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IJERPH
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Organic Solid Waste Valorisation and Environmental Health
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Organic Solid Waste Valorisation and Environmental Health

A special issue of International Journal of Environmental Research and Public Health (ISSN 1660-4601). This special issue belongs to the section "Environmental Health".

Deadline for manuscript submissions: closed (30 December 2022) | Viewed by 7755

Special Issue Editors

Prof. Dr. Feng Shen

E-Mail Website
Guest Editor
Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
Interests: biomass catalysis; biochar; biofuel; sustainable chemistry
Special Issues, Collections and Topics in MDPI journals
Dr. Xiao Zhang

E-Mail Website
Guest Editor
School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
Interests: waste management; air quality and control; sustainable chemistry

Special Issue Information

Dear Colleagues,

The production of organic solid waste (plastic waste, biomass waste, municipal sludge, etc.) is huge. Health and safety issues arise from improper disposal and management of organic solid wastes. The U.S. Public Health Service identified 22 human diseases that are linked to improper management of organic solid wastes. Organic solid wastes contain a large amount of biomass energy, thus having enormous potential in resource utilization. Solid, liquid, and gaseous biomass energy and carbon-based materials can be obtained via biological processes, thermochemical routes, microwave-assisted processes, and mechanochemical methods—for example, carbonization of organic waste to obtain biochar and catalytic conversion to produce biofuels.

This Special Issue of the International Journal of Environmental Research and Public Health (IJERPH) focuses on the current state of knowledge on the links between organic solid waste valorization and environmental health. Short communications, original papers, and review articles are welcome to this issue. 

The topics of interest include but are not limited to:

  1. Impact of organic solid waste on health and environment;
  2. Organic waste management processing technology;
  3. Methods for organic waste (plastic waste, biomass waste, municipal sludge) valorization.

Prof. Dr. Feng Shen
Prof. Dr. Xiao Zhang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. International Journal of Environmental Research and Public Health is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2500 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • organic solid waste
  • biomass
  • carbon-based material
  • biofuel
  • waste management
  • platform chemicals
  • sustainable chemistry

Published Papers (4 papers)

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Research

16 pages, 4706 KiB  
Article
Spirulina platensis Immobilized Alginate Beads for Removal of Pb(II) from Aqueous Solutions
by Oyunbileg Purev, Chulhyun Park, Hyunsoo Kim, Eunji Myung, Nagchoul Choi and Kanghee Cho
Int. J. Environ. Res. Public Health 2023, 20(2), 1106; https://doi.org/10.3390/ijerph20021106 - 08 Jan 2023
Cited by 4 | Viewed by 1637
Abstract
Microalgae contain a diversity of functional groups that can be used as environmental adsorbents. Spirulina platensis is a blue-green microalga that comprises protein-N, which is advantageous for use in nitrogen-containing biomass as adsorbents. This study aimed to enhance the adsorption properties of alginate [...] Read more.
Microalgae contain a diversity of functional groups that can be used as environmental adsorbents. Spirulina platensis is a blue-green microalga that comprises protein-N, which is advantageous for use in nitrogen-containing biomass as adsorbents. This study aimed to enhance the adsorption properties of alginate hydrogels by employing Spirulina platensis. Spirulina platensis was immobilized on sodium alginate (S.P@Ca-SA) via crosslinking. The results of field-emission scanning electron microscopy, Fourier-transform infrared, and X-ray photoelectron spectroscopy analyses of the N-containing functional groups indicated that Spirulina platensis was successfully immobilized on the alginate matrix. We evaluated the effects of pH, concentration, and contact time on Pb(II) adsorption by S.P@Ca-SA. The results demonstrated that S.P@Ca-SA could effectively eliminate Pb(II) at pH 5, reaching equilibrium within 6 h, and the maximum Pb(II) sorption capacity of S.P@Ca-SA was 87.9 mg/g. Our results indicated that S.P@Ca-SA fits well with the pseudo-second-order and Freundlich models. Compared with Spirulina platensis and blank alginate beads, S.P@Ca-SA exhibited an enhanced Pb(II) adsorption efficiency. The correlation implies that the amino groups act as adsorption sites facilitating the elimination of Pb(II). Full article
(This article belongs to the Special Issue Organic Solid Waste Valorisation and Environmental Health)
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15 pages, 5291 KiB  
Article
Highly Efficient Transfer Hydrogenation of Biomass-Derived Furfural to Furfuryl Alcohol over Mesoporous Zr-Containing Hybrids with 5-Sulfosalicylic Acid as a Ligand
by Jirui Yang, Haixin Guo and Feng Shen
Int. J. Environ. Res. Public Health 2022, 19(15), 9221; https://doi.org/10.3390/ijerph19159221 - 28 Jul 2022
Cited by 2 | Viewed by 1368
Abstract
The catalytic transfer hydrogenation of biomass-derived furfural to furfuryl alcohol under mild conditions is an attractive topic in biorefinery. Herein, mesoporous Zr-containing hybrids (Zr-hybrids) with a high surface area (281.9–291.3 m2/g) and large pore volume (0.49–0.74 cm3/g) were prepared [...] Read more.
The catalytic transfer hydrogenation of biomass-derived furfural to furfuryl alcohol under mild conditions is an attractive topic in biorefinery. Herein, mesoporous Zr-containing hybrids (Zr-hybrids) with a high surface area (281.9–291.3 m2/g) and large pore volume (0.49–0.74 cm3/g) were prepared using the biomass-derived 5-sulfosalicylic acid as a ligand, and they were proven to be highly efficient for the Meerwein–Ponndorf–Verley reduction of furfural to furfuryl alcohol at 110 °C, with the highest furfuryl alcohol yield reaching up to 97.8%. Characterizations demonstrated that sulfonic and carboxyl groups in 5-sulfosalicylic acid molecules were coordinated with zirconium ions, making zirconium ions fully dispersed, thus leading to the formation of very fine zirconia particles with the diameter of <2 nm in mesoporous Zr-hybrids. The interaction between the 5-sulfosalicylic acid ligands and zirconium ions endowed mesoporous Zr-hybrids with relatively higher acid strength but lower base strength, which was beneficial for the selective reduction of furfural to furfuryl alcohol. A recycling study was performed over a certain mesoporous Zr-hybrid, namely meso-Zr-SA15, demonstrating that the yield and selectivity of furfuryl alcohol remained almost unchanged during the five consecutive reaction cycles. This study provides an optional method to prepare hybrid catalysts for biomass refining by using biomass-derived feedstock. Full article
(This article belongs to the Special Issue Organic Solid Waste Valorisation and Environmental Health)
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19 pages, 5388 KiB  
Article
Removal of Methyl Red from Aqueous Solution Using Polyethyleneimine Crosslinked Alginate Beads with Waste Foundry Dust as a Magnetic Material
by Hyunsoo Kim, Oyunbileg Purev, Eunji Myung, Nagchoul Choi and Kanghee Cho
Int. J. Environ. Res. Public Health 2022, 19(15), 9030; https://doi.org/10.3390/ijerph19159030 - 25 Jul 2022
Cited by 6 | Viewed by 1819
Abstract
In this study, a cost-effective adsorbent based on sodium alginate (SA) with waste foundry dust (WFD) was fabricated for the removal of methyl red (MR) from aqueous media. However, the utilization of WFD/SA beads to remove anionic dyes (such as MR) from effluents [...] Read more.
In this study, a cost-effective adsorbent based on sodium alginate (SA) with waste foundry dust (WFD) was fabricated for the removal of methyl red (MR) from aqueous media. However, the utilization of WFD/SA beads to remove anionic dyes (such as MR) from effluents has limitations associated with their functional groups. To improve the adsorption performance, WFD/SA-polyethyleneimine (PEI) beads were formed via PEI crosslinking onto WFD/SA beads, which could be attributed to the formation of amide bonds from the carboxyl and amino groups due to the change of N-H bonds in the reaction. The Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) results indicated that PEI was crosslinked on the WFD/SA via a chemical reaction. In the FTIR spectra of WFD/SA-PEI, peaks of the –COO (asymmetric) stretching vibration shifted to 1598 and 1395 cm−1, which could be attributed to the hydrogen-bonding effect of the N–H groups in PEI. In the N1s spectrum, three deconvoluted peaks were assigned to N in –N= (398.2 eV), –NH/–NH2 (399.6 eV), and NO2 (405.2 eV). WFD/SA-PEI beads were assessed and optimized for aqueous MR adsorption. The WFD/SA-PEI beads showed a high removal efficiency for MR (89.1%) at an initial concentration of 1000 mg/L, and presented a maximum MR adsorption capacity of 672.7 mg/g MR. The adsorption process showed a good fit with the pseudo-second-order kinetic model and the Langmuir adsorption isotherm model. The amino and hydroxyl groups in the WFD/SA-PEI beads facilitate strong hydrogen bonding and electrostatic interactions. Moreover, these WFD/SA-PEI beads were easily recovered after the adsorption process. Full article
(This article belongs to the Special Issue Organic Solid Waste Valorisation and Environmental Health)
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16 pages, 3086 KiB  
Article
Solvent-Free Synthesis of MgO-Modified Biochars for Phosphorus Removal from Wastewater
by Siyu Xu, De Li, Haixin Guo, Haodong Lu, Mo Qiu, Jirui Yang and Feng Shen
Int. J. Environ. Res. Public Health 2022, 19(13), 7770; https://doi.org/10.3390/ijerph19137770 - 24 Jun 2022
Cited by 6 | Viewed by 2243
Abstract
Adsorption is an efficient technology for removing phosphorus from wastewater to control eutrophication. In this work, MgO-modified biochars were synthesized by a solvent-free ball milling method and used to remove phosphorus. The MgO-modified biochars had specific surface areas 20.50–212.65 m2 g−1 [...] Read more.
Adsorption is an efficient technology for removing phosphorus from wastewater to control eutrophication. In this work, MgO-modified biochars were synthesized by a solvent-free ball milling method and used to remove phosphorus. The MgO-modified biochars had specific surface areas 20.50–212.65 m2 g−1 and pore volume 0.024–0.567 cm3 g−1. The as-prepared 2MgO/BC-450-0.5 had phosphorus adsorption capacities of 171.54 mg g−1 at 25 °C and could remove 100% of phosphorus from livestock wastewater containing 39.51 mg L−1 phosphorus. The kinetic and isotherms studied show that the pseudo-second-order model (R2 = 0.999) and Langmuir models (R2 = 0.982) could describe the adoption process well. The thermodynamic analysis indicated that the adsorption of phosphorus on the MgO-modified biochars adsorbent was spontaneous and endothermic. The effect of pH, FTIR spectra and XPS spectra studies indicated that the phosphorus adsorption includes a protonation process, electrostatic attraction and precipitation process. This study provides a new strategy for biochar modification via a facile mechanochemical method. Full article
(This article belongs to the Special Issue Organic Solid Waste Valorisation and Environmental Health)
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