Copyrolysis of food waste and rice husk to biochar to create a sustainable resource for soil amendment: A pilot-scale case study in Jinhua, China

被引：14

作者：

Bian, Rongjun ^{[1
,2
]}

Shi, Weixi ^{[1
]}

Luo, Jingjing ^{[1
]}

Li, Wenjian ^{[1
,3
]}

Wang, Ying ^{[1
,2
]}

Joseph, Stephen ^{[1
,4
]}

Gould, Helen ^{[1
,4
]}

Zheng, Jufeng ^{[1
,2
]}

Zhang, Xuhui ^{[1
,2
]}

Liu, Xiaoyu ^{[1
,2
]}

Wang, Yan ^{[1
,2
]}

Liu, Xingmei ^{[5
,6
]}

Shan, Shengdao ^{[3
,5
]}

Li, Lianqing ^{[1
,2
]}

Pan, Genxing ^{[1
,2
,3
,5
]}

机构：

[1] Nanjing Agr Univ, Inst Resources Ecosyst & Environm Agr, 1 Weigang, Nanjing 210095, Peoples R China

[2] Nanjing Agr Univ, Jiangsu Collaborat Innovat Ctr Solid Organ Waste R, 1 Weigang, Nanjing 210095, Peoples R China

[3] Jinhua Biomass Technol Inst, Jinhua 321000, Zhejiang, Peoples R China

[4] Univ NSW, Sch Mat Sci & Engn, Kensington, NSW 2052, Australia

[5] Zhejiang Univ Sci & Technol, Key Lab Recycling & Ecotreatment Waste Biomass Zhe, Hangzhou 310023, Peoples R China

[6] Zhejiang Univ, Inst Soil Water Resources & Environm, Coll Environm & Nat Resources, 866 Yuhangtang Rd, Hangzhou 310058, Peoples R China

来源：

JOURNAL OF CLEANER PRODUCTION | 2022年 / 347卷

基金：

中国国家自然科学基金;

关键词：

Food waste; Copyrolysis; Biochar; Fertilizer; Safe recycling; HEAVY-METALS; PYROLYSIS; BIOMASS; EMISSION; IMPACT; SITE; CU;

D O I：

10.1016/j.jclepro.2022.131269

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Worldwide, massive amounts of food waste have been generated at increasingly accelerated rates, posing potentially great risks to the environment. Shifting traditional waste treatment to a sustainable bioeconomy thus challenges food chain management worldwide. In this study, food waste was copyrolyzed with rice husk to produce biochar with a pilot-scale industrialized system. The efficiency of the material conversion and the properties and functions of the produced biochars as well as the potential environmental impacts of pyrolysis were evaluated using in situ measurements, physico-chemical characterization and in vitro (pot) experiments with biochar. The results showed that the emissions of potential toxic compounds and metals from the pyrolysis system were within the guideline limits under the legislation of China or the EU commission. On average, biochar yielded approximately 20% of feedstock and contained a total organic carbon content of 433 g kg(-1). In the pot experiment, Chinese cabbage yield and quality were significantly improved, and the plant uptake of heavy metals was significantly reduced in soil amended with food waste biochar compared to no biochar amendment. Furthermore, the food waste biochar was blended with mineral nutrients to create a biochar based compounded N-P-K fertilizer. Application of the biochar based compound fertilizer exerted a significant positive effect on cabbage growth and nutrient use efficiency relative to a conventional mineral compound fertilizer. For per tonne of dry mass of food waste, copyrolysis costed less than 60 USD but gained a gross profit of more than 30 USD. Therefore, the copyrolysis of food waste with crop residues could be applicable to the safe recycling of food waste into value added products to raise agricultural production.

引用

页数：12

共 82 条

[21] Synthesis and nutrient release patterns of a biochar-based N-P-K slow-release fertilizer [J].