Article
Green & Sustainable Science & Technology
Song Cheng, Baolin Xing, Changliang Shi, Yanhe Nie, Hongying Xia
Summary: A low-cost and selective adsorbent CC-CCW@DM was prepared by modifying crofton weed with 1,3-diaminoguanidine monohydrochloride for efficient removal of Pb(II). The adsorbent showed good selectivity and high adsorption capacity for Pb(II) removal, with recycling experiments demonstrating its cost-saving potential.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Geosciences, Multidisciplinary
Bing Bai, Fan Bai, Chenmiao Sun, Qingke Nie, Shuo Sun
Summary: This study discusses the adsorption capacity of oyster shell powders (SPs) and the adsorption mechanism of heavy metal ions (HMs; i.e., cadmium ions Cd2+ and lead ions Pb2+) on SPs through adsorption kinetics tests, adsorption-desorption tests, scanning electron microscopy, and Fourier transform infrared spectroscopy. The effects of seepage velocity, heavy metal types, and SP addition amount/concentration on the adsorption performance of SPs in treating HMs in laterite and quartz sand were analyzed. The research findings indicate that SPs have high purification efficiency for HMs in contaminated soils.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Biotechnology & Applied Microbiology
Liangqian Fan, Jiaxin Miao, Jingrui Yang, Xiaoqing Zhao, Weijuan Shi, Maozhu Xie, Xianda Wang, Wei Chen, Xiaochan An, Hongbing Luo, Dandan Ma, Lin Cheng
Summary: Crofton weed was found to be an effective biosorbent for the removal of Cu(II) from aqueous solution, with ion exchange and electrostatic adsorption as the main adsorption mechanisms. The reusability of Crofton weed biosorbent was demonstrated through multiple adsorption-desorption cycles, indicating its feasibility for practical applications in wastewater treatment.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Environmental Sciences
Yanlan Xie, Guolin Zhou, Xingxue Huang, Xiupeng Cao, Anhua Ye, Yaohua Deng, Junhong Zhang, Chufa Lin, Runhua Zhang
Summary: The study found that the physicochemical properties of biochar changed significantly during field aging, leading to enhanced adsorption of heavy metals but reduced stability in passivating heavy metal ions.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Chemistry, Applied
Yuru Yang, Lei Zeng, Zongkun Lin, Huabin Jiang, Aiping Zhang
Summary: A chitosan-based bead was synthesized by crosslinking and sulfhydryl modification reaction, with good removal ability for heavy metal ions Pb2+, Cu2+, and Cd2+. The adsorption process of the beads fits the Langmuir isotherm model and pseudo second-order kinetics model.
CARBOHYDRATE POLYMERS
(2021)
Article
Environmental Sciences
F. J. Osuna, E. Pavon, M. D. Alba
Summary: This study investigated the feasibility of a new family of nanomaterials, swelling high charge micas, in removing Pb2+, Cd2+ and Hg2+ from aqueous solutions. Experimental results demonstrated that these micas are efficient heavy metal adsorbents, with Na-M2 being the best adsorbent for Pb2+ and Cd2+, and MEA-M2 for Hg2+.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Hewei Song, Congcong Wang, Amit Kumar, Yang Ding, Shuo Li, Xue Bai, Ting Liu, Jili Wang, Yuling Zhang
Summary: This study enriched a group of high efficiency urease bacteria (UF1) and loaded it on the surface of scoria to synthesize a novel microbial adsorbent (Scoria@UF1) for adsorbing Pb2+ and Cd2+ ions in contaminated water. The adsorption behavior of Scoria@UF1 for Pb2+ and Cd2+ was consistent with Langmuir isothermal model and showed the pseudo-first-order adsorption kinetics model. Additionally, the study confirmed that the UF1 community mainly consisted of Proteobacteria and Firmicutes, and the addition of Pb2+ and Cd2+ ions decreased the community diversity of UF1.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Review
Chemistry, Multidisciplinary
Mekonnen Maschal Tarekegn, Andualem Mekonnen Hiruy, Ahmed Hussen Dekebo
Summary: Nano zero valent iron (nZVI) has been studied for the treatment of heavy metal contaminated water for the past 15 years. It has the ability to reduce and adsorb heavy metals, with different shapes and properties produced using various methods. Studies have shown potential industrial applications for the remediation of heavy metals and other pollutants.
Article
Environmental Sciences
Suzhen Huang, Zhikai Wang, Qixuan Song, Jun Hong, Tianyu Jin, Haiqing Huang, Zheng Zheng
Summary: This study investigates the effect of humic acid (HA) on submerged macrophytes and biofilms exposed to heavy metal stress. The results show that HA positively affects the plant growth and alleviates toxicity by complexing with metals. Exposure to HA and metals also promotes the abundance and alters the structure of microbial communities in biofilms. These findings demonstrate that HA has a protective effect against heavy metal stress in aquatic ecosystems through various mechanisms.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Applied
Longsheng Pei, Jianpo Su, Hanlun Yang, Yao Wu, Yan Du, Yongmei Zhu
Summary: In this study, a novel covalent-organic framework, COFMELE-BTDD, was synthesized and utilized for electrochemical sensing of heavy metal ions (HMIs) and Hg2+ adsorption. The COFMELE-BTDD demonstrated excellent sensitivity and stability towards Cd2+, Pb2+, Cu2+, and Hg2+. The results show that the COFMELE-BTDD has great potential in the adsorption and detection of HMIs.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Physical
Linrui Li, Baogang Yang, Guangwei Ji, Zhiren Zhao, Hongling Zhang, Fengyun Wang, Mingzhu Xia, Peisen Huang
Summary: Mg/Al layered double hydroxides (LDH) intercalated with Ethylenediamine-tetramethylene phosphonic acid (EDTMP) were synthesized for the removal of Pb2+ and Cd2+ from aqueous solutions. The intercalation of EDTMP increased the adsorption capacity of LDH for both heavy metal ions. The 20EDT-LDH composite achieved a high adsorption capacity of 249.82 mg/g for Pb2+ and 160.85 mg/g for Cd2+, with removal rates of 64.34% and 99.93% respectively.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Engineering, Environmental
Seyede Samira Hosseini, Ahmad Hamadi, Rauf Foroutan, Seyed Jamaleddin Peighambardoust, Bahman Ramavandi
Summary: In this study, a magnetic nanocomposite based on eggshell/starch/Fe3O4 nanoparticles was used as an effective adsorbent to remove heavy metal ions Cd2+ and Pb2+ from aqueous solution and industrial effluent. The adsorption process followed a pseudo-second-order and Langmuir models, with high adsorption capacities for Cd2+ and Pb2+. The adsorbent showed vital properties like being economical and practical for wastewater treatment.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Ahmad M. El-Wakil, Saadia M. Waly, Weam M. Abou El-Maaty, Mohamed M. Waly, Murat Yilmaz, Fathi S. Awad
Summary: A novel chelating adsorbent, MT-MAC, based on functionalized activated carbon, showed high adsorption capacity and selectivity for heavy metal ions removal from wastewater, while maintaining stability.
Article
Engineering, Environmental
Junqiang Yang, Keliang Shi, Fei Wu, Juan Tong, Yin Su, Tonghuan Liu, Jiangang He, Pavle Mocilac, Xiaolin Hou, Wangsuo Wu, Weiqun Shi
Summary: Technetium-99, a high-yield fission product, is a significant threat due to its radiotoxicity and high solubility in the environment. The study introduced a low-cost adsorbent, HDPy-bent, which showed excellent adsorption ability for ReO4, an analogue for TcO4, across a range of pH levels, demonstrating potential for efficient removal of 99Tc from contaminated water.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Shiya Wu, Renliang Lyu, Wei Xiong, Xiujing Xing, Hao Li
Summary: N-doped carbon nanocomposites modified with Fe2O3 nanoparticles were synthesized, showing improved conductivity and electrochemical performance, as well as enhanced adsorption capacity for heavy metal ions.
DALTON TRANSACTIONS
(2023)
Article
Agricultural Engineering
Yinping Xiang, Meiying Jia, Rui Xu, Jialu Xu, Lele He, Haihao Peng, Weimin Sun, Dongbo Wang, Weiping Xiong, Zhaohui Yang
Summary: This study investigated the impact of the non-antibiotic pharmaceutical carbamazepine on antibiotic resistance genes (ARGs) during anaerobic digestion. The results showed that carbamazepine induced the enrichment of ARGs and increased the abundance of bacteria carrying these genes. It also facilitated microbial aggregation and intercellular communication, leading to an increased frequency of ARGs transmission. Moreover, carbamazepine promoted the acquisition of ARGs by pathogens and elevated their overall abundance.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Weixin Zhao, Tianyi Hu, Hao Ma, Dan Li, Qingliang Zhao, Junqiu Jiang, Liangliang Wei
Summary: This review summarizes the effects and potential mechanisms of biochar on microbial behavior in AD systems. The addition of biochar has been found to promote microbial colonization, alleviate stress, provide nutrients, and enhance enzyme activity. Future research directions include targeted design of biochar, in-depth study of microbial mechanisms, and improved models.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Christina Karmann, Anna Magrova, Pavel Jenicek, Jan Bartacek, Vojtech Kouba
Summary: This review assesses nitrogen removal technologies in reject water treatment, highlighting the differences in environmental impacts and economic benefits. Partial nitritation-anammox shows potential for economic benefits and positive environmental outcomes when operated and controlled properly.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Wei-Hao Huang, Ying-Ju Chang, Duu-Jong Lee
Summary: This study modified pinecone biochar with layered double hydroxide (LDH) to enhance its adsorption capacity for heavy metal and phosphate ions. The LDH-biochar showed significantly improved adsorption capacities for Pb2+ and phosphate, and a slight increase for Cu2+ and Co2+. The LDH layer enhanced the adsorption through various mechanisms.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Chao Song, Fanfan Cai, Shuang Yang, Ligong Wang, Guangqing Liu, Chang Chen
Summary: This paper developed a machine learning model to predict the biochemical methane potential during anaerobic digestion. Model analysis identified lignin content, organic loading, and nitrogen content as key attributes for methane production prediction. For feedstocks with high cellulose content, early methane production is lower but can be improved by prolonging digestion time. Moreover, lignin content exceeding a certain value significantly inhibits methane production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sang Min Lee, Ju Young Lee, Ji-Sook Hahn, Seung-Ho Baek
Summary: This study successfully developed an efficient platform strain using Yarrowia lipolytica for the bioconversion of renewable resources into adipic acid, achieving a remarkable increase in production level.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sefkan Kendir, Matthias Franzreb
Summary: This study presents a novel approach using magnetic separation to efficiently harvest freshwater microalgae, Chlorella vulgaris. By combining pH-induced calcium phosphate precipitation with cheap natural magnetite microparticles, harvesting efficiencies up to 98% were achieved in the model medium.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Ishaq Kariim, Ji-Yeon Park, Wajahat Waheed Kazmi, Hulda Swai, In-Gu Lee, Thomas Kivevele
Summary: The impact of reaction temperature, residence time, and ethanol: acetone on the energy compositions and yield enhancement of biocrudes was investigated. The results showed that under appropriate conditions, biocrudes with high energy and low oxygen content can be obtained, indicating a high potential for utilization.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xiyue Zhang, Xiyao Li, Liang Zhang, Yongzhen Peng
Summary: Intermittent aeration is an innovative approach to enhance nitrogen removal in low carbon-to-nitrogen ratio municipal sewage, providing an efficient strategy for the continuous plug-flow AOA process.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xu Yang, Mahmoud Mazarji, Mengtong Li, Aohua Li, Ronghua Li, Zengqiang Zhang, Junting Pan
Summary: This study investigated the impact of magnetite on the nitrogen cycle of pig manure biostabilisation. The addition of magnetite increased N2O emissions and decreased NH3 emissions during composting. It also increased the total nitrogen content but should be considered for its significant increase in N2O emissions in engineering practice.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Ty Shitanaka, Haylee Fujioka, Muzammil Khan, Manpreet Kaur, Zhi-Yan Du, Samir Kumar Khanal
Summary: The market value of microalgae has exponentially increased in the past two decades, thanks to their applications in various industries. However, the supply of high-value microalgal bioproducts is limited due to several factors, and strategies are being explored to overcome these limitations and improve microalgae production, thus increasing the availability of algal-derived bioproducts in the market.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Martin Kerner, Thorsten Wolff, Torsten Brinkmann
Summary: The efficiency of using enriched CO2 from flue gas for large-scale production of green microalgae has been studied. The results show that the use of membrane devices and static mixers can effectively improve the CO2 recovery rate and maintain the suitable pH and temperature during cultivation, achieving a more economical and sustainable microalgae production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rui Ma, Ji Li, Rd Tyagi, Xiaolei Zhang
Summary: This review summarizes the microorganisms capable of using CO2 and CH4 to produce PHAs, illustrating the production process, factors influencing it, and discussing optimization techniques. It identifies the challenges and future prospects for developing economically viable PHAs production using GHGs as a carbon source.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Bing Wang, Peng Zhang, Xu Guo, Xu Bao, Junjie Tian, Guomin Li, Jian Zhang
Summary: The addition of zeolite in the co-composting of chicken manure and straw significantly reduced the emissions of ammonia and N2O, and increased the nitrate content. Zeolite also promoted the abundance of nitrification genes and inhibited the expression of denitrification genes.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rohit Dey, Franziska Ortiz Tena, Song Wang, Josef Martin Messmann, Christian Steinweg, Claudia Thomsen, Clemens Posten, Stefan Leu, Matthias S. Ullrich, Laurenz Thomsen
Summary: This study investigated the operation of a 1000L microalgae-based membrane photobioreactor system for continuous secondary wastewater treatment. The research focused on a green microalgae strain called Desmodesmus sp. The study aimed to understand key trends and optimization strategies by conducting experiments in both summer and winter seasons. The findings showed that maintaining low cell concentrations during periods of light inhibition was beneficial for nutrient uptake rates. Effective strategies for enhancing algae-based wastewater treatment included cell mass recycling and adjusting dilution rates based on light availability.
BIORESOURCE TECHNOLOGY
(2024)