title: Pilot scale pyrolysis - determination of critical moisture content for sustainable organic waste pyrolysis

authors: Sichone, Kavwa

abstract: Economic feasibility of large scale organic waste pyrolysis was investigated for Inghams Enterprise (Waitoa) chicken dissolved air flotation sludge (DAF) and activated sludge (biosolids) from the Hamilton municipal waste water treatment plant. Processing data was obtained from pilot plant trials using the Lakeland Steel (Rotorua) continuous auger pyrolysis plant using feedstock at 15, 30, 45 and ~80% moisture contents. Economics were calculated based on estimated capital and operating costs of a large scale facility, revenue from selling char, savings from landfill diversion (including transportation and gate costs), energy savings by recycling syngas product and using waste heat for drying feedstock.
For DAF, 15% moisture content gave yields of 21% syngas, 27% char, and 52% oil (dry weight basis). 15% moisture content gave the best processing conditions based on handling properties and degree of autogenesis. The DAF case does not give a payback period due to low scale of operations.
For biosolids, 15% moisture content feedstock gave yields of 46% syngas, 31% char, and 21% oil (wet weight). Difficulties were found with plant blockages at 45% and 80% moisture contents. 15% moisture content gave the best processing conditions and the best economic performance with a payback time of 4.6 years for a facility that could process 11,000 tonnes per year.

text: Pilot scale pyrolysis - determination of critical moisture content for sustainable organic waste pyrolysis Economic feasibility of large scale organic waste pyrolysis was investigated for Inghams Enterprise (Waitoa) chicken dissolved air flotation sludge (DAF) and activated sludge (biosolids) from the Hamilton municipal waste water treatment plant. Processing data was obtained from pilot plant trials using the Lakeland Steel (Rotorua) continuous auger pyrolysis plant using feedstock at 15, 30, 45 and ~80% moisture contents. Economics were calculated based on estimated capital and operating costs of a large scale facility, revenue from selling char, savings from landfill diversion (including transportation and gate costs), energy savings by recycling syngas product and using waste heat for drying feedstock.
For DAF, 15% moisture content gave yields of 21% syngas, 27% char, and 52% oil (dry weight basis). 15% moisture content gave the best processing conditions based on handling properties and degree of autogenesis. The DAF case does not give a payback period due to low scale of operations.
For biosolids, 15% moisture content feedstock gave yields of 46% syngas, 31% char, and 21% oil (wet weight). Difficulties were found with plant blockages at 45% and 80% moisture contents. 15% moisture content gave the best processing conditions and the best economic performance with a payback time of 4.6 years for a facility that could process 11,000 tonnes per year.

year: 2012

title: Building script-based tacit knowledge in call centre trainees

authors: McQueen, Robert J.

subjects: tacit knowledge

abstract: An exploratory case study on a technical support call centre in China is presented, which investigates a new paradigm that script-based tacit knowledge for action is built in the brains of learners, rather than transferred. Twelve techniques used by the case study organization to build tacit knowledge scripts in the minds of the trainees are discussed. It was found that one type of script-based tacit knowledge execution can be represented by a set of steps in action-taking that include awareness, attention, diagnosis, action alternative analysis, action taking, and outcome evaluation. The case findings show that the notion of building, rather than transferring tacit knowledge is helpful in understanding the organizational processes used to bring new employees up to working skill levels, and suggest that similar processes and training methods for building tacit knowledge scripts can be used by other organizations to transform a new recruit to an experienced and valued employee.

text: Building script-based tacit knowledge in call centre trainees An exploratory case study on a technical support call centre in China is presented, which investigates a new paradigm that script-based tacit knowledge for action is built in the brains of learners, rather than transferred. Twelve techniques used by the case study organization to build tacit knowledge scripts in the minds of the trainees are discussed. It was found that one type of script-based tacit knowledge execution can be represented by a set of steps in action-taking that include awareness, attention, diagnosis, action alternative analysis, action taking, and outcome evaluation. The case findings show that the notion of building, rather than transferring tacit knowledge is helpful in understanding the organizational processes used to bring new employees up to working skill levels, and suggest that similar processes and training methods for building tacit knowledge scripts can be used by other organizations to transform a new recruit to an experienced and valued employee.

year: 2010

title: Traditional Knowledge (TK) Labels Transforming Data Infrastructure to Recognise Indigenous Provenance

authors: Hudson, Maui

subjects: Data

abstract: Associate Professor Maui Hudson, KatieLee Riddle and Dr Janette Hamilton-Pearce introduced the latest developments and applications of the Traditional Knowledge Labels and the Local Contexts Hub with examples of use by researchers in Aotearoa New Zealand.

text: Traditional Knowledge (TK) Labels Transforming Data Infrastructure to Recognise Indigenous Provenance Associate Professor Maui Hudson, KatieLee Riddle and Dr Janette Hamilton-Pearce introduced the latest developments and applications of the Traditional Knowledge Labels and the Local Contexts Hub with examples of use by researchers in Aotearoa New Zealand.

year: 2022-09-27