Article
Engineering, Chemical
Xiong Tao, Fengxi Chen, Jun Li, Yunling Liu, Xiaowu Hu, Rong Chen
Summary: This study found that Bi2S3 nanoparticles prepared from dual sulfur sources efficiently remove Cr(VI) and Cu2+ from aqueous solutions. The selectivity and stability of the removal process for Cr(VI) and Cu2+ by BS-D were excellent. The mutual promotional effects between Cu2+ and Cr(VI) during their co-removal by BS-D were attributed to electrostatic attraction and smaller pH variation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Polymer Science
Davron Bekchanov, Mukhtar Mukhamediev, Peter Lieberzeit, Gulbakhor Babojonova, Sunnat Botirov
Summary: Chemical modification of polyvinylchloride with polyethylenepolyamine produces anion exchange resin (PPE-1). Characterization techniques indicate weak base amino groups and microporous structure in PPE-1, which effectively removes hexavalent chromium ions from aqueous media. Adsorption kinetics follow a pseudo-second order model and Freundlich isotherm, with a maximum adsorption capacity of 218.4 mg/g for hexavalent chromium ions. Thermodynamic data suggest spontaneous endothermic processes and a chemisorption reaction, with PPE-1 showing 98% removal efficiency for hexavalent chromium ions in wastewater.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
Article
Green & Sustainable Science & Technology
Vijay Kumar, Gaurav Rattan, Preeti Tewatia, Manpreet Kaur, Deepak Pathania, Sonal Singhal, Anupama Kaushik
Summary: Cellulose nanofibers (CNFs) derived from rice straw were used to develop effective fluorescent sensors for simultaneous detection of chromium Cr(VI) and mercury Hg(II) ions, addressing the problems of rice straw burning and heavy metal pollution. Modified CNFs with L-histidine (CHIS) exhibited significant fluorescence quenching in response to Cr(VI) and Hg(II) ions, with detection limits of 2.236 nM and 3.97 nM, respectively. XPS studies revealed strong interactions of CHIS with the metal ions, leading to fluorescence quenching. The sensor showed high selectivity, stability, and usability up to 4 cycles.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Agricultural Engineering
Lili Wang, Yibo Li, Lei Xu, Dongsheng Sun, Yihao Wang, Zhongjiang Wang
Summary: This study investigated the pretreatment of rice straw using cow breeding wastewater. The results showed that filtering the wastewater improved the pretreatment effect by adsorbing ammonium nitrogen and achieving higher solids loading. Semi-sealed treatment had slightly lower lignin removal and methane production compared to sealed treatment, while the results of open treatment were similar to the control group.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Chemical
Miles Ownby, David-Alexandre Desrosiers, Celine Vaneeckhaute
Summary: This study evaluated the potential of four regeneration chemistries for desorbing phosphorus from a commercially available HIX-Nano resin hybridized with iron oxide nanoparticles. The combination of recovered NH4OH and tap water showed the highest phosphorus recovery potential, with low cost, high efficiency, and minimal impact on resin longevity. This technology may offer a cost-effective and sustainable solution to the global phosphorus problem in wastewater treatment applications.
Article
Engineering, Environmental
Nur Shafiqah Jamaluddin, Nur Hashimah Alias, Sadaki Samitsu, Nur Hidayati Othman, Juhana Jaafar, Fauziah Marpani, Woei Jye Lau, Yong Zen Tan
Summary: Hexavalent chromium is a hazardous heavy metal that can cause severe effects on human health and the environment. In this study, delaminated MXene was successfully synthesized and used to efficiently remove hexavalent chromium from water through adsorption-assisted photocatalysis.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Heba A. El-Gawad, Ghada Kadry, Hamdy A. Zahran, M. H. Hussein
Summary: This study focuses on using an economical sorbent made of activated carbon derived from rice straw to remove chromium from tannery wastewater. The impact of various parameters on chromium removal was assessed and analyzed. The study also investigated the adsorption isotherms, kinetics, and desorption of chromium from the sorbent. The results showed that the improved surface morphology and increased surface area of the activated carbon resulted in efficient chromium removal.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Green & Sustainable Science & Technology
Yingnan He, Jianbing Chen, Jiapei Lv, Yimin Huang, Shuxing Zhou, Wenyan Li, Yongtao Li, Fengqin Chang, Hucai Zhang, Thomas Wagberg, Guangzhi Hu
Summary: The study of composite alginate gel beads with Eichhornia crassipes biochar and polyethyleneimine as a surface modifier for adsorbing Cr(VI) showed promising results, indicating high adsorption capacity and potential for wastewater treatment.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Yunxiao Liu, Guoshuai Liu, Han Wang, Peng Wu, Qun Yan, Dimitris V. Vayenas
Summary: In this study, a PPy/PTS coated SS plate was used as a modified anode for the electrocoagulation treatment of electroplating wastewater, achieving high removal rates for zinc and nickel. The coating also showed good corrosion inhibition properties and could be characterized through various analytical techniques.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Analytical
Jing Zhang, Di Cheng, Qu Sheng, Chuanqi Feng, Feng Wang, Huimin Wu
Summary: By synthesizing composites of different materials and characterizing them physically, it was found that SnS/Bi2MoO6-2.26% has better visible light absorption performance and carrier transfer efficiency, and it has a lower detection limit and a wider detection range in the detection of Cr (VI).
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Agricultural Engineering
Yuanhang Ai, Shengqiu Feng, Youmei Wang, Jun Lu, Mengdan Sun, Huizhen Hu, Zhen Hu, Ran Zhang, Peng Liu, Hao Peng, Yanting Wang, Limin Cao, Tao Xia, Liangcai Peng
Summary: This study successfully improved lignocellulosic substrates and increased bioethanol yields in transgenic rice through the selection of specific genes and green-style pretreatments. The results show a novel strategy for high bioethanol production by integrating genetically-improved lignocellulosic substrates with optimal one-pot-process technology in bioenergy crops.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Environmental Sciences
Bui Quoc Lap, Nguyen Vu Duc Thinh, Nguyen Tri Quang Hung, Nguyen Hoai Nam, Huyen Thi Thanh Dang, Ho Thanh Ba, Nguyen Minh Ky, Huynh Ngoc Anh Tuan
Summary: Rice straw-derived biochar has shown potential as an effective material for removing organic pollutants from livestock wastewater treatment, with higher removal efficiencies observed in column tests compared to batch experiments.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Engineering, Environmental
Norasikin Othman, Norul Fatiha Mohamed Noah, Raja Norimie Raja Sulaiman, Norela Jusoh, Wan Ting Tan
Summary: Hexavalent chromium from electroplating industries can be reduced to less toxic trivalent form using ELM process. The study focused on continuous removal of chromium from electroplating wastewater, examining the effects of treat ratio, external feed phase, and stripping agent concentration. The simulation model showed good agreement with experimental results, achieving almost 100% extraction of 40 ppm chromium within 3 to 5 minutes.
WATER ENVIRONMENT RESEARCH
(2021)
Article
Engineering, Environmental
Binqiao Ren, Yu Jin, Luyang Zhao, Chongwei Cui, Xiaoxiao Song
Summary: Adsorption materials based on Aspergillus niger spores were chemically modified with CTAB to enhance the biosorption capacity of chromic acid ions. The secondary amine (-NH-) played a crucial role in the reduction adsorption process, reducing hexavalent chromium by transferring electrons to unoccupied orbit of Cr(VI). The fungal biological adsorbent showed promising potential for repeated adsorption and desorption of hexavalent chromium without significant decrease.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Lekan Taofeek Popoola
Summary: In this study, an adsorbent prepared from chemically modified Garcinia kola hull particles was successfully used for the removal of hexavalent chromium from contaminated water. The adsorbent exhibited higher removal efficiency compared to the raw particles and followed the Langmuir isotherm and pseudo-second-order kinetic model. The thermodynamic study indicated that the adsorption process was feasible, spontaneous, and exothermic. SEM, BET, FTIR, XRD, and EDS analyses confirmed the changes in morphology, texture, spectral peak, phase composition, and chemical composition of the adsorbent after chromium sequestration. The cMGK-HP adsorbent showed excellent reusability and high thermal stability, and its adsorption capacity surpassed that of other agrowaste-based adsorbents reported in previous studies.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Xiaofei Li, Chucheng He, Hengyao Liang, Kai Chen, Qian Yao, Chuling Guo, Guining Lu, Zhi Dang
Summary: Organo-mineral composites play a vital role in the mobility and bioavailability of toxic metals in natural environments. This study investigates the interactions between citric acid-schwertmannite (CA-Sch) composites and Cr(VI) through macroscopic experiments and spectroscopic analysis. The results enhance our understanding of the behaviors of Cr(VI) on the CA-Sch composite surface and its fate in AMD-contaminated environments.
ACS EARTH AND SPACE CHEMISTRY
(2022)
Article
Environmental Sciences
Pengling Shao, Hua Yin, Yingchao Li, Yuhao Cai, Caiya Yan, Yibo Yuan, Zhi Dang
Summary: In this study, a biochar supported FeMnMg layered double hydroxide composite was prepared and used for the simultaneous remediation of copper and arsenic contamination in water and soil. The results showed that the composite exhibited good adsorption performance for heavy metals and could reduce the availability of heavy metals in soil. Additionally, the addition of the composite enhanced the activity of soil microorganisms, indirectly promoting the passivation and stabilization of heavy metals.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Environmental Sciences
Cong Fan, Chuling Guo, Wei Chen, Guining Lu, Yu Shen, Zhi Dang
Summary: The study reveals the mechanisms and behaviors of the transformation of Ca-adsorbed Schwertmannite mediated by Fe(II). Adsorbed Ca exerts an inhibitory effect on this transformation process and alters the compositions and pathways of the transformation products.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Review
Environmental Sciences
Zhihong Tu, Qi Wu, Hongping He, Shu Zhou, Jie Liu, Huijun He, Chongmin Liu, Zhi Dang, John R. Reinfelder
Summary: Acid mine drainage (AMD) is a significant source of environmental pollution globally, and the conventional methods for its remedial treatment are costly and may lead to secondary pollution. This review highlights the importance of pyrite surface passivation as a potential solution to prevent or reduce AMD generation and associated pollution. Various pyrite anti-corrosion technologies, including inorganic, organic, and organosilane passivating coatings, are summarized. The need for future research to integrate existing passivation agents or new artificial materials while considering environmental conditions, costs, and long-term passivation performance is emphasized.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Yao Ma, Jinfan Chen, Xiaodong Du, Chunsheng Xie, Jiangmin Zhou, Xueqin Tao, Zhi Dang, Guining Lu
Summary: By applying the molecular imprinting technique, this study selectively sorbed polybrominated diphenyl ethers (PBDEs) in soil washing effluent, demonstrating the potential for selective removal and recycling of surfactant solutions. The adsorption behaviors of the novel molecular imprinted polymers (MIPs) were analyzed, and the results showed that PBDEs' molecular properties greatly influenced their adsorption performance.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Environmental Sciences
Xiongkai Zheng, Bowen Zhang, Weibin Lai, Mengting Wang, Xueqin Tao, Mengyao Zou, Jiangmin Zhou, Guining Lu
Summary: Efficient and environmentally friendly soil amendments are necessary to reduce the risk of metal contaminants to the soil ecosystem. Bovine bone meal (BM) and oyster shell meal (OS) can reduce the mobility and bioavailability of metals by increasing soil pH. The geochemical properties of the soil have a greater impact on metal migration than enzyme activity. BM and OS can suppress the uptake of Cd and Pb by water spinach, keeping them below international safety standards. The protein and sugar content, as well as peroxidase activity, show a negative correlation with metal content in water spinach, while superoxide dismutase activity, ascorbate peroxidase activity, and malondialdehyde content exhibit a positive correlation. BM and OS have minimal disturbance on bacterial composition during heavy metal remediation. Overall, BM and OS are eco-friendly amendments that can improve soil nutrients, stabilize heavy metals, and regulate bacterial communities.
Article
Environmental Sciences
Siyuan Chen, Haiming Cai, Xiaodong Du, Peiwen Wu, Xueqin Tao, Jiangmin Zhou, Zhi Dang, Guining Lu
Summary: This study developed an economical and environmental-friendly adsorbent using shrimp shell for the efficient removal of Tris(2-chloroethyl) phosphate (TCEP) in water environments. The shrimp shell biochar exhibited excellent adsorption performance due to its hierarchical porous structure. The binding mechanisms between TCEP and specific biochar structures were identified as hydrogen bond, van der Waals interactions, Cl-H interactions, and pi-H interactions.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Tian Xie, Zhi Dang, Qian Zhang, Lili Su, Yongxin Zhou, Shudi Li, Jian Zhang, Ronghai Zhang, Changjun Liao, Guining Lu
Summary: This study used sodium persulfate activated by sodium hydroxide to remove 1,2-DCA from aqueous solutions. The results showed that by adjusting the dosing sequence and dosage of sodium persulfate and sodium hydroxide, a removal ratio of 96.24% could be achieved. A free radical reaction was the main pathway of 1,2-DCA degradation, with the superoxide radical playing a key role.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Di Xia, He Liu, Yang Lu, Yanchen Liu, Jiahao Liang, Danping Xie, Guining Lu, Jinrong Qiu, Rui Wang
Summary: A non-target screening method based on high-resolution mass spectrometry was used to investigate the transformation products of sulfonamides during chlorination. A total of 210 transformation products were identified, with 87 tentatively proposed as N-Cl intermediates. Additionally, a diagnostic fragment ion strategy was successfully applied to elucidate the structural relationship between parent compounds and transformation products.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Editorial Material
Engineering, Chemical
Kaibo Huang, Zenghui Diao, Guining Lu
Article
Environmental Sciences
Pengcheng Lin, Hang Liu, Hua Yin, Minghan Zhu, Haoyu Luo, Zhi Dang
Summary: The combined pollution of heavy metals is a global issue. It has been found that loading Mn/Al-layered double oxide onto crab shells biochar can help remediate the combined pollution of Cd and Cu in soil and water. The research shows that LDO/BC exhibits highly efficient performance in remediating e-waste-contaminated soil and reducing the bioavailability of heavy metals.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Environmental Sciences
Tengfei Ma, Hanjin Luo, Jianteng Sun, Yan Pan, Kaibo Huang, Guining Lu, Zhi Dang
Summary: Soil aggregate size plays a crucial role in the distribution and transport of metals. The study found that the total metal content of certain metals exhibited significant spatial heterogeneity, while the physicochemical properties of the soil and various soil constituents could explain the variation in metal distribution. The results highlight the importance of hydrological factors and their impact on metal behavior in coastal mining areas.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Agricultural Engineering
Lehao Lun, Yaoming Su, Xing Gong, Lijuan Zhang, Peipei Meng, Dan Peng, Qianya Zhou, Hao Zeng, Liuchun Zheng
Summary: Diethylenetriamine pentaacetic acid (DTPA) functionalized modified corn stalk cellulose (DCS) was prepared and used for the adsorption of sulfamethoxazole (SMZ) wastewater in the presence of copper (Cu). DCS exhibited hydrophilic groups, larger contact space, and lower steric hindrance, compared to raw corn stalk cellulose (RCS). The adsorption amounts for Cu and SMZ in the binary system were 4.41 mg/g and 29.7 mg/g, respectively. DCS demonstrated good pH buffering capability, resistance to interfering ions, and excellent regeneration performance. Competitive adsorption and complexation synergy occurred between Cu, SMZ, and DCS. Density functional theory (DFT) calculations further explained the adsorption mechanism, showing that DCS had more SMZ adsorption sites and could provide additional adsorption sites for Cu or SMZ.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Environmental Sciences
Hao Zeng, Yaoming Su, Xing Gong, Liuchun Zheng, Lijuan Zhang, Peipei Meng, Qianya Zhou, Jingjing Ren
Summary: In response to Cd, Pb, and Cu pollution in acid mine drainage, a cellulose material (TCIS) containing thiol, carboxyl, and imine groups was prepared. TCIS showed maximum adsorption performances of 53.60, 120.6, and 36.01 mg/g for Cd(II), Pb(II), and Cu(II) at pH 5, respectively. Competitive adsorption between metal ions was observed in the binary and ternary systems, with Cu(II) exhibiting the strongest inhibitory effect.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
