Article
Environmental Sciences
Modhi O. Alotaibi, Adel M. Ghoneim, Mamdouh A. Eissa
Summary: Camelthorn plants have the ability to tolerate Cd toxicity and can be used for the phytoremediation of Cd-contaminated soils. They exhibit a potent antioxidant defense against Cd toxicity and have low root-shoot transfer, making them suitable for phytostabilization technology.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Modhi O. Alotaibi, Adel M. Ghoneim, Mamdouh A. Eissa
Summary: Camelthorn plants show high tolerance to Cd toxicity and have the potential to be used in phytoremediation of Cd-contaminated soils. They can tolerate Cd concentrations up to 200 mg/kg in soil and possess antioxidant defense mechanisms against Cd-induced oxidative stress. With low root-shoot transfer of Cd, Camelthorn plants are suitable for phytostabilization technology and have great potential for remediation of Cd-contaminated soil.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Paula Godinho Ribeiro, Osnar Obede da Silva Aragao, Gabriel Caixeta Martins, Marcos Rodrigues, Jean Michel Pereira Souza, Fatima Maria de Souza Moreira, Yuncong C. Li, Luiz Roberto Guimaraes Guilherme
Summary: Hydrothermally-altered feldspar (HYP) has been found to effectively immobilize heavy metals in soil and act as a source of nutrients for plants, making it a promising technology for revegetation of contaminated sites. In addition to promoting plant growth, HYP also reduces the absorption of heavy metals by plants, showing potential for use in phytostabilization programs.
Article
Plant Sciences
Sohyun Bae, Jae Woo Han, Quang Le Dang, Hun Kim, Gyung Ja Choi
Summary: Plants contain bioactive compounds that exhibit antimicrobial activity, with methanol extract of Platycladus orientalis showing potential as a crop protection agent. Eleven compounds were isolated and identified, with compounds 1, 2, and 9 effectively suppressing rice blast development by over 75%. Compound 5 & 6 mixture also exhibited moderate disease control efficacy.
Article
Environmental Sciences
Koji Kameyama, Teruhito Miyamoto, Yukiyoshi Iwata
Summary: The study found that PM-derived biochar significantly reduced plant Cd accumulation in Cd-contaminated soils, while also increasing soil pH and plant biomass.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Biodiversity Conservation
Bingchen Wu, Lijun Zhou, Shi Qi, Mengli Jin, Jun Hu, Jinsheng Lu
Summary: Habitat factors such as topography and soil nutrients affect understory plant diversity patterns on a small scale, with regions of medium altitude, gentle slope, and high organic matter content being more likely to have abundant diversity. Topographic factors have a dominant effect on diversity distribution, while soil nutrient factors also play a significant role. Promoting soil biochemical cycles can effectively increase understory plant diversity.
ECOLOGICAL INDICATORS
(2021)
Article
Environmental Sciences
Chun Ou, Wenhui Cheng, Zelu Wang, Xiamei Yao, Shengmei Yang
Summary: The accumulation of cadmium (Cd) in the soil, caused by the development of agriculture and industry, poses a serious threat to the health of animals and humans due to its high mobility in soil and subsequent deposition in plants. Melatonin (MT) has been recognized for its role in regulating plant growth and adaptation to environmental stress, but its mechanisms of action in Cd-stressed Platycladus orientalis seedlings are not well understood. This study investigated the mitigating effect of exogenous MT application on P. orientalis seedlings under Cd stress. The results revealed that exogenous MT application improved the growth parameters of P. orientalis seedlings, reduced Cd accumulation and transfer, enhanced the antioxidant system, and upregulated the expression of detoxifying genes, ultimately alleviating Cd-induced oxidative stress. The optimal concentration of MT was found to be 200 mu mol center dot L-1.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Biochemistry & Molecular Biology
Mahrous Awad, M. A. El-Desoky, A. Ghallab, Jan Kubes, S. E. Abdel-Mawly, Subhan Danish, Disna Ratnasekera, Mohammad Sohidul Islam, Milan Skalicky, Marian Brestic, Alaa Baazeem, Saqer S. Alotaibi, Talha Javed, Rubab Shabbir, Shah Fahad, Muhammad Habib ur Rahman, Ayman El Sabagh
Summary: The study showed that incorporating natural organic materials like PLE, VSC, and HA significantly increased the dry weight of the Amaranthus tricolor plant and led to a significant uptake of Pb and Zn. HA application resulted in over 5 times increase in Pb uptake in Helwan soil, while EDTA increased Pb uptake by 65% in El-Gabal El-Asfar soil, and VSC increased it by 110% in El-Madabeg soil. In all studied soils, the application of organic materials increased the remediation factor (RF) compared to the control.
Article
Biotechnology & Applied Microbiology
Natagarn Tongphanpharn, Chih-Huang Chou, Chung-Yu Guan, Chang-Ping Yu
Summary: Plant microbial fuel cells (PMFCs) using wetland plants such as cattail and wild rice showed promising results in Cd(II) remediation in contaminated soil. Both plants could accumulate Cd mainly in roots, with the presence of biochar further enhancing Cd removal in the soil. Additionally, PMFCs were effective in immobilizing Cd contamination and reducing bioavailability in soil, with dominant Proteobacteria genera observed in the microbial community analysis.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Environmental Sciences
Mariam K. Al-Lami, Dane Nguyen, Nadege Oustriere, Joel G. Burken
Summary: Historical hard-rock mine activities have left almost half a million mining-impacted sites across the US, with phytostabilization being a cost-effective method. Utilizing PlantCV technology in greenhouse studies can identify potential native species for restoration of mine-impacted sites.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Yonge Zhang, Bing Liu, Guodong Jia, Xinxiao Yu, Xiaoming Zhang, Xiaolin Yin, Yang Zhao, Zhaoyan Wang, Chen Cheng, Yousheng Wang, Yan Xin
Summary: This study scaled up an isotope model from leaf to whole-plant level to simulate the variation in WUEs,P in response to different CO2 concentrations and soil water content. The model taking into account the effect of soil water stress outperformed the model neglecting this effect in estimating g(sw). The established model effectively captured the response pattern of WUEs,P to different conditions by introducing two diffusion control functions.
Article
Environmental Sciences
Wenzhi Cui, Yingying Liu, Wenguang Li, Lei Pei, Shuang Xu, Yuhuan Sun, Jianbo Liu, Fayuan Wang
Summary: This study compared the effects of biochar and hydroxyapatite on soil bacterial communities in a slightly Cd-contaminated farmland grown with sweet sorghum of different planting densities. The results showed that both biochar and hydroxyapatite decreased the diversity and richness of soil bacteria, but they had different effects on bacterial community structure. These findings contribute to a better understanding of the ecological impacts of soil remediation agents.
Article
Environmental Sciences
Yale Wang, Yingming Xu, Xuefeng Liang, Yuebing Sun, Qingqing Huang, Xu Qin, Lijie Zhao
Summary: The study found that adding mercaptopalygorskite (MPAL) in alkaline soils significantly reduced Cd uptake by wheat roots and Cd concentration in wheat grains, helping to decrease Cd concentration in soil to meet national standards.
Article
Soil Science
Lin Wei, Shanshan Zhang, Jianbo Li, Cunyang Niu, Haoxuan Xu, Pengwei Yao, Wenkai Shou
Summary: Root litter inputs affect soil organic carbon stocks and turnover. This study found that absorptive roots make a greater contribution to soil carbon sequestration compared to transport roots, due to their slower decomposition rate. Input of absorptive root litter reduced total soil carbon loss and increased soil carbon sequestration.
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
Environmental Sciences
Peng Zeng, Zhaohui Guo, Xiyuan Xiao, Chi Peng, Bohan Liao, Hang Zhou, Jiaofeng Gu
Summary: This study investigated the potential of tree-herb intercropping for the ecological remediation of PTM-contaminated soil. The results showed that the intercropping system improved the growth of Morus alba L. and increased the uptake of PTMs. The intercropping also enhanced the biological quality of the contaminated soil and increased the relative abundance of microorganisms.
Article
Environmental Sciences
Wen-Tao Tan, Hang Zhou, Shang-Feng Tang, Peng Zeng, Jiao-Feng Gu, Bo-Han Liao
Summary: Metal oxide-modified biochar showed excellent adsorption performance in wastewater treatment. In this study, iron-manganese (Fe-Mn) oxide-modified biochar (BC-FM) was synthesized using rice straw biochar, and its adsorption process, removal effect, and mechanism of cadmium (Cd) adsorption in wastewater treatment were investigated. The results demonstrated that BC-FM had a significantly higher adsorption capacity for Cd compared to other modified biochars mentioned in the literature. The Cd adsorption by BC-FM followed a spontaneous chemical adsorption mechanism. Additionally, BC-FM exhibited good reusability and stability. Therefore, metal oxide-modified biochar can be an efficient adsorbent for treating Cd-contaminated wastewater.
ENVIRONMENTAL POLLUTION
(2022)
Review
Environmental Sciences
Langjun He, Rongkui Su, Yonghua Chen, Peng Zeng, Lu Du, Bin Cai, Aoshan Zhang, Honghong Zhu
Summary: The research found that Macleaya cordata has a high tolerance to low concentrations of manganese stress and manganese can promote the growth and metabolic activity of Macleaya cordata. However, high concentrations of manganese cause significant damage to the physiology and ultrastructure of Macleaya cordata. The leaves of Macleaya cordata have the highest absorption capacity for manganese, followed by roots and stems. These findings indicate the potential of Macleaya cordata in remediating manganese-contaminated soil.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Review
Environmental Sciences
Y. He, C. Peng, Y. Zhang, Z. Guo, X. Xiao, L. Kong
Summary: By collecting heavy metal data from soil and dust samples in 34 cities in China, this study found that the concentrations of Cd, Pb, Cu, and Zn in urban street dust were generally higher than those in urban soil. The main reasons for the high metal concentrations in some cities were the development of metal processing and smelting industries, manufacturing, and the relocation of heavily polluting enterprises. The heavy metal concentrations in urban soil were not correlated with those in urban dust, indicating different long-term and short-term sources of pollution. In most cities, the non-carcinogenic risk of heavy metals in urban soil and dust for children was at a safe level, with lead being the major contributor to total health risk.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Zhi Xu, Yulian Hu, Zhaohui Guo, Xiyuan Xiao, Chi Peng, Peng Zeng
Summary: This study investigated the pyrolysis of rice straw at different temperatures for producing biochar to treat heavy metal(loid)-contaminated RS. It was found that increasing temperature volatilized the heavy metal(loid)s, with Cd being the most volatile metal. Furthermore, biochars produced at higher temperatures showed higher Pb adsorption capacity and reduced vertical Pb migration.
JOURNAL OF SAUDI CHEMICAL SOCIETY
(2022)
Article
Environmental Sciences
Yi Jiang, Xuan-Tao Yi, Meng-Yu Liu, Bei-bei Liu, Hang Zhou, Peng Zeng, Bo-Han Liao, Jiao-Feng Gu
Summary: The application of a calcium and iron-based amendment in contaminated paddy soils led to increased soil enzyme activity, reduced levels of cadmium and arsenic, and improved soil fertility and health.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Shang-Feng Tang, Hang Zhou, Wen-Tao Tan, Jun-Guo Huang, Peng Zeng, Jiao-Feng Gu, Bo-Han Liao
Summary: This study investigated the adsorption of Pb(II) by iron-manganese oxide-modified biochar (FM-BC) and analyzed its adsorption mechanism. The results showed that FM-BC significantly enhanced the adsorption capacity and efficiency. Therefore, FM-BC is a promising adsorbent for Pb(II) removal from wastewater.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Environmental Sciences
Ziruo Zhou, Chi Peng, Xu Liu, Zhichao Jiang, Zhaohui Guo, Xiyuan Xiao
Summary: Pb-Zn smelting is a major source of heavy metal(loid) contamination in soils. The study found severe contamination of arsenic, cadmium, lead, and zinc within a 2 km distance to the smelteries, posing potential ecological and health risks.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Environmental Sciences
Gu Jiaofeng, Huo Yang, Zeng Peng, Liao Bohan, Zhou Hang
Summary: This study investigated the influence of phosphorus (P) on the formation of iron plaque on rice roots and its impact on cadmium (Cd) uptake. The results showed that while P supply enhanced the formation of iron plaque, it reduced the retention capability of Cd. Excessive P fertilizer application can lead to increased accumulation of Cd in rice plants.
Article
Environmental Sciences
Eric Tindanzor, Zhaohui Guo, Tianshuang Li, Rui Xu, Xiyuan Xiao, Chi Peng
Summary: This study compared the removal performance of oxalic acid, citric acid, and a copolymer of maleic and acrylic acid on heavy metals in polluted soil. The results showed that the sequential use of citric acid and oxalic acid was the best alternative to EDTA, with higher metal removal efficiency and successful support for crop germination.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Chi Peng, Yalei He, Kai Zhang, Yan Zhang, Xinxing Wan, Meie Wang, Weiping Chen
Summary: Predicting temporal changes in PAH concentrations in urban soils is crucial for managing health risks. This study found that PAH concentrations in residential areas of metropolitan cities increase with building age, indicating an increasing health risk over time.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Peng Zeng, Hang Zhou, Penghui Deng, Jiaofeng Gu, Bohan Liao
Summary: This study found that topdressing silicon fertilizer during the booting and filling stages of rice cultivation can increase rice yield, promote the formation of iron plaque, and reduce the inorganic arsenic content in brown rice.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Zhaohui Guo, Yunxia Zhang, Rui Xu, Huimin Xie, Xiyuan Xiao, Chi Peng
Summary: This study developed a machine learning model to investigate the vertical distribution and prediction of metal(loid)s in a typical abandoned Pb/Zn smelter site. The results demonstrated that the model was effective in identifying key factors influencing contamination distribution and predicting metal(loid)s contents in subsurface soil. Arsenic (As), cadmium (Cd), lead (Pb), and zinc (Zn) were found to be the primary pollutants with migration depths of 4-6 m.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Peng Zeng, Jiawei Liu, Hang Zhou, Binyun Wei, Jiaofeng Gu, Ye Liao, Bohan Liao, Xufeng Luo
Summary: Limestone and sepiolite combined amendment and silicon fertilizers are commonly used for the remediation of Cd-polluted paddy soil. The co-application of LS and Si fertilizer can decrease Cd accumulation in soil and rice grains, while increasing Si content in rice.
