China is in a transitional period between urban renewal and industrial change.In this period,the focus has been on the suburbanization of enterprises and land transformation in old industrial areas,particularly areas ...China is in a transitional period between urban renewal and industrial change.In this period,the focus has been on the suburbanization of enterprises and land transformation in old industrial areas,particularly areas with chemical industries.A life cycle theoretical framework was established to develop chemical industrial zones in the context of urban expansion and land function conversion.The long-term historical processes and mechanisms that transformed a typical old chemical industry area along the Yangtze River,Yanziji Area of Nanjing City were unveiled and comparatively analyzed.The study found that the entire life cycle of the case study area was formed through the combined action of different influencing factors.Traditional industrial location factors played important roles during the rise and continuity of the chemical industry zone,while unconventional environmental regulations and government policies drove its decline and transformation.In the transformation of the old chemical zone,the renewal and redevelopment of industrial land into higher-value residential land is a key link determining the feasibility of government fund compensation and the circulation of capital.These findings demonstrate that regional control and environmental regulation play crucial roles in determining the location of polluting industries and the renewal of urban industrial areas.This research enhances the understanding of the development history and reconstruction of chemical industry clusters and plots within megacities at a finer geographic scale.展开更多
Due to metal leaching and poor catalyst stability, the chemical industry's fine chemical and pharmaceutical sectors have been historically reluctant to use supported transition metal catalysts to manufacture fine ...Due to metal leaching and poor catalyst stability, the chemical industry's fine chemical and pharmaceutical sectors have been historically reluctant to use supported transition metal catalysts to manufacture fine chemicals and active pharmaceutical ingredients. With the advent of new generation supported metal catalysts and flow chemistry, we argue in this study, this situation is poised to quickly change. Alongside heterogenized metal nanoparticles, both single-site molecular and single-atom catalyst will become ubiquitous. This study offers a critical outlook taking into account both technical and economic aspects.展开更多
Foreign-oriented Economy Entering a New Stage The Eighth Five-year Plan period saw the fastest development of the foreign-oriented economy in China’s chemical industry, with an accumulated import and export value of ...Foreign-oriented Economy Entering a New Stage The Eighth Five-year Plan period saw the fastest development of the foreign-oriented economy in China’s chemical industry, with an accumulated import and export value of US$100 billion, including US$38.3 billion of exports. In 1996 the total import and export value reached US$30 billion, including US$12 billion of exports. Now, more than 300 chemical enterprises and institutes have obtained foreign展开更多
China’s chemical industry is an important industrial sector in the national economy, closely related to other sectors and consumer markets. The industry produces agricultural chemicals made from coal, petroleum, natu...China’s chemical industry is an important industrial sector in the national economy, closely related to other sectors and consumer markets. The industry produces agricultural chemicals made from coal, petroleum, natural gas, natural ore and biological substances, in addition to organic and inorganic raw materials, compound materials, fine chemicals, and chemicals for special purposes. The industry also uses展开更多
At present,China is the world’s largest consumer of iron ore, nickel,copper,steel,coal and cement,and the world’s second largest consumer of oil,alumina,electricity and energy.Currently, China is creating 4～5% of t...At present,China is the world’s largest consumer of iron ore, nickel,copper,steel,coal and cement,and the world’s second largest consumer of oil,alumina,electricity and energy.Currently, China is creating 4～5% of the world’s GDP by consuming 8.92% of the world’s oil,32.1% of raw coal,30.7% of iron ore,28% of steel.20% of alumina and 50% of cement.展开更多
Founded in 1958 and directly under the Ministry of the Chemical Industry, the Beijing Research Institute of the Chemical Industry (BRICI) engages in research and development in the fields of petrochemicals, fine chemi...Founded in 1958 and directly under the Ministry of the Chemical Industry, the Beijing Research Institute of the Chemical Industry (BRICI) engages in research and development in the fields of petrochemicals, fine chemicals, polymer synthesis and processing, and environmental protection. In the past 30 years or more, the institute has achieved many important scientific results of the State level, and it has signed in rccent years several hundred science and research contracts with展开更多
At the beginning of 1995, Gu Xiulian, Minister of the Chemical Industry, gave a briefing to the media on the newly-drafted 9th Five-Year Plan(1996-2000) for China’s chemical industry. She said that unlike the past de...At the beginning of 1995, Gu Xiulian, Minister of the Chemical Industry, gave a briefing to the media on the newly-drafted 9th Five-Year Plan(1996-2000) for China’s chemical industry. She said that unlike the past development plans under the planned economy system, the new plan orients the product mix, industry structure, enterprise structure and regional distribution to the needs of the domestic and world markets, and co-ordinates the development of state-展开更多
The CCPIT Sub-council of Chemical Industry is a subsidiary of the China Council for the Promotion of International Trade and the China Chamber of International Commerce.
Constructed wetlands are commonly utilized to treat industrial wastewater due to their effectiveness,affordability,and environmental benefits.Many phosphorus chemical enterprises in the middle Yangtze River basin are ...Constructed wetlands are commonly utilized to treat industrial wastewater due to their effectiveness,affordability,and environmental benefits.Many phosphorus chemical enterprises in the middle Yangtze River basin are facing high pollution load challenges and efforts are needed to improve removal efficiency of pollutants.This work was the first to use constructed wetlands for phosphorus chemical industry tailwater(PCITW)treatment.The new hybrid constructed wetlands(CWs)proposed were the aeration horizontal subsurface flow constructed wetland(AHSCW)and the integrated vertical flow constructed wetland(IVCW),which were constructed on a pilot scale.Here,the effectiveness of pollutant removal along hybrid CWs,wetland plant growth,and rootassociated microbial community responses to the PCITW were investigated.The results showed that there was spatial variation in removal of carbon,nitrogen,and phosphorus in the hybrid CWs,and that the AHSCW and the IVCW played synergistic roles in the removal of pollutants.Compared with influent,the toxic effect of effluent to embryos of a rare minnow(Gobiocypris rarus)was alleviated.Exposure to the effluent resulted in no malformation or death for embryos.Plants and microorganisms in the wetland system of the phosphate chemical tailwater were then compared with the control system of municipal tailwater.Plants in the former system had lower root density,and higher average root diameter,root shoot ratio,specific root length,and specific surface area.Plant roots also had decreased NH_(4)^(+)uptake ability but increased Ca^(2+)uptake to adapt to the high load and complex pollution stress.Unlike the control system,stochastic mechanisms had a more important role than deterministic processes in shaping the microbial community assembly associated with the PCITW.Meanwhile,analysis of microbial network-level topological characteristics demonstrated substantial reduction in network interactions complexity and microbiome stability in the treatment system.Findings from this study suggest wetlands will be helpful for efficient purification of phosphorus chemical industry wastewater in the Yangtze River basin.展开更多
Reverse osmosis(RO)is frequently used for water reclamation from treated wastewater or desalination plants.The RO concentrate(ROC)produced from the coal chemical industry(CCI)generally contains refractory organic poll...Reverse osmosis(RO)is frequently used for water reclamation from treated wastewater or desalination plants.The RO concentrate(ROC)produced from the coal chemical industry(CCI)generally contains refractory organic pollutants and extremely high-concentration inorganic salts with a dissolved solids content of more than 20 g/L contributed by inorganic ions,such as Na^(+),Ca^(2+),Mg^(2+),Cl^(−),and SO_(4)^(2−).To address this issue,in this study,we focused on coupling forward osmosis(FO)with chemical softening(FO-CS)for the volume minimization of CCI ROC and the recovery of valuable resources in the form of CaCO_(3).In the case of the real raw CCI ROC,softening treatment by lime-soda ash was shown to effectively remove Ca^(2+)/Ba^(2+)(>98.5%)and Mg^(2+)/Sr^(2+)/Si(>80%),as well as significantly mitigate membrane scaling during FO.The softened ROC and raw ROC corresponded to a maximum water recovery of 86%and 54%,respectively.During cyclic FO tests(4×10 h),a 27%decline in the water flux was observed for raw ROC,whereas only 4%was observed for softened ROC.The cleaning efficiency using EDTA was also found to be considerably higher for softened ROC(88.5%)than that for raw ROC(49.0%).In addition,CaCO3(92.2%purity)was recovered from the softening sludge with an average yield of 5.6 kg/m^(3) treated ROC.This study provides a proof-of-concept demonstration of the FO-CS coupling process for ROC volume minimization and valuable resources recovery,which makes the treatment of CCI ROC more efficient and more economical.展开更多
ON March 14, the evening of the Lantern Festival, I arrived at Gu Xiulian’s home punctually at 7 p.m., the chosen time for my interview. As I rang the doorbell, I felt a little nervous. The thought of interviewing th...ON March 14, the evening of the Lantern Festival, I arrived at Gu Xiulian’s home punctually at 7 p.m., the chosen time for my interview. As I rang the doorbell, I felt a little nervous. The thought of interviewing this high ranking government official, who regularly appeared on television and whose speeches on chemical production could be read in the newspapers, was daunting. To my great surprise, as I entered the apartment, I smelled appetizing food and saw Gu in an apron, preparing展开更多
China is a major exporter of lithopone, occupying 70% of the international market. In the 1990s the Guangzhou Huali Pigment Chemicals Industry Co. grasped the opportunity to revamp its installation to produce 50,000 t...China is a major exporter of lithopone, occupying 70% of the international market. In the 1990s the Guangzhou Huali Pigment Chemicals Industry Co. grasped the opportunity to revamp its installation to produce 50,000 tons of lithopone from the former output of 30,000 tons each year. It ranks first place among the enterprises of the same trade in the world. Its annual exports are 20,000 tons, 1/4 of China’s total. The company pays close attention on the namebrand strategy. The Baiyun-展开更多
Under the pressure of the lasting-high prices of world oil and raw materials of chemical fiber, the increasingly serious environment of international textile trade, and the fluctuation of RMB exchange rate, China’s c...Under the pressure of the lasting-high prices of world oil and raw materials of chemical fiber, the increasingly serious environment of international textile trade, and the fluctuation of RMB exchange rate, China’s chemical fiber industry suffered some embarrassments in the first half year of 2005, but redeveloped in the other half.展开更多
On Jun. 10-12, 2009, The 15th China’s International Chemical Fiber Conference, with the theme of "Financial Crisis and Chemical Fiber Industry", was held at Hangzhou, Zhejiang Province. During the conferenc...On Jun. 10-12, 2009, The 15th China’s International Chemical Fiber Conference, with the theme of "Financial Crisis and Chemical Fiber Industry", was held at Hangzhou, Zhejiang Province. During the conference, the China Chemical Fiber Association released a speech on "The Impact of Global Financial Crisis on China Chemical Fiber Industry and Response Strategies". Here in the following part, we will focus on the part of the impact of financial crisis on Chinese chemical fiber industry. In our next issue, we will go on with the part of Response Strategies.展开更多
Prospects of Global Financial Crisis and Economic Crisis The widely spreading global financial crisis has halted the fast growth of world economy in five consecutive years,and heavily stricken the financial and econom...Prospects of Global Financial Crisis and Economic Crisis The widely spreading global financial crisis has halted the fast growth of world economy in five consecutive years,and heavily stricken the financial and economic sectors worldwide.It’s second only to the "Great Depression" in the 1930’s.Governments展开更多
From January to September,2017,the operation of the chemical fiber industry continued to keep an upward situation.As the textile industry got warmer,the demand of the chemical fiber industry had significant improvemen...From January to September,2017,the operation of the chemical fiber industry continued to keep an upward situation.As the textile industry got warmer,the demand of the chemical fiber industry had significant improvement.The entire operation rate of the industry has improved from that of the same period in the previous year.It was not slack in the chemical fiber market even in off seasons.In the third quarter。展开更多
基金Under the auspices of the National Natural Science Foundation of China(No.41901156,42071164)Project of the Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences(No.NIGLAS2019QD011)。
文摘China is in a transitional period between urban renewal and industrial change.In this period,the focus has been on the suburbanization of enterprises and land transformation in old industrial areas,particularly areas with chemical industries.A life cycle theoretical framework was established to develop chemical industrial zones in the context of urban expansion and land function conversion.The long-term historical processes and mechanisms that transformed a typical old chemical industry area along the Yangtze River,Yanziji Area of Nanjing City were unveiled and comparatively analyzed.The study found that the entire life cycle of the case study area was formed through the combined action of different influencing factors.Traditional industrial location factors played important roles during the rise and continuity of the chemical industry zone,while unconventional environmental regulations and government policies drove its decline and transformation.In the transformation of the old chemical zone,the renewal and redevelopment of industrial land into higher-value residential land is a key link determining the feasibility of government fund compensation and the circulation of capital.These findings demonstrate that regional control and environmental regulation play crucial roles in determining the location of polluting industries and the renewal of urban industrial areas.This research enhances the understanding of the development history and reconstruction of chemical industry clusters and plots within megacities at a finer geographic scale.
文摘Due to metal leaching and poor catalyst stability, the chemical industry's fine chemical and pharmaceutical sectors have been historically reluctant to use supported transition metal catalysts to manufacture fine chemicals and active pharmaceutical ingredients. With the advent of new generation supported metal catalysts and flow chemistry, we argue in this study, this situation is poised to quickly change. Alongside heterogenized metal nanoparticles, both single-site molecular and single-atom catalyst will become ubiquitous. This study offers a critical outlook taking into account both technical and economic aspects.
文摘Foreign-oriented Economy Entering a New Stage The Eighth Five-year Plan period saw the fastest development of the foreign-oriented economy in China’s chemical industry, with an accumulated import and export value of US$100 billion, including US$38.3 billion of exports. In 1996 the total import and export value reached US$30 billion, including US$12 billion of exports. Now, more than 300 chemical enterprises and institutes have obtained foreign
文摘China’s chemical industry is an important industrial sector in the national economy, closely related to other sectors and consumer markets. The industry produces agricultural chemicals made from coal, petroleum, natural gas, natural ore and biological substances, in addition to organic and inorganic raw materials, compound materials, fine chemicals, and chemicals for special purposes. The industry also uses
文摘At present,China is the world’s largest consumer of iron ore, nickel,copper,steel,coal and cement,and the world’s second largest consumer of oil,alumina,electricity and energy.Currently, China is creating 4～5% of the world’s GDP by consuming 8.92% of the world’s oil,32.1% of raw coal,30.7% of iron ore,28% of steel.20% of alumina and 50% of cement.
文摘Founded in 1958 and directly under the Ministry of the Chemical Industry, the Beijing Research Institute of the Chemical Industry (BRICI) engages in research and development in the fields of petrochemicals, fine chemicals, polymer synthesis and processing, and environmental protection. In the past 30 years or more, the institute has achieved many important scientific results of the State level, and it has signed in rccent years several hundred science and research contracts with
文摘At the beginning of 1995, Gu Xiulian, Minister of the Chemical Industry, gave a briefing to the media on the newly-drafted 9th Five-Year Plan(1996-2000) for China’s chemical industry. She said that unlike the past development plans under the planned economy system, the new plan orients the product mix, industry structure, enterprise structure and regional distribution to the needs of the domestic and world markets, and co-ordinates the development of state-
文摘The CCPIT Sub-council of Chemical Industry is a subsidiary of the China Council for the Promotion of International Trade and the China Chamber of International Commerce.
基金This work was supported by the Strategic Priority Research Program of Chinese Academy of Science(Grant no.XDA23040401).
文摘Constructed wetlands are commonly utilized to treat industrial wastewater due to their effectiveness,affordability,and environmental benefits.Many phosphorus chemical enterprises in the middle Yangtze River basin are facing high pollution load challenges and efforts are needed to improve removal efficiency of pollutants.This work was the first to use constructed wetlands for phosphorus chemical industry tailwater(PCITW)treatment.The new hybrid constructed wetlands(CWs)proposed were the aeration horizontal subsurface flow constructed wetland(AHSCW)and the integrated vertical flow constructed wetland(IVCW),which were constructed on a pilot scale.Here,the effectiveness of pollutant removal along hybrid CWs,wetland plant growth,and rootassociated microbial community responses to the PCITW were investigated.The results showed that there was spatial variation in removal of carbon,nitrogen,and phosphorus in the hybrid CWs,and that the AHSCW and the IVCW played synergistic roles in the removal of pollutants.Compared with influent,the toxic effect of effluent to embryos of a rare minnow(Gobiocypris rarus)was alleviated.Exposure to the effluent resulted in no malformation or death for embryos.Plants and microorganisms in the wetland system of the phosphate chemical tailwater were then compared with the control system of municipal tailwater.Plants in the former system had lower root density,and higher average root diameter,root shoot ratio,specific root length,and specific surface area.Plant roots also had decreased NH_(4)^(+)uptake ability but increased Ca^(2+)uptake to adapt to the high load and complex pollution stress.Unlike the control system,stochastic mechanisms had a more important role than deterministic processes in shaping the microbial community assembly associated with the PCITW.Meanwhile,analysis of microbial network-level topological characteristics demonstrated substantial reduction in network interactions complexity and microbiome stability in the treatment system.Findings from this study suggest wetlands will be helpful for efficient purification of phosphorus chemical industry wastewater in the Yangtze River basin.
基金This work was supported by the National Kry Technology R&D Program(No.2019YFC0408503)State Key Laboratory of Urban Water Resource and Environment(No.20180X09).
文摘Reverse osmosis(RO)is frequently used for water reclamation from treated wastewater or desalination plants.The RO concentrate(ROC)produced from the coal chemical industry(CCI)generally contains refractory organic pollutants and extremely high-concentration inorganic salts with a dissolved solids content of more than 20 g/L contributed by inorganic ions,such as Na^(+),Ca^(2+),Mg^(2+),Cl^(−),and SO_(4)^(2−).To address this issue,in this study,we focused on coupling forward osmosis(FO)with chemical softening(FO-CS)for the volume minimization of CCI ROC and the recovery of valuable resources in the form of CaCO_(3).In the case of the real raw CCI ROC,softening treatment by lime-soda ash was shown to effectively remove Ca^(2+)/Ba^(2+)(>98.5%)and Mg^(2+)/Sr^(2+)/Si(>80%),as well as significantly mitigate membrane scaling during FO.The softened ROC and raw ROC corresponded to a maximum water recovery of 86%and 54%,respectively.During cyclic FO tests(4×10 h),a 27%decline in the water flux was observed for raw ROC,whereas only 4%was observed for softened ROC.The cleaning efficiency using EDTA was also found to be considerably higher for softened ROC(88.5%)than that for raw ROC(49.0%).In addition,CaCO3(92.2%purity)was recovered from the softening sludge with an average yield of 5.6 kg/m^(3) treated ROC.This study provides a proof-of-concept demonstration of the FO-CS coupling process for ROC volume minimization and valuable resources recovery,which makes the treatment of CCI ROC more efficient and more economical.
文摘ON March 14, the evening of the Lantern Festival, I arrived at Gu Xiulian’s home punctually at 7 p.m., the chosen time for my interview. As I rang the doorbell, I felt a little nervous. The thought of interviewing this high ranking government official, who regularly appeared on television and whose speeches on chemical production could be read in the newspapers, was daunting. To my great surprise, as I entered the apartment, I smelled appetizing food and saw Gu in an apron, preparing
文摘China is a major exporter of lithopone, occupying 70% of the international market. In the 1990s the Guangzhou Huali Pigment Chemicals Industry Co. grasped the opportunity to revamp its installation to produce 50,000 tons of lithopone from the former output of 30,000 tons each year. It ranks first place among the enterprises of the same trade in the world. Its annual exports are 20,000 tons, 1/4 of China’s total. The company pays close attention on the namebrand strategy. The Baiyun-
文摘Under the pressure of the lasting-high prices of world oil and raw materials of chemical fiber, the increasingly serious environment of international textile trade, and the fluctuation of RMB exchange rate, China’s chemical fiber industry suffered some embarrassments in the first half year of 2005, but redeveloped in the other half.
文摘On Jun. 10-12, 2009, The 15th China’s International Chemical Fiber Conference, with the theme of "Financial Crisis and Chemical Fiber Industry", was held at Hangzhou, Zhejiang Province. During the conference, the China Chemical Fiber Association released a speech on "The Impact of Global Financial Crisis on China Chemical Fiber Industry and Response Strategies". Here in the following part, we will focus on the part of the impact of financial crisis on Chinese chemical fiber industry. In our next issue, we will go on with the part of Response Strategies.
文摘Prospects of Global Financial Crisis and Economic Crisis The widely spreading global financial crisis has halted the fast growth of world economy in five consecutive years,and heavily stricken the financial and economic sectors worldwide.It’s second only to the "Great Depression" in the 1930’s.Governments
文摘From January to September,2017,the operation of the chemical fiber industry continued to keep an upward situation.As the textile industry got warmer,the demand of the chemical fiber industry had significant improvement.The entire operation rate of the industry has improved from that of the same period in the previous year.It was not slack in the chemical fiber market even in off seasons.In the third quarter。
