Tatenhove Paulina Ramírez-Monsalve 《Journal of Environmental Policy & Planning》2020,22(2):211-225
ABSTRACTIn the North Sea, many oil and gas fields will reach the end of their productivity and their associated structures will be decommissioned. OSPAR decision 98/3 prescribes removal of all disused offshore structures as the only acceptable decommissioning option. This policy is the legacy of the 1995 Brent Spar incident, which resulted in the current dominant discourse of ‘Hands off the Oceans,’ ruling out the conversion of oil and gas rigs into artificial reefs (Rigs-to-Reefs (RtR)). The shift from a conservation to a restoration paradigm could open up the RtR debate. In this paper, a discourse analysis is carried out to discern whether and how ideas about RtR and ecosystem restoration are articulated to challenge the dominant ‘Hands off the Oceans’ discourse and thereby bring about change in North Sea decommissioning policy. A discourse analytic framework is applied to elucidate whether an ‘RtR as Restoration’ discourse can be distinguished and how competing claims are presented in the various storylines. Our analysis shows an ‘RtR as Restoration’ discourse, consisting of four different storylines. Given the fragmented nature of this discourse, the ‘RtR as Restoration’ discourse will not overcome the dominant ‘Hands off the Oceans’ discourse. 相似文献
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首先,论述了我国清洁生产的认识形成过程;接着,分析了我国清洁生产的实践及取得的成就;最后,总结出了我国清洁生产实践所得出的结论,并提出了在我国进一步推行清洁生产的几点建议。 相似文献
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“可持续生产”与“清洁生产”内涵辨析 总被引:2,自引:0,他引:2
就可持续生产在可持续发展中的重要性而言,厘清可持续生产的含义并对可持续生产与清洁生产的内涵进行辨析十分必要.阐明可持续发展的确切含义,将其定义为与人、自然、社会相和谐的生产活动或方式.在此基础上,结合清洁生产含义,指出了可持续生产与清洁生产在实施层面、目标指向和内容维度三方面的区别:①清洁生产的实施层面仅局限于企业层面,而可持续生产却涉及到整个社会层面;②在生产活动对人和社会的影响方面,可持续生产的目标指向比清洁生产更为全面;③可持续生产是在“技术”、“制度”2个维度上的双向拓展,而清洁生产仅是在“技术”维度上的单维延伸. 相似文献
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Inna P. Solyanikova Elena V. Emelyanova Oksana V. Borzova 《Journal of environmental science and health. Part. B》2016,51(3):182-191
The process of benzoate degradation by strain Rhodococcus opacus 1CP after a five-year dormancy was investigated and its peculiarities were revealed. The strain was shown to be capable of growth on benzoate at a concentration of up to 10 g L?1. The substrate specificity of benzoate dioxygenase (BDO) during the culture growth on a medium with a low (200–250 mg L?1) and high (4 g L?1) concentration of benzoate was assessed. BDO of R. opacus 1CP was shown to be an extremely narrow specificity enzyme. Out of 31 substituted benzoates, only with one, 3-chlorobenzoate, its activity was higher than 9% of that of benzoate. Two dioxygenases, catechol 1,2-dioxygenase (Cat 1,2-DO) and protocatechuate 3,4-dioxygenase (PCA 3,4-DO), were identified in a cell-free extract, purified and characterized. The substrate specificity of Cat 1,2-DO isolated from cells of strain 1CP after the dormancy was found to differ significantly from that of Cat 1,2-DO isolated earlier from cells of this strain grown on benzoate. By its substrate specificity, the described Cat 1,2-DO was close to the Cat 1,2-DO from strain 1CP grown on 4-methylbenzoate. Neither activity nor inhibition by protocatechuate was observed during the reaction of Cat 1,2-DO with catechol, and catechol had no inhibitory effect on the reaction of PCA 3,4-DO with protocatechuate. 相似文献
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Lassen C Hansen E Jensen AA Olendrzyński K Kołsut W Zurek J Kargulewicz I Debski B Skośkiewicz J Holtzer M Grochowalski A Brante E Poltimae H Kallaste T Kapturauskas J;Danish Cooperation for Environment in Eastern Europe 《Environmental science and pollution research international》2003,10(1):49-56
The present paper summarises the results of the project: 'Survey of Anthropogenic Sources of Dioxins and Furans in the Baltic Region'. As a part of the project, inventories have been carried out in Estonia, Latvia, Lithuania and Poland by applying the toolkit for quantification of dioxin and furan releases developed by UNEP Chemicals. The main route of direct releases to the environment is emission to air. Total emission to air from Poland was estimated at 490 (88-1,300) g I-TEQ/year, whereas the emissions from Estonia, Latvia and Lithuania were estimated as being 14 (2.4-54), 23 (2.6-63) and 17 (2.6-38) g I-TEQ, respectively. In general, the uncertainty on the estimates is very high, and recommendations regarding further development of the inventories have been made, and measures for reducing the releases have been provided. 相似文献