Cited by 282Adsorption and biosorption for pollutant removalPhosphorus and nutrient managementWastewater Treatment and Nitrogen Removal

Characteristics of nitrogen and phosphorus adsorption by Mg-loaded biochar from different feedstocks

Jiang, Yan-Hong, Li, An-Yu, Deng, Hua, Ye, Cheng-Hui, Wu, Yu-Qing, Linmu, Yu-Dan, Hang, Hao-Lin·2019·Bioresource Technology

Abstract

Herein, biochars from 6 different feedstocks (taro straw, corn straw, cassava straw, Chinese fir straw, banana straw, and Camellia oleifera shell) were produced using magnesium chloride (MgCl 2) as a modifier due to their sorption behavior toward NH 4+-N and phosphorus in an aqueous solution. The biochar characteristics were evaluated, including pH, pH PZC, biochar magnesium content, and total pore volume (PV tot). The experimental results in terms of the kinetics and equilibrium isotherms showed that the cassava straw and banana straw biochars exhibited the theoretical maximum saturated adsorption capacities of 24.04 mg·g-1 (NH 4+-N) and 31.15 mg·g-1 (TP), respectively. Biochar produced from these feedstocks had higher magnesium contents and greater total pore volumes, reflecting the significant contributions from magnesium and steric effects. FTIR, XRD, and SEM/EDS analyses demonstrated that NH 4+-N and TP sorption mechanisms predominantly involved surface electrostatic attraction, Mg 2+ precipitates and complexation with surface hydroxyl functional groups.

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Crossref · 10.1016/j.biortech.2018.12.079

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Authors
Jiang, Y.-H., Li, A.-Y., Deng, H., Ye, C.-H., Wu, Y.-Q., Linmu, Y.-D., & Hang, H.-L.
Affiliations
Guangxi Normal University (CN)
Corresponding author
Deng, Hua
Venue
Bioresource Technology
Publisher
Elsevier BV
Published
2019-03
Volume
276
Pages
183-189
ISSN
0960-8524 (ISSN-L)
OpenAlex
W2905863373
Cited by
282
References
40
Citations by year
2026: 26 · 2025: 43 · 2024: 42 · 2023: 49 · 2022: 40 · 2021: 37 · 2020: 35 · 2019: 10
FWCI
8.98
Type
journal article
Language
en
Open access
closed
Locations
  • Bioresource Technology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Natural Science Foundation of China (51778180)
  • University Key Laboratory of Karst Ecology and Environmental Change of Guangxi Province (YRHJ15Z009)
  • Guangxi University Graduate Student Research and Innovation Program (XYCSZ2018067)
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Environmental Science › Waste Management and Disposal › Phosphorus and nutrient management
  • Physical Sciences › Environmental Science › Pollution › Wastewater Treatment and Nitrogen Removal
Keywords
biochar, nitrogen adsorption, phosphorus adsorption, ammonium sorption, Camellia oleifera shell, surface charge, steric effects, adsorption kinetics, adsorption isotherms, hydroxyl groups
MeSH terms
Adsorption, Charcoal, Magnesium, Nitrogen, Phosphorus

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