Waste to watt: Anaerobic digestion of wastewater irrigated biomass for energy and fertiliser production

被引：37

作者：

Shilpi, Sonia ^{[1
,2
]}

Lamb, Dane ^{[1
,2
]}

Bolan, Nanthi ^{[1
,2
]}

Seshadri, Balaji ^{[1
,2
]}

Choppala, Girish ^{[3
]}

Naidu, Ravi ^{[1
,2
]}

机构：

[1] Univ Newcastle, GCER, Callaghan, NSW 2308, Australia

[2] CRC CARE, POB 18, Callaghan, NSW 2308, Australia

[3] Southern Cross Univ, Southern Cross GeoSci, POB 157, Lismore, NSW 2480, Australia

来源：

JOURNAL OF ENVIRONMENTAL MANAGEMENT | 2019年 / 239卷

关键词：

Wastewater irrigation; Energy crop; Biochemical methane potential; Biomass; Digestate; ARUNDO-DONAX L; GIANT REED; BIOGAS PRODUCTION; ASSESSING AMENDMENT; METHANE PRODUCTION; CROPS; YIELD; MAIZE; LAND; MANAGEMENT;

D O I：

10.1016/j.jenvman.2019.02.122

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study aimed to investigate the potential of energy crops for biomethane production by examining the influence of abattoir and municipal wastewater irrigation on biomass production and the Biochemical Methane Potential (BMP). The experiments covered seven energy crops including sugar beet, alfalfa, maize, giant reed, napier grass, sunflower and canola. The biomass was harvested at three months of planting and BMP of each energy crops was assessed using anaerobic digestion. Giant reed yielded the highest biomass (22.3 t ha(-1)) from A800 treatment compared to the other species. The best performance for IMP (793.56 Nml CH4 g VS-1) was recorded for maize biomass irrigated with abattoir wastewater which is equivalent to gross energy yield 1041 GJ ha(-1) yr(-1) or electricity yield 284.8 MW h ha(-1) yr(-1). The digestate samples collected after anaerobic digestion of biomass from plants were analysed for their nutrient value. Nutrient content of digestates varied between energy crops, waste water sources and irrigation levels. The highest nitrate content was measured for giant reed (A800) and phosphate and sulphate contents for sugar beet leaf (A800). The results indicated that wastewater sources can be used to grow energy crops, thereby producing biomethane for energy and digestate for plant nutrition through anaerobic digestion process.

引用

页码：73 / 83

页数：11

共 44 条

[1] Methane production through anaerobic digestion of various energy crops grown in sustainable crop rotations [J].