Article
Environmental Sciences
Xiaotong Yun, Yan Ma, Hao Zheng, Yaru Zhang, Biying Cui, Baoshan Xing
Summary: This study investigated the potential of alkali-fused fly ash as a modifier for biochar and found that the modified biochar exhibited improved Pb(II) adsorption capacity. The modification process increased the specific surface area and introduced new bonding sites, leading to enhanced cation exchange and Pb(II) adsorption performance. The modified biochar also demonstrated good adsorption performance in high-concentration simulated wastewater. The Pb(II) adsorption mechanism was found to involve physical adsorption, precipitation, cation exchange, and complexation.
Article
Engineering, Environmental
Bo Cao, Jianhua Qu, Yihang Yuan, Weihang Zhang, Xuemei Miao, Xinru Zhang, Yuan Xu, Tianyi Han, Haijiao Song, Shouyi Ma, Xue Tian, Ying Zhang
Summary: Sulfide-iron decorated biochar (BC-Fe-S) was used for the removal of cadmium (Cd) and lead (Pb) from water. BC-Fe-S exhibited pH-dependent uptake capacities and conformed to pseudo-second-order and Langmuir models. Thermodynamic consequences showed that the contaminants uptake proceeded spontaneously. BC-Fe-S primarily bound Cd(II)/Pb(II) through chelation, ion exchange, co-precipitation, and electrostatic interaction.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Wei Xiang, Xueyang Zhang, Junpeng Luo, Ying Li, Tingting Guo, Bin Gao
Summary: Lignin impregnated biochar derived from corn stalk and wheat straw showed improved porous properties and exhibited excellent adsorption performance for tetracycline hydrochloride (TCH) in wastewater. The adsorption behavior of TCH on the biochar could be interpreted by a two-step process, involving pore filling, hydrogen bonding, pi-pi interaction, and electrostatic interactions. Cations such as Na+, K+, Mg2+, and Al3+ could compete with TCH for adsorption, while Ca2+ could enhance TCH adsorption through the formation of TCH-Ca2+ complexes. The best performing lignin impregnated biochar was WS-L, which illustrated the potential of lignin-modified biochar for antibiotics removal from aqueous solutions.
ENVIRONMENTAL RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Xuebo Hu, Ruigang Zhang, Bing Xia, Rongrong Ying, Zhewei Hu, Xu Tao, Hao Yu, Fabao Xiao, Qiaoying Chu, Hongfeng Chen, Jiazhong Qian
Summary: Pyrolysis temperature has a significant impact on the properties of biochar, which in turn affects the adsorption of heavy metal ions. Comparing biochars from the pyrolysis of maize straw and wheat straw, it was found that the biochar produced at 400 degrees C from maize straw showed the best physical and chemical properties, as well as a higher adsorption rate and capacity. The adsorption mechanisms involve surface precipitation of carbonates and phosphates, as well as complexation with oxygenated functional groups and delocalized pi electrons.
Article
Chemistry, Multidisciplinary
Chengguang Chen, Muqing Qiu
Summary: FeS@biochar was successfully prepared and demonstrated effective removal of Pb(II) ions from aqueous solutions, with a higher removal rate compared to other adsorbents. Kinetic and isotherm models showed good fit with experimental results, with the removal controlled by chemical reactions and monolayer adsorption on the surface. The mechanisms of Pb(II) removal included electrostatic attraction, hydrogen bonding, physical adsorption, ion exchange, and chemical precipitation, showcasing FeS@biochar's potential for environmentally friendly wastewater treatment.
Article
Environmental Sciences
Zijun Yang, Jun Hou, Jun Wu, Lingzhan Miao
Summary: This study investigated the adsorption mechanisms and properties of lead on biochar-derived microalgae residue produced at different pyrolytic temperatures. The results showed that precipitation with minerals and ion exchange were the main mechanisms for Pb adsorption, with the contribution of each mechanism depending on the pyrolytic temperature. Surface precipitation contributed to the maximum adsorption capacity for high-temperature CB and SB.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Environmental Sciences
Zhukela Lin, Yiwei Hu, Yijun Yuan, Baowei Hu, Binliang Wang
Summary: Microplastics have the potential to concentrate and transport heavy metals in the aquatic environment, with the sorption behavior of heavy metals onto them being pH and ionic strength dependent. Among the tested materials, polyvinylchloride PVC showed the highest maximum sorption capacity for lead (II) under the experimental conditions.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Environmental Sciences
Yining Ji, Na Zheng, Qirui An, Siyu Sun, Sujing Wang, Xiaoqian Li, Pengyang Li, Xiuyi Hua, Deming Dong, Chunmei Zhao, Zimeng Li, Wenhui Zhang
Summary: This study investigates the adsorption mechanism of pyrolytically modified wood ear mushroom sticks (WMBC) as a new bio-adsorbent for Cd2+ and Pb2+. The results show that the adsorption capacity increased with higher pyrolysis temperature and WMBC exhibited a stronger adsorption ability for Pb2+ than for Cd2+.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Environmental Sciences
Shaohua Li, Chi Luo, Fan Yan, Yue Yang, Bin Guo, Lu Wang, Shaoquan Xu, Feng Wu, Puhui Ji
Summary: This study investigated the adsorption performance of rice straw biochar modified with calcium thioglycolate for removing Pb(II) and Cd(II) from aqueous solutions. The results showed that the modified biochar had high adsorption capacity and exhibited higher selectivity for Pb(II) in binary systems. Additionally, the modified biochar demonstrated satisfactory recycling performance, indicating its potential as an inexpensive and efficient adsorbent for heavy-metal removal in polluted water.
ENVIRONMENTAL POLLUTION
(2023)
Article
Materials Science, Multidisciplinary
Xiaobang Hou, Yuwei Zang, Lianke Xie, Xinlu Liu, Xiaoqian Chen, Shuzhen Ni, Fengshan Zhang
Summary: This study demonstrates the preparation of lignin with abundant phenolic hydroxyls through formic acid fractionation and its application as an adsorbent for Pb(II). The resulting LMP had a mean size of 723.6 nm and exhibited a high adsorption capacity of 96.18 mg/g, surpassing other lignin-based adsorbents. It can be easily obtained from the black liquor of formic acid fractionation, indicating its potential for toxic metal ions adsorption.
Article
Chemistry, Applied
Dongdong Liu, Zhengkai Hao, Dengqian Chen, Lipeng Jiang, Tianqi Li, Yuan Luo, Cuiping Yan, Bing Tian, Boyin Jia, Guang Chen
Summary: In this study, biochar with micro-mesoporous structure was prepared using Aspergillus tubingensis pretreatment coupled with NaOH activation method, and the characteristics and mechanism of Pb(II) adsorption were explored. The results showed that the A. tubingensis pretreatment enhanced the activation effect, resulting in hierarchical pores and increased specific surface area of the biochar. The ACEA-14 sample prepared with 14 days of microbial pretreatment exhibited the highest specific surface area and prominent adsorption performance for Pb(II) under certain conditions. The adsorption mechanism of the ACEA-14 sample involved ion exchange, surface complexation, cation-pi bond interactions, and physical diffusion.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Biotechnology & Applied Microbiology
Jun Dong, Peikun Jiang, Hailong Wang, Ruohui Lu, Yinxiu Liu, Yin Li, Yaping Gan, Nanthi Bolan
Summary: This study investigated the adsorption capacity of different biomass feedstocks for Pb(II) and the effect of magnetic modification on the adsorption capacity. Results showed that rice straw biochar had the highest adsorption capacity due to its rich mineral content and oxygen-containing functional groups. Magnetic modification improved the adsorption capacity of biochar by changing its surface properties. The study suggests that biochar could be a feasible and effective strategy for removing Pb(II) from wastewater.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Energy & Fuels
Omer Kazak, Ali Tor
Summary: Cold oxygen plasma engineering was used to create vinasse based biochar with the largest surface area and primarily microporous structure, resulting in highly efficient adsorption of Pb(II). The best-fitting isotherm model was Langmuir isotherm, with a superior adsorption capacity compared to other biochar based Pb(II) adsorbents. The adsorption mechanisms included ion-exchange, precipitation, electrostatic attraction, cation-pi interaction, and complexation. The engineered vinasse biochar can be reused and applied to real water samples without matrix effects.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2022)
Article
Agricultural Engineering
Hehu Zhang, Sicong Tian, Ying Zhu, Weizheng Zhong, Rongbin Qiu, Lujia Han
Summary: The micro-CT technique was used to study the adsorption process of Pb (II) on pellet biochar. The 3D distribution of Pb (II) on the biochar was consistent with the results of adsorption experiments and simulation. It was found that the adsorption process exhibited different patterns at different initial concentrations.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Renrong Liu, Yaohong Zhang, Baowei Hu, Hai Wang
Summary: Novel biochars including nano iron sulfide@ walnut shell biochar (FeS@WNS), Starch-FeS@WNS, and Chitosan-FeS@WNS were successfully prepared and showed excellent adsorption capacity for lead ions removal, with good stability and reusability, making them promising materials for wastewater treatment.
Article
Biotechnology & Applied Microbiology
Fangfang Wu, Long Chen, Peng Hu, Xia Zhou, Huoqiang Zhou, Duanhua Wang, Xiangyang Lu, Baobin Mi
Summary: The application of biochar derived from various biomass to treat heavy metal pollution has attracted attention. In this study, lignin was carbonized at different temperatures to obtain biochars. The biochars showed improved adsorption capacity for Cd(II) after carbonization, and the adsorption behavior and mechanisms were comprehensively investigated. The results indicated that the adsorption mechanisms involved the interaction with dissolved fractions and bulk biochar, with the former contributing more at lower temperatures. The study highlights lignin as a promising feedstock for preparing biochar for Cd(II) removal.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Energy & Fuels
Long Chen, Jian Hu, Qian Han, Anqi Xie, Zhi Zhou, Jiankui Yang, Qiyuan Tang, Baobin Mi, Fangfang Wu
Summary: This study investigated the kinetics characteristics and pyrolysis behavior of waste industrial lignin using a thermogravimetric analyzer. The DAEM and Coats-Redfern integration methods were used to evaluate the kinetic parameters under different heating rates. The results demonstrated the potential of industrial lignin to produce high-quality chemicals and revealed that the pyrolysis process can be divided into three stages.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Chemistry, Multidisciplinary
Long Chen, Yanying He, Jian Hu, Qian Han, Shixi Gu, Pengzhang Chen, Xiayan Fang, Fangfang Wu
Summary: This paper proposes an improved method for the recovery of iron from refractory fine-grained iron ores and validates its feasibility and effectiveness. Through steps such as microwave-assisted reduction roasting, acid leaching, and magnetic separation, iron can be stepwise recovered, and an iron concentrate that meets the requirements of the steel and iron industry can be obtained.
Article
Chemistry, Analytical
Long Chen, Jian Hu, Qian Han, Jing Zhang, Zhi Zhou, Nan Zhou, Huoqiang Zhou, Xiangyang Lu, Baobin Mi, Fangfang Wu
Summary: Microwave-assisted pyrolysis (MWP) was found to significantly enhance the electron accepting capacity (EAC) and electron exchange capacity (EEC) of biochar by improving the specific surface area (SSA) and promoting the formation of quinone and graphite-like structures. Detailed suggestions for regulating the redox properties of biochars were also provided based on the structure-activity relationship.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Agricultural Engineering
Long Chen, Baobin Mi, Jiangnan He, Yuchen Li, Zhi Zhou, Fangfang Wu
Summary: In this study, functionalized banana peel biochar (BPB) was prepared by microwave-assisted pyrolysis for the first time to investigate its adsorption to malachite green (MG) dye. The maximum adsorption capacity of BPB500 and BPB900 to malachite green reached 1790.30 and 2297.83 mg.g(-1) within 120 min. The adsorption mechanism of MG dye on BPB included hydrophobic interaction, hydrogen bonding, pi-pi interaction, n-pi interaction, and ion exchange. Furthermore, BPB showed great potential for practical applications in simulated wastewater treatment experiments and cost calculations.
BIORESOURCE TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Jian Hu, Yanying He, Jilong Zhang, Long Chen, Yu Zhou, Jing Zhang, Honglin Tao, Nan Zhou, Baobin Mi, Fangfang Wu
Summary: In this study, the role of anions in biomass pyrolysis catalyzed by nickel salts was investigated by impregnating four types of nickel salts (Ni(NO3)2, NiSO4, (CH3COO)2Ni, NiCl2) on reed. The results showed that nickel salts inhibited the release of volatiles from biomass and increased the yield of bio-char, with NiCl2 being the most effective. NiSO4 significantly increased the specific surface area and graphitization of bio-char, and improved the selectivity of phenolic compounds in bio-oil (62.27%) and the concentration of CO in pyrolysis gas (37.78%). The addition of NiCl2 enhanced the selectivity of ketone-rich oil (26.95%) and hydrogen-rich gas (56.39%). Ni(NO3)2 was weaker than other nickel salts in catalyzing the cleavage of macromolecular compounds. This research offers a prospective approach to control the distribution and quality of pyrolysis products by using suitable catalyst precursors.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Engineering, Environmental
Hong Wang, Yu Hua, Huiping Li, Long Chen, Xiaohu Dai
Summary: This study investigated the application of hydrothermal pretreatment in the anaerobic degradation of rice straw, finding that alkaline-thermal pretreatment can damage the straw surface and facilitate the dissolution of cellulose and hemicellulose, resulting in higher sugar concentration. The study also discovered that the hydrolysates contain various potentially reusable substances. These findings provide important new insights and technical support for the high-value utilization of rice straw.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Jian Hu, Long Chen, Pengzhang Chen, Shixi Gu, Yu Zhou, Jilong Zhang, Wenjie Zhao, Honglin Tao, Nan Zhou, Baobin Mi, Fangfang Wu
Summary: A new two-step catalytic pyrolysis process (TSCP) based on poly-generation technology was proposed to convert reed straw (RS) into phenol-rich bio-oil, hydrogen-rich gas, and solid carbon degradation material. The effects of the first step pyrolysis temperature (T1) and catalyst composition on product distribution and target product selectivity were investigated. Iron-loaded activated carbon catalysts promoted the selective production of phenolic compounds and hydrogen gas through various reactions. This study contributes to the comprehensive utilization of reed and provides a reference for the utilization of other agricultural and forestry wastes.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Environmental Sciences
Hong Wang, Hong Chen, Yongdong Chen, Enzhe Yang, Long Chen, Qiuhong Chen, Donghai Yang, Xiaohu Dai
Summary: In this study, a novel dissolved oxygen-differentiated airlift internal circulation PNA (PNA-DOAIC) system was designed and operated to investigate the effects of organic matter on the PNA process. The results showed that an influent C/N ratio of 2.0 was optimal for efficient and stable operation. The PNA coupled with denitrification achieved high nitrogen removal efficiency, but as the influent C/N ratio increased, the activity and abundance of anammox bacteria declined, and heterotrophic bacteria became dominant. The nitrogen removal pathways shifted from PNA to the nitrification-denitrification process. This study provides important insights into the effects of organic matter on the PNA process and expands the application scope of PNA-DOAIC bioreactors.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Hong Wang, Hong Chen, Long Chen, Yongdong Chen, Zixuan Liang, Enzhe Yang, Donghai Yang, Xiaohu Dai
Summary: This study investigated the effect of temperature reduction on the partial nitritation-anammox (PN/A) process. The results showed that temperature reduction influenced the expression of functional genes for anammox reaction and enhanced the biofilm formation and diversity of nitrogen removal pathways.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Metallurgy & Metallurgical Engineering
Fangfang Wu, Zhu Xiao, Bin Zeng, Long Chen, Hui Liu, Min Liang, Peng Yu, Baobin Mi
METALLURGICAL RESEARCH & TECHNOLOGY
(2019)
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)
