4.7 Article

Purification mechanism of city tail water by constructed wetland substrate with NaOH-modified corn straw biochar

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Environmental Sciences

Study of the effect of pyrite and alkali-modified rice husk substrates on enhancing nitrogen and phosphorus removals in constructed wetlands

Sijia Jiang et al.

Summary: The study investigated the effects of using pyrite and alkali-modified rice husk as substrates for nitrogen and phosphorus removal in constructed wetlands. The results showed that alkali-modified rice husk had more advantages and could be used for low C/N ratio wastewater treatment. Additionally, the tidal flow mode enhanced nitrification and ammonium nitrogen removal rates, although the increase in dissolved oxygen was not sufficient to meet system requirements.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2022)

Article Environmental Sciences

Physicochemical modification of corn straw biochar to improve performance and its application of constructed wetland substrate to treat city tail water

Hanxi Wang et al.

Summary: This paper studied the modification methods of straw biochar and its application in constructed wetlands. It was found that the combination of freeze-thaw cycles and KMnO4 modification could cause destruction of the biochar structure, while other modifications had little effect on the structure and functional groups of the biochar. The adsorption capacity of CO2 increased for both freeze-thaw cycles modified biochar and H2SO4 and freeze-thaw cycles composite modified biochar.

JOURNAL OF ENVIRONMENTAL MANAGEMENT (2022)

Article Environmental Sciences

Study of the Relationship Between a Nutrient Element and Two Energy Elements During the Biochar Preparation Process

Shengnan Yuan et al.

Summary: The study investigated the relationship between nitrogen retention and carbon/hydrogen release during rice straw pyrolysis. It was found that there is a positive correlation between nitrogen and carbon/hydrogen release. Pre-treatment with alkaline solutions can effectively inhibit nitrogen loss, with higher concentrations yielding better results. The release of nitrogen-containing gases during pyrolysis followed the order of raw straw ≈ 0.15% KOH > 0.15% Ca(OH)2 > 0.15% NaOH.

WASTE AND BIOMASS VALORIZATION (2021)

Article Engineering, Environmental

Ammonium removal efficiency of biochar-based heterotrophic nitrifying bacteria immobilization body in water solution

Chaoxu Wang et al.

Summary: This study explored the performance of biochar-based microbial immobilization body in ammonium removal, identifying HNB as Pseudomonas and finding that NaOH- and NaOH+Mg2+-modified biochars had the highest NH4+ -N removal efficiency due to their significantly higher bacteria adsorption ability.

ENVIRONMENTAL ENGINEERING RESEARCH (2021)

Article Environmental Sciences

KOH-activated high surface area Douglas Fir biochar for adsorbing aqueous Cr(VI), Pb(II) and Cd(II)

Amali Herath et al.

Summary: Through KOH activation, high surface area Douglas fir biochar obtained from commercial syn-gas production shows remarkable enhancement in heavy metal adsorption capacity for Cr(VI), Pb(II) and Cd(II). The adsorption process follows pseudo-second order kinetics and the Langmuir adsorption model for all three metals. The desorption study reveals that Pb(II) adsorption onto KOH-activated biochar surface is reversible, while portions of Cd(II) and Cr(VI) adsorbed strongly onto the biochar cannot be desorbed by typical solutions.

CHEMOSPHERE (2021)

Review Green & Sustainable Science & Technology

Preparation of straw activated carbon and its application in wastewater treatment: A review

Hanxi Wang et al.

Summary: This study analyzed the abundance of plant straw resources and the performance of activated carbon; the conclusions indicated that using multiple activators can improve the quality of straw activated carbon and significantly affect the removal efficiency of heavy metal pollution; these research findings are expected to optimize the preparation conditions of activated carbon and expand its application range.

JOURNAL OF CLEANER PRODUCTION (2021)

Article

Study on ecological treatment of city tail water in China: a review

Hanxi Wang et al.

Arabian Journal of Geosciences (2021)

Article Engineering, Chemical

NaOH-modified mesoporous biochar derived from tea residue for methylene Blue and Orange II removal

Yongkang Mu et al.

Summary: The NaOH modified tea biochar showed promising adsorption capacities for dye removal, especially at higher pyrolysis temperatures, making it a cost-effective option for dye wastewater treatment.

CHEMICAL ENGINEERING RESEARCH & DESIGN (2021)

Article Agricultural Engineering

Effects of pollution load and salinity shock on nitrogen removal and bacterial community in two-stage vertical flow constructed wetlands

Zifang Chi et al.

Summary: The study demonstrates that TS-VFCWs exhibit different COD and nitrogen removal efficiencies under varying pollution loads and salinity shocks. TS-VFCWs with iron ore/wood chips and manganese ore/wood chips show distinct microbial communities and denitrification performance during nitrogen removal processes.

BIORESOURCE TECHNOLOGY (2021)

Article Environmental Sciences

Efficient utilization of Iris pseudacorus biomass for nitrogen removal in constructed wetlands: Combining alkali treatment

Xushun Gu et al.

Summary: The study found that alkali-treated aquatic plant biomass can significantly improve nitrogen removal efficiency and increase microbial richness, which is important for nitrogen removal and residue reduction in wetlands.

ENVIRONMENTAL POLLUTION (2021)

Article Environmental Sciences

Effect of modified biochar on the availability of some heavy metals speciation and investigation of contaminated calcareous soil

Zahra Dianat Maharlouei et al.

Summary: This study investigated the speciation of copper, lead, and cadmium in a modified biochar-amended soil in a long-term pot experiment, finding that biochar modified with NaOH was the most effective in reducing lead release and increasing residual form. The modified biochar also decreased cadmium concentration and increased copper concentration in corn plants, while reducing the translocation factor, with the lowest observed in NaOH-modified biochar.

ENVIRONMENTAL EARTH SCIENCES (2021)

Article Environmental Sciences

Nitrogen and phosphorus uptake and biomass production in four riparian plants grown in subsurface flow constructed wetlands for urban wastewater treatment

Abdeslam Ennabili et al.

Summary: The study found that Arundo donax has a higher growth rate and biomass production during the vegetation period, showing better retention of nitrogen and phosphorus, especially in tertiary treatment.

JOURNAL OF ENVIRONMENTAL MANAGEMENT (2021)

Article Environmental Sciences

Multi-metabolism regulation insights into nutrients removal performance with adding heterotrophic nitrification-aerobic denitrification bacteria in tidal flow constructed wetlands

Xu Tan et al.

Summary: This study demonstrated that the addition of heterotrophic nitrification-aerobic denitrification (HN-AD) bacteria in constructed wetlands significantly improved nutrient removal efficiency. By promoting NO3--N and NH4+-N removal, along with reducing phosphorus release, the HN-AD bacteria enhanced the performance of tidal flow constructed wetlands (TFCWs) in decentralized domestic sewage treatment. The study also highlighted the importance of metabolic pathways and microbial consortia in regulating multi-metabolism processes to enhance nutrient metabolism in TFCWs.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

Article Environmental Sciences

Efficiency and plant indication of nitrogen and phosphorus removal in constructed wetlands: A field-scale study in a frost-free area

Weifeng Ruan et al.

Summary: The study evaluated the efficiency of wastewater treatment in 15 rural and urban constructed wetlands in Guangdong Province, China. Results showed that the average removal rates of TN, TP, COD, and TSS were 40.0%, 45.2%, 41.1%, and 71.7%, respectively, indicating that under suitable climate conditions for wetland plant growth and adaptation, CW systems have a good performance in wastewater treatment.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

Review Environmental Sciences

Engineered biochars for recovering phosphate and ammonium from wastewater: A review

Muhammad Bilal Shakoor et al.

Summary: Biochar has been intensively studied for its potential applications in agricultural and environmental fields, particularly in recovering nutrients from wastewater. Engineered biochar with enhanced properties has been developed for better adsorption potential of nutrients in wastewater, and various modification methods have been reviewed for improving its adsorption capacity. The future prospects of using engineered biochar for phosphate and ammonium recovery from wastewater are promising, indicating its potential for sustainable and cost-effective nutrient recovery.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

Article Environmental Sciences

Investigation of technology for composting mixed deer manure and straw

Hanxi Wang et al.

Summary: Composting using deer manure and corn straw as raw materials was studied to determine optimal conditions for compost maturity. Results showed that initial moisture content had the greatest impact on compost maturity, followed by initial C/N ratio and particle size of straw. This study is an important reference for the utilization of compost derived from a mixture of livestock manure and straw.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2021)

Article Green & Sustainable Science & Technology

Operational modifications of a full-scale experimental vertical flow constructed wetland with effluent recirculation to optimize total nitrogen removal

Buthaina Mahfoud Al-Wahaibi et al.

Summary: A full-scale Vertical Flow Constructed Wetland (VFCW) project was implemented in Oman to provide a sustainable wastewater treatment solution. The study showed high removal rates for pollutants, but nitrogen removal still faced challenges, prompting the testing of various operational modifications to optimize treatment performance.

JOURNAL OF CLEANER PRODUCTION (2021)

Article Green & Sustainable Science & Technology

Dissimilatory nitrate reduction processes and corresponding nitrogen loss in tidal flow constructed wetlands

Manping Zhang et al.

Summary: The study found that denitrification is the main mechanism of nitrate reduction in constructed wetlands, with the majority of nitrogen gas produced through this process. The rates of three microbial nitrate reduction processes were significantly higher in the PA wetland than in the NP wetland. Additionally, nitrate plays a crucial role in the competition between DNRA and denitrification, while nitrite regulates anammox.

JOURNAL OF CLEANER PRODUCTION (2021)

Review Green & Sustainable Science & Technology

Clogging mechanisms of constructed wetlands: A critical review

Hanxi Wang et al.

Summary: This review provides a detailed analysis of the reasons, influencing factors, and regularities of CW clogging, offering important insights for addressing clogging issues. Proper selection of particle size and aquatic plants, as well as timely removal of dead roots, can reduce CW clogging significantly.

JOURNAL OF CLEANER PRODUCTION (2021)

Article Chemistry, Physical

Preparation of porous biochar based on pharmaceutical sludge activated by NaOH and its application in the adsorption of tetracycline

Huidong Liu et al.

Summary: The study prepared biochar from two different types of pharmaceutical sludge activated by NaOH using impregnation and dry mixing methods, analyzing their characteristics and adsorption efficiency for tetracycline. The results showed that biochar prepared by dry mixing activation method had better adsorption performance for tetracycline. The study provides valuable information on the use of biochar derived from pharmaceutical sludge for tetracycline removal from wastewater.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2021)

Article Engineering, Environmental

Cattle dung biochar-packed vertical flow constructed wetland for nutrient removal: Effect of intermittent aeration and wastewater COD/N loads on the removal process

Naveen Chand et al.

Summary: The study demonstrated that intermittent aeration in VFCWs significantly improved the removal efficiency of COD, NH4+-N, NO3-N, and TP compared to non-aerated setups, while setups with biochar (BC) addition and plantation were more advantageous in nutrient removal than those without BC. Moreover, the COD/N ratio of wastewater did not have a significant impact on VFCWs with BC and intermittent aeration, indicating the effectiveness of slow adsorption and fast aerobic degradation processes.

JOURNAL OF WATER PROCESS ENGINEERING (2021)

Article Engineering, Environmental

Alkaline modified biochar derived from spent coffee ground for removal of tetracycline from aqueous solutions

Van-Truc Nguyen et al.

Summary: The study investigated the feasibility of using alkaline modified-biochar prepared from pyrolysis of spent coffee grounds to eliminate tetracycline from different aqueous solutions. The results showed that the modified-biochar had a higher adsorption capacity for tetracycline compared to the non-modified biochar, making it a promising environmentally effective adsorbent. The study also examined the environmental factors that affect the interaction between biochar and tetracycline, such as pH and ions.

JOURNAL OF WATER PROCESS ENGINEERING (2021)

Article Plant Sciences

The Effect of Granular Activated Carbon and Biochar on the Availability of Cu and Zn to Hordeum sativum Distichum in Contaminated Soil

Marina Burachevskaya et al.

Summary: This study aimed to investigate the availability of Cu and Zn in contaminated soil and their impact on spring barley, finding that the application of carbon sorbents could improve the bioavailability of metals and reduce their toxic effects on spring barley.

PLANTS-BASEL (2021)

Article Environmental Sciences

Nitrogen and phosphorus removal in simulated wastewater by two aquatic plants

Jianling Xu et al.

Summary: Water pollution control, especially using aquatic plants for ecological water treatment, is effective and cost-efficient. The research on the two common aquatic plants in Northeast China showed high removal rates for nitrogen and phosphorus in wastewater, making them suitable for restoring urban lake water quality.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2021)

Review Engineering, Multidisciplinary

A review on defect assessment of pipelines: Principles, numerical solutions, and applications

Guojin Qin et al.

Summary: Research on defect assessment for pipelines has significantly advanced in the past decades, with the introduction of finite element analysis and multi-physics field coupling models. However, the use of Level 3 methods is limited by the requirement for strong academic background knowledge, and efforts should be made to develop a user-friendly platform for industry application in the future. Paying particular attention to defect assessment on pipeline welds is necessary for future work.

INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING (2021)

Article Environmental Sciences

Study on clogging mechanisms of constructed wetlands from the perspective of wastewater electrical conductivity change under different substrate conditions

Hanxi Wang et al.

Summary: The study found that the adsorption ability of substrate material is not the main factor affecting the EC of wastewater, but rather the soluble components within the material. Some materials have significant influence on the change of wastewater EC, which can be treated by modifying or controlling the mixing ratio. These results are significant in revealing the clogging state of CW system and conducting health assessment research.

JOURNAL OF ENVIRONMENTAL MANAGEMENT (2021)

Article Engineering, Environmental

Formation of nitrogen functionalities in biochar materials and their role in the mitigation of hazardous emerging organic pollutants from wastewater

Begum Baser et al.

Summary: Biochar, as a promising biomass-derived functional material, can be used as low-cost and environmentally-friendly catalysts for removing emerging organic pollutants (EOPs). This article discusses in-depth the synthetic strategies and formation mechanisms of nitrogen functionalities in biochar, as well as the factors affecting N-surface functionalities. The possible reaction mechanisms for EOPs removal driven by N-functionalities are also addressed.

JOURNAL OF HAZARDOUS MATERIALS (2021)

Article Green & Sustainable Science & Technology

Sustainable gasification biochar as a high efficiency adsorbent for CO2 capture: A facile method to designer biochar fabrication

Pavani Dulanja Dissanayake et al.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2020)

Article Environmental Sciences

Biochar Adsorption of Antibiotics and its Implications to Remediation of Contaminated Soil

Min Pan

WATER AIR AND SOIL POLLUTION (2020)

Article Environmental Sciences

Feasibility study on a new pomelo peel derived biochar for tetracycline antibiotics removal in swine wastewater

Dongle Cheng et al.

SCIENCE OF THE TOTAL ENVIRONMENT (2020)

Review Green & Sustainable Science & Technology

Preparation of straw biochar and application of constructed wetland in China: A review

Hanxi Wang et al.

JOURNAL OF CLEANER PRODUCTION (2020)

Article Environmental Sciences

Lead sorption by biochar produced from digestates: Consequences of chemical modification and washing

Suchanya Wongrod et al.

JOURNAL OF ENVIRONMENTAL MANAGEMENT (2018)

Article Engineering, Environmental

Magnetic biochar combining adsorption and separation recycle for removal of chromium in aqueous solution

Ouyang Xin et al.

WATER SCIENCE AND TECHNOLOGY (2017)

Article Engineering, Environmental

Life cycle environmental and economic performance of biochar compared with activated carbon: A meta-analysis

Hashim A. Alhashimi et al.

RESOURCES CONSERVATION AND RECYCLING (2017)

Article Chemistry, Multidisciplinary

Enhancement of As(V) adsorption from aqueous solution by a magnetic chitosan/biochar composite

Shaobo Liu et al.

RSC ADVANCES (2017)

Review Agricultural Engineering

Optimizations on supply and distribution of dissolved oxygen in constructed wetlands: A review

Huaqing Liu et al.

BIORESOURCE TECHNOLOGY (2016)

Article Ecology

Mitigating nutrient leaching from green roofs with biochar

Kirsi Kuoppamaki et al.

LANDSCAPE AND URBAN PLANNING (2016)

Review Environmental Sciences

Application of biochar for the removal of pollutants from aqueous solutions

Xiaofei Tan et al.

CHEMOSPHERE (2015)

Article Engineering, Environmental

Short-Term Effect of the Soil Amendments Activated Carbon, Biochar, and Ferric Oxyhydroxide on Bacteria and Invertebrates

Sarah E. Hale et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2013)

Article Engineering, Environmental

Nitrogen and phosphorus removal of locally adapted plant species used in constructed wetlands in China

Xia Yu et al.

WATER SCIENCE AND TECHNOLOGY (2012)

Review Chemistry, Physical

Gas adsorption characterization of ordered organic-inorganic nanocomposite materials

M Kruk et al.

CHEMISTRY OF MATERIALS (2001)