Cow farm wastes: A bioresource for sustainable development

Saxena, Diksha; Sandhwar, Vishal Kumar

doi:10.1016/b978-0-323-91149-8.00017-x

Cited by 1 publication

(1 citation statement)

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“…Cow dung (CD) is a bioresource that is cheaply and abundantly available. It is used in many developing countries as a source of energy, apart from being tapped for its suitability as a cleansing agent with antimicrobial properties, and as a biomaterial to enhance soil fertility [13]. The present investigation was undertaken to exploit abundantly available rice straw and cow dung by blending and subjecting these to hydrothermal liquefaction by establishing suitable process conditions of temperature, solvent to biomass ratio, time and pressure for the simultaneous recovery of bio-oil and biochar; this process complements and supplements the pros and cons of both agricultural and animal waste.…”

Section: Introductionmentioning

confidence: 99%

Study on Process Parameters in Hydrothermal Liquefaction of Rice Straw and Cow Dung: Product Distribution and Application of Biochar in Wastewater Treatment

Seikh,

Alharbi,

Alnaser

et al. 2023

Processes

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In this study, rice straw (RS) and cow dung (CD) waste were hydrothermally processed for the recovery of bio-oil and biochar. The hydrothermal experiments were performed in a 5 L capacity reactor under the following process conditions: temperature (240–340 °C), solvent to biomass ratios of 1:1, 1:2, 2:1, 1:3 and 3:1, a time of 1 h and a pressure of 15 bar. The HTL products were characterized via FTIR, SEM and GC–MS (gas chromatography mass spectrometry). It was seen that the maximum bio-oil yield was 32.5 wt% and the biochar yield was 18.5 wt% for the 2:1 RS:CD mixture at a temperature of 320 °C. The bio-oil contained hexadecane, heptadecane, octadecane and other hydrocarbons, and their presence was confirmed by GC–MS. The biochar was analyzed, and it was used in wastewater treatment to remove the colorants. The biochar also showed some promising results in the colorants removal study, with an efficiency of more than 76%.

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Section: Introductionmentioning

confidence: 99%