Article
Engineering, Environmental
Juan Liu, Shixing Ren, Jielong Cao, Daniel C. W. Tsang, Jingzi Beiyuan, Yutao Peng, Fa Fang, Jingye She, Meiling Yin, Nengping Shen, Jin Wang
Summary: Thallium (Tl) is a highly toxic trace metal, and the emerging pollution of Tl in waters has become a global concern. The MnFe2O4-biochar composite (MFBC) is a promising and cost-effective adsorbent with high efficiency in removing Tl from wastewater, showing potential for practical application.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Analytical
Yaoning Chen, Fangting Xu, Hui Li, Yuanping Li, Yihuan Liu, Yanrong Chen, Meiling Li, Linshenzhang Li, Hongjuan Jiang, Li Chen
Summary: The magnetic MnFe2O4-sludge biochar composites synthesized via a one-step hydrothermal approach exhibit high adsorption efficiency for removing Pb2+ from water bodies, showing great potential for practical applications.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Environmental Sciences
Xiaoping Liao, Jinru Cao, Meng Lei, Caixiang Zhang, Lisong Hu
Summary: The oxidation of manganese sulfide (MnS) has a significant impact on organic contaminants in the natural environment and engineered systems, with hydroxyl radical being the dominant oxidant. Sulfide and its oxidation products play a crucial role in scavenging hydroxyl radicals.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Zulqarnain Haider Khan, Zhongyang Li, Minling Gao, Md. Shafiqul Islam, Ling Xiao, Weiwen Qiu, Zhengguo Song
Summary: A novel magnesium-manganese modified biochar composite (Mg/Mn@BC) was prepared for simultaneous elimination of Cd(II) and As(III) from water. The Langmuir sorption capacity of Mg/Mn@BC for As(III) and Cd(II) in the mixed sorption system was 164 and 316 mg g-1, respectively, higher than that in the single adsorption system (75 and 295 mg g-1). The results suggest that Mg/Mn@BC composite has the potential to be used in wastewater treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Jie Qu, Naiju Che, Guoliang Niu, Longfei Liu, Chengliang Li, Yanli Liu
Summary: Biochars prepared from cotton straw, corn straw, and rice husk were modified with ball-milling and iron/manganese oxides to prepare Fe/Mn binary metal oxide-ball milled biochar (Fe/Mn-BMBCs). Fe/Mn-BMBCs had a rough surface with deposits of Fe/Mn oxide nanoparticles, larger specific surface areas, and more oxygen-containing functional groups compared to pristine biochars. The adsorption capacities of Cd2+ on Fe/Mn-BMBCs were 4.8-6.1 times higher than those of pristine biochars. The main mechanisms of Cd2+ adsorption on Fe/Mn-BMBCs were complexation with oxygen-bearing functional groups, ion exchange, Cd2+-pi interaction, and chemical precipitation.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Biotechnology & Applied Microbiology
Peng Fu, Xin Wang, Jing Shi, Lixiang Zhou, Qingjie Hou, Weiqian Wang, Yu Tian, Junmei Qin, Wenlong Bi, Fenwu Liu
Summary: In this study, a composite Schwertmannite@Biochar (Sch@BC) was synthesized and modified by alkali for the removal of As(III) and Cd(II) from wastewater. The alkali-modified Schwertmannite@Biochar (AM-Sch@BC) showed significantly improved adsorption capacity. Under certain conditions, the removal efficiency of As(III) and Cd(II) increased by 1.1 and 7.5 times, respectively, compared with Sch@BC. AM-Sch@BC could effectively remove As(III) and Cd(II) at pH 6.00-8.00, with a 100% removal efficiency for As(III) within 1 hour and a 70% removal efficiency for Cd(II) after 12 hours. The increased -OH content and specific surface area (SSA) in the adsorbent after alkali modification may contribute to its efficient removal of As(III) and Cd(II).
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Chemistry, Physical
Honggang Wang, Changyang Lei, Wentao Shi, Yanyan Liu, Xinyu Zhou, Jianhua Qu, Xin Zheng, Qi Hu
Summary: In this study, a heterogeneous catalyst was prepared by combining immobilized iron trinitrophthalocyanine with oxidic biochar derived from Flueggea suffruticosa residue, and it was used for the removal of tetracycline. The distribution of iron trinitrophthalocyanine on the surface of oxidic biochar increased the catalytic activity of hydrogen peroxide, resulting in a 51.6% removal of tetracycline after 60 minutes. The catalytic process involved the oxidation of tetracycline into small molecule compounds through demethylation, ring opening, hydrogenation, and other steps.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Environmental Sciences
Zulqarnain Haider Khan, Minling Gao, Weiwen Qiu, Zhengguo Song
Summary: The study developed MoS2-impregnated biochar for adsorption of Cd from an aqueous solution, showing excellent adsorption capacity and identifying Cd sorption mechanisms involving Cd-O bonds and Cd-S complexation on MoS2@BC.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Chuanbin Wang, Xiangping Li, Wenzhu Wu, Guanyi Chen, Junyu Tao
Summary: This study successfully addressed cadmium pollution by producing biochar from Enteromorpha prolifera, with KOH activated biochar at a ratio of 1:2 showing optimal removal efficiency. The biochar demonstrated promising potential as a cadmium adsorbent with multiple environmental benefits.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Environmental Sciences
Kai Zhang, Yang Chen, Zhanqiang Fang
Summary: In this paper, sulfur-modified biochar (SBC) derived from bagasse was prepared and its efficiency in removing cadmium from water was studied. The results showed that SBC could remove more than 90% of cadmium within 10 minutes and had a maximum adsorption capacity 22.35 times higher than unmodified biochar. ICP, SEM-EDS, BET, XRD, FT-IR, and XPS analyses revealed the mechanisms of cadmium removal by SBC.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Engineering, Environmental
Ma Bai, Youzheng Chai, Anwei Chen, Jiayi Yuan, Cui Shang, Liang Peng, Cheng Peng
Summary: Water pollution caused by heavy metals is a serious threat to the environment and human health. This study developed a novel MnFe2O4 loaded biochar, which was prepared and modified from agricultural waste straw using the sol-gel method, to efficiently remove cadmium (Cd) from water. The results showed that the as-prepared composites had a significantly higher Cd adsorption capacity compared to the original biochar. The spinel loaded biochar exhibited a strong anti-interference ability in binary and quaternary systems, and its magnetic properties facilitated easy separation and recovery from aquatic solutions, with little decrease in adsorption capacity after multiple cycles.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Zibo Xu, Zhonghao Wan, Yuqing Sun, Xinde Cao, Deyi Hou, Daniel S. Alessi, Yong Sik Ok, Daniel C. W. Tsang
Summary: Customizing iron speciation in Fe-biochar is crucial for effective arsenic immobilization. Different iron speciations play distinct roles in As removal, with labile/amorphous-C inducing more reductive-Fe(0) formation leading to efficient As immobilization, while stable/graphitic-C generates more amorphous-Fe resulting in high As removal despite limited Fe(0) content. This study provides insights for the design of multifunctional Fe-biochar for environmental remediation.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
Honghui Jiang, Zhenxin Hu, Yuanhao Ouyang, Xiaodong Ji, Xi Hu, Tingting Li, Ke Ouyang, Ping Wang, Hui Wang, Xinjiang Hu
Summary: This study investigated the use of multi-phase cadmium sulfide loaded on biochar as a catalyst to activate peroxymonosulfate for the removal of thiamethoxam. The results showed that the catalyst exhibited excellent photocatalytic performance and stability. The mechanism of free radical formation during the activation process was characterized using theoretical calculations and experimental characterization.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Environmental Sciences
Yong Liu, Long Wang, Chang Liu, Jie Ma, Xiaoxue Ouyang, Liping Weng, Yali Chen, Yongtao Li
Summary: The combination of biochar and iron minerals improves pollutant adsorption capacity. The study explored the mechanism of cadmium adsorption by biochar-iron oxide composites. The synergistic effect significantly improved the adsorption capacity of the composites. Stability between iron minerals and biochar was maintained through different interactions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Chemical
Fa Fang, Siyu Liu, Wenhuan Yuan, Xinni Xiong, Jin Wang, Jianying Qi, Yiwen Shi, Weiqing Xu, Juan Liu, Tangfu Xiao
Summary: Potassium-rich biochars synthesized from waste banana peels were used as green adsorbents for efficient removal of Tl(I) from aqueous solution. Two distinct manganese oxide biochars, H-Mn3O4@BC and S-MnxOy@BC, were fabricated using co-precipitation and solid surface deposition methods, respectively. These biochars exhibited high adsorption capacity and resistance to interference from co-existing cations and organics, providing a promising alternative for the treatment of Tl(I)-containing wastewater.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Lars odegaard Bentsen, Narada Dilp Warakagoda, Roy Stenbro, Paal Engelstad
Summary: This study investigates uncertainty modeling in wind power forecasting using different parametric and non-parametric methods. Johnson's SU distribution is found to outperform Gaussian distributions in predicting wind power. This research contributes to the literature by introducing Johnson's SU distribution as a candidate for probabilistic wind forecasting.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Xing Liu, Qiuchen Wang, Yunhao Wen, Long Li, Xinfang Zhang, Yi Wang
Summary: This study analyzes the characteristics of process parameters in three lean gas ethane recovery processes and establishes a prediction and multiobjective optimization model for ethane recovery and system energy consumption. A new method for comparing ethane recovery processes for lean gas is proposed, and the addition of extra coolers improves the ethane recovery. The support vector regression model based on grey wolf optimization demonstrates the highest prediction accuracy, and the multiobjective multiverse optimization algorithm shows the best optimization performance and diversity in the solutions.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Cairong Song, Haidong Yang, Xian-Bing Meng, Pan Yang, Jianyang Cai, Hao Bao, Kangkang Xu
Summary: The paper proposes a novel deep learning-based prediction framework, aTCN-LSTM, for accurate cooling load predictions. The framework utilizes a gate-controlled multi-head temporal convolutional network and a sparse probabilistic self-attention mechanism with a bidirectional long short-term memory network to capture both temporal and long-term dependencies in the cooling load sequences. Experimental results demonstrate the effectiveness and superiority of the proposed method, which can serve as an effective guide for HVAC chiller scheduling and demand management initiatives.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Zhe Chen, Xiaojing Li, Xianli Xia, Jizhou Zhang
Summary: This study uses survey data from the Loess Plateau in China to evaluate the impact of social interaction on the adoption of soil and water conservation (SWC) technology by farmers. The study finds that social interaction increases the likelihood of farmers adopting SWC, and internet use moderates this effect. The positive impact of social interaction on SWC adoption is more pronounced for farmers in larger villages and those who join cooperative societies.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Chenghua Zhang, Yunfei Yan, Kaiming Shen, Zongguo Xue, Jingxiang You, Yonghong Wu, Ziqiang He
Summary: This paper reports a novel method that significantly improves combustion performance, including heat transfer enhancement under steady-state conditions and adaptive stable flame regulation under velocity sudden increase.
JOURNAL OF CLEANER PRODUCTION
(2024)