Corncob Biochar Research Articles

The efficacy and lipid degradation properties resulting from corncob biochar treatment for acrylamide reduction in reused palm oil

Acrylamide is a carcinogenic compound commonly found in deep fried food. Given the health adverse effects of acrylamide, innovative techniques that can reduce acrylamide formation during frying is desirable while maintaining oil quality. This study examined how used palm oil treated with corncob biochar changed the amount of acrylamide and the composition of lipids. The biochar was mixed with used oil (ratio 1:10 (w/w)) for 15 h and the chemical properties of the oil were determined. The properties of biochar treated oil were compared with fresh oil, which formed the control, and used oil prior to biochar treatment. The results of oxidation (PV, TBARs) were significantly lower when the used oil was treated before being fried again. The use of biochar did not alter the fatty acid profile of the oil. Acrylamide content in fried potatoes was reduced by half compared to 2nd used oil (2 mg/100g) and 2nd used oil treated with biochar (0.8 mg/100g). This preliminary study shows that biochar made from agricultural waste has the potential to be used as an oil recycling material for a more sustainable alternative approach. Moreover, the method is applicable to industrial contexts and the material is safe for the environment.

Pengaruh Pemberian Biochar Terhadap Perubahan Sifat Kimia Tanah Vertisol dan Pertumbuhan Kacang Hijau (Vigna radiata L.)

Vertisols are soils that have a high cation exchange capacity but tend to have a low organic matter content. Meanwhile, nutrients availability in vertisol tends to be low because these elements are bound by clay particles, so the nutrient availability is limited for plantsThe aim of this research is to investigate the influence of rice husk biochar and corn cob biochar application on the changes in chemical properties of Vertisol soil and the vegetative growth of mung bean (Vigna radiata L.). The study was conducted using a Randomized Complete Block Design (RCBD) with an experimental approach. There were 8 treatments repeated 6 times, resulting in a total of 48 experimental units. The rice husk biochar (P) treatments included the control without rice husk biochar (BSP0), rice husk biochar at a rate of 60 g/kg soil (150 tons/ha) + 2.5 kg soil (BSP1), rice husk biochar at a rate of 30 g/kg soil (75 tons/ha) + 2.5 kg soil (BSP2), and rice husk biochar at a rate of 15 g/kg soil (37.5 tons/ha) + 2.5 kg soil (BSP3). The corn cob biochar (J) treatments included the control without corn cob biochar (BTJ0), corn cob biochar at a rate of 60 g/kg soil (150 tons/ha) + 2.5 kg soil (BTJ1), corn cob biochar at a rate of 30 g/kg soil (75 tons/ha) + 2.5 kg soil (BTJ2), and corn cob biochar at a rate of 15 g/kg soil (37.5 tons/ha) + 2.5 kg soil (BTJ3). The research data were analyzed using Analysis of Variance (ANOVA) at a significance level of 5%. Significant differences between treatments were further analyzed using the Duncan's New Multiple Range Test (BNJ) at a significance level of 5%. The soil analysis was carried out at the Soil Physics and Soil Chemistry Laboratories, Faculty of Agriculture, Universitas Mataram. The results of the research showed that biochar application influenced the chemical properties of the soil (pH, Cation Exchange Capacity, Organic-C) and the growth of mung bean plants in Lombok's Vertisol soil. Biochar did not have a significant effect on the height of mung bean plants at 7 and 14 days after planting (DAP), but it had a significant effect at 21, 28, and 35 DAP. However, the application of biochar did not significantly affect the number of leaves and dry weight of mung bean plants.

Unveiling the Potential of Corn Cob Biochar: Analysis of Microstructure and Composition with Emphasis on Interaction with NO2.

In the context of sustainable solutions, this study examines the pyrolysis process applied to corn cobs, with the aim of producing biochar and assessing its effectiveness in combating air pollution. In particular, it examines the influence of different pyrolysis temperatures on biochar properties. The results reveal a temperature-dependent trend in biochar yield, which peaks at 400 °C, accompanied by changes in elemental composition indicating increased stability and extended shelf life. In addition, high pyrolysis temperatures, above 400 °C, produce biochars with enlarged surfaces and improved pore structures. Notably, the highest pyrolysis temperature explored in this study is 600 °C, which significantly influences the observed properties of biochars. This study also explores the potential of biochar as an NO2 adsorbent, as identified by chemical interactions revealed by X-ray photoelectron spectroscopy (XPS) analysis. This research presents a promising and sustainable approach to tackling air pollution using corn cob biochar, providing insight into optimized production methods and its potential application as an effective NO2 adsorbent to improve air quality.

Corn cob biochar for the removal of lead ions (II): simultaneous optimization of four response variables

Corn cob biochar for the removal of lead ions (II): simultaneous optimization of four response variables

EFEKTIVITAS APLIKASI JENIS PUPUK ORGANIK CAIR DAN BIOCHAR TERHADAP PRODUKSI TANAMAN SAWI PAKCOY (Brassica rapa L.)

As Indonesia's population increases, pak choy mustard greens (Brassica rapa L.) are increasingly popular with the general public. However, this increase in demand is not accompanied by an even increase in supply. The use of biochar and liquid organic fertilizer is considered to be able to overcome this problem in order to increase the production of pak choy mustard greens. The aim of this research was to determine the effect of using biochar and liquid organic fertilizer on the growth of pakcoy mustard greens. This research was carried out from March to May 2023 in German Village, Sugio, Lamongan. This research uses a Factorial Randomized group Design Method (RAKF) which involves two factors with three levels of each factor. Which consists of types of liquid organic fertilizer: cow biourine, rabbit biourine, Poc Nasa as well as biochar type factors: rice husk biochar, corn cob biochar, coconut shell biochar. Fisher's test (F test) was used to perform an analysis of variance on the data collected from these observations, with a significance level of 5% and 1%. The Least Significant Difference test was applied at the 5% significance level to further analyze the treatment that had a significant impact. In particular, the parameters of plant height and number of leaves at the age of 14 days after planting showed significant variations between the various biochar treatments, based on the results of the analysis of variance. Interactions between these factors were also recorded. Fresh weight per plant, wet weight per plot and wet weight per hectare, as well as plant height and number of leaves at 21, 28 and 35 days after planting. In particular, the use of treatments involving rabbit biourin and corncob biochar gave the best results in this investigation.

Use of Starch and Biochar-Based Essential Oil Formulations from Three Aromatic Plants as Antifungal Components to Improve Peanut (Arachis hypogaea L.) Seed Storage

Poor storage conditions of foodstuffs are responsible for their deterioration on many microorganism species with substantial quantitative and qualitative losses. During storage, formulating essential oil of some antifungal plants' based on cassava starch and corncob biochar efficacy was evaluated on fungi associated with peanut seeds (Arachis hypogaea L.). Two hundred peanut seeds were dispersed in plastic bottles; 5 g of essential oil formulation starch-based (3 and 7 µl/g) were sprinkled on the seeds. Biochar pieces were added to the seeds in the bottles for biochar-based essential oils. Laboratory conditions were used to store both treatment and non-treatment seeds for 70 days. Infection rates of fungal infections were estimated at 10, 20, 40, 60, and 70 days of storage. From the results obtained, five fungal genera were isolated from peanut seeds, including four species of Aspergillus, Cercospora sp, Fusarium sp, Phomopsis sp and Rhizopus stolonifer, with seed infection percentages ranging from 4 to 62%. The antifungal activity of starch-based formulations revealed that at a concentration of 3 µl/g, Cymbopogon citratus essential oil is the most effective antifungal agent, 13% infection for 70 days resulted storage of peanut seeds. After 70 days of storage, at a dose of 7 µl/g, C. sempervirens essential oil had the best antifungal efficacy with 23.50% of infected seeds for the biochar-based formulation. As a result of these findings, starch and biochar can be used to formulate essential oils for the conservation of peanut seeds. Moreover, Cymbopogon citratus essential oil formulated with starch is the most effective.

Effects of additive on formation and electron transfer capacity of humic substances derived from silkworm-excrement compost during composting

Amending biochar or MnO2 is a common strategy to regulate humification during manure composting. However, how these additives affect the formation, spectrum characteristics (UV–vis, FTIR, EEM) of humic substances (HSs) in silkworm-excrement (SE) compost and their electron transfer capacities (ETC) remains unclear. Thus, the SE composting pilot separately added with 10% corncob biochar (CB) (w/w) and 0.5% MnO2 (w/w) was run to investigate the effects. The results revealed that adding 10% CB slightly affected the HA/FA (humic acids/fulvic acids) ratios, UV–vis and FTIR spectra of the final SE-compost HSs and EEM components in the FA, but remarkably improved fulvic-like (C1)/quinone-like (C3) substances and reduced humic-like (C2)/protein-like substances (C4) in the HA. Meanwhile, 0.5% MnO2 had a noticeable positive effect on the aromatization of SE-compost FA and HA but only weak impact on SUVAs and EEM components in these HSs except C4 in the FA. Moreover, 10% CB obviously reduced EAC/EDC of FA and HA in the final SE compost by 31.1%/22.0% and 19.7%/24.0%, while MnO2 improved EDC of these HSs by 6.5%/9.1% (FA/HA). These results showed MnO2 can be used as a useful amendment to enhance the promotion effect of SE-compost HA in the soil remediation other than CB. Further investigation is suggested to focus on the effects of adding MnO2 on SE-compost HSs enhancing soil remediation and its effect on ETC derived from other manure compost.

Analysis of Application of Corn Cob Biochar As Planting Media on The Growth of Mini Elephant Grass (Pennisetum Purpureum Cv. Mott)

The use of corn cob agricultural waste as a material for making Biochar is an alternative to the abundant utilization of corn cob, where until now, corn cob waste has become waste piled up and burned in corn sheller refineries without being utilized. This study aims to evaluate the vegetative Growth of mini elephant grass given different doses of corn cob biochar. This research was conducted experimentally using the complete randomized design (CRD) method, five treatments, and four replications, namely treatment P0 = control; P1 = corn cob biochar 5% polybag-1; P2 = Biochar 10%; P3 = Biochar 15%; and P4 = Biochar 20%. Parameters observed were plant height, number of tillers, number of leaves, and fresh and dry weight. The results showed that the application of corn cob biochar had a good effect on the Growth of plant height, number of tillers, number of leaves, and fresh and dry weight. The best results were obtained by applying 10% corn cob biochar, which produced an average number of tillers 238% more than the control, the number of leaves 275% more than the control, and fresh weight 394% higher than the control treatment.

Corncob Biochar Activation by Phosphoric Acid and Hydrogen Peroxide for Enhancing Ammonium Adsorption

Corncob Biochar Activation by Phosphoric Acid and Hydrogen Peroxide for Enhancing Ammonium Adsorption

Reduction in phytotoxicity of a textile wastewater against Vigna radiata using Citrobacter sp. M41 in a bioaugmented packed bed column bioreactor

The current research was carried out to devise a biological strategy to remediate dyes and metal ions from textile wastewater. For this purpose, Citrobacter sp. M41 was isolated from a textile wastewater sample. This strain efficiently decolorized > 90 % of the added reactive black-5 (RB5) dye using yeast extract as a C source at 8.5 pH and 30 °C in mineral salt medium containing a mixture of metals (Pb2+, Ni2+ and Cd2+). Moreover, M41 showed > 90 % decolorization of RB5 beside > 80 % concurrent removal of hexavalent Chromium [Cr(VI)]. Furthermore, the granulated corncob and its biochar bioaugmented with M41 and filled within packed bed column based bioreactors efficiently (>90 %) removed the RB5 and Cr(VI) from a textile wastewater. The M41 bioaugmented corncob biochar resulted into a 60.8 %, 57.8 % and 68.7 % decrease in chemical oxygen demand (COD), electrical conductivity (EC) and total dissolved solids (TDS) of the wastewater, respectively. A phytotoxicity study conducted by using mung bean (Vigna radiata) as a test crop indicated that the treated synthetic wastewater was relatively less toxic as compared with the untreated wastewater. Therefore, it can be concluded that Citrobater sp. M41 is an important bio-resource for treatment of textile effluent polluted with azo dyes and Cr(VI).

Biochar derived from agricultural waste and its application as energy source in blast furnace

Is biochar obtained from agricultural residues an alternative to the coal used in blast furnaces - BF? This work provided a comparison between biomass and PCI coal, and evaluated the influence of pyrolysis temperature on the combustion indexes and physicochemical properties of biochars. Coconut-shell, corncob, and eucalyptus bark biomasses were pyrolyzed at different temperatures (300 °C–500 °C) to produce biochar. Samples of biomasses and biochars were characterized using proximate analysis, HHV, FTIR, XRD and SEM coupled with EDXA. Pyrolysis led to increased fixed carbon content and HHV in the biochar. However, the higher the temperature, the lower the mass yield. The combustion indexes results revealed that the raw biomasses do not meet the reference values. Coconut-shell and corncob biochars produced at 300 °C and 350 °C demonstrated combustion indexes similar to those of reference PCI coal. The results suggested that both the choice of biomass and the pyrolysis temperature had influence on the properties of biochar produced. Coconut-shell and corncob biochars, produced at relatively low temperatures, exhibited suitable combustion properties and could serve as partial substitutes of PCI coal in a BF. Eucalyptus bark biochar, due to its higher ash content, may be less suitable for these applications.

Unraveling the role of alkali metal in the biochar for enhancing the chemical looping ammonia generation efficiency

Chemical looping ammonia generation (CLAG), efficiently converting C-based material, N2 and H2O into NH3 and CO, is considered to be one of the promising NH3 production technologies. Using biochar as the C-based material is supposed to further improve the “green” level of NH3 but there is rare report about that. This paper was desired to fill this gap. Peanut shell biochar, lotus shell biochar and corncob biochar were used to study the chemical looping ammonia generation performances of the N-support. It was found that metals contained in the biochar significantly affected the nitridation process; alkali metals were simulative while alkaline-earth metals were inhibitory, which indicated that the corncob biochar exhibit the best nitriding properties. In addition, K, with the best positive effect for nitridation, was found to be with negligible negative effect for ammoniation. Furthermore, the carbon conversion efficiency and NH3 production could be still improved by 8.46 % and 9.23 % if the corncob biochar was modified with 2 wt% K (simulating 120 cycles of nitridation/ammoniation reaction). The obtained results indicated that the biochar is a promising carbon source for CLAG.

Effect of pyrolysis temperature on physicochemical properties and hexavalent chromium adsorption of the corncob biochars

Effect of pyrolysis temperature on physicochemical properties and hexavalent chromium adsorption of the corncob biochars

Pengaruh Biochar Terhadap Mobilitas Merkuri (Hg) Pada Percobaan Pencucian (Leaching) Tertutup

This study aims to determine the effect of biochar application on Hg mobility in a closed leaching experiment using gold processing tailings contaminated soil. The factorial experiment was set up using a Completely Randomized Design (RBD) which tested three types of biochar (rice husk biochar, coconut shell, and corncob biochar) and three doses of biochar (0.10 tons ha-1 and 15 tons ha-1). The PVC column containing a mixture of polluted soil and dibiochar was washed four times with deionized water for a total of 1090 ml of watering. The results showed that the application of biochar can reduce the mobility of mercury (Hg) in small scale gold processing tailings polluted soils. The dissolved Hg concentration in the leachate decreased with increasing dose of biochar application. Leachate from corn cob biochar (15 tons ha-1) treatment showed the lowest Hg concentration of 0.0012 ppm but was not significantly different from leachate from the soil column that was applied coconut shell and rice husk biochar. The concentration of Hg in the leachate for all biochar treatments ranged from 0.0012 - 0.0062 ppm, significantly different from the leachate concentration of the soil column without biochar, which was 1.62 ppm. This provides an indication that biochar can reduce the leaching rate, so that the concentration of Hg is not much leached into the soil. Therefore, biochar can be used as a soil enhancer in remediation of mercury (Hg) polluted soil so that it can slow down the mobility of mercury (Hg) so that it has a small impact on the environment.

Enhanced removal capacities and mechanisms of Mn/Fe-loaded biochar composites functionalized with chitosan Schiff-base or hydroxyl toward Pb(II) and Cd(II) from aqueous solutions

The efficient capture of heavy metal ions from actual wastewater is a global challenge. To enhance Pb(II) and Cd(II) removal, novel biochar composites (MF@CBC, MF-S@CBC and MF-OH@CBC) were successfully fabricated by loading magnetic Mn-Fe binary oxides and functionalizing chitosan Schiff-base or hydroxyl on biochar in the study. The maximum adsorption capacities of MF-OH@CBC and MF-S@CBC toward Pb(II)/Cd(II) were 196.69/187.29 mg/g and 161.61/153.69 mg/g (pH = 5.0, adsorbent dosage = 0.5 g/L), which were 2.09/3.05 and 1.54/2.33 times higher than corn cob biochar (CBC), respectively. The adsorption processes were conformed to Langmuir isothermal model and pseudo second order model. The numerous functional groups presented on MF-OH@CBC resulting from loading Mn-Fe nanoparticle and hydroxylation might be the main reason for dominating adsorption of Pb(II)/Cd(II) by complex interaction (contribution rate (CR) = 45.66%/43.12%). And also, the negative charge on MF-OH@CBC might be another reason for enhancing adsorption of Pb(II)/Cd(II) by electrostatic interaction (CR = 23.11%/22.45%). Besides, ion exchange (CR = 17.95%/19.33%) and physical adsorption (CR = 13.28%/15.10%) could also contributed to Pb(II)/Cd(II) removal. In addition, MF-OH@CBC displayed favorable recycling ability and its adsorption capacity retained over 80% after five cycles. It also exhibited anti-interfering ability, the adsorption capacity for Pb(II)/Cd(II) in actual sewage was 85.27%/80.47%, respectively. The results indicated that MF-OH@CBC possessed good potential for eliminating Pb(II) and Cd(II) from the complex aqueous environment.

Amelioration of Soil Acidity in Ferralsols of Central Uganda

Soil acidity is one of the major constraints limiting crop productivity in Central Uganda. Thus, the ideal soil pH for crop production ranges from 5.5 to 6.8, but in Central Uganda, crops are believed to be cultivated in soils with pH below these ranges. Given the adverse effects of soil acidity to agricultural production, appropriate measures such as the use of lime could be an option to improve the productive capacity. Henceforward, soils were sampled from farmers’ fields in Mpigi, Mubende and Wakiso Districts representing Central Uganda to evaluate rates of CaCO3 and corncob biochar in a greenhouse incubation study. Afterwards, 2 kg of soil was weighed, placed in a plastic container and thoroughly mixed with 0, 1, 3 and 5 g equivalent to 0, 1, 3 and 5 tons/ha CaCO3 and corncob biochar. Soils were arranged in a Complete Randomized Design (CRD) and moistened with 500 ml of water to bring it to about field capacity and pH determination done for a period of three (3) months until equilibration. The analysis of variance (ANOVA) showed significant effect (P<0.001) on soil pH when CaCO3 and corncob biochar were applied with the three districts recording a near neutral pH of 6.7.
 After pH equilibration in the greenhouse, rates of CaCO3 and corncob biochar that raised the soil pH in each medium were used to calculate the lime rates i.e., 0, 120, 360 and 600 g applied in the fields. In a Complete Randomized Design (CRD) consisting of four replications, soybean varieties were applied as the main plots while rates of CaCO3 and corncob biochar were applied as the sub plots. The analysis of variance (ANOVA) showed that CaCO3 had significant effect (p<0.001) on soil pH with Mpigi recording the highest soil pH (6.7) followed by Mubende (pH 6.6). Rates of CaCO3 and corncob biochar also showed significant effect (p<0.001) on soybean grain yield compared to 0 g CaCO3 and corncob biochar. Application of 600 g of corncob biochar showed significant effect (p<0.001) on soil pH in the different study locations. Besides, increased in CaCO3 rate to 600 g recorded the highest (7137.5 kg ha-1) soybean grain yield in Wakiso District while 600 g of corncob biochar recorded the highest (5637.5 kg ha-1) soybean grain yield in Mpigi District thus signifying the potential effect of CaCO3 and corncob biochar in Acid Ferralsols.

Response on growth and production of cayenne pepper (Capsicum frutescens L.) due to application of bio-slurry and biochar

This study aims to determine the best concentration of bioslurry and type of biochar for cayenne pepper growth and production. The research was conducted from March to June 2022 located in Sompe Village, Sabbangparu District, Wajo Regency. The research was carried out in the form of 2-factor factorial experiment using a randomized block design. Four concentration of bio-slurry, used as the first factor, were 0, 125, 250, and 250 cc per plot. The second factor was types of biochar consisted of control, rice husk biochar, corn cob biochar, and coconut shell biochar with a dosage of 4.4 kg per plot. Research results show no significant interaction occurred between the bioslurry and biochar treatments that affect the growth and production of cayenne pepper. Use of coconut shell biochar treatment resulted in the highest plant (36.31 cm) while application of rice husk biochar resulted in the highest number of fruits per plant (30.27), weight per fruit (4 g), fruit weight per plant (34.88 g), and fruit weight per plot (139.54 g). Treatment of rice husk biochar is the most optimal treatment in upgrading the production of cayenne pepper plant.

Effects of Biochar and Apatite on Chemical Forms of Lead and Zinc in Multi-Metal-Contaminated Soil after Incubation: A Comparison of Peanut Shell and Corn Cob Biochar

Heavy metal pollution in soils caused by mining activities is a severe issue worldwide. It is necessary to find a suitable approach to mitigate heavy metal-contaminated soil. Yet little is known about how soil amendments affect the chemical forms of heavy metals. Biochar produced from peanut shells (PSB300) and corn cob (CCB300) at 300 °C, and apatite (AP) were applied at various ratios to investigate their ability to adsorb lead (Pb) and zinc (Zn) in contaminated soil. The Pb and Zn’s chemical fractions were analyzed utilizing Tessier’s sequential extraction procedure and quantified using inductively coupled plasma mass spectroscopy. The one-month amendment incubation of biochar and AP could significantly diminish Pb and Zn’s exchangeable fractions, and CCB300 showed a slightly better effect on declining the exchangeable fractions of Pb and Zn than PSB300, which might be attributed to the higher values of OC and EC of CCB300 than those of PSB300. Moreover, the amendments could also transform the exchangeable fractions of Pb and Zn into stable fractions, resulting in immobility in natural conditions. Thus, PSB300 and CCB300 and the mixture of biochar/apatite could be hopeful amendments for immobilizing heavy metals in heavy metal multi-metal-contaminated field soil.

Impact of Biochar Application on Chemical and Microbial Properties of Soil

Biochar is a carbonaceous solid compound formed by high-temperature of organic waste. The quality of biochar produced is determined by pyrolysis conditions and the type of raw materials. This study focused on the evaluation of the impact of biochar application on soil chemical and microbial properties. Four types of biochar from corn cobs, sawdust, mud press, and rice hull were produced and their chemical composition (pH, Organic Matter, Organic Carbon, Total Nitrogen, Carbon: Nitrogen Ratio, Available Phosphorus, and Exchangeable Potassium) was analyzed. A pot experiment with five treatments [T1 - Pure Soil; T2 – Soil + corn cob biochar; T3 – soil + sawdust biochar; T4 – soil + mud press biochar; T5 – soil + rice hull biochar] replicated three times was arranged in a completely randomized design (CRD). An equal amount of soil was placed in pots and mixed with biochar at a ratio of fifty grams (50g) per one-thousand grams (1000g) of soil. A total of fifteen experimental pots were used in the study where each pot contains a soil-biochar mixture of one-thousand five-hundred grams (1500g). Pearson’s correlation coefficients were used to determine how the soils applied with biochar are affected after sixty days of incubation and determine how biochar sources were related. All four biochar from rice hull, corn cobs, mud press, and sawdust are all alkaline and contain comparable amounts of organic matter, organic carbon, pH, soil nitrogen, available phosphorus, and exchangeable potassium. The result of the study showed that biochar application significantly improved soil pH, soil organic matter content, soil organic carbon, and soil nitrogen content. Soils amended with biochar showed comparable amounts of available phosphorus and exchangeable potassium. The application of biochar in soils therefore can be considered a potential solution to enhance soil fertility for sustainable crop production.

UNLOCKING THE POTENTIAL OF AGRICULTURE WASTE AS A SOIL AMENDMENT ON GROWTH PERFORMANCE OF SWEET CORN (Zea Mays.)

The decline in soil fertility of agricultural land and the abundance of agricultural wastes is a major problem in the environment. To overcome these problems, agricultural wastes have the potential to serve as a beneficial product that provides sustainable agriculture. The use of agricultural wastes as soil amendments is a sustainable practice in improving soil quality and plant productivity. Therefore, this study was carried out to evaluate the potential of agricultural wastes and agriculture wastes-derived biochars as soil amendments toward sweet corn (Zea Mays.) growth performance. The study was conducted in the greenhouse for 75 days. A randomized complete block design with four treatments (oil palm empty fruit bunch (EFB), EFB biochar, decanter cake, corn cob and corn cob biochar) in combination with mineral soil and four replication was used during the study. Plant height, stem diameter, and number of leaves were assessed for each treatment. Results indicate that corn cob biochar significantly increased the sweet corn height and plant diameter by respectively 11.0% and 25.0% as compared to the control. An increase in the stem diameter by 10.0% due to the application of EFB was observed at 45 days compared to the other treatments. In conclusion, the agricultural waste which is corn cob biochar were observed to have the potential in enhancing the sweet corn (Zea Mays.) growth.