Structure alteration of a sandy-clay soil by biochar amendments

Risultato della ricerca: Article

38 Citazioni (Scopus)

Abstract

PurposeThe aim of the present study was to investigate structure alterations of a sandy-clay soil upon addition of different amounts of biochar (f bc). Materials and methodsAll thef bcsamples were analyzed by high energy moisture characteristic (HEMC) technique and 1 H nuclear magnetic resonance (NMR) relaxometry. HEMC was applied in order to evaluate aggregate stability of biocharamended soil samples. 1 H NMR relaxometry experiments were conducted for the evaluation of the pore distributions through the investigation of water dynamics of the same samples. Results and discussionThe HEMC technique revealed improvement in aggregate stability through measurements of the amount of drainable pores and the stability ratio. The latter increased as the amount of biochar was raised up. The 1 H NMR relaxometry revealed a unimodalT1 distribution for both the sole sandy-clay soil and the biochar. Conversely, a bimodalT1distribution was acquired for all the differentf bc samples. ConclusionsImprovement in aggregate stability was obtained as biochar was progressively added to the sandy-clay soil. A dual mechanism of water retention has been hypothesized. In particular, intra-aggregate porosity was indicated as the main responsible for molecular water diffusion whenf bccomprised between 0 and 0.33. Conversely, inter-aggregate porosity resulted predominant, through swelling processes, when f bc overcame 0.33.
Lingua originaleEnglish
pagine (da-a)816-824
Numero di pagine9
RivistaJournal of Soils and Sediments
Volume15
Stato di pubblicazionePublished - 2015

Fingerprint

sandy clay
aggregate stability
clay soil
sandy soil
nuclear magnetic resonance
water retention
swelling
porosity
moisture
water
energy
soil

All Science Journal Classification (ASJC) codes

  • Earth-Surface Processes
  • Stratigraphy

Cita questo

Structure alteration of a sandy-clay soil by biochar amendments. /.

In: Journal of Soils and Sediments, Vol. 15, 2015, pag. 816-824.

Risultato della ricerca: Article

@article{f6f380a8ce3a46c59897fcd3a999f329,
title = "Structure alteration of a sandy-clay soil by biochar amendments",
abstract = "PurposeThe aim of the present study was to investigate structure alterations of a sandy-clay soil upon addition of different amounts of biochar (f bc). Materials and methodsAll thef bcsamples were analyzed by high energy moisture characteristic (HEMC) technique and 1 H nuclear magnetic resonance (NMR) relaxometry. HEMC was applied in order to evaluate aggregate stability of biocharamended soil samples. 1 H NMR relaxometry experiments were conducted for the evaluation of the pore distributions through the investigation of water dynamics of the same samples. Results and discussionThe HEMC technique revealed improvement in aggregate stability through measurements of the amount of drainable pores and the stability ratio. The latter increased as the amount of biochar was raised up. The 1 H NMR relaxometry revealed a unimodalT1 distribution for both the sole sandy-clay soil and the biochar. Conversely, a bimodalT1distribution was acquired for all the differentf bc samples. ConclusionsImprovement in aggregate stability was obtained as biochar was progressively added to the sandy-clay soil. A dual mechanism of water retention has been hypothesized. In particular, intra-aggregate porosity was indicated as the main responsible for molecular water diffusion whenf bccomprised between 0 and 0.33. Conversely, inter-aggregate porosity resulted predominant, through swelling processes, when f bc overcame 0.33.",
author = "Giuseppe Alonzo and Giorgio Baiamonte and Pellegrino Conte and Valentina Marsala and {De Pasquale}, Claudio and Giulia Cimo'",
year = "2015",
language = "English",
volume = "15",
pages = "816--824",
journal = "Journal of Soils and Sediments",
issn = "1439-0108",
publisher = "Springer Science + Business Media",

}

TY - JOUR

T1 - Structure alteration of a sandy-clay soil by biochar amendments

AU - Alonzo, Giuseppe

AU - Baiamonte, Giorgio

AU - Conte, Pellegrino

AU - Marsala, Valentina

AU - De Pasquale, Claudio

AU - Cimo', Giulia

PY - 2015

Y1 - 2015

N2 - PurposeThe aim of the present study was to investigate structure alterations of a sandy-clay soil upon addition of different amounts of biochar (f bc). Materials and methodsAll thef bcsamples were analyzed by high energy moisture characteristic (HEMC) technique and 1 H nuclear magnetic resonance (NMR) relaxometry. HEMC was applied in order to evaluate aggregate stability of biocharamended soil samples. 1 H NMR relaxometry experiments were conducted for the evaluation of the pore distributions through the investigation of water dynamics of the same samples. Results and discussionThe HEMC technique revealed improvement in aggregate stability through measurements of the amount of drainable pores and the stability ratio. The latter increased as the amount of biochar was raised up. The 1 H NMR relaxometry revealed a unimodalT1 distribution for both the sole sandy-clay soil and the biochar. Conversely, a bimodalT1distribution was acquired for all the differentf bc samples. ConclusionsImprovement in aggregate stability was obtained as biochar was progressively added to the sandy-clay soil. A dual mechanism of water retention has been hypothesized. In particular, intra-aggregate porosity was indicated as the main responsible for molecular water diffusion whenf bccomprised between 0 and 0.33. Conversely, inter-aggregate porosity resulted predominant, through swelling processes, when f bc overcame 0.33.

AB - PurposeThe aim of the present study was to investigate structure alterations of a sandy-clay soil upon addition of different amounts of biochar (f bc). Materials and methodsAll thef bcsamples were analyzed by high energy moisture characteristic (HEMC) technique and 1 H nuclear magnetic resonance (NMR) relaxometry. HEMC was applied in order to evaluate aggregate stability of biocharamended soil samples. 1 H NMR relaxometry experiments were conducted for the evaluation of the pore distributions through the investigation of water dynamics of the same samples. Results and discussionThe HEMC technique revealed improvement in aggregate stability through measurements of the amount of drainable pores and the stability ratio. The latter increased as the amount of biochar was raised up. The 1 H NMR relaxometry revealed a unimodalT1 distribution for both the sole sandy-clay soil and the biochar. Conversely, a bimodalT1distribution was acquired for all the differentf bc samples. ConclusionsImprovement in aggregate stability was obtained as biochar was progressively added to the sandy-clay soil. A dual mechanism of water retention has been hypothesized. In particular, intra-aggregate porosity was indicated as the main responsible for molecular water diffusion whenf bccomprised between 0 and 0.33. Conversely, inter-aggregate porosity resulted predominant, through swelling processes, when f bc overcame 0.33.

UR - http://hdl.handle.net/10447/98624

M3 - Article

VL - 15

SP - 816

EP - 824

JO - Journal of Soils and Sediments

JF - Journal of Soils and Sediments

SN - 1439-0108

ER -