Article
Environmental Sciences
Yuling Liu, Haiyan Luo, Boqing Tie, Danyang Li, Shoutao Liu, Ming Lei, Huihui Du
Summary: This study investigated the performance of Fe-Mn-modified biochar for long-term soil remediation and its impact on Cd accumulation in rice plants. The results showed that the biochar effectively decreased the exchangeable Cd fraction in soil and reduced Cd bioaccumulation in rice, especially in the grain, ensuring food safety. Ferromanganese modification and application of biochar can maintain soil redox status, increase root Fe plaques, and enhance the stability of biochar, contributing to its high remediation efficiency over time.
Article
Engineering, Environmental
Fengfeng Ma, Hao Zhao, Xudong Zheng, Baowei Zhao, Jingru Diao, Yufeng Jiang
Summary: In this study, amino groups were modified on the surface of corn stalks biochar (CSBC) to prepare a highly selective Cd(II) adsorbent (NH2-CSBC). The adsorption capacity of NH2-CSBC for Cd(II) was 4 times that of the original CSBC. The amino-modified biochar showed great potential in the treatment of heavy metal wastewater.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Jianjun Qin, Jing Wang, Jian Long, Jing Huang, Shengshuang Tang, Hongbo Hou, Peiqin Peng
Summary: This study investigates the extraction of biomass enriched with heavy metals using Napier grass biochar and the separation of heavy metals. The results show the feasibility of obtaining K-rich fertilizer with low risk of heavy metals and biochar with good application prospect.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Chemistry, Multidisciplinary
Jingbo Wang, Yaxin Kang, Huatai Duan, Yi Zhou, Hao Li, Shanguo Chen, Fenghua Tian, Lianqing Li, Marios Drosos, Changxun Dong, Stephen Joseph, Genxing Pan
Summary: Co-pyrolysis of straw and Ca(OH)(2) can effectively improve the adsorption capacity of biochar for Cd. The alkali-modified biochar showed higher adsorption capacities and faster adsorption kinetics compared to the original biochar. The main adsorption mechanisms of alkali-modified biochar were ion exchange and precipitation.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Environmental Sciences
Zhuowen Meng, Shuang Huang, Zhongbing Lin
Summary: By modifying rice straw biochar with KMnO4, its adsorption capacity was significantly improved, especially during co-aging with soil. Modified biochar always had higher adsorption capacity than unmodified biochar after aging processes, and its dominant adsorption mechanism was precipitation and adsorption with minerals.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Shiguo Gu, Wei Zhang, Fei Wang, Zhanhang Meng, Yu Cheng, Zexuan Geng, Fei Lian
Summary: The pyrolysis of biomass containing excessive heavy metals can result in heavy metal contaminated biochar (BC). In addition to higher charring temperature, particle size of BC also plays a critical role in the content of heavy metals and its ecotoxicity. Content and chemical forms of cadmium (Cd) in BC fractions as well as the related algal toxicity were examined. The results showed that particle size significantly modified the chemical forms and ecotoxicity of Cd in BC, which has important implications for understanding the behavior and potential risk of heavy metal contaminated BC in the environment.
ENVIRONMENTAL POLLUTION
(2023)
Review
Agricultural Engineering
Anil Kumar Patel, Ravi Katiyar, Chiu-Wen Chen, Reeta Rani Singhania, Mukesh Kumar Awasthi, Shashikant Bhatia, Thallada Bhaskar, Cheng-Di Dong
Summary: The evolving multidrug resistance in microbes due to increasing antibiotic pollution is a severe global crisis. Recent developments in antibiotic remediation using biochar show promising results. Biochar engineering advancements have improved the efficiency of biochar remediation by enhancing its interactions and bonding abilities with antibiotic pollutants. This review focuses on highlighting the effectiveness of biochar in reducing emerging antibiotic pollutants and discusses the relationship between feedstock, production conditions, engineering techniques, and biochar properties. The review also explores various modification strategies to improve biochar remediation potential and examines the interactions and properties of biochar and related composites, such as photocatalysis, adsorption, and oxidation processes. Additionally, future research directions and opportunities for biochar research are discussed.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Ying Zhou, Zhengkang Zou, Mengfei Wang, Yunqiang Wang, Junli Li, Lingzhi Qiu, Yuxuan Cheng, Zhaoyi Dai
Summary: Cadmium accumulation in edible plants can pose a risk to crop safety and human health. This study investigated the effects of nano-ferric oxide and biochar, alone or in combination, on muskmelon plants under cadmium stress. The composite treatment (biochar and nano-ferric oxide) significantly reduced malondialdehyde content by 59.12% and increased ascorbate peroxidase activity by 276.6%. Soil analysis and plant cadmium content determination showed that the composite treatment helped reduce cadmium levels in different parts of muskmelon, reducing the edible risk. Additionally, the composite treatment increased the content of beneficial components in muskmelon flesh, such as polyphenols, flavonoids, and saponins.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Jinyu Zhang, Zhongxin Tan, Qiaoyun Huang
Summary: The study found that the new biochar greatly improves the adsorption effect of cadmium in water, with a maximum adsorption capacity of 400 mg/g. The special structures in the biochar can react with cadmium to form stable complexes, providing more adsorption sites and strengthening the adsorption and passivation of cadmium in soil.
Article
Engineering, Environmental
Mingke Luo, Xia Jiang, Yongli Liu, Yaqing Liu, Hui Yu, Yuan Niu, Xiaofan Meng, Liang Wang, Yong Niu
Summary: This study comprehensively investigated the adsorption capacity and pollutant removal mechanisms of modified biochar. The experimental results showed that the adsorption capacity of biochar increased with the electron-withdrawing ability of the grafted functional groups. -NO2 group was successfully grafted onto cellulose, and the maximum adsorption capacity was found to be 158.73 mg/g. The study also demonstrated that the modified biochar exhibited good stability and regeneration properties in acidic, alkaline, and oxidizing environments.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Abhishek Kumar, Tanushree Bhattacharya, Wasim Akram Shaikh, Sukalyan Chakraborty, Dibyendu Sarkar, Jayanta Kumar Biswas
Summary: Biochar, a stable carbonaceous material derived from biomass pyrolysis, can be modified physically and chemically to enhance its sorption capacity for contaminant removal. This study reviews the application of modified biochar for eco-friendly contaminant removal and discusses the selection of biomass and modification methods, as well as the changes in physico-chemical properties. Mechanistic insights into the functional role of modified biochar in contaminant removal are provided, along with the discussion of the impact of aging on contaminant adsorption performance. Feasibility and limitations of different modification methods are presented, along with the identification of research gaps for future investigations.
CURRENT POLLUTION REPORTS
(2022)
Article
Agronomy
Jiarui Miao, Yalan Chen, Enyao Zhang, Yan Yang, Ke Sun, Bo Gao
Summary: In a greenhouse pot experiment, the application of fresh microplastics increased the availability of cadmium (Cd) in soil and its uptake by wheat plants, while aged microplastics only increased the available Cd in soil. Biochar increased both Cd availability and uptake by wheat plants. The coexistence of microplastics and biochar further increased Cd availability in soil compared to biochar alone.
GLOBAL CHANGE BIOLOGY BIOENERGY
(2023)
Article
Environmental Sciences
Jiayan Ma, Xing Ni, Qiying Huang, Dan Liu, Zhengqian Ye
Summary: The study demonstrated that bamboo biochar could effectively reduce the availability of cadmium in soil, leading to a decrease in cadmium accumulation in wheat grains. Applying bamboo biochar in low-cadmium accumulating wheat varieties significantly reduced the content of cadmium in roots, straw, and grains.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Ying Du, Yaling Feng, Yinlong Xiao
Summary: This study investigated the effects of interactions between biochar particles of varying sizes and common clay minerals on the surface properties of biochar and its capacity for Cd sorption. The results showed that the Cd sorption capacity of large biochar particles increased after interaction with clay minerals, while the Cd removal capacity of small biochar particles decreased. Analysis revealed that COO- groups on the initial biochar had the highest sensitivity for Cd adsorption.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Environmental
Anis Natasha Shafawi, Abdul Rahman Mohamed, Pooya Lahijani, Maedeh Mohammadi
Summary: This review article discusses recent studies on modifying engineered biochar to enhance CO2 adsorption performance, emphasizing the importance of adjusting physical, chemical, and physicochemical properties to improve CO2 capture capacity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)