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Scientific and technological innovations of wastewater treatment in China

Frontiers of environmental Science & Engineering 2024年第6期18卷 43-48页

作者： Hui Huang Rui Ma Hongqiang Ren State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China

The“dual-carbon”strategy promotes the development of the wastewater treatment sector and is an important tool for leading science and technology *** on the global climate change and the new policies introduced by China,this paper described the new needs for the development of wastewater treatment science and *** offered a retrospective analysis of the historical trajectory of scientific and technological advancements in this *** bibliometrics,it delineated the research hotspots within wastewater treatment,notably highlighting materials genomics,artificial intelligence,and synthetic ***,it posited that,in the future,the field of wastewater treatment should follow the paths of technological innovations with multi-dimensional needs,such as carbon reduction,pollution reduction,health,standardisation,and *** purpose of this paper was to provide references and suggestions for scientific and technological innovations in the field of wastewater treatment,and to contribute to the common endeavor of moving toward a pollution-Free Planet.

关键词： Wastewater treatment Dual-carbon strategy Technological innovation Carbon reduction

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Enhancing corn stalk-based anaerobic digestion with different types of zero-valent iron added during the acidification stage:Performance and mechanism

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Journal of environmental Sciences 2024年第11期145卷 64-74页

作者： Xiang Liu Yue Liu Min Wang Qianzhen Deng Hao Yang College of Agricultural Science and Engineering Hohai UniversityNanjing 210098China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution Wenzhou UniversityWenzhou 325035China Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse Anhui Jianzhu UniversityHefei 230009China

Anaerobic digestion has been defined as a competitive approach to facilitate the recycling of corn ***,few studies have focused on the role of direct interspecies electron transfer(DIET)pathway in the acidification stage under the addition of different particle sizes of zero-valent iron(ZVI).In this study,three types of ZVI,namely iron filings,iron powder and nanoscale iron,were investigated,respectively,to enhance its high-value *** in volatile fatty acids(VFAs)and methane(CH4)production associated with the underlyingmechanisms were emphatically *** indicated that the addition of ZVI could increase the concentration of VFAs,with the most outstanding performance observed with the use of nanoscale ***,the conversion of propionic acid to acetic acid was driven by adding ZVI with no between-group differences in acidizing ***,the substrate was more fully utilized when supplied with iron powder compared with other groups in methanogenic phase,thereby displaying the maximumCH4 yield with a value of 263.1 mL/(g total solids(TS)).However,adding nanoscale iron could signally shorten the digestion time(T80),saving 7 days in comparison to the group of iron powder.

关键词： Zero-valent iron Corn stalk Anaerobic digestion Volatile fatty acids Methane

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Fabrication of straw-based graphene aerogels for oil/water separation: the effects of crude fiber fractions in straw

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environmental Science and pollution Research 2025年第1期32卷 43-55页

作者： Dan, Hongbing Gao, Yue Wei, Xianxiao Yue, Qinyan Gao, Baoyu Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse School of Environmental Science and Engineering Shandong University Jinan250100 China

Benefiting from its abundance, eco-friendliness, and sustainability, crop straw is considered a promising candidate combined with graphene oxide (GO) to fabricate straw-based graphene aerogels (SGAs) for oil/water separation. However, considering the complex composition of straw, the roles played by different crude fibers in straw in the formation of SGAs are still unclear. Herein, wheat straw (WS) was used in this work and pretreated with acid and alkali to regulate its crude fiber fractions. Then, it was crosslinked with GO to fabricate various SGAs for comparing their differences in the formation, structure, and oil/water separation performance. Results indicated that acid can remove plentiful hemicellulose from the WS (from 29.9 ± 2.1 to 7.0 ± 0.8 wt%) while retaining most lignin and cellulose;alkali can retain cellulose (from 32.4 ± 3.6 to 70.6 ± 1.3 wt%) while greatly removing lignin and hemicellulose. Ascribed to high BET surface area and porous structure, the graphene aerogels formed by acid-/alkali-treated WS demonstrated superior oil absorption capacity (AC-WSGA: 62.3–126.0 g/g and AL-WSGA: 66.3–125.2 g/g). The poor mechanical compressibility of AC-WSGA was caused by the high lignin residue (16.2 ± 0.7 wt%) in AC-WS. The maximum compressive stress for AL-WSGA under 60% strain was 1.6 kPa, ensuring it achieved recoverable oil-absorbing properties by extrusion. The above findings suggested that cellulose and hemicellulose in straw contributed to the formation of SGAs with abundant porous and compressible architecture, whereas the presence of lignin greatly increased the brittleness of SGAs and decreased their oil removal and recycling performances. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Aerogels

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Microbial Electrochemical Wastewater Refining

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Engineering 2025年第3期46卷 245-256页

作者： Na Chu Daping Li Raymond Jianxiong Zeng Yong Jiang Peng Liang Fujian Key Laboratory of Pollution Control and Resource Reuse College of Environmental and Resource SciencesFujian Normal UniversityFuzhou 350117China CAS Key Laboratory of Environmental and Applied Microbiology Environmental Microbiology Key Laboratory of Sichuan ProvinceChengdu Institute of BiologyChinese Academy of SciencesChengdu 610041China Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation College of Resources and EnvironmentFujian Agriculture and Forestry UniversityFuzhou 350002China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China

Wastewater treatment significantly contributes to greenhouse gas emissions,which are further exacerbated by the environmental impact of external chemical *** response,microbial electrochemical wastewater refining has gained prominence at the interdisciplinary frontier of wastewater resource recovery and green *** progress has been made in utilizing active electrodes to stimulate CO_(2) fixation rates,applying“binary electron donors”to produce high-value-added chemicals,and developing novel processes and *** review explores various aspects of microbial electrochemical wastewater refining,including microbial electrochemical monitoring of water quality,chemical synthesis from diverse carbon sources,and the deployment of pilot-scale systems for generating electricity,hydrogen,and methane,as well as for in-situ ***,it discusses the challenges and future directions,highlighting the importance of understanding mechanisms,advancing electrocatalyst and microbial engineering,and innovating hybrid *** conclusion,the widespread adoption of microbial electrochemical wastewater refining is emphasized for resource recovery and sustainable chemical production,ultimately reducing environmental impact.

关键词： Microbial electrosynthesis Extracellular electron transfer CO_(2)reduction Wastewater treatment resources recovery

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Combined effect of zinc and cadmium ions on nitrification performance during the biological nitrogen removal of simulated livestock breeding wastewater

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environmental Science and pollution Research 2024年第28期31卷 41155-41166页

作者： Wang, Zhanpeng Huang, Jian Zhang, Hua Luo, Tao He, Chunhua Department of Municipal Engineering School of Environmental and Energy Engineering Anhui Jianzhu University Hefei230601 China Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse Anhui Jianzhu University Hefei230009 China Anhui Research Academy of Ecological Civilization Hefei230601 China Joint Laboratory of Anhui Province for Pollution Control and Resource Utilization in Industrial Parks Hefei230041 China

Zinc and cadmium ions are usually found in livestock breeding wastewater, and the mixed ions will have an impact on the biological nitrogen removal. Nitrification performance plays an important role in biological nitrogen removal. In order to investigate the combined effect of zinc and cadmium ions on nitrification performance and to reveal the interactions between zinc and cadmium ions, three concentration ratios of zinc and cadmium ions, as well as 18 different concentration gradients were designed with the direct equipartition ray and the dilution factor method. The effect of pollutants on the nitrification performance of biological nitrogen removal was analyzed by the nonlinear regression equation, and the concentration-addition model was conducted to probe into the relationship between the mixed pollutants and the nitrification performance. The results showed that the effect on nitrification performance increased significantly with the increase of reaction duration and pollutant concentration, which indicated that the effects are concentration-dependent and time-dependent. The concentration-addition model suggested that the interactions between zinc and cadmium ions with different concentration ratios were mainly antagonistic, and as the percentage of cadmium ions in the mixtures increased, the antagonism between the mixtures became stronger. This study will provide a relevant theoretical basis for the regulation of the ratios and concentrations of heavy metal ions during the biological treatment of livestock breeding wastewater. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Wastewater treatment

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Effect and mechanism of Mn2+ on urease activity during anaerobic biological treatment of landfill leachate

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environmental Science and pollution Research 2024年第28期31卷 41290-41300页

作者： Liu, Hao Huang, Jian Zhang, Hua Xi, Shanshan Luo, Tao Jiang, Xinqin School of Environmental and Energy Engineering Anhui Jianzhu University 292 Ziyun Rd. Shushan District Anhui Province Hefei230601 China Anhui Provincial Key Laboratory of Environment Pollution Control and Resource Reuse Hefei230601 China Anhui Research Academy of Ecological Civilization Hefei230601 China

As a crucial hydrolytic enzyme, urease plays a vital role in anaerobic biological treatment. It is well-known that manganese ions are abundant in landfill leachate, but their concentration fluctuates significantly. However, few studies have investigated the effect and mechanism of different concentrations of Mn2+ on urease activity during anaerobic biological treatment of landfill leachate. This paper aimed to investigate the effects and mechanisms of different concentrations of Mn2+ on urease activity. The results showed that an appropriate amount of Mn2+ could significantly enhance urease activity, while a high concentration of Mn2+ could inhibit it. Insight into the mechanisms behind this phenomenon, various methods such as Zeta potential, particle size, ultraviolet spectroscopy, fluorescence spectroscopy, Fourier transform infrared spectroscopy, and statistical analysis were employed in our study. Research suggested that, on one hand, Mn2+ may form hydrogen bonds with the side chain amino or carboxyl groups of urease amino acid residues, affecting the structure of urease through hydrogen bonding. Additionally, Mn2+ also binds to urease through hydrophobic interactions. On the other hand, the C–OH and C-N functional groups in urease have a strong affinity for Mn2+, and changes in these functional groups can greatly enhance the activity of urease. Furthermore, under the action of high concentrations of Mn2+, while the structure of urease becomes more stable, there is also a steric hindrance phenomenon that affects the substrate from entering the catalytic center. Therefore, studying the mechanism of Mn2+ affecting urease activity has significant biological significance and provides a new perspective for exploring the impact of metals on anaerobic bioprocessing of landfill leachate. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Fourier transform infrared spectroscopy

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"Forever chemicals":a sticky environmental problem

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Frontiers of environmental Science & Engineering 2024年第10期18卷 175-183页

作者： Junhua Fang Shaolin Li Rongliang Qiu Wei-Xian Zhang College of Environmental Science and Engineering State Key Laboratory of Pollution Control and Resource ReuseTongji UniversityShanghai 200092China Guangdong Laboratory for Lingnan Modern Agriculture Guangzhou 510642China College of Natural Resources and Environment Guangdong Provincial Key Laboratory of Agricultural&Rural Pollution Abatement and Environmental SafetySouth China Agricultural UniversityGuangzhou 510642China

The discovery and widespread use of per-and poly-fluoroalkyl substances(PFAS)have exemplified the beneficial role of chemistry in modern life,yet *** also underscored significant environmental and health *** "forever chemicals"due to their remarkable persistence,PFAS present formidable challenges in terms of contamination and *** to address these challenges have led to the development of innovative degradation technologies,such as hydrothermal alkali treatment(HALT),low-temperature mineralization,and mechanochemical degradation,offering promising solutions to PFAS ***,these advancements must be accompanied by robust investment in research,collaboration among stakeholders,and global responsibility to ensure effective management of PFAs contamination and mitigate its adverse impacts on ecosystems and humanhealth.

关键词： PFAS Degradation technologies environmental remediation Global responsibility

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Synergistic effects of peroxydisulfate on UV/O_(3) process for tetracycline degradation:Mechanism and pathways

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Chinese Chemical Letters 2024年第10期35卷 408-413页

作者： Fengrui Yang Debing Wang Xinying Zhang Jie Zhang Zhichao Wu Qiaoying Wang State Key Laboratory of Pollution Control and Resource Reuse Shanghai Institute of Pollution Control and Ecological SecuritySchool of Environmental Science and EngineeringTongji UniversityShanghai 200092China Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology College of Environment&Safety EngineeringFuzhou University.Fuzhou 350108China

Tetracycline(TC)as a typical emerging pollutant is becoming a serious threat to the environment and human health.A combined advanced oxidation technology of UV/Ozone(O_(3))/peroxydisulfate(PDS)process was developed to explore an efficient and economic treatment process of TC in ***,the reactive sites and transformation pathways of TC were explored and the toxicity of the intermediates was quantified with a quantitative structure-activity relationship(QSAR)*** degradation performance of TC was substantially enhanced in UV/O_(3)/PDS process with a kobsof 0.0949 min-1,which was 2.3 times higher than UV/O_(3)and 3.2 times than sole *** results demonstrated that there was a superior synergistic effect of PDS on UV/O_(3)processes for the degradation of *** paramagnetic resonance(EPR)analysis and quenching experiments show that·OH,SO_(4)·-,O_(2)·-and1O_(2)all contributed to TC degradation in the UV/O_(3)/PDS process and exhibited a synergistic effect,which inhibited the generation of harmful *** addition,the UV/O_(3)/PDS system can effectively degrade TC in a wide range of substrate concentrations and pH,and also showed excellent adaptability to various concentrations of anions(Cl-and HCO_(3)-).This study proves the feasibility of UV/O_(3)/PDS process for treating TC contaminated wastewater with complicated water matrix.

关键词： UV/ozonation/peroxydisulfate Synergistic effect Tetracycline Degradation Wastewater

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Fabrication of a novel electrochemical sensor based on MnFe_(2)O_(4)/graphene modified glassy carbon electrode for the sensitive detection of bisphenol A

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Journal of Central South University 2024年第6期31卷 1856-1869页

作者： GAO Si-lei TANG Jian-she XIANG Li LONG Jin-wei Department of Environmental and Energy Engineering Anhui Jianzhu UniversityHefei 230601China Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse Hefei 230601China

Manganese ferrite(MnFe_(2)O_(4))has the advantages of simple preparation,high resistivity,and high crystal ***,we have developed an electrochemical sensor utilizing graphene and MnFe_(2)O_(4) nanocomposites modified glassy carbon electrode(GCE),which is very efficient and sensitive to detect bisphenol A(BPA).MnFe_(2)O_(4)/graphene(GR)was synthesized by immobilizing the MnFe_(2)O_(4) microspheres on the graphene nanosheets via a simple one-pot solvothermal *** morphology and structure of the MnFe_(2)O_(4)/GR nanocomposite have been characterized through scanning electron microscopy(SEM),Fourier transform infrared spectroscopy(FT-IR),X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS).In addition,electrochemical properties of the modified materials are comparably explored by means of cyclic voltammetry(CV),electrochemical impedance spectroscopy(EIS)and differential pulse voltammetry(DPV).Under the optimal conditions,the proposed electrochemical sensor for the detection of BPA has a linear range of 0.8-400μmol/L and a detection limit of 0.0235μmol/L(S/N=3)with high sensitivity,good selectivity and high *** addition,the proposed sensor was used to measure the content of BPA in real water samples with a recovery rate of 97.94%-104.56%.At present,the synthesis of MnFe_(2)O_(4)/GR provides more opportunities for the electrochemical detection of BPA in practical applications.

关键词： MnFe_(2)O_(4) graphene electrochemical sensor bisphenol A

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The Future of environmental Engineering Technology:A Disruptive Innovation Perspective

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Engineering 2024年第10期41卷 153-160页

作者： Hui Huang Junjie Lu Lili Jin Hongqiang Ren State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China

Scientific and technological revolutions and industrial transformations have accelerated the rate of innovation in environmental engineering ***,few researchers have evaluated the current status and future trends of *** paper summarizes the current research status in eight major subfields of environmental engineering—water treatment,air pollution control,soil/solid waste management,environmental biotechnology,environmental engineering equipment,emerging contaminants,synergistic reduction of pollution and carbon emissions,and environmental risk and intelligent management—based on bibliometric analysis and future trends in greenization,low carbonization,and *** technologies are further identified based on discontinuous transformation,and ten such technologies are proposed,covering general and specific fields,technical links,and value ***,the background and key innovations in disruptive technologies are elucidated in *** study not only provides a scientific basis for strategic decision-making,planning,and implementation in the environmental engineering field but also offers methodological guidance for the research and determination of breakthrough technologies in other areas.

关键词： environmental engineering technology Disruptive innovation Bibliometric analysis Discontinuous transformation

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