Article
Environmental Sciences
Shiwei Yan, Jianhao Yang, Youbin Si, Xianjin Tang, Youhua Ma, Wenling Ye
Summary: The supply of sulfate has been found to reduce the bioavailability of arsenic (As) and cadmium (Cd) in paddy soil contaminated with both metals. The effect of sulfate addition, however, varies depending on the soil environment, potentially due to differences in sulfate background levels. Additionally, the addition of sulfate stimulates the activity of sulfate-reducing bacteria, which can positively affect rice growth and physiological characteristics.
Article
Engineering, Environmental
Xiong Yang, Dongming Wang, Ye Tao, Min Shen, Wei Wei, Chuang Cai, Changfeng Ding, Jiuyu Li, Lian Song, Bin Yin, Chunwu Zhu
Summary: This study investigates the effects and mechanisms of elevated CO2 concentration on cadmium (Cd) uptake by rice in a 3-year experiment. The results show that increased CO2 concentration leads to higher levels of dissolved Fe2+ in soil, resulting in more low-crystalline Fe oxides being deposited on the root surface. This inhibits the uptake of Cd by rice.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Ru Wang, Yinglin Guo, Yang Song, Yuting Guo, Xiaomeng Wang, Quan Yuan, Zengping Ning, Chengshuai Liu, Lixiang Zhou, Guanyu Zheng
Summary: Planting rice in As-contaminated paddy soils can lead to As accumulation in rice grains, which can be aggravated by P fertilizers. However, remediation using Fe(III) oxides/hydroxides cannot effectively reduce grain As and maintain P fertilizer utilization simultaneously. In this study, schwertmannite was proposed as a remedy for flooding As-contaminated paddy soil due to its strong sorption capacity for As and its positive effect on P fertilizer utilization. The results showed that the application of schwertmannite along with P fertilization effectively reduced As mobility in the contaminated soil and increased soil P availability. Moreover, it reduced P content in Fe plaque on rice roots, benefiting P fertilizer utilization. The amendment of schwertmannite and P fertilizer together significantly reduced As content in rice grains and increased rice shoot biomass, achieving the dual goals of reducing grain As and maintaining P fertilizer utilization efficiency.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Jianqiang Zhang, Qi Zou, Menqiang Sun, Hang Wei, Ling Huang, Tiantian Ye, Zhiliang Chen
Summary: This study investigates the effect of persulfate (PS) amendment on the accumulation of arsenic (As) in rice plants grown in contaminated paddy soil. The results show that PS application increases the biomass of rice plants and inhibits the formation of iron plaque on the root surface. Moreover, PS amendment significantly reduces the accumulation of inorganic arsenic (iAs) and dimethylarsenic (DMA) in brown rice.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Zhao-Feng Yuan, Williamson Gustave, John Boyle, Raju Sekar, Jonathan Bridge, Yuxiang Ren, Xianjin Tang, Bin Guo, Zheng Chen
Summary: The sharp redox gradient at soil-water interfaces is crucial in controlling the translocation and transformation of arsenic in paddy soils. This study found a strong positive linear relationship between dissolved Fe, Mn, As, and P in most paddy soils, indicating their general coupling, although decoupling was observed in one soil. The study provides direct evidence of multi-elements' interaction along redox gradient of SWI in paddy soils.
Article
Engineering, Environmental
Lin Liu, Rui-Lin Shen, Zhong-Qiu Zhao, Long-Jun Ding, Hui-Ling Cui, Gang Li, Yu-Ping Yang, Gui-Lan Duan, Yong-Guan Zhu
Summary: In this study, the specific effects of different nitrogen fertilizers on arsenic (As) mobility after straw incorporation and the interactions among iron (Fe), carbon (C), nitrogen (N), and As were investigated. The results showed that both KNO3 and NH4Cl addition can inhibit the As mobilization induced by straw incorporation, but through different mechanisms. The addition of KNO3 reduced As concentration in porewater by restraining Fe reduction and enhancing Fe oxidation, while high-dose NH4Cl addition decreased porewater pH and reduced As concentration.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Junhao Qin, Jidong Ying, Huashou Li, Rongliang Qiu, Chuxia Lin
Summary: This study aimed to investigate the effects of rainwater-borne hydrogen peroxide (H2O2) on the uptake of arsenic by rice plants and the emission of greenhouse gases in paddy rice systems. The results showed that H2O2 reacted with Fe2+ in the soil, leading to a reduction in available arsenic for rice plants. In addition, H2O2 inhibited methanogens, resulting in a decrease in methane emission. The study also suggested that rainwater-borne H2O2 could impact other biogeochemical processes in the ecosystem.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Muhammad Kashif Irshad, Ali Noman, Yang Wang, Yingjie Yin, Chong Chen, Jianying Shang
Summary: This study found that the application of goethite-modified biochar (GB) significantly reduced the accumulation of cadmium (Cd) and arsenic (As) in rice plants. GB amendment decreased the bioavailability of Cd and As in the soil, increased Fe-plaque formation on root surfaces, and altered the microbial community in the rice rhizosphere. The use of GB effectively improved the quality of rice grains and provided a valuable method to protect public health by mitigating the co-occurrence of Cd and As in paddy soils.
ENVIRONMENTAL RESEARCH
(2022)
Article
Engineering, Environmental
Honghong Yuan, Qing Wan, Yue Huang, Zheng Chen, Xiaojia He, Williamson Gustave, Maria Manzoor, Xingmei Liu, Xianjin Tang, Lena Q. Ma, Jianming Xu
Summary: Increasing temperature favored the release of total As, arsenite (As(III)) and arsenate (As(V)) into soil pore-water, leading to higher As(III) accumulation in rice grains at warmer treatment. The study also found that Xanthomonadales order, Alcaligenaceae family, and arsC gene were enriched in rhizosphere soils at 33 degrees C, contributing to enhanced As(V) reductive dissolution into soil pore-water. Overall, the research provides insights on how warmer temperatures may exacerbate As accumulation in rice grains in the future.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Xuhui Zhang, Matthew C. Reid
Summary: This study reveals that methane generation activity can suppress the biovolatilization of arsenic in flooded rice paddy soil by enhancing the rate of arsenic demethylation. This finding contributes to a better understanding of the biogeochemical processes regulating arsenic biovolatilization in anaerobic soil environments.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Xu Fang, Iso Christl, Andrea E. Colina Blanco, Britta Planer-Friedrich, Fang-Jie Zhao, Ruben Kretzschmar
Summary: Soil sulfate amendment and intermittent flooding can effectively decrease the accumulation of inorganic arsenic (iAs) in rice grains. Continuous flooding, regardless of sulfate amendment, leads to rice straighthead disease and increased accumulation of dimethylarsenate (DMA) in grains. The study indicates the importance of combining sulfate amendment and intermittent flooding for improving rice yield and quality in arsenic-affected areas.
ENVIRONMENTAL POLLUTION
(2023)
Article
Metallurgy & Metallurgical Engineering
Zi-yan Qian, Sheng-guo Xue, Meng-qian Cui, Chuan Wu, Wai-chin Li
Summary: The addition of FeOS can significantly reduce the arsenic content in paddy soils and increase rice biomass, possibly by promoting the formation of iron plaque and altering microbial community structure.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2021)
Article
Environmental Sciences
Shen Zheng, Yulin Liao, Chao Xu, Yi Wang, Quan Zhang, Qihong Zhu, Hanhua Zhu, Yuqing Sun, Yaoyu Zhou, Delai Zhong, Daoyou Huang
Summary: Milk vetch can reduce Cd accumulation in rice and promote the formation of iron plaque in the soil. In addition, milk vetch treatment significantly affects soil properties and soil microbial community structure. The application of milk vetch is of great significance in improving rice quality and soil environment.
Article
Environmental Sciences
Md Shafiqul Islam, Abdoul Salam Issiaka Abdoul Magid, Yali Chen, Liping Weng, Md Yasir Arafat, Zulqarnain Haider Khan, Jie Ma, Yongtao Li
Summary: This study aimed to reduce the accumulation of metal(loids) in rice grains by adding charred eggshell, corncob biochar, and eggshell-corncob biochar. The results showed that all treatments significantly reduced the content of cadmium in rice grains, but had little effect on arsenic.
Article
Environmental Sciences
Xiaoyang Lin, Huashou Li, Shaoying Ai
Summary: The study highlights the impact of rainwater and trace H2O2 irrigation on arsenic methylation and volatilization in paddy soil, as well as the accumulation of arsenic in different parts of rice plants. It was found that both rainwater and trace H2O2 irrigation significantly affected the transformation of arsenic species in soil and led to decreased total arsenic and inorganic arsenic content in rice plants.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Environmental Sciences
Fang-Lin Li, Ching-Ming Yang, Chien-Hui Syu, Dar-Yuan Lee, Ben-Jei Tsuang, Kai-Wei Juang
JOURNAL OF SOILS AND SEDIMENTS
(2016)
Article
Engineering, Environmental
Jeng-Yan Su, Chien-Hui Syu, Dar-Yuan Lee
JOURNAL OF HAZARDOUS MATERIALS
(2018)
Article
Environmental Sciences
Yu-Cheng Lai, Chien-Hui Syu, Pin-Jie Wang, Dar-Yuan Lee, Chihhao Fan, Kai-Wei Juang
SCIENCE OF THE TOTAL ENVIRONMENT
(2018)
Article
Environmental Sciences
Chia-Hsing Lee, Chung-Chi Wang, Huan-Hsuan Lin, Sang Soo Lee, Daniel C. W. Tsang, Shih-Hao Jien, Yong Sik Ok
SCIENCE OF THE TOTAL ENVIRONMENT
(2018)
Article
Agronomy
Chien-Hui Syu, Pei-Rung Wu, Chia-Hsing Lee, Kai-Wei Juang, Dar-Yuan Lee
JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
(2019)
Article
Environmental Sciences
Chien-Hui Syu, Pei-Wen Chen, Chia-Chen Huang, Dar-Yuan Lee
ENVIRONMENTAL POLLUTION
(2020)
Article
Environmental Sciences
Yu-Lin Kuo, Chia-Hisng Lee, Shih-Hao Jien
Article
Environmental Sciences
Chien-Hui Syu, Liang-Yu Chen, Dar-Yuan Lee
Summary: This study investigated the effects of gallium (Ga) and indium (In) on the growth and uptake of wheat plants. It found that aluminum toxicity in wheat seedlings increased with Ga and In concentrations in acidic soils, and indium phytotoxicity was present in both neutral and acidic soils. The concentration of Ga and In in roots was approximately one order of magnitude higher than in the shoots of wheat seedlings, and Ga had a higher translocation capability from roots to shoots compared to In.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Yi-Jie Liao, Chien-Hui Syu, Dar-Yuan Lee
Summary: This study found that under flooded conditions, the concentrations of inorganic arsenic in soil pore water and water spinach increased significantly compared to upland conditions. Despite higher Fe plaque formation on root surfaces under flooded conditions, it was not effective in preventing arsenic uptake by the plant tissue. Consequently, the dietary risk of consuming inorganic arsenic through water spinach grown in flooded soils was higher than in upland soils.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Chemical
Ming-Hsi Lee, Ed-Haun Chang, Chia-Hsing Lee, Jyun-Yuan Chen, Shih-Hao Jien
Summary: The study on the effects of rice husk biochar and cattle manure compost on a sandy loam rural soil in southern Taiwan showed that both amendments promoted soil aggregation and enriched soil organic carbon. The addition of compost further enhanced organic carbon enrichment in microaggregates and mesoaggregates, suggesting their potential role in enhancing carbon sequestration.
Article
Environmental Sciences
Yi-Hsuan Ke, Chien-Hui Syu, Yi-Jie Liao, Dar-Yuan Lee
Summary: This study investigated the effects of water management and phosphate application on the arsenic phytotoxicity and accumulation in water spinach grown in arsenic-contaminated soils. The results showed that upland cultivation was more effective than flooding cultivation in reducing the accumulation of inorganic arsenic in the edible parts of water spinach.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Guan-Wei Chen, Dar-Yuan Lee, Pei-Jen Chen
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Environmental Sciences
Chien-Hui Syu, Chih-Han Yu, Dar-Yuan Lee
ENVIRONMENTAL POLLUTION
(2020)
Article
Environmental Sciences
Chien-Hui Syu, Po-Hsuan Chien, Chia-Chen Huang, Pei-Yu Jiang, Kai-Wei Juang, Dar-Yuan Lee
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2017)