Article
Engineering, Environmental
Raquel Greice de Souza Marotta Alfaia, Ronei de Almeida, Kleby Soares do Nascimento, Juacyara Carbonelli Campos
Summary: This study investigates the effects of landfill leachate pretreatment on the performance of NF and RO membranes. The results show that C/F pretreatment can significantly improve the permeate flux and reduce fouling resistance of certain membranes. It is recommended to pretreat the landfill leachate to mitigate membrane fouling.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Environmental Sciences
Yuansi Hu, Zhepei Gu, Junjie He, Qibin Li
Summary: Flocculation is an effective pretreatment technology for landfill leachate, but the effectiveness of the process is influenced by the operation sequence and the presence of colloidal instability. This study found that by separating the leachate and sludge first, and then adjusting the pH value to 9, the removal efficiency of organic matter from leachate can be significantly increased. This control strategy can provide theoretical and engineering references for the flocculation pretreatment of landfill leachate.
Article
Green & Sustainable Science & Technology
Radhakrishnan Naresh Kumar, Somya Sadaf, Mohini Verma, Shubhrasekhar Chakraborty, Shweta Kumari, Veerababu Polisetti, Parashuram Kallem, Jawed Iqbal, Fawzi Banat
Summary: The use of novel flocculants in combination with a sequencing batch reactor (SBR) has proven effective in reducing polluted effluents from landfill leachate and municipal wastewater. Co-treatment of landfill leachate with municipal wastewater in SBR, followed by coagulation-flocculation, achieved significant removal of COD, ammonia, nitrate, phosphate, turbidity, and TSS. The combined treatment with the new flocculants successfully met international standards for discharges to inland surface water.
Article
Engineering, Environmental
Siti Nor Farhana Zakaria, Hamidi Abdul Aziz, Maheera Mohamad
Summary: This research study investigates the effectiveness of zirconium tetrachloride (ZrCl4) and tin tetrachloride (SnCl4) as a coagulant in landfill leachate treatment. The combination treatment of SnCl4 as a coagulant with ozone (O-3) showed the highest removal of color and COD, as well as an improvement in the biodegradability ratio. Integrated treatment is found to be more effective than the coagulation-flocculation process alone in treating stabilized landfill leachate.
WATER ENVIRONMENT RESEARCH
(2022)
Article
Environmental Sciences
Anjali Bhagwat, Rajat Kumar, Chandra Shekhar Prasad Ojha, Mukesh Kumar Sharma, Apourv Pant, Babita Sharma, Jai Vir Tyagi
Summary: The leachates from landfills pose a potential contamination risk to surface and groundwater. As the landfill ages, the leachate's pH changes, affecting treatment methods. Ferric chloride is found to be the most efficient coagulant, surpassing Fenton. Switching to ferric chloride or Fenton treatment can significantly reduce operational costs compared to the current method used.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Shiwasish Singh Swar, Jarungwit Boonnorat, Anish Ghimire
Summary: This study aims to assess the potential of algae-based treatment of pretreated landfill leachate for the removal of conventional pollutants. The results show that the combined physicochemical and algal treatment can effectively remove pollutants from landfill leachate, offering an exciting alternative for its treatment.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Yalcin Gunes, Evren Sahinci, Elcin Gunes
Summary: This study investigated the effects of different treatment processes on the leachate from Tekirdag Province Municipal Sanitary Landfill in Tekirdag city. The Fenton process showed the best COD removal efficiency among all treatment methods.
ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL
(2021)
Article
Engineering, Chemical
O. Bouaouine, B. Ihsanne, C. Delmon, F. Louvet, F. Khalil
Summary: In this study, the best conditions for leachate treatment using coagulation-flocculation method with calcium hydroxide were determined using response surface methodology. The optimal values for pH, calcium hydroxide concentration, and stirring times were obtained through the central composite design. The results showed that these input parameters had a significant impact on leachate treatment efficiency, as measured by turbidity, absorbance, and sludge volume reduction. The use of the optimal conditions resulted in reliable and efficient pollutant elimination.
DESALINATION AND WATER TREATMENT
(2022)
Article
Engineering, Chemical
Roukaya Bouyakhsass, Salah Souabi, Safaa Khattabi Rifi, Soukaina Bouaouda, Abdeslam Taleb, Abdelaziz Madinzi, Tonni Agustiono Kurniawan, Abdelkader Anouzla
Summary: This study focuses on the treatment of landfill leachate using coagulation-flocculation and optimizing the process using central composite design and response surface methodology. The optimal conditions achieved high removal efficiencies for color, polyphenols, and nitrates. The findings offer an efficient and reliable approach to address the challenges of landfill leachate treatment and have important implications for liquid waste management.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Environmental Sciences
Sze Yin Cheng, Pau-Loke Show, Joon Ching Juan, Jo-Shu Chang, Beng Fye Lau, Sai Hin Lai, Eng Poh Ng, Haw Choon Yian, Tau Chuan Ling
Summary: The recent trend of recovering value-added products from wastewater requires more effective pre-treatment technology. It is crucial to optimize leachate treatment to facilitate downstream processing for energy production or value-added products, by using simple yet effective technology to remove pollutants with minimum chemical additives.
Article
Environmental Sciences
Abderrahim Idlahcen, Chaimae Radaa, Nadia Bougdour, Jallal Zoubir, Widad El Hayaoui, Naoual Tajat, Wail El Mouhri, Malika Tamimi, Samir Qourzal, Chafia Hajji, Ali Assabbane, Idriss Bakas
Summary: Landfilling is a widely used method for municipal solid waste disposal. Improperly treated leachate from landfills can pose serious risks to the environment and public health. This study focused on the use of bioflocculants and ferric chloride for coagulation-flocculation testing, which showed promising results in reducing COD and turbidity values.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Milad Ghaffariraad, Mehdi Ghanbarzadeh Lak
Summary: The study focused on using lime and walnut-shell for treating leachate, aiming to maximize COD and heavy metal removal efficiencies. The proposed process achieved 43.24% COD removal under optimal conditions, with effective removal of heavy metal concentrations.
ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Zhenyu Yan, Anjie Li, Hojae Shim, Danyang Wang, Shuqian Cheng, Yuexing Wang, Ming Li
Summary: In this study, the O3-PN-AMX biogranules process was used to effectively remove nitrogen from mature landfill leachate (MLL) without carbon addition and pH adjustment. The application of ozone pretreatment and granular sludge improved treatment efficiency and stability, providing a novel and effective operation strategy for nitrogen removal from MLL.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Environmental
Zhuwu Jiang, Hai Yu, Xiong Zhuo, Xue Bai, Jyunhong Shen, Hongyu Zhang
Summary: Aged landfill leachate with high ammonia concentration and poor biodegradability is difficult to treat. Researchers have successfully separated ammonia nitrogen from leachate using pilot-scale dynamic wave stripping equipment and established a mass transfer kinetic model for the dynamic wave stripping process.
Article
Engineering, Environmental
Yara L. Brasil, Ana F. R. Silva, Rosimeire F. Gomes, Miriam C. S. Amaral
Summary: A membrane bioreactor inoculated with commercial baker's yeast was assessed for landfill leachate treatment, showing high organic matter and ammonia removal at high COD/N ratios. Integration of AS/AB as pre-treatment of MBRy was found to be the best option. Temperature adjustment in AS operation also significantly promoted ammonia removal.
Article
Environmental Sciences
Zaidun Naji Abudi, Zhiquan Hu, Alkhafaji R. Abood, Dongqi Liu, Aiping Gao
WASTE AND BIOMASS VALORIZATION
(2020)
Article
Nanoscience & Nanotechnology
Xin Li, Yufang Liu, Hu Zhou, Chunlei Gao, Diansen Li, Yongping Hou, Yongmei Zheng
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Multidisciplinary
Yongping Hou, Yan Xing, Shile Feng, Chunlei Gao, Hu Zhou, Yongmei Zheng
ADVANCED MATERIALS INTERFACES
(2020)
Article
Energy & Fuels
Zaidun Naji Abudi, Zhiquan Hu, Alkhafaji R. Abood
Summary: This study evaluated the anaerobic batch co-digestion of mango leaves and pig manure at 37℃ and found that the addition of pig manure significantly improved methane production from mango leaves. The highest biodegradability and methane yield were obtained at a ratio of 1:3, which was higher than other mixing ratios. The cone model showed a better fit to the experimental data.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Nanoscience & Nanotechnology
Yufang Liu, Nan Yang, Chunlei Gao, Xin Li, Zhenyu Guo, Yongping Hou, Yongmei Zheng
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Nanoscience & Nanotechnology
Jinghui Li, Chunlei Gao, Wenle Pei, Zhenyu Guo, Lieshuang Zhong, Yufang Liu, Shaomin Wang, Yongping Hou, Yongmei Zheng
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Engineering, Environmental
Wenle Pei, Jinghui Li, Zhenyu Guo, Yufang Liu, Chunlei Gao, Lieshuang Zhong, Shaomin Wang, Yongping Hou, Yongmei Zheng
Summary: The study designed a unique three-dimensional superhydrophobic liquid-infused frame inspired by cactus spines and pitcher plants, which effectively captures and accelerates the growth and transport of droplets. The presence of nanospines increases capillary force and locks the lubricant on the frame, achieving high fog harvesting rate and efficiency with excellent cycling stability for fog harvesting applications.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Dunya Ahmed Khalaf, Zaidun Naji Abudi, Saadi Muhammed Dhaher
Summary: This study investigated the thermal and catalytic pyrolysis of shredded waste tire in a fixed bed reactor, exploring the effects of temperature and catalysts on the product yield distribution. Chemical analysis of the oil products revealed differences in composition based on the catalyst used.
JOURNAL OF ECOLOGICAL ENGINEERING
(2021)
Article
Energy & Fuels
Halah M. Qasim, Zaidun N. Abudi, Lubna A. Alzubaidi
Summary: This study assessed the potential of Conocarpus Erectus leaves to produce biochar as low-cost and environmentally friendly biosorbents for the removal of toxic metal ion Co(II). The magnetic biochar showed better adsorption effectiveness compared to original biochar due to its favorable magnetic properties, high surface area, and excellent adsorption capacity.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Biochemistry & Molecular Biology
Thamer Diwan, Zaidun N. Abudi, Mustafa H. Al-Furaiji, Arian Nijmeijer
Summary: In this study, various concentrations of electrospun and cast Polyacrylonitrile (PAN) membranes were compared in terms of surface morphology, wettability, and porosity. The results showed that increasing the PAN precursor solution concentration improves membrane performance by increasing surface roughness, hydrophilicity, and porosity. In general, the electrospun PAN membranes performed better than the cast PAN membranes in terms of water flux and oil rejection.
Article
Engineering, Environmental
Long Cheng, Mingyu Wei, Qixing Hu, Bingtang Li, Bo Li, Wenjia Wang, Zaidun Naji Abudi, Zhiquan Hu
Summary: This study investigated the establishment and stable operation of enhanced biological phosphorus removal by aerobic granular sludge under mixed stress conditions induced by multiple antibiotics. The results showed that the AGS system was efficient in removing TP, COD, and NH4+-N, and that the microorganisms in the AGS system secreted more polysaccharides, which contributed to the system's tolerance to antibiotics and facilitated granulation by enhancing protein production. The study proposed a three-stage granulation mechanism based on analysis of extracellular polymeric substances, XDLVO theory, and microbial community.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Lei Zhang, Bingcai Luo, Kun Fu, Chunlei Gao, Xuefeng Han, Maolin Zhou, Tiance Zhang, Lieshuang Zhong, Yongping Hou, Yongmei Zheng
Summary: The article presents a photothermal icephobic material with hierarchical structure that demonstrates both ultra-long icing delay ability and superior photothermal de-icing ability.
Article
Engineering, Chemical
Mohammed M. Hassan, Zaidun N. Abudi, Mustafa H. Al-Furaiji
Summary: In this study, flat-sheet membranes made from four different polymers at different concentrations were used for ultrafiltration in dye removal. The membranes with a concentration of 17% showed the best performance in water flux rate and dye rejection.
DESALINATION AND WATER TREATMENT
(2022)