ORCID Profile
0000-0002-5224-0984
Current Organisations
The New Zealand Institute for Plant & Food Research Limited
,
New Zealand Institute for Plant and Food Research Ltd
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Publisher: Elsevier BV
Date: 11-2021
Publisher: Elsevier BV
Date: 2021
Publisher: CSIRO Publishing
Date: 2004
DOI: 10.1071/SR03100
Abstract: Pesticides are indispensable in modern agricultural production however, their off-site migration and detrimental effects on surface water and groundwater quality cause concern. Current pesticide usage and trend data show pesticide use is widespread in New Zealand. According to national surveys, concentrations of most pesticides in groundwater are usually low, and their occurrence has been attributed to non-point sources of contamination. Although it is well established that the environmental fate of pesticides is governed by complex interactions of many processes such as sorption, degradation, and transport, our understanding of these basic mechanisms in the vadoze zone is too far from complete to predict quantitatively the fate of trace residues of pesticides in various soil types within one geographical location. This is mainly due to the vexing issue of the complex nature of soil and its lateral heterogeneity, such as spatial and temporal variability in field-scale. The use of simulation models to predict the environmental fate of pesticides using laboratory- and field-derived parameters is discussed. The objective of this overview is to present past and recent environmental fate work on pesticides carried out under New Zealand conditions, to provide a wider perspective on the subject matter, and to give some recommendations for future research directions.
Publisher: Wiley
Date: 13-11-2009
Publisher: Elsevier BV
Date: 12-2017
Publisher: Elsevier BV
Date: 08-2012
Publisher: Informa UK Limited
Date: 06-10-2021
Publisher: Elsevier BV
Date: 04-2022
Publisher: Elsevier BV
Date: 09-2018
DOI: 10.1016/J.BIORTECH.2018.05.022
Abstract: Pollution of water by single antibiotics has been investigated in depth. However, in reality, a wide range of different contaminants is often mixed in the aquatic environment (contaminant cocktail). Here, single and competitive sorption dynamics of ionizable norfloxacin (NOR), sulfamerazine (SMR) and oxytetracycline (OTC) by both pristine and modified biochars were investigated. Sorption kinetics of the three antibiotics was faster in ternary-solute than single-solute system. Sorption efficiency was enhanced in the competitive system for NOR by the pristine biochar, and for OTC by both the pristine biochar and the modified biochar, while SMR sorption by the pristine biochar and the KOH-modified biochar was inhibited. Sorption was governed by electrostatic interactions, π-π EDA and H-bonds for antibiotics sorption by biochar. SMR and OTC sorption by biochar was influenced by cation bridging and surface complexation, respectively. This research finding will guide the development of treatment procedures for water polluted by multiple antibiotics.
Publisher: Springer Science and Business Media LLC
Date: 26-10-2017
DOI: 10.1007/S11356-017-0301-Y
Abstract: In China, intensive pig farming has led to serious environmental issues with the need to dispose off large quantities of pig manure. Chinese agriculture relies on high inputs of chemical fertilizers leading to gradual decreasing organic matter contents in many arable soils. We propose that hydrochars produced from pig manure could potentially replace chemical fertilizers and, at the same time, resolve the waste disposal problem. The hydrochars used in this study were produced from pig manure at five different pyrolysis temperatures ranging between 160 and 240 °C and three residence times (1, 5, and 8 h). All hydrochars were assessed for composition of major elements. Results showed that the yield and organic matter (OM) contents in hydrochars were 50-74% and 40-56%, respectively. The concentrations of total nitrogen (N), potassium (K
Publisher: Elsevier BV
Date: 05-2007
Publisher: Elsevier BV
Date: 06-2018
DOI: 10.1016/J.SCITOTENV.2018.01.002
Abstract: In recent years, biochar has been extensively studied as a sorbent for immobilizing contaminants and minimizing their bioavailability in soils. Few studies have been conducted to evaluate the interactions between biochar and compost in soils and their impact on degradation of organic contaminants. In the present study, soils with high organic carbon content (HOC) and low organic carbon content (LOC) were spiked with 100mg·kg
Publisher: Informa UK Limited
Date: 29-03-2021
Publisher: Springer Science and Business Media LLC
Date: 31-10-2015
Publisher: Elsevier BV
Date: 08-2021
Publisher: Elsevier BV
Date: 05-2018
DOI: 10.1016/J.CHEMOSPHERE.2018.01.162
Abstract: Biochar effect on the potential mobility of dibutyl phthalate (DBP), cadmium (Cd), and lead (Pb) in co-contaminated soils is not well investigated. A laboratory leaching study was conducted to evaluate the effect of biochars derived from bamboo (BB) and pig (PB) on the leachability of DBP, Cd, and Pb through soil columns packed with two soils with low or high organic carbon content (LOC 0.35% C: HOC 2.24% C) and spiked with DBP, Cd, and Pb. Application of PB to the LOC soil significantly (P < 0.05) reduced the leaching loss by up to 88% for DBP, 38% for Cd, and 71% for Pb, whereas its impact was insignificant in the HOC soil. The higher efficacy of PB in reducing the leaching of DBP, Cd, and Pb in the LOC soil than that of BB might be related to PB's higher specific surface area, surface alkalinity, pH, and mineral contents compared to those of BB. Co-contamination of Cd and Pb enhanced leaching of DBP in the LOC soil treated with PB, possibly by competition for the sorption sites. Leaching of DBP, Cd, and Pb were significantly (P < 0.05) higher in the LOC soil than in the HOC soil. This study revealed that the effectiveness of biochars was dependent on the soil organic carbon content. Application of PB to the LOC soil was effective in reducing the leaching risk of DBP, Cd, and Pb.
Publisher: Elsevier BV
Date: 08-2016
Publisher: Elsevier
Date: 2012
Location: New Zealand
Location: New Zealand
No related grants have been discovered for Karin Mueller.