Potassium struvite (slow release fertilizer) and activated carbon production: Resource recovery from vinasse and grape marc organic waste using thermal processing

Activated carbon can be obtained in a variety of ways. The most promising in terms of resource conservation and economic benefits is the method of producing activated carbon from organic waste. The production of activated carbon by this method is based on the process of pyrogenetic decomposition of pre-crushed and dried waste. As a result of thermochemical processing, activated carbon and pyrolysis gas are formed. Conductive waste pyrolysis is a high-temperature process that runs without oxygen. The temperature regimes of the pyrolysis process are described by the differential heat transfer equation. The calculation of the specific masses of the waste, coal and steam-gas mixture formed during the decomposition is carried out according to the differential equations of mass transfer by complicated ongoing chemical reactions. The hardware design of the pyrolysis process is a set of complex design and technological solutions. When developing equipment designed for the pyrolysis of crushed waste, it is necessary to carry out calculations related to the optimization of the hardware design and operating parameters of the process of thermal decomposition of waste particles, which make it possible to obtain a high-quality product. A pyrolysis zone of crushed waste has been developed for an energy- and resource-saving continuously operating unit for the production of activated carbon. Heating of waste to a temperature of 450-550 ° C is carried out by non-condensing combustible gases obtained during the separation of the steam-gas mixture. Waste flue gases enter a recuperative heat exchanger, and then serve as a heat carrier for drying a new batch of waste. The paper describes a method for calculating the pyrolysis zone in an activated carbon production unit. A mathematical model of the pyrolysis process is presented, by which it is possible to determine the optimal height of the layer of waste particles and the specific mass of the formed coal and gases during the decomposition of organic waste. An algorithm for calculating the pyrolysis zone has been developed. The following characteristics are shown: the dependence of the heating temperature of the layer of wood particles in the pyrolysis chamber on the layer thickness and the kinetic dependence of the specific mass of the solid residue of wood particles during pyrolysis. The calculation of the coal pyrolysis zone for the activated carbon production unit is presented.

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The utilization of activated carbon as micronutrients carrier in slow release fertilizer formulation

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/359/1/012009 ◽

2019 ◽

Vol 359 ◽

pp. 012009

Author(s):

D. A. Prastiwi ◽

B Sumawinata ◽

Iskandar ◽

G Pari

Keyword(s):

Activated Carbon ◽

Slow Release ◽

Slow Release Fertilizer

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Low-cost activated carbon production from organic waste and its utilization for wastewater treatment

Applied Water Science ◽

10.1007/s13201-020-1145-z ◽

2020 ◽

Vol 10 (2) ◽

Cited By ~ 2

Author(s):

Sudheer Kumar Shukla ◽

Noof Rashid Said Al Mushaiqri ◽

Hajar Mohammed Al Subhi ◽

Keunje Yoo ◽

Hafez Al Sadeq

Keyword(s):

Wastewater Treatment ◽

Activated Carbon ◽

Organic Waste ◽

Low Cost ◽

Carbon Production

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MODELING THE PROCESS OF GRINDING AND TRANSPORTING ORGANIC WASTE IN THE INSTALLATION DESIGNED FOR ACTIVATED CARBON PRODUCTION

Systems Methods Technologies ◽

10.18324/2077-5415-2021-2-152-157 ◽

2021 ◽

pp. 152-157

Author(s):

R.G. SAFIN ◽

◽

R.R. ZIATDINOV ◽

V.G. SOTNIKOV ◽

D.G. RYABUSHKIN ◽

...

Keyword(s):

Activated Carbon ◽

Organic Waste ◽

Carbon Production

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SLOW-RELEASE FERTILIZER FROM A ROCK CONTAINING GLAUCONITE BY THERMAL PROCESSING WITH ADDITIVES

Estudos (Inter) Multidisciplinares nas Engenharias 2 ◽

10.22533/at.ed.01719091017 ◽

2019 ◽

pp. 179-189

Author(s):

Antonio Clareti Pereira ◽

Emily Mayer de Andrade Becheleni ◽

Marta Ribeiro dos Santos Gomes ◽

Sônia Denise Ferreira Rocha

Keyword(s):

Thermal Processing ◽

Slow Release ◽

Slow Release Fertilizer

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Characteristics of Corn Cobs Waste Activated Carbon for Slow Release Micro Fertilizer Carrier

Sains Tanah - Journal of Soil Science and Agroclimatology ◽

10.20961/stjssa.v16i2.25480 ◽

2019 ◽

Vol 16 (2) ◽

pp. 147

Author(s):

Priyadi Priyadi ◽

Windu Mangiring

Keyword(s):

Activated Carbon ◽

Surface Area ◽

Pore Volume ◽

Slow Release ◽

Nutrient Content ◽

Characteristic Analysis ◽

Activation Temperature ◽

Solubility Test ◽

Corn Cobs ◽

Slow Release Fertilizer

The problem of Fertilization, especially micro fertilizers, is toxication due to the excessive application. Using the concept of slow release fertilizer is a very possible solution to overcome the problem. The objectives of this study are 1) to characterize corn cobs activated carbon for slow release micro fertilizer carrier, 2) to produce and to test of slow release micro fertilizer.The research was carried out by converting corn cobs into activated carbon with an activation temperature of 600 ˚C and water vapor for 90 minutes. Production of slow release fertilizer was carried out by soaking activated carbon in a solution of CuSO4, FeSO4 and ZnSO4 1N for 24 hours. The results of micro fertilizer were then characterized, then the solubility test was carried out. The results of the characteristic analysis showed that some parameters that could be used as fertilizer carriers include, iodine adsorption 404.21 mg g-1, adsorption of methylene blue 16.88 mg g-1, the pore volume of 0.19 cc mg-1 and surface area of 315.77 m2 g-1. While, based on the results of micronutrient solubility test the highest nutrient content that can be absorbed by activated carbon (AA) is found in Cu, followed by Zn and Fe. It relates to the characteristics possessed by activated carbon namely specific surface area, pore volume, and nutrient diameter size.

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