1. Unanswered issues related to the COVID-19 pandemic

   • Sylwia Ufnalska
   • Eric Lichtfouse

   Editorial 03 May 2021 Pages: 3523 - 3524

   

2. Comment on ‘Ecotoxicity of copper input and accumulation for soil biodiversity in vineyards’ by Karimi et al. (2021)

   • Gwenaël Imfeld
   • Joëlle Duplay
   • Sylvain Payraudeau

   Commentary 24 August 2021 Pages: 3525 - 3527

3. Reply to the comment by Imfeld et al. on ‘Ecotoxicity of copper input and accumulation for soil biodiversity in vineyards’ by Karimi et al. (2021)

   • Battle Karimi
   • Pierre-Alain Maron
   • Lionel Ranjard

   Commentary 25 June 2021 Pages: 3529 - 3530

4. Conversion of organics and minerals into electricity and microalgae using a dual-membrane cylinder photo-microbial fuel cell

   • Gang Li
   • Haixing Chang
   • Xingran Zhang

   Original Paper 08 May 2021 Pages: 3531 - 3537

   

5. Energy composting allows rapid degradation of food waste using a water bath heated with electricity or solar energy

   • Bing Li
   • Zhihua Shi
   • Zhiying Dong

   Original Paper 11 May 2021 Pages: 3539 - 3545

   

6. Convolutional neural network with near-infrared spectroscopy for plastic discrimination

   • Jingjing Xia
   • Yue Huang
   • Shungeng Min

   Original Paper 24 June 2021 Pages: 3547 - 3555

   

7. Biochar promotes methane production during anaerobic digestion of organic waste

   • Leilei Xiao
   • Eric Lichtfouse
   • Fanghua Liu

   Original Paper 08 May 2021 Pages: 3557 - 3564

   

8. High micropore number and specific surface of carbon fibers pretreated with a swarm of CO₂ micro–nanobubbles

   • Joon Hyuk Lee
   • Soon Hong Lee
   • Dong Hack Suh

   Original Paper 06 May 2021 Pages: 3565 - 3571

   

9. Higher photocatalytic removal of organic pollutants using pangolin-like composites made of 3–4 atomic layers of MoS₂ nanosheets deposited on tourmaline

   • Ming Hao
   • Hao Li
   • Fei Wang

   Original Paper 04 May 2021 Pages: 3573 - 3582

   

10. Locked on salt? Excessive consumption of high-sodium foods during COVID-19 presents an underappreciated public health risk: a review

    • Xue Zhang
    • Bo Chen
    • Jie Han

    Review 01 June 2021 Pages: 3583 - 3595

    

11. Advanced packaging for distribution and storage of COVID-19 vaccines: a review

    • Dakuri Ramakanth
    • Suman Singh
    • Kirtiraj K. Gaikwad

    Review 03 June 2021 Pages: 3597 - 3608

    

12. Microwave pyrolysis of coal, biomass and plastic waste: a review

    • Aravind Suresh
    • Alaguabirami Alagusundaram
    • Sibi Sankar

    Review 17 May 2021 Pages: 3609 - 3629

    

13. Graphene-based materials for environmental applications: a review

    • V. Karthik
    • P. Selvakumar
    • R. Rajeswari

    Review 13 July 2021 Pages: 3631 - 3644

    

14. MoS₂-based nanocomposites: synthesis, structure, and applications in water remediation and energy storage: a review

    • M. I. A. Abdel Maksoud
    • Ahmed G. Bedir
    • David W. Rooney

    Review Open access 20 July 2021 Pages: 3645 - 3681

    

15. Transitional metal chalcogenide nanostructures for remediation and energy: a review

    • Sneha Yadav
    • Shivamurthy Ravindra Yashas
    • Harikaranahalli Puttaiah Shivaraju

    Review 17 July 2021 Pages: 3683 - 3700

    

16. The sunflower plant family for bioenergy, environmental remediation, nanotechnology, medicine, food and agriculture: a review

    • Duyen Thi Cam Nguyen
    • Thuong Thi Nguyen
    • Thuan Van Tran

    Review 17 July 2021 Pages: 3701 - 3726

    

17. Nanoferrites heterogeneous catalysts for biodiesel production from soybean and canola oil: a review

    • Manish Kumar Bharti
    • Sonia Chalia
    • P. B. Sharma

    Review 04 May 2021 Pages: 3727 - 3746

    

18. Microextraction of bioactive compounds using deep eutectic solvents: a review

    • Lamia Nakhle
    • Miriana Kfoury
    • Hélène Greige-Gerges

    Review 06 July 2021 Pages: 3747 - 3759

    

19. Diffusive gradients in thin films for the measurement of labile metal species in water and soils: a review

    • Siday Marrugo-Madrid
    • Marta Turull
    • Sergi Díez

    Review 19 May 2021 Pages: 3761 - 3788

    

20. Photocatalytic removal of parabens and halogenated products in wastewater: a review

    • Timothy O. Ajiboye
    • Opeyemi A. Oyewo
    • Damian C. Onwudiwe

    Review 18 July 2021 Pages: 3789 - 3819

    

21. Pollution levels, characteristics, and sources of polycyclic aromatic hydrocarbons in atmospheric particulate matter across the Hu line in China. A review

    • Yongfu Wu
    • Yan Shi
    • Yibin Ren

    Review 19 June 2021 Pages: 3821 - 3836

    

22. Size-segregated particulate matter and health effects in air pollution in India: a review

    • N. Manojkumar
    • B. Srimuruganandam

    Review 20 July 2021 Pages: 3837 - 3858

    

23. Sources, chemistry, bioremediation and social aspects of arsenic-contaminated waters: a review

    • Syed Ejaz Hussain Mehdi
    • Rabia Amen
    • Pau Loke Show

    Review 11 June 2021 Pages: 3859 - 3886

    

24. Ashes from organic waste as reagents in synthetic chemistry: a review

    • Katta Venkateswarlu

    Review 22 May 2021 Pages: 3887 - 3950