Biochemical Methane Potential of Agricultural Byproduct in Greenhouse Vegetable Crops

Abstract

Number of crop residues generated at large amount in agriculture can be utilized as substrate in methane production by anaerobic digestion. Greenhouse vegetable crop cultivation that adopting intensive agricultural system require the heating energy during winter season, meanwhile produce waste biomass source for the methane production. The purpose of this study was to investigate the methane production potential of greenhouse vegetable crop residues and to estimate material and energy yield in greenhouse system. Cucumber, tomato, and paprika as greenhouse vegetable crop were used in this study. Fallen fruit, leaf, and stem residues were collected at harvesting period from the farmhouses (Anseong, Gyeonggi, Korea) adopting an intensive greenhouse cultivation system. Also the amount of fallen vegetables and plant residues, and planting density of each vegetable crop were investigated. Chemical properties of vegetable waste biomass were determined, and theoretical methane potentials were calculated using Buswell's formula from the element analysis data. Also, BMP (Biochemical methane potential) assay was carried out for each vegetable waste biomass in mesophilic temperature (38℃). Theoretical methane potential (B th ) and Ultimate methane potential (B u ) off stem, leaf, and fallen fruit in vegetable residues showed the range of 0.352∼0.485 Nm ) of crop residue may be highly influenced by biomass yield which is mainly affected by planting density.

Enhancing energy recovery from aquaculture residual materials: a focus on anaerobic digestion of African catfish (Clarias gariepinus) sediment sludge

“…Methane yield from whole paprika plants was reportedly lower at 121 L(N) CH 4 /kg VS (Li et al, 2018). However, anaerobic digestion of pure fruit residues proved to be more productive with methane yields of 210, 348 and 354 L(N) CH 4 /kg VS for tomato, cucumber, and paprika fruit leftovers, respectively (Shin et al, 2011). The same authors reported 268 L (N) CH 4 /kg VS from pure tomato leaf material, contrasting with the 154 L (N) CH 4 /kg VS in the present experiment.…”

Analysis of the Relationship between Sweet Pepper Stem Growth and Labor Load

“…시 설원예 작물의 생산비에 대한 인건비의 비중은 네덜란드가 29%, 이스라엘이 25%로 인건비 비중의 감소를 위해서는 작물 생 산과정에 필요한 작업 효율을 높이는 것이 매우 중요하다 (Elkoby et al, 2014). 우리나라의 시설과채류 생산과정에 투여되는 노동시간은 수경재배시스템 도입, 공정육묘 사용, 시설자동화 등으로 인하여 매년 점진적으로 감소되고 있으며, 재배기간의 연장과 수확량 증가 등으로 작업단계별 노동시간 중 작물의 유인, 순지르기, 수확에 투여되는 노동시간은 증가하였다 (Hwang et al, 2011;Kim et al, 2020). 시설원예 작물의 근로시간은 단위면적당 재식주수, 줄기 밀도, 품종의 유전적 형질, 작물의 생 육속도, 착과 부하에 영향을 받는다 (Heuvelink, 1997;Marcelis et al, 2004;Thakur et al, 2018) 다(Manzano-Agugliaro and Garcia-Cruz, 2009;Hwang et al, 2011;Elkoby et al, 2014;RDA, 2019).…”

“…우리나라의 시설과채류 생산과정에 투여되는 노동시간은 수경재배시스템 도입, 공정육묘 사용, 시설자동화 등으로 인하여 매년 점진적으로 감소되고 있으며, 재배기간의 연장과 수확량 증가 등으로 작업단계별 노동시간 중 작물의 유인, 순지르기, 수확에 투여되는 노동시간은 증가하였다 (Hwang et al, 2011;Kim et al, 2020). 시설원예 작물의 근로시간은 단위면적당 재식주수, 줄기 밀도, 품종의 유전적 형질, 작물의 생 육속도, 착과 부하에 영향을 받는다 (Heuvelink, 1997;Marcelis et al, 2004;Thakur et al, 2018) 다(Manzano-Agugliaro and Garcia-Cruz, 2009;Hwang et al, 2011;Elkoby et al, 2014;RDA, 2019). 작물의 유인작업과 순지르기 작업은 작물의 줄기 신장율에 의존하며, 과실의 수확량은 착과량과 착과된 과실의 생장속도에 의존한다 (Heuvelink, 1997;Marcelis et al, 2004;Manzano-Agugliaro and Garcia-Cruz, 2009;Thakur et al, 2018).…”