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Easily-manufactured paper-based materials with high porosity for adsorption/separation applications in complexwastewater

《化学科学与工程前沿（英文）》 2023年 第17卷 第7期   页码 830-839 doi: 10.1007/s11705-022-2267-7

摘要： A multi-functional porous paper-based material was prepared from grass pulp by simple pore-forming and green cross-linking method. As a pore-forming agent, calcium citrate increased the porosity of the paper-based material from 30% to 69% while retaining the mechanical strength. The covalent cross-linking of citric acid between cellulose fibers improved both the wet strength and adsorption capacity. In addition, owing to the introduction of high-content carboxyl groups as well as the construction of hierarchical micro-nano structure, the underwater oil contact angle was up to 165°. The separation efficiency of the emulsified oil was 99.3%, and the water flux was up to 2020 L·m–2·h–1. The theoretical maximum adsorption capacities of cadmium ion, lead ion and methylene blue reached 136, 229 and 128.9 mg·g–1, respectively. The continuous purification of complex wastewater can be achieved by using paper-based materials combined with filtration technology. This work provides a simple, low cost and environmental approach for the treatment of complex wastewater containing insoluble oil, organic dyes, and heavy metal ions.

关键词： adsorption     oil–water separation     underwater superoleophobicity     wastewater treatment    

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Diffusion of municipal wastewater treatment technologies in China: a collaboration network perspective

Yang Li, Lei Shi, Yi Qian, Jie Tang

《环境科学与工程前沿（英文）》 2017年 第11卷 第1期 doi: 10.1007/s11783-017-0903-0

摘要： Real wastewater treatment technology diffusion process was investigated. The research is based on a dataset of 3136 municipal WWTPs and 4634 organizations. A new metric was proposed to measure the importance of a project in diffusion. Important projects usually involve central organizations in collaboration. Organizations become more central by participating in less important projects. The diffusion of municipal wastewater treatment technology is vital for urban environment in developing countries. China has built more than 3000 municipal wastewater treatment plants in the past three decades, which is a good chance to understand how technologies diffused in reality. We used a data-driven approach to explore the relationship between the diffusion of wastewater treatment technologies and collaborations between organizations. A database of 3136 municipal wastewater treatment plants and 4634 collaborating organizations was built and transformed into networks for analysis. We have found that: 1) the diffusion networks are assortative, and the patterns of diffusion vary across technologies; while the collaboration networks are fragmented, and have an assortativity around zero since the 2000s. 2) Important projects in technology diffusion usually involve central organizations in collaboration networks, but organizations become more central in collaboration by doing circumstantial projects in diffusion. 3) The importance of projects in diffusion can be predicted with a Random Forest model at a good accuracy and precision level. Our findings provide a quantitative understanding of the technology diffusion processes, which could be used for water-relevant policy-making and business decisions.

关键词： Innovation diffusion     Collaboration network     Wastewater treatment plant     Complex network     Data driven    

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Beta-cyclodextrin adsorbents to remove water pollutants—a commentary

《化学科学与工程前沿（英文）》 2022年 第16卷 第9期   页码 1407-1423 doi: 10.1007/s11705-022-2146-2

摘要： Beta-cyclodextrin-based adsorbent is a promising adsorbent because it has unique characteristics and able to form host-guest complexes with various organic compounds. Adsorption using beta-cyclodextrin-based adsorbent has continuously improved by various preparation strategies and crosslinking agents. This commentary aims to highlight the preparation strategies, properties, and adsorption mechanisms of beta-cyclodextrin-based adsorbents. The adsorbents can be generally classified according to the preparation methods and display high adsorption capacity especially for dyes. Particularly, composite/nanocomposite beta-cyclodextrin-based adsorbents exhibit outstanding adsorption capacity even though the surface area is lower than that of porous and magnetic beta-cyclodextrin-based adsorbents. The beta-cyclodextrin/chitosan functionalized graphene oxide hydrogel with specific surface of 17.6 m2·g–1 yields an extraordinarily maximum adsorption capacity of 1499 mg·g–1 methylene blue, while beta-cyclodextrin/chitosan modified with iron(II, III) oxide nanoparticles displays a much greater maximum adsorption capacity at 2780 mg·g–1. The hydrophobic interaction, functional groups, hydrogen bonding, and electrostatic interaction govern the adsorption to a greater capacity. Although this commentary is not exhaustive, the preparation strategies and illustrated mechanisms provide useful insights into the adsorbent–adsorbate interactions, cost-effective analysis, challenges, and future directions of beta-cyclodextrin-based adsorbents in wastewater treatment.

关键词： beta-cyclodextrin adsorbent     adsorption     inclusion complex     mechanism     water pollutant     wastewater treatment    

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Occurrence and migration of microplastics and plasticizers in different wastewater and sludge treatmentunits in municipal wastewater treatment plant

《环境科学与工程前沿（英文）》 2022年 第16卷 第11期 doi: 10.1007/s11783-022-1577-9

摘要：

● Reduce the quantifying MPs time by using Nile red staining.

关键词： Microplastics     Municipal wastewater treatment plant     Phthalate esters     Thermal hydrolysis    

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Microplastics in municipal wastewater treatment plants: a case study of Denizli/Turkey

《环境科学与工程前沿（英文）》 2023年 第17卷 第8期 doi: 10.1007/s11783-023-1699-8

摘要：

● High amounts of microplastics are released to receiving media from WWTPs.

关键词： Microplastics     Wastewater treatment plant     Removal efficiency     Daily discharge    

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Integrated energy view of wastewater treatment: A potential of electrochemical biodegradation

《环境科学与工程前沿（英文）》 2022年 第16卷 第4期 doi: 10.1007/s11783-021-1486-3

摘要：

• Energy is needed to accelerate the biological wastewater treatment.

关键词： Biological wastewater treatment     Integrated energy view     Electroactive bacteria     Extracellular electron transfer    

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Photosensitivity sources of dissolved organic matter from wastewater treatment plants and their mediation

《环境科学与工程前沿（英文）》 2023年 第17卷 第6期 doi: 10.1007/s11783-023-1669-1

摘要：

● EE2 photodegradation behavior in the presence of four WWTPs’ DOM was explored.

关键词： Photosensitivity sources     17α-ethinylestradiol     Photodegradation     Dissolved organic matter     Wastewater treatment plants    

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Lignin-based electrospun nanofiber membrane decorated with photo-Fenton Ag@MIF-100(Fe) heterojunctions for complexwastewater remediation

《化学科学与工程前沿（英文）》 2023年 第17卷 第7期   页码 930-941 doi: 10.1007/s11705-023-2309-9

摘要： Membrane technology for wastewater remediation has aroused wide interest owing to its unique properties and potential applications. However, it remains challenging to explore green, efficient and robust membrane material and technique for complex wastewater treatment. Herein, we proposed using a simple electrospinning and in situ seeding method to fabricate a lignin-based electrospun nanofiber membrane (LENM) decorated with photo-Fenton Ag@MIL-100(Fe) heterojunctions for efficient separation of oil/water emulsions and degradation of organic dye. Thanks to the embedded lignin in LENM, an ultrahigh MIL-100(Fe) loading (53 wt %) with good wettability and high porosity was obtained. As a result, the hybrid Ag@MIL-100(Fe)/LENM exhibited excellent oil/water emulsions separation efficiency (more than 97%) without a compromise of water flux. Moreover, the hybrid membrane showed an excellent dye removal with degradation of 99% methylene blue within 30 min under illumination, which is attributed to a synergy of dye adsorption/enrichment and photo-Fenton catalytic degradation from Ag@MIL-100(Fe). Therefore, the lignin-based photo-Fenton hybrid membrane can lay the foundation for the preparation and application of green, sustainable and versatile membrane materials and technologies for efficient complex wastewater remediation.

关键词： lignin     electrospinning     heterojunctions     photo-Fenton catalysis     wastewater remediation    

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Impacts of advanced treatment processes on elimination of antibiotic resistance genes in a municipalwastewater treatment plant

Lian Yang, Qinxue Wen, Zhiqiang Chen, Ran Duan, Pan Yang

《环境科学与工程前沿（英文）》 2019年 第13卷 第3期 doi: 10.1007/s11783-019-1116-5

摘要：

The distributions of ARGs were monitored in a WWTP in Harbin during six months.

CASS had the best removal efficacy of ARGs compared to other processes in the WWTP.

UV disinfection could effectively control the HGT.

AGAC significantly remove ARGs and organics due to its high absorption capacity.

Combination of ozone and AGAC significantly improve removal of ARGs and organics.

关键词： Antibiotic resistance genes (ARGs)     Wastewater treatment plant (WWTP)     Ultraviolet (UV)     Ozonation     Granular activated carbon (GAC)    

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Membrane bioreactors for hospital wastewater treatment: recent advancements in membranes and processes

《化学科学与工程前沿（英文）》 2022年 第16卷 第5期   页码 634-660 doi: 10.1007/s11705-021-2107-1

摘要： Discharged hospital wastewater contains various pathogenic microorganisms, antibiotic groups, toxic organic compounds, radioactive elements, and ionic pollutants. These contaminants harm the environment and human health causing the spread of disease. Thus, effective treatment of hospital wastewater is an urgent task for sustainable development. Membranes, with controllable porous and nonporous structures, have been rapidly developed for molecular separations. In particular, membrane bioreactor (MBR) technology demonstrated high removal efficiency toward organic compounds and low waste sludge production. To further enhance the separation efficiency and achieve material recovery from hospital waste streams, novel concepts of MBRs and their applications are rapidly evolved through hybridizing novel membranes (non hydrophilic ultrafiltration/microfiltration) into the MBR units (hybrid MBRs) or the MBR as a pretreatment step and integrating other membrane processes as subsequent secondary purification step (integrated MBR-membrane systems). However, there is a lack of reviews on the latest advancement in MBR technologies for hospital wastewater treatment, and analysis on its major challenges and future trends. This review started with an overview of main pollutants in common hospital wastewater, followed by an understanding on the key performance indicators/criteria in MBR membranes (i.e., solute selectivity) and processes (e.g., fouling). Then, an in-depth analysis was provided into the recent development of hybrid MBR and integrated MBR-membrane system concepts, and applications correlated with wastewater sources, with a particular focus on hospital wastewaters. It is anticipated that this review will shed light on the knowledge gaps in the field, highlighting the potential contribution of hybrid MBRs and integrated MBR-membrane systems toward global epidemic prevention.

关键词： membrane technology     membrane bioreactor     hospital wastewater     hybrid MBR     integrated MBR-membrane system    

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Recent advances in membrane bioreactor technology for wastewater treatment in China

Xia HUANG, Kang XIAO, Yuexiao SHEN

《环境科学与工程前沿（英文）》 2010年 第4卷 第3期   页码 245-271 doi: 10.1007/s11783-010-0240-z

摘要： Since the introduction of the membrane bioreactor (MBR) in China in the early 1990s, remarkable progress has been achieved on the research and application of this technology. China has now become one of the most active fields in the world in this regard. This review outlines the development of MBR-based processes in China and their performance of treating municipal and industrial wastewaters. Since membrane fouling is a critical operational problem with MBR processes, this paper also proposes updated understanding of fouling mechanisms and strategies of fouling control, which are mainly compiled from publications of Chinese researchers. As for the commercial application of MBR in the country, the latest statistics of large-scale MBR plants (>10000 m·d) are provided, and the growth trend of total treatment capacity as well as its driving force is analyzed.

关键词： membrane bioreactor (MBR)     municipal wastewater treatment     industrial wastewater treatment     membrane fouling     commercial application     China    

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Decentralized wastewater treatment technologies and management in Chinese villages

Xuesong GUO,Zehang LIU,Meixue CHEN,Junxin LIU,Min YANG

《环境科学与工程前沿（英文）》 2014年 第8卷 第6期   页码 929-936 doi: 10.1007/s11783-013-0623-z

摘要： Problems treating sewage in rural areas in China have attracted increasing attention in recent years. However, only 6% of rural areas had spray drainage and wastewater treatment systems by the end of 2010. It is necessary to assess the technologies currently used so that sewage treatment in rural areas can be developed appropriately, to provide reliable and affordable wastewater treatment, in these areas. We evaluated the sewage treatment technologies currently used in rural areas by conducting case studies on 62 facilities that had each been operating for at least one year. Our study was carried out between 2009 and 2011, and the aim was to assess the situation during that period and assess any problems involved in decentralized sewage treatment in villages. We found that decentralized sewage treatment is the most popular wastewater treatment method in villages, and that the most common primary treatment technology used in rural areas is the septic tank. Our investigation highlights the need to establish standards for assessing effluent quality, including a range of target pollutants. Our results also show that effluents should be reused to meet the local environmental requirements in different areas, especially in ecologically sensitive areas.

关键词： decentralized treatment     strategy     sustainable development     village     wastewater treatment situation    

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Development and application of some renovated technologies for municipal wastewater treatment in China

QIAN Yi, WEN Xianghua, HUANG Xia

《环境科学与工程前沿（英文）》 2007年 第1卷 第1期   页码 1-12 doi: 10.1007/s11783-007-0001-9

摘要： China has been experiencing fast economic development in recent decades at the cost of serious environmental deterioration. Wastewater discharge, especially municipal wastewater discharge, and non-point pollution sources are becoming the major water pollution source and research focus. Great efforts have been made on water pollution control and a number of renovated technologies and processes for municipal wastewater treatment and reclamation as well as non-point pollution control have been developed and applied in China. This paper discusses the development and application of the appropriate technologies, including natural treatment systems, anaerobic biological treatment, biofilm reactors and wastewater reclamation technologies, for water pollution control in the country.

关键词： reclamation     Wastewater discharge     renovated     biological treatment     application    

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Energy neutrality potential of wastewater treatment plants: A novel evaluation framework integrating

《环境科学与工程前沿（英文）》 2022年 第16卷 第9期 doi: 10.1007/s11783-022-1549-0

摘要：

• Framework of indicators was established based on energy efficiency and recovery.

关键词： Wastewater treatment plants     Energy neutrality potential     Energy efficiency     Energy recovery     Evaluation framework    

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Application of electrode materials and catalysts in electrocatalytic treatment of dye wastewater

《化学科学与工程前沿（英文）》 2021年 第15卷 第6期   页码 1427-1443 doi: 10.1007/s11705-021-2108-0

摘要： The dye industry produces a large amount of hazardous wastewater every day worldwide, which brings potential threaten to the global environment. As an excellent method for removal of water chroma and chemical oxygen demand, electrocatalytic methods are currently widely used in the treatment of dye wastewater. The selection and preparation of electrode materials and electrocatalysts play an important role on the electrocatalytic treatment. The aim of this paper is to introduce the most excellent high-efficiency electrode materials and electrocatalysts in the field of dye wastewater treatment. Many electrode materials such as metal electrode materials, boron-doped diamond anode materials and three-dimensional electrode are introduced in detail. Besides, the mechanism of electrocatalytic oxidation is summarized. The composite treatment of active electrode and electrocatalyst are extensively examined. Finally, the progress of photo-assisted electrocatalytic methods of dye wastewater and the catalysts are described.

关键词： electrocatalytic oxidation     electrode     electrocatalysis     dye wastewater    

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标题 作者 时间 类型 操作

Easily-manufactured paper-based materials with high porosity for adsorption/separation applications in complexwastewater

期刊论文

Diffusion of municipal wastewater treatment technologies in China: a collaboration network perspective

Yang Li, Lei Shi, Yi Qian, Jie Tang

期刊论文

Beta-cyclodextrin adsorbents to remove water pollutants—a commentary

期刊论文

Occurrence and migration of microplastics and plasticizers in different wastewater and sludge treatmentunits in municipal wastewater treatment plant

期刊论文

Microplastics in municipal wastewater treatment plants: a case study of Denizli/Turkey

期刊论文

Integrated energy view of wastewater treatment: A potential of electrochemical biodegradation

期刊论文

Photosensitivity sources of dissolved organic matter from wastewater treatment plants and their mediation

期刊论文

Lignin-based electrospun nanofiber membrane decorated with photo-Fenton Ag@MIF-100(Fe) heterojunctions for complexwastewater remediation

期刊论文

Impacts of advanced treatment processes on elimination of antibiotic resistance genes in a municipalwastewater treatment plant

Lian Yang, Qinxue Wen, Zhiqiang Chen, Ran Duan, Pan Yang

期刊论文

Membrane bioreactors for hospital wastewater treatment: recent advancements in membranes and processes

期刊论文

Recent advances in membrane bioreactor technology for wastewater treatment in China

Xia HUANG, Kang XIAO, Yuexiao SHEN

期刊论文

Decentralized wastewater treatment technologies and management in Chinese villages

Xuesong GUO,Zehang LIU,Meixue CHEN,Junxin LIU,Min YANG

期刊论文

Development and application of some renovated technologies for municipal wastewater treatment in China

QIAN Yi, WEN Xianghua, HUANG Xia

期刊论文

Energy neutrality potential of wastewater treatment plants: A novel evaluation framework integrating

期刊论文

Application of electrode materials and catalysts in electrocatalytic treatment of dye wastewater

期刊论文