Keyword: sequestration

2 results found.

Research Article
Sequestration of Heavy Metals From Coal Wash Water Using Biochar From Pyrolysis of Morula Shells
European Journal of Sustainable Development Research, 2022, 6(1), em0173,
ABSTRACT: Biomass is a source of low-cost adsorbents used in the removal of contaminants. In this study, shells from an indigenous tree in Southern Africa called Morula were pyrolyzed to produce biochar that was used to sequester heavy metals from coal wash water. The produced biochar was activated using hydrochloric acid (HCl) and parameters such as the cation exchange capacity (CEC), point of zero charge (pHzc), elemental composition, mineral composition, proximate analysis and surface functional groups were determined. Batch adsorption experiments were carried out at 150 rpm for 60 min and 25 ºC at different metal ion concentrations and adsorbent dosages. The metal ions of interest were Zn, Ni and Fe and it was found that Fe recorded higher removals for both raw and activated biochar. Generally higher removals were noticed for both raw and activated at lower dosages (0.2 – 1.0 g/100 mL) and lower metal ion concentration (between 40 and 60 ppm) while lower removals were found at higher dosages (1 – 5 g/100 mL) and higher metal ion concentrations (between 400 – 600 ppm).
Research Article
Wasteland Utilization for B. balcooa Cultivation: Socio-economic and Environmental Impacts through Bamboo-based Product Development
European Journal of Sustainable Development Research, 2019, 3(4), em0103,
ABSTRACT: Declining fossil fuel and increasing CO2 emissions from non-renewable fuel leading us to climate change which signifies to reduce fossil fuel dependency and promotes bioenergy as renewable. To address such issue Abellon Clean Energy has developed captive farming of B. balcooa for environment friendly bio-energy feedstock cultivation in; 1112, 2223, 2964 and 6175 plants/hectare densities to understand cost of cultivation and its subsequent use in cottage industry, energy substitute and high value products. Farmers’ field trials were also performed as 1112 plants/hectare at three districts of Gujarat. The optimum plantation density was observed to be 1112 plants/hectare at captive and farmers’ field having approximately 57.70 MT/hectare biomass yield with 32-39 USD/MT cost of production. If 5% of waste land of India cultivates B. balcooa, with 50% biomass yield, 67.51 million metric tonne (mMT)/year bamboo biomass can be produced. Bamboos generates worth of 9788 million USD or 7696 million USD yearly from handicraft and construction respectively. Bamboo grown at marginal ecologies can fetch around 12.83 mMT/year from cottage industrial products worth of 16616 million USD reducing bamboo import. Waste from cottage industries can produce annually bio-energy pellets worth of 13987 million USD which could replace 63.18 mMT of coal or 21.60 mMT of LPG. Optionally 7560 million liters/year of bioethanol can be produced out of waste generated from incense stick processing worth 5670 million USD. Further 30% of bamboo from marginal land cultivation can produce 20.25 mMT/year of activated charcoal worth of 34425 million USD. Indirect employment of 8.66 million people is accounted for incense stick, pellet production, logistics, marketing, etc. B. balcooa has potential for carbon sequestration through marginal land development impacting India’s social, economic and environment conditions that also improves soil quality.