Digesters break down samples into their basic constituents for analysis.  While they function in a similar fashion to biological digestion, the constituents are not used for food, rather for study.  Sample digestion is often involved in hunts for trace metals, to prepare for such analyses as atomic absorption or inductively coupled plasma spectroscopy.  This classification of devices includes those used for laboratory research, sample testing, and process study.  Large-scale...
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Q & A on Digesters

We asked our users for their input on Digesters. Here are the results of 53 users familiar with Digesters.

Who Took Our Poll? | Design Trends | Applications and Use | Features | Buying Advice

Who Took Our Poll?Top

Design TrendsTop

Q:
What new technologies are influencing digester design?
6 answers
Answers:
Substrates input machinery; mixing technology; silo materials; handling of different kind of substrates; drying machinery;
~Engineering, Consulting, Lelystad, Netherlands
Biogas mixing system jet mix system digesters combined with gasholder on the top
~Danila S, Engineering Consultant, Bucharest, Romania
Soil/Compost Respirometers
~Kent K, Manufacturer, Springdale, AR
Biodigester
~Djati Soepangkat, Engineering Consultant, Jakarta, Indonesia
Electricity
~Dr John Ikechukwu Eze, Research & Development, Nsukka, Nigeria
ICP-MS
~Other, Saskatoon, Canada

Q:
From your perspective, which companies are creating the most innovative digesters?
7 answers
Answers:
SCP Science
~Other, Saskatoon, Canada
Cargill harapan lestari
~Djati Soepangkat, Engineering Consultant, Jakarta, Indonesia
Energy Research Center, Nsukka, Nigeria
~Dr John Ikechukwu Eze, Research & Development, Nsukka, Nigeria
Eisenbau heilbron muche sterling
~Danila S, Engineering Consultant, Bucharest, Romania
BEKON, LOOCK, BIOFERM
~Jordi M, Research & Development, Barcelona, Spain
Small companies
~Purchasing, LeRoy, Canada
I am
~Engineering, Consulting, Lelystad, Netherlands

Applications and UseTop

Q:
What are some of the applications you have used a digester for?
15 answers
Answers:
Systems are used to monitor biogas production in bench scale studies in order to better design and understand the impact of variable conditions and food sources for maximizing biogas.
~Kent K, Manufacturer, Springdale, AR
Digesting plastics, motor oil, animal and plant tissue, foods and grains, ceramics, etc...
~Marketing/Sales, Matthews, NC
Observed them being used to produce gas from waste grease and farm refuse.
~Purchasing, Kinsman, OH
Biomass; bio-wastes; Manure; Kitchen wastes; energy crops.
~Engineering, Consulting, Lelystad, Netherlands
Clean Development Mechanism from Palm Oil Mill Effluent
~Djati Soepangkat, Engineering Consultant, Jakarta, Indonesia
At Masterfoods, to cook sealed tins of food product.
~Engineering, Consulting, Morisset, Australia
Soil, vegetation and animal tissue digestion
~Other, Saskatoon, Canada
Manure, crop residues, and waste to biogas
~Dresden, Canada
Waster water treatment + energy production.
~Ernst Murnleitner, Design Engineer, Landshut, Germany
Digesters for the municipal wwtp
~Danila S, Engineering Consultant, Bucharest, Romania
Process hog manure and deads.
~Purchasing, LeRoy, Canada
Solvothermal reactions
~Faculty/Staff, Padova, Italy
Food processing waste
~Engineering, Design, Hastings, New Zealand
Organics from MSW
~Jordi M, Research & Development, Barcelona, Spain
For lightning
~Dr John Ikechukwu Eze, Research & Development, Nsukka, Nigeria

Q:
Please share with us any “non-standard” applications that a digester has been used for.
4 answers
Answers:
How to use or efficiency of flare (methane capture)
~Djati Soepangkat, Engineering Consultant, Jakarta, Indonesia
Dirty organics from MSW
~Jordi M, Research & Development, Barcelona, Spain
Storage
~Dean V, Marketing/Sales, East Chicago, IN
Every thing is custom made; non-standard
~Engineering, Consulting, Lelystad, Netherlands

Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of a digester?
6 answers
Answers:
Poor ventilation and burnoff causing explosion.
~Dean V, Marketing/Sales, East Chicago, IN
Lighting a match near the digester.
~Dr John Ikechukwu Eze, Research & Development, Nsukka, Nigeria
Yes, a Parr digester (containing water organic and inorganic solutions) was heated in a muffle furnace without a temperature control, the temperature reached about 700 °C, causing the explosion of the digester and the partial destruction of the furnace.
~Faculty/Staff, Padova, Italy
Yes, in Romania, during maintenance, without complete emptying.
~Danila S, Engineering Consultant, Bucharest, Romania
Too much fed led to acidification.
~Ernst Murnleitner, Design Engineer, Landshut, Germany
A lot
~Jordi M, Research & Development, Barcelona, Spain

FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
8 answers
Answers:
Inline measurement of substrate composition (i.e. acetic acid, propionic acid).
~Ernst Murnleitner, Design Engineer, Landshut, Germany
Avoiding foam, non clogging pipes, good insulation, easy maintenance.
~Danila S, Engineering Consultant, Bucharest, Romania
Input substrate machinery; Measuring and analysing products.
~Engineering, Consulting, Lelystad, Netherlands
More automation, easier to assemble vessels.
~Other, Saskatoon, Canada
Provide flare system to take CDM certificate
~Djati Soepangkat, Engineering Consultant, Jakarta, Indonesia
Lower prices, higher volume.
~Faculty/Staff, Padova, Italy
Easy access for cleaning
~Dean V, Marketing/Sales, East Chicago, IN
Tunnel ones
~Jordi M, Research & Development, Barcelona, Spain

Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of a digester?
4 answers
Answers:
Planners of biogas digester must ensure that there are enough sub substrates.
~Dr John Ikechukwu Eze, Research & Development, Nsukka, Nigeria
Do not feed too much. Measure the hydrogen content of the gas.
~Ernst Murnleitner, Design Engineer, Landshut, Germany
Good ATV calculation of necessary volume.
~Danila S, Engineering Consultant, Bucharest, Romania
Look at previous experiences, use the adequate ones.
~Jordi M, Research & Development, Barcelona, Spain

Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using digesters?
3 answers
Answers:
It is eco-friendly.
~Dr John Ikechukwu Eze, Research & Development, Nsukka, Nigeria
To be easy visitable, easy to empty.
~Danila S, Engineering Consultant, Bucharest, Romania
Look at the previous experiences.
~Jordi M, Research & Development, Barcelona, Spain


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