
Journal of Zhejiang Agricultural Sciences ›› 2026, Vol. 67 ›› Issue (2): 488-494.DOI: 10.16178/j.issn.0528-9017.20250216
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JIANG Haoran1(
), HUANG Yue2, LI Shuai1, YU Jiqian2, YING Shanshan1(
)
Received:2025-03-20
Online:2026-02-28
Published:2026-03-07
Contact:
YING Shanshan
CLC Number:
JIANG Haoran, HUANG Yue, LI Shuai, YU Jiqian, YING Shanshan. Study on the adsorption performance of Thalia dealbata Fraser biochar for nitrogen and phosphorus in water bodies[J]. Journal of Zhejiang Agricultural Sciences, 2026, 67(2): 488-494.
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URL: http://www.zjnykx.cn/EN/10.16178/j.issn.0528-9017.20250216
| 生物质炭 | 元素含量/% | H/C(摩尔比) | O/C(摩尔比) | SBET/(m2·g-1) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C | H | O | N | Na | K | Ca | Mg | 灰分 | ||||
| TD | 42.61 | 6.60 | 25.43 | 5.01 | 0.73 | 3.11 | 3.64 | 0.51 | — | 1.86 | 0.45 | — |
| TD4 | 54.32 | 3.01 | 12.63 | 3.86 | 0.96 | 1.12 | 6.37 | 1.96 | 24.13 | 0.66 | 0.17 | 2.81 |
| HTD4 | 40.67 | 2.41 | 11.79 | 2.62 | 0.45 | 0.69 | 2.47 | 0.86 | 50.28 | 0.71 | 0.22 | 70.73 |
| TD5 | 60.14 | 2.05 | 11.34 | 3.16 | 1.41 | 2.98 | 5.83 | 1.44 | 33.67 | 0.41 | 0.14 | 3.26 |
| HTD5 | 47.39 | 1.98 | 10.56 | 2.71 | 1.27 | 2.63 | 4.52 | 1.09 | 60.45 | 0.50 | 0.17 | 105.49 |
| TD6 | 63.60 | 1.89 | 11.40 | 2.01 | 1.21 | 2.64 | 5.77 | 1.30 | 45.31 | 0.36 | 0.13 | 15.36 |
| HTD6 | 50.84 | 1.79 | 10.37 | 1.65 | 0.93 | 2.12 | 5.11 | 0.83 | 74.19 | 0.42 | 0.15 | 110.12 |
Table 1 Elemental composition and specific surface area of different biochar materials
| 生物质炭 | 元素含量/% | H/C(摩尔比) | O/C(摩尔比) | SBET/(m2·g-1) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C | H | O | N | Na | K | Ca | Mg | 灰分 | ||||
| TD | 42.61 | 6.60 | 25.43 | 5.01 | 0.73 | 3.11 | 3.64 | 0.51 | — | 1.86 | 0.45 | — |
| TD4 | 54.32 | 3.01 | 12.63 | 3.86 | 0.96 | 1.12 | 6.37 | 1.96 | 24.13 | 0.66 | 0.17 | 2.81 |
| HTD4 | 40.67 | 2.41 | 11.79 | 2.62 | 0.45 | 0.69 | 2.47 | 0.86 | 50.28 | 0.71 | 0.22 | 70.73 |
| TD5 | 60.14 | 2.05 | 11.34 | 3.16 | 1.41 | 2.98 | 5.83 | 1.44 | 33.67 | 0.41 | 0.14 | 3.26 |
| HTD5 | 47.39 | 1.98 | 10.56 | 2.71 | 1.27 | 2.63 | 4.52 | 1.09 | 60.45 | 0.50 | 0.17 | 105.49 |
| TD6 | 63.60 | 1.89 | 11.40 | 2.01 | 1.21 | 2.64 | 5.77 | 1.30 | 45.31 | 0.36 | 0.13 | 15.36 |
| HTD6 | 50.84 | 1.79 | 10.37 | 1.65 | 0.93 | 2.12 | 5.11 | 0.83 | 74.19 | 0.42 | 0.15 | 110.12 |
| 生物质炭 | 污染物 | Freundlich模型 | Langmuir模型 | ||||
|---|---|---|---|---|---|---|---|
kf/ (mg·g-1) | 1/n | R2 | qm/ (mg·g-1) | b/ (L·mg-1) | R2 | ||
| TD4 | NO3 -N | 0.205 | 0.685 | 0.954 | 10.023 | 0.009 | 0.935 |
| $\mathrm{NH}_4^{+}$-N | 0.248 | 0.651 | 0.971 | 9.210 | 0.011 | 0.943 | |
| $\mathrm{PO}_4^{3-}$ | 0.440 | 0.392 | 0.983 | 3.030 | 0.048 | 0.968 | |
| HTD4 | NO3 -N | 0.718 | 0.705 | 0.985 | 29.409 | 0.014 | 0.990 |
| $\mathrm{NH}_4^{+}$-N | 0.558 | 0.745 | 0.978 | 32.585 | 0.010 | 0.962 | |
| $\mathrm{PO}_4^{3-}$ | 0.393 | 0.867 | 0.987 | 79.436 | 0.004 | 0.990 | |
| TD5 | NO3 -N | 0.422 | 0.535 | 0.969 | 7.276 | 0.019 | 0.933 |
| $\mathrm{NH}_4^{+}$-N | 0.376 | 0.572 | 0.948 | 7.822 | 0.017 | 0.894 | |
| $\mathrm{PO}_4^{3-}$ | 0.652 | 0.341 | 0.965 | 3.567 | 0.051 | 0.944 | |
| HTD5 | NO3 -N | 1.217 | 0.590 | 0.982 | 27.594 | 0.018 | 0.986 |
| $\mathrm{NH}_4^{+}$-N | 0.812 | 0.688 | 0.974 | 37.989 | 0.010 | 0.962 | |
| $\mathrm{PO}_4^{3-}$ | 0.483 | 0.835 | 0.976 | 62.352 | 0.005 | 0.985 | |
| TD6 | NO3 -N | 0.228 | 0.682 | 0.967 | 9.531 | 0.011 | 0.966 |
| $\mathrm{NH}_4^{+}$-N | 0.197 | 0.717 | 0.991 | 10.885 | 0.009 | 0.981 | |
| $\mathrm{PO}_4^{3-}$ | 0.787 | 0.336 | 0.951 | 4.157 | 0.057 | 0.936 | |
| HTD6 | $\mathrm{NO}_3^{-}$-N | 1.370 | 0.557 | 0.990 | 26.238 | 0.019 | 0.981 |
| $\mathrm{NH}_4^{+}$-N | 0.375 | 0.825 | 0.985 | 44.536 | 0.006 | 0.989 | |
| $\mathrm{PO}_4^{3-}$ | 0.780 | 0.781 | 0.951 | 73.559 | 0.006 | 0.993 | |
Table 2 Fitted adsorption isotherms of biochar for $\mathrm{NO}_3^{-}$-N-N,$\mathrm{NH}_4^{+}$-N,and $\mathrm{PO}_4^{3-}$
| 生物质炭 | 污染物 | Freundlich模型 | Langmuir模型 | ||||
|---|---|---|---|---|---|---|---|
kf/ (mg·g-1) | 1/n | R2 | qm/ (mg·g-1) | b/ (L·mg-1) | R2 | ||
| TD4 | NO3 -N | 0.205 | 0.685 | 0.954 | 10.023 | 0.009 | 0.935 |
| $\mathrm{NH}_4^{+}$-N | 0.248 | 0.651 | 0.971 | 9.210 | 0.011 | 0.943 | |
| $\mathrm{PO}_4^{3-}$ | 0.440 | 0.392 | 0.983 | 3.030 | 0.048 | 0.968 | |
| HTD4 | NO3 -N | 0.718 | 0.705 | 0.985 | 29.409 | 0.014 | 0.990 |
| $\mathrm{NH}_4^{+}$-N | 0.558 | 0.745 | 0.978 | 32.585 | 0.010 | 0.962 | |
| $\mathrm{PO}_4^{3-}$ | 0.393 | 0.867 | 0.987 | 79.436 | 0.004 | 0.990 | |
| TD5 | NO3 -N | 0.422 | 0.535 | 0.969 | 7.276 | 0.019 | 0.933 |
| $\mathrm{NH}_4^{+}$-N | 0.376 | 0.572 | 0.948 | 7.822 | 0.017 | 0.894 | |
| $\mathrm{PO}_4^{3-}$ | 0.652 | 0.341 | 0.965 | 3.567 | 0.051 | 0.944 | |
| HTD5 | NO3 -N | 1.217 | 0.590 | 0.982 | 27.594 | 0.018 | 0.986 |
| $\mathrm{NH}_4^{+}$-N | 0.812 | 0.688 | 0.974 | 37.989 | 0.010 | 0.962 | |
| $\mathrm{PO}_4^{3-}$ | 0.483 | 0.835 | 0.976 | 62.352 | 0.005 | 0.985 | |
| TD6 | NO3 -N | 0.228 | 0.682 | 0.967 | 9.531 | 0.011 | 0.966 |
| $\mathrm{NH}_4^{+}$-N | 0.197 | 0.717 | 0.991 | 10.885 | 0.009 | 0.981 | |
| $\mathrm{PO}_4^{3-}$ | 0.787 | 0.336 | 0.951 | 4.157 | 0.057 | 0.936 | |
| HTD6 | $\mathrm{NO}_3^{-}$-N | 1.370 | 0.557 | 0.990 | 26.238 | 0.019 | 0.981 |
| $\mathrm{NH}_4^{+}$-N | 0.375 | 0.825 | 0.985 | 44.536 | 0.006 | 0.989 | |
| $\mathrm{PO}_4^{3-}$ | 0.780 | 0.781 | 0.951 | 73.559 | 0.006 | 0.993 | |
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