Article
Chemistry, Physical
Lijia Dong, Shengbo Li, Yefei Jin, Baowei Hu, Guodong Sheng
Summary: In this study, CaAl hydrotalcite or hydroxyapatite decorated invasive plant (Solidago canadensis)-derived biochar were synthesized and found to have better Eu(III) adsorption efficiency compared to other materials, with adsorption mechanisms mainly involving surface complexation, ion exchange, and precipitation.
APPLIED SURFACE SCIENCE
(2021)
Article
Environmental Sciences
Dawid Skrzypczak, Daniel Szopa, Katarzyna Mikula, Grzegorz Izydorczyk, Sylwia Basladynska, Viktoria Hoppe, Katarzyna Pstrowska, Zbigniew Wzorek, Halyna Kominko, Marek Kulazynski, Konstantinos Moustakas, Katarzyna Chojnacka, Anna Witek-Krowiak
Summary: This paper presents a method of converting leather tannery wastes into biochar and enriching the biochar with micronutrients using a spray method. The enriched biochar exhibited high bioavailability of nutrients and showed effective fertilizer performance in both in vitro and in vivo tests. This method aligns with the concept of circular economy and has environmental benefits.
Article
Engineering, Environmental
Adrian Pastor, Chunping Chen, Gustavo de Miguel, Francisco Martin, Manuel Cruz-Yusta, Dermot O'Hare, Ivana Pavlovic, Luis Sanchez
Summary: A Eu3+ doped Zn2Al-CO3 based layered double hydroxide (LDH) was developed as a photocatalyst for efficient NOx gas removal under visible light irradiation. The Eu3+ doping induced modifications in the electronic band structure and improved the NOx removal efficiency by 47%. The doped LDHs exhibited long-term photocatalytic stability and high selectivity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Fuat Guzel, Cumali Yilmaz
Summary: The magnetic separable biochar nanocomposite (MWPC) synthesized in this study demonstrated high sorption capacity for lead removal from water and could be effectively separated using a magnetic process for recycling.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Review
Engineering, Environmental
Qianwei Feng, Bing Wang, Miao Chen, Pan Wu, Xinqing Lee, Ying Xing
Summary: Invasive plants pose threats to ecosystems and human health, while biochar has shown potential in managing them. Biochar derived from invasive plants exhibits significant differences in structure, composition, and adsorption performance compared to traditional biochar, and can be utilized in environmental remediation and agricultural soil improvement. However, there is still limited research on this topic, highlighting the need for further exploration of the potential of invasive plants in biochar production and applications.
RESOURCES CONSERVATION AND RECYCLING
(2021)
Article
Chemistry, Physical
Anna S. Semenkova, Anna Yu. Romanchuk, Irina F. Seregina, Ivan Mikheev, Valentina S. Svitelman, Stepan N. Kalmykov
Summary: The present study investigated the sorption behavior of Eu(III) on kaolinite, focusing on two kaolinite samples with different origins and compositions. A high-purity natural sample of kaolinite was used to examine the dependence of sorption on ionic strength, pH, and radionuclide concentrations, and compared with another kaolinite sample containing admixtures of other clay minerals. The study also observed the effect of cations leaching from clay on the sorption. Based on experimental results, a thermodynamic sorption model of Eu(III) sorption onto kaolinite was developed, taking into account ion-exchange, surface complexation reaction, and competition with Al3+ sorption. The model was successfully tested on literature data for other kaolinite samples.
APPLIED CLAY SCIENCE
(2023)
Article
Agricultural Engineering
Rohit Kushwaha, Ram Sharan Singh, Devendra Mohan
Summary: This study compared the removal efficiency of arsenite [As(III)] and arsenate [As(V)] using peanut shell biochar (PSB) and modified peanut shell biochar (MPSB) in aqueous solutions. The modification process involved KMnO4 and KOH. MPSB showed higher sorption efficiency than PSB for both As(III) (86%) and As(V) (91.26%) at pH 6, initial concentration of 1 mg/L, adsorbent dose of 0.5 g/L, and equilibrium time of 240 min at 100 rpm. The adsorption mechanism was suggested to be multi-layer chemisorption according to the Freundlich isotherm and pseudo-second order kinetic model. Fourier transform infrared spectroscopy indicated the significant contribution of -OH, C-C, C--C, and C-O-C groups in the adsorption process. Thermodynamic study confirmed the spontaneous and endothermic nature of the adsorption process. The results also showed that PSB and MPSB can be regenerated and reused for three cycles. This study highlights the potential of peanut shell biochar as a cost-effective, environmentally friendly, and efficient adsorbent for arsenic removal from water.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Chao Ren, Mengzi Zhou, Zhengmao Liu, Lixin Liang, Xiaozhan Li, Xiancai Lu, Hongtao Wang, Junfeng Ji, Luming Peng, Guangjin Hou, Wei Li
Summary: This study utilized F-19 solid-state NMR spectroscopy to investigate fluoride sorption products on 2:1 MgAl LDHs and their relationship with the LDH structure. The results showed that Al-F is the predominant mode of fluoride sorption at low pH, while Mg-F is predominant at high pH. These findings provide insights into the different roles of surface >MgOH and >AlOH sites in defluoridation processes.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Oshrat Levy-Ontman, Chanan Yanay, Ofra Paz-Tal, Adi Wolfson
Summary: The use of algae cell-wall polysaccharides for adsorbing heavy metals from wastewaters has shown potential, but further research is needed. The acidity of the functional groups on the polysaccharides was found to be positively correlated with the sorption yield of europium ions. Adsorption of europium ions occurs via interactions with the functional groups on the polysaccharides.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Environmental Sciences
X. Cuong Nguyen, T. Thanh Huyen Nguyen, T. Hong Chuong Nguyen, Quyet Van Le, T. Yen Binh Vo, T. Cuc Phuong Tran, D. Duong La, Gopalakrishnan Kumar, V. Khanh Nguyen, S. Woong Chang, W. Jin Chung, D. Duc Nguyen
Summary: This study compared the adsorption of methyl orange dye by biochars produced from wattle bark, mimosa, and coffee husks, finding that mimosa biochar had the best adsorption efficiency. However, coffee husk biochar was not recommended for MO removal as it could cause water discoloration when used in excess.
Article
Environmental Sciences
Yidan Luo, Yu Han, Ying Hua, Mingshan Xue, Shuohan Yu, Longshuai Zhang, Zuozhu Yin, Xibao Li, Xuewen Ma, Hongyan Wu, Tongxin Liu, Yang Shen, Bin Gao
Summary: In this study, nickel-aluminium layered double hydroxides/biochar nanocomposites were prepared and applied in synergistic adsorption-photodegradation of tetracycline. The nanocomposites showed strong adsorption and photodegradation capabilities, surpassing the individual components.
Review
Environmental Sciences
Lei Yang, Yuanyuan Deng, Zihan Shu, Qiang Chen, Hailan Yang, Xiaofei Tan
Summary: Plant invasion caused by human activities is a serious problem that affects ecosystem diversity and has economic implications. Recent studies have focused on the use of biochar in environmental protection. Using invasive plants as feedstock to produce biochar can achieve ecological and resource benefits, solving issues caused by invasive plants and bringing economic benefits.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Review
Agronomy
Irina Gabriela Cara, Denis Topa, Ioan Puiu, Gerard Jitareanu
Summary: Soil pesticide contamination caused by modern agriculture is a significant global issue. Biochar, as a renewable and economical carbonaceous material, provides a natural solution for immobilizing pesticides and improving soil health. However, its impact in agricultural contaminated soil is influenced by various factors, which require further research on mechanisms and controlling factors.
Article
Geochemistry & Geophysics
Kaitlin Kim Karlotta Kammerlander, Lydia Koehler, Nina Huittinen, Frank Bok, Robin Steudtner, Cathleen Oschatz, Manja Vogel, Thorsten Stumpf, Eike Brunner
Summary: The study investigated f-element sorption on biogenic silica, revealing two different uptake mechanisms, surface adsorption and incorporation/precipitation.
APPLIED GEOCHEMISTRY
(2021)
Article
Environmental Sciences
Xiaoliang Fan, Qingqing Cao, Fanyue Meng, Bing Song, Zhongqiang Bai, Yan Zhao, Dandan Chen, Yan Zhou, Min Song
Summary: The FeAl-LDH supported by char effectively activated hydrogen peroxide to degrade phenol with good reusability and low iron leaching. OH radicals played a key role in the degradation process, and both homogeneous and heterogeneous processes occurred during phenol oxidation.