Sugarcane vinasse and microalgal biomass in the production of pectin particles as an alternative soil fertilizer

被引：27

作者：

Bettani, Silvia Raquel ^{[1
]}

Ragazzo, Gabriel de Oliveira ^{[1
]}

Santos, Nathalia Leal ^{[1
]}

Kieckbusch, Theo Guenter ^{[2
]}

Bastos, Reinaldo Gaspar ^{[1
]}

Soares, Marcio Roberto ^{[1
]}

da Silva, Mariana Altenhofen ^{[1
]}

机构：

[1] Univ Fed Sao Carlos, Ctr Agr Sci, Rodovia Anhanguera,Km 174, BR-13600970 Araras, SP, Brazil

[2] Univ Estadual Campinas, Sch Chem Engn, Ave Albert Einstein 500, BR-13083852 Campinas, SP, Brazil

来源：

CARBOHYDRATE POLYMERS | 2019年 / 203卷

关键词：

Pectin; Vinasse; Microalgal biomass; Biofertilizer; ORGANIC-MATTER; FERMENTATION;

D O I：

10.1016/j.carbpol.2018.09.041

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

High methoxyl pectin was used as biopolymeric matrix to produce a novel slow release soil fertilizer added with sugarcane vinasse and lipid extracted microalgal (Desmodesmus subspicatus) biomass residue (LMBR). Vinasse acted as the biopolymer solvent, providing greater stability to pectin gel, and as a source of nitrogen (N), potassium (K), calcium (Ca) and magnesium (Mg). LMBR (0.5%) was considered a complementary source of N and micronutrients, copper (Cu), iron (Fe) and zinc (Zn). Compared to blank pectin particles, the particles with vinasse and LMBR showed homogeneous polymer matrix, spherical shapes, higher soluble matter release and enhanced mechanical properties. Scanning electron microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR) analysis indicated the incorporation of microalgal biomass and nutrients from vinasse. Higher rates of biodegradation as well as larger degree of mineralization were found over a period of 36 days for vinasse and LMBR particles. These particles exhibit good perspectives as an alternative fertilizer for agriculture applications and represent an innovative solution for vinasse and LMBR final disposal.

引用

页码：322 / 330

页数：9

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