CHEMOSPHERE
·
2021
·
IF 7.086
Haris Muhammad,Ting Wei,Geng Cao,ShengHui Yu,XinHao Ren,HongLei Jia,Atif Saleem,Li Hua,JunKang Guo,Yongtao Li
The application of crops straw and biochar in trace metals remediation from the contaminated environment attracted more and more attention during the past decade. Although there has been some review work on the mechanism of trace metals stabilization by crops straw, the effects and mechanisms of interaction among soil indigenous-microbes and crops-straw for trace metal adsorption and stabilization is still unclear. In this study, the dynamic effects along with potential mechanisms of wheat-straw (WS), wheat-straw biochar (WBC) and biologically modified wheat-straw (BMWS) were conducted to investigate the adsorption, leaching behaviour, chemical fractions and bioavailability of cadmium (Cd). The results showed that the biosorption capacity (q e ) was most elevated in the BMWS treatment (14.42 mg g −1 ) as compared to WBC (6.28 mg g −1 ) and WS (4.20 mg g −1 ). The application of BMWS, WBC and WS at the rate of 3% significantly reduced Cd concentration in leachate to 53, 45 and 21% respectively, as compared to control. The addition of BMWS reduced the exchangeable Cd fraction resulted an increase in organic matter and carbonate bound Cd fraction in the soil. The DTPA extractable Cd was significantly decreased by 31.2 and 28.6% with the application of BMWS and WBC at 3% w/w respectively as compared to control. The research results may provide a novel perceptive for the development of functional materials and strategies for eco-friendly and sustainable trace metal remediation in contaminated soil and water by combination of straw and soil-indigenous microorganisms .
研究领域:
环境科学
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土壤学
·
微生物学
·
污染控制
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产品关联
DOI
PubMed
高影响因子
GREEN CHEMISTRY
·
2014
·Vol. 17
·期 1
·453-459
·
IF 6.852
Muge Niu,Yucui Hou,Shuhang Ren,Weize Wu,Kenneth N. Marsh
Formic acid (FA) is an important material widely used in the chemical industry and in processes involved in energy storage and transformation. In this work, production of FA from wheat straw, an abundant lignocellulosic biomass, in NaVO3–H2SO4 aqueous solution with molecular oxygen (O2) was studied. The conversion showed high efficiencies: 47% (based on carbon, 75.2% based on mass) of FA and 7.3% (based on carbon, 7.6% based on mass) of acetic acid were obtained. The products mainly come from polysaccharides (hemicellulose and cellulose) in wheat straw. Acetic acid is derived from the acetyl groups in (1) the hemicellulose structure or (2) the deep hydrolysis product, levulinic acid. The removal of each lignocellulosic component in wheat straw follows the order: hemicellulose, lignin and cellulose. The catalytic system shows good reusability, and multiple feedings led to a high concentration of FA, which is beneficial to reduce FA–water separation cost.
研究领域:
生物化学
·
可再生能源
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产品关联
DOI
高影响因子
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
·
2018
·Vol. 102
·期 22
·9831-9842
·
IF 3.34
Wu Mengjie,Liu Hongyu,Guo Junyuan,Yang Chunping
Wheat straws (WS) were pretreated by a two-step pretreatment for enhanced enzymatic hydrolysis. The raw wheat straw (RWS) was firstly soaked in microwave-assisted NaOH solution at the presence of a mixed solution of H 2 O 2 and hexadecyl trimethyl ammonium chloride (HTAC), and the residue was put into methyl orange (MO) solution to obtain the final substrate for enzymatic hydrolysis. It was interesting to find that the WS after the first step of the pretreatment could effectively remove MO in the second step of the pretreatment with the highest removal efficiency of 98.86% at the MO concentration of 25 mg/L and at the adsorbent-adsorbate ratio of 0.8%. Meanwhile, the enzymatic hydrolysis efficiency of the WS that was pretreated by the two steps was higher than that of the RWS as well as the first-step-pretreated WS. Enzymatic hydrolysis experiment showed that the glucose concentration after 48-h hydrolysis was 4.85 g/L at the solid loading of 5%, compared with the RWS of 0.90 g/L and the first-step-pretreated WS of 4.33 g/L. This suggested that the two-step pretreatment method could not only make WS as a good adsorbent but also a more biodegradable lignocellulosic material. Characterization analysis showed that the specific surface area and the cellulose content of the WS were both increased after the two-step pretreatment, indicating that the pretreatment method was significant to properly utilizing WS as biosorbent and biofuel. Besides, a possible mechanism for the effect of the pretreatment on the WS was proposed.
研究领域:
生物化学
·
可再生能源
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DOI
PubMed
高影响因子
Heliyon
·
2024
·
IF 3.4
Yihang Yue,Xiaoju Yue,Xiaofeng Tang,Lin Han,Jinnong Wang,Shifeng Wang,Chun Du
The discharge of organic pollutants by the textile and dyeing industries presents an escalating threat to aquatic environments, necessitating the development of effective remediation strategies. This study introduces the utilization of graphite-like structured activated carbon (AC), derived from highland barley straw—a biomass unique to the Plateau regions of China, including Tibet, Qinghai, and Gansu—as a support material for the TiO 2 catalyst. TiO 2 /AC composites with different TiO 2 loadings were synthesized by ultrasonic impregnation. The TiO 2 /AC composites were found to be polycrystalline materials composed of anatase and rutile phases. The TiO 2 nanoparticles are well-dispersed over the surface of the AC. The photocatalytic activity of these composites was evaluated through their capacity to degrade a methylene blue (MB) solution upon irradiation. It was observed that the inclusion of TiO 2 increases the number of adsorption sites and active sites for methylene blue, with the photocatalytic activity being notably higher at a 3-wt% TiO 2 loading, achieving a remarkable 99.6 % degradation efficiency for 100 mg/L MB within 100 min. The experimental kinetic data for the photocatalytic process follow the pseudo-first-order kinetic model. Furthermore, TiO 2 /AC retains high photocatalytic activity after five reaction cycles. This research provides valuable insights into the application of biomass-derived materials for the purification of water, offering a sustainable solution to both pollution and agricultural waste challenges in Plateau areas of China.
研究领域:
环境科学
·
材料科学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2024
·
IF 4.1
Shirong Sun,Erhu Li,Xuliang Lin,Xueqing Qiu
Efficient biomass fractionation is key to enhancing the productivity and profitability of biorefining but faces challenges such as strong carbon–carbon bonds in lignin and irreversible condensation reactions during extraction. In this study, hydroxyl-containing nucleophilic reagents are integrated into acidic deep eutectic solvents (DESs) for wheat straw pretreatment, achieving over 74.3 % lignin removal and 94.3 % cellulose retention. This method preserves more than 98.6 % of the β –O–4 linkages in lignin, and the nucleophilic reagents, introduced in-situ at the benzylic position of lignin, act as both a surfactant on cellulose and a stabilizer for isolated lignin. This dual functionality enhances enzymatic hydrolysis, resulting in 75.3 wt% glucose and 51.0 wt% xylose yields. Additionally, the pyrolysis yield of methoxy-deficient monophenols increases from 27.7 wt% to 38.6 wt%. This approach effectively addresses key challenges in biomass fractionation, improving carbon efficiency and facilitating the full valorization of lignocellulose.
研究领域:
生物化学
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生物质能
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产品关联
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2021
·
IF 6.789
Wei Liu,Jie Huang,Anthony J. Weatherley,Wenjun Zhai,Fuya Liu,Zhiling Ma,Yunhong Jiao,Chao Zhang,Bing Han
Turning agricultural waste into effective remediation materials is a highly promising approach for reducing in-field crop burning and promoting affordable wastewater treatment . This comparative study aims to identify active adsorption sites for methylene blue (MB), crystal violet (CV), and cadmium (Cd) as model pollutants on wheat straw materials modified by a thermal partial-oxidation process. The optimal modification temperature was found to be 160–180 °C for MB and CV adsorption, which is much lower than that of Cd(II) at 220–240 °C. A strong linear correlation exits between total surface group concentrations and Cd(II) uptake, indicating that both acidic and basic functional groups are favourable adsorption sites of Cd(II). By contrast, basic groups generated at higher modification temperatures might have adverse effects on MB and CV adsorption. These results provided mechanistic insights and predictive approach into reuse of agricultural waste for environmental remediation.
研究领域:
环境科学
·
农业科学
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产品关联
DOI
PubMed
高影响因子
Environmental Technology & Innovation
·
2024
·
IF 6.7
Yanhao Zhang,Wenlu Zhou,Chengying Liu,Guanghui Liu,Yi Li,Botao Ding,Peng Zhang,Xu Zhang,Zhibin Zhang
Wheat straw biochar (BC) or modified wheat straw biochar (MBC) could affect the aggregate structure of soil, effectively adsorb heavy metal and reduce the bioavailability of heavy metals in soil. TGA, BET, FTIR and SEM were used to characterize the surface morphology and structure of BC and MBC. The adsorption properties of BC and MBC on Pb(II) and Cd(II) in solution systems were investigated by batch experiments, and the remediation performance of Pb and Cd contaminated sediment by BC or MBC were studied by pot experiments. The results showed that MBC had a larger specific surface area of 46.04 m 2 /g and total pore volume 0.0555 cm 3 /g; the adsorption isotherms of Pb(II) and Cd(II) for BC and MBC were more suitable for Langmuir model ( R 2 over 0.91), and the maximum adsorption capacities of Pb(II) and Cd(II) by MBC could reach 71.14 and 115.64 mg/g, respectively. BC or MBC promoted the transformation of Pb and Cd from the extractable acid fraction to the oxidizable and residual fraction, reduced the migration of heavy metals and enhanced the stability of aggregates. Therefore, the results provided a perspective for the dredged contaminated sediments used as planting soil. In addition, BC or MBC, as soil amendments, could improve the abundance of microbial community. At the phylum level, the main dominant bacteria were Proteobacteria and Bacteroidetes .
研究领域:
环境科学
·
土壤学
·
微生物学
✓ 已验证
产品关联
DOI
高影响因子
CHEMOSPHERE
·
2024
·
IF 8.1
Yasir Hamid,Yonglong Chen,Qiang Lin,Muhammad Haris,Muhammad Usman,Muhammad Saqib Rashid,Ioannis Anastopoulos,Bilal Hussain,Hayssam M. Ali,Fakhir Hannan,Xianyuan Yin,Xiaoe Yang
The impact of functionality of biochar on pressing environmental issue of cadmium (Cd) and lead (Pb) co-contamination in simultaneous soil and water systems has not sufficiently reported. This study investigated the impact of Fe- and Mg-functionalized wheat straw biochar (Fe-WSBC and Mg-WSBC) on Cd and Pb adsorption/immobilization through batch sorption and column leaching trials. Importantly, Fe-WSBC was more effective in adsorbing Cd and Pb (82.84 and 111.24 mg g −1 ), regeneration ability (removal efficiency 94.32 and 92.365), and competitive ability under competing cations (83.15 and 84.36%) compared to other materials (WSBC and Mg-WSBC). The practical feasibility of Fe-WSBC for spiked river water verified the 92.57% removal of Cd and 85.73% for Pb in 50 mg L −1 and 100 mg L −1 contamination, respectively. Besides, the leaching of Cd and Pb with Fe-WSBC under flow-through conditions was lowered to (0.326 and 17.62 mg L −1 ), respectively as compared to control (CK) (0.836 and 40.40 mg L −1 ). In short, this study presents the applicable approach for simultaneous remediation of contaminated water and soil matrices, offering insights into environmentally friendly green remediation strategies for heavy metals co-contaminated matrices.
研究领域:
环境科学
·
土壤学
·
水文学
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产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Yu Zhong,Yue Wu,Ruonan Zhu,Qixuan Lin,Xingjie Wang,Junli Ren,Huan Wang,Fengguang Du
Steam explosion pretreatment technology is one of the most widely used pretreatment technologies for biomass, but with the defects of high energy consumption and high cellulose loss. In this study, a low-energy pretreatment strategy was proposed for steam explosion of wheat straw coupling with screw extrusion and ultra-low acid spraying, and the corresponding relationship between different pretreatment conditions and steam explosion energy consumption was explored. The results showed that 93.8 % of cellulose was retained by screw extrusion and the addition of 0.1 % sulfuric acid spray under steam explosion (160 °C-5min, 0.618 MPa), accordingly, the enzymatic hydrolysis reaction for 72 h resulted in a cellulose enzyme degradation rate of 60.9 %. Compared with the control group (196 °C-5 min, 1.4 MPa), higher cellulose retention, was achieved at lower temperature and pressure, and the energy consumption decreased from 1.29 kJ/g to 1.15 kJ/g, which was a reduction of 10.89 %.
研究领域:
生物工程
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2020
·
IF 3.232
Shaohua Liu,Zengchen Liu,Qingfeng Li,Hongjun Xia,Weijie Yang,Ruixia Wang,Yanxia Li,Hui Zhao,Boshi Tian
Colorimetric and fluorescent detection of F − have attracted enormous interest owing to their simplicity, low-cost and high selectivity. However, traditional colorimetric and fluorescent sensors mainly based on the insoluble and toxic organic molecules, which is not favorable for sensing F − in water media and living cells. In this work, we designed fluorescent carbon dots (CDs) with excellent water solubility and good biocompatibility as a colorimetric and fluorescent dual-model probe for the detection of F − . The CDs were prepared by a green, one-step hydrothermal strategy from wheat straw without any additives and surface passivation . The obtained CDs exhibited a bright blue fluorescence, special response to F − and low cytotoxicity. More interestingly, a significant color change from light yellow to red can be observed by the naked eye upon addition of F − ions to the CDs solution probably due to the formation of hydrogen bonding between CDs and F − . Besides, the fluorescence of CDs also can be selectively quenched by F − with the detection limit of about 49 μM. Additionally, the CDs are also applied to intracellular imaging and sensing of F − in living cells. This strategy may provide a new method for the detection of F − in water media and biological systems.
研究领域:
分析化学
·
生物医学工程
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2016
·
IF 5.267
Huan Ren,Min-Hua Zong,Hong Wu,Ning Li
The biorefineries of lignocellulosic biomass have attracted increasing interest recently. However, large water consumption in the large-scale biorefineries remains a major problem. In this work, utilization of abundant seawater as an alternative to freshwater for ionic liquid (IL) pretreatment of lignocellulosic biomass was reported for the first time. In addition, enzymatic hydrolysis of IL-pretreated biomass and microbial lipid production from wheat straw hydrolysate were conducted in seawater. It was found that seawater had no significantly negative effect on enzymatic hydrolysis as well as IL pretreatment. After grass lignocelluloses were pretreated by 50% cholinium IL–seawater mixtures at 90 °C for 6 h and washed by seawater, the residues became highly susceptible to enzymatic hydrolysis; the reducing sugar yields of 54–72% were obtained in pH 4.8 seawater in the subsequent enzymatic hydrolysis of the residues. The lipid yield of 4.5 g/L and lipid coefficient of 0.21 g/g of sugar were achieved after cultivation of Trichosporon fermentans on wheat straw hydrolysate with the sugar concentration of approximately 30 g/L for 3 days.
研究领域:
生物工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2022
·
IF 8.035
Chao Li,Jian Zhao,Huixin Tong,Xiaodong Fan,Xinjie Fang,Yuli Sha,Zhizhong Sun,Wenyi Chu
Ethyl levulinate (EL) is a key platform compound for the catalytic conversion of biomass. Ionic liquids (ILs) have attracted much attention due to their unique tunable structures and wide range of applications, a series of SO 3 H-functionalized imidazole based acidic ILs were designed and synthesized. These SO 3 H-functionalized ILs were used as the catalyst to be applied to the conversion of the wheat straw to EL. Among them, SimIL-6 exhibited good catalytic performance for the conversion of wheat straw to EL in ethanol. When the concentration of SimIL-6 was 30 mmol/L, the yield of EL could reach 20.1 wt% at 180 ℃ for 2 h. Furthermore, SimIL-6 as the catalyst was reused at least six times without significant reduction in catalytic efficiency. This work shed light on a new approach towards the full utilization of biomass and efficient degradation of biomass to EL.
研究领域:
化学工程
·
生物质能
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）