Article
Plant Sciences
Jari S. Algethami, Muhammad Kashif Irshad, Wasim Javed, Mohsen A. M. Alhamami, Muhammad Ibrahim
Summary: This study investigates the use of iron-modified biochar (Fe-BC) for the remediation of lead (Pb) and cadmium (Cd) contaminated agricultural soils. The results show that 2% Fe-BC treatment significantly improves the growth of wheat plants and enhances soil nutrient availability, while reducing the toxicity of Pb and Cd. Therefore, Fe-BC is a promising solution for remediating contaminated soils and improving soil fertility.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Environmental Sciences
Soheil Valizadeh, Sang Soo Lee, Yong Jun Choi, Kitae Baek, Byong-Hun Jeon, Kun-Yi Andrew Lin, Young-Kwon Park
Summary: This study evaluates the potential of biochar for immobilizing polycyclic aromatic hydrocarbons (PAHs) in soil. The bonding mechanisms and strength of bonds between biochar and PAHs are described, along with various factors that influence the extent and rate of PAHs immobilization. The study also discusses the interaction between biochar, microbes, and plants in soil, and the potential of combining biochar with biological tools for further remediation of PAHs. The recent technologies and challenges related to the application of biochar in soil remediation are explained.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Bo Tang, Haopu Xu, Fengmin Song, Hongguang Ge, Li Chen, Siyu Yue, Wushan Yang
Summary: Field experiments showed that both ordinary biochar and PEI modified biochar could effectively remediate Cd-contaminated soil, improve soil quality, and passivate Cd in soil. Compared to ordinary biochar, PEI modified biochar demonstrated a more significant passivation effect on Cd in soil.
ENVIRONMENTAL RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Humera Aziz, Xiukang Wang, Ghulam Murtaza, Ambreen Ashar, Sarfraz Hussain, Muhammad Abid, Behzad Murtaza, Muhammad Hamzah Saleem, Sajid Fiaz, Shafaqat Ali
Summary: The study evaluated the degradation behavior of chlorpyrifos (CP) in different soil treatments, showing that compost application accelerates CP degradation while biochar application suppresses it. The use of compost also helps in restoring soil enzyme activities affected by CP contamination. Overall, organic amendments, especially compost, are important for remediating CP contaminated soil.
Article
Plant Sciences
Yuxuan Cheng, Lingzhi Qiu, Pingkai Shen, Yunqiang Wang, Junli Li, Zhaoyi Dai, Meifang Qi, Ying Zhou, Zhengkang Zou
Summary: Through experiments, we found that three concentrations of biochar have a mitigative effect on muskmelon cadmium stress, with 5% biochar having the best effect and 3% biochar having the worst effect. Biochar alleviates cadmium stress in muskmelon primarily by inhibiting cadmium transfer, while muskmelon's resistance to cadmium stress is achieved through activating the phenylpropanoid pathway and overexpressing stress-related genes. The study provides a reference for the research of cadmium stress resistance in crops and the application of biochar in cadmium pollution in agricultural soil.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Article
Environmental Sciences
Liqun Zhang, Jie Hu, Chang Li, Yeyu Chen, Liugen Zheng, Dan Ding, Shifeng Shan
Summary: This study prepared bamboo-derived biochar loaded with different ratios of iron and manganese and evaluated its remediation performance in arsenic-contaminated soil. The study proposed the optimal ratio and mechanism of iron-manganese removal of arsenic, and explained the relationship between enzyme activity and soil environmental factors.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Matheus Sampaio Carneiro Barreto, Frederico Prestes Gomes, Hudson Wallace Pereira de Carvalho, Luis Reynaldo Ferracciu Alleoni
Summary: This study evaluated the effectiveness of adding phosphate, lime, biochar, and biosolids to contaminated forest soil near an abandoned mine site in Brazil for immobilizing potential toxic elements (PTE). The results showed that phosphate decreased Pb desorption but increased Zn desorption; biochar and biosolids immobilized high amounts of Zn and Pb, but a high dose of biosolids increased Pb desorption. Field trials are needed to confirm the long-term immobilization efficiency of lime and other amendments.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Biotechnology & Applied Microbiology
Sifang Kong, Jun Tang, Fan Ouyang, Mengou Chen
Summary: Biochar is a material used for remediating soil contaminated by heavy metals, and urban soils are those affected by human activities in cities and their suburbs. Studying the remediation effect and mechanism of biochar on heavy metals is significant for environmental restoration.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Environmental Sciences
Zirun Zhao, Lin Liu, Ying Sun, Liling Xie, Shuo Liu, Mingchun Li, Qilin Yu
Summary: In this study, fungus-derived biochar was used to enhance the microbe-plant remediation of cadmium-contaminated saline-alkali soil. The biochar significantly altered the rhizosphere microbiome and increased the colonization of salt-tolerant bacteria on plant roots. The combination of biochar and bacteria also improved the activity of rhizosphere enzymes, protected plants, and promoted cadmium transport. This suggests that fungus-derived biochar can effectively remove cadmium in saline-alkali soil.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Guoliang Chen, Yongqing Ma, Wenting Xu, Zhang Chen, Zhixian Li, Jianlin Zhou, Weijian Yu
Summary: In this study, a new heavy metal passivator, micro-nano nitrogen-doped biochar (Nm-NBC), was prepared and used for the remediation of cadmium-contaminated soil. The results showed that the addition of Nm-NBC significantly increased the biomass of soybean, pH, organic matter, and total nitrogen content, and reduced the available cadmium in soil. The mechanisms of Nm-NBC's remediation effect were also analyzed.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Dexun Zou, Jingjing Tong, Chenyu Feng, Yang Wang, Xinxin Li, Xusheng Zheng, Xuebo Wang, Yanping Liu
Summary: In this study, a biochar loaded with iron oxide and Shewanella loihica complex was used for microbial-chemical remediation of chromium-contaminated soil. Optimal parameters were identified through design optimization, resulting in a significant reduction of Cr(VI) contamination within a short timeframe. Characterization analysis confirmed the potential of the complex for soil remediation.
Article
Ecology
Guifen Lv, Tao Yang, Yuanhua Chen, Hongqian Hou, Xiumei Liu, Jianguo Li, Lingen Wei, Jin-Heng Li
Summary: The use of biochar-based fertilizer significantly reduces cadmium content in rice and soil in cadmium-polluted paddy fields. Improvements in soil properties can lead to better growth indexes for rice. Most bioavailable cadmium is immobilized in plant roots, with only a small portion transferring to rice.
ECOLOGICAL ENGINEERING
(2021)
Article
Environmental Sciences
Meili Xu, Weijie Dai, Zilin Zhao, Jiatong Zheng, Fei Huang, Chuang Mei, Shuting Huang, Chufan Liu, Peng Wang, Rongbo Xiao
Summary: This study found that rice straw biochar has different immobilization mechanisms for cadmium (Cd) in soils with different levels of contamination. Biochar can reduce the soluble fraction of Cd in soils and affect Cd availability by modifying soil properties and microbial community diversity.
Review
Agronomy
Hafeez Ur Rahim, Waqas Ali Akbar, Juha M. Alatalo
Summary: Cadmium pollution in soils is a significant problem for the environment and agriculture, affecting crop production, environmental quality, food safety, and human health. Biochar-based materials have emerged as potential solutions due to their multifunctional surface properties. The mechanisms involved in immobilizing cadmium include surface complexation, chemical reduction, precipitation, ion exchange, pi-pi interactions, hydrogen bonding, and adsorption. Factors such as biochar surface pore size, oxygen-containing functional groups, pyrolysis temperature, biochar feedstock, and soil characteristics influence these mechanisms.
Article
Environmental Sciences
Mingxuan Liu, Renjie Hou, Qiang Fu, Tianxiao Li, Shoujie Zhang, Anshuang Su
Summary: The problem of potentially toxic elements (PTEs) in farmland is a key issue in global pollution prevention and control, and has significant impacts on environmental safety, human health, and sustainable agricultural development. This study simulated freeze-thaw cycles to investigate the morphological changes of cadmium (Cd) and lead (Pb) in soil and their relationship with soil physicochemical properties. The results indicate that biochar can reduce the migration of Cd and Pb in soil, while increasing soil moisture content reduces the availability of Cd and Pb. Overall, biochar application has the potential to optimize soil properties for agricultural soil remediation and pollution control.
ENVIRONMENTAL POLLUTION
(2022)