bioavailability
发表于 2025-3-25 07:24:32
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FIN
发表于 2025-3-25 10:05:00
Enzymatic Deinking,mand has been driven by politics and some by consumer demand. The use of secondary fibers in producing different grades of paper has increased greatly over the past two decades particularly as a result of development in deinking processes. The consumption rate of waste paper (secondary fiber) in dif
悠然
发表于 2025-3-25 11:55:43
Treatment of Wastewaters with Anaerobic Technology,e cellulose, hemicellulose, lignin, and extractives. Softwoods, hardwoods, and straw have different proportions of chemical components (Table 7.1). The processing of wood in paper mills involves various operations including debarking, pulping, and bleaching that result in the discharge of highly pol
手工艺品
发表于 2025-3-25 17:10:02
Purification of Process Water in Closed-Cycle Mills, for pulp and paper production, these mills discharge the used water into the waterways as waste. The paper industry is currently experiencing increasing regulatory pressure to reduce the volume and toxicity of its industrial wastewater. During the past few years, the concept of system closure has b
改革运动
发表于 2025-3-25 23:53:33
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支架
发表于 2025-3-26 00:15:04
Biofiltration of Exhaust Gases,lated to the production of odorous compounds during the cooking of wood chips with white liquor and subsequent points of gaseous release to the atmosphere. Even when pure sodium hydroxide is used to treat wood and straw, odors are produced. The cause of these odors is to be found in the residual sul
陈旧
发表于 2025-3-26 08:21:15
tryPulp and paper production has increased globally and will continue to increase in the near future. Approximately 155 million tons of wood pulp is produced worldwide and about 260 million is projected for the year 2010. To be able to cope with increasing demand, an increase in productivity and imp
庄严
发表于 2025-3-26 08:29:57
https://doi.org/10.1007/978-3-8349-9721-0 require less capital investment. The main disadvantages of mechanical pulping are the high energy requirement, the low strength and the low brightness stability of mechanical pulps (Table 3.1). Addition of chemical pulp is often required to produce papers with adequate strength.
训诫
发表于 2025-3-26 14:51:20
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负担
发表于 2025-3-26 17:52:06
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